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Ultrafast Laser for Glass Processing

The special performance of the glass makes the glass processing is facing greater challenges, ultra-fast burning laser applications will bring what breakthrough?

Glass is a transparent solid material that has the unique properties that other materials do not possess: it has excellent optical properties, can reflect, bend, transmit and absorb light, even beyond the entire visual range, High transparency; from the chemical properties, the glass is a corrosion-resistant inert material, can be used as a container for many chemicals. From the thermodynamic and power aspects, the glass is a great insulator. From the physical performance point of view, the glass surface hard, scratch-resistant wear, in recent years through a variety of methods, glass and even have the flexibility. However, it is these properties that make glass processing more challenging, for example, once the glass has excellent tensile strength, it becomes fragile.

Usually a small crack will cause the glass to break. Once the microcracks are formed in a part of the glass, it will spread to the edge of the glass, causing rupture. This fragile property of the glass makes it difficult to process. On the other hand, the evolving technology allows it to be made into smaller, and different shapes of glass for use in different areas. Traditional precision methods such as lithography and electron beam lithography to process glass, but these techniques are too expensive to operate, especially for large areas. Today, high power laser pointer technology provides the most accurate way to process glass. The most straightforward way is to use a single photon absorption in the wavelength range, the glass in the infrared or ultraviolet light will not be highly transparent.

However, direct absorption can cause problems, including poor thermal effects and the formation of heat affected zones, which can produce microcracks that seriously compromise the mechanical stability of the glass. In addition, the bottom of the glass surface processing, manufacturing three-dimensional structure, the need to use high transparency wavelength. Although nanosecond pulsed lasers can be used to create subsurface structures in glass, the physical mechanism of the glass will limit the fineness of the microprocessions and produce microcracks.

In recent years, an exciting alternative process has been put into industrial applications, that is, ultra-fast green laser light in the near infrared wavelength range generated sub-second pulse. In this method, the ultrashort pulse is closely focused on most of the glass or surface, and the power density per square centimeter exceeds the number of tiles, causing complex and diverse processes such as simultaneous multiphoton absorption, avalanche and collision ionization, resulting in a glass The matrix is highly localized by the destruction while almost no energy deposition (only a few microfocus or less). Since the energy used for each pulse is extremely modest, the thermal effect on the part (or even the volume of the focus) is negligible. This method is often referred to as "cold ablation" and can be used to make extremely accurate 3D structures. Compared with other micro-manufacturing technology, femtosecond laser micro-manufacturing transparent material has a unique advantage.

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The Next Decade Laser Lighting Will Replace LED Lighting

Laser lighting is a laser as a light source, but not directly to the laser "on the road", so I am afraid that titanium eyes are really going to be blind. Laser lighting visible light laser lighting and infrared laser lighting.

Visible light laser lighting, according to the principle is divided into the following two: blue light to stimulate the realization of white fluorescent lighting; red, green and blue burning laser pen synthesis of white laser, or true color light. Infrared laser lighting, and more used in night vision, night camera monitoring lighting.

Laser lighting of the two areas of application First, the application of automotive lighting in the automotive industry, the second is as a safety lighting, applied in the riding warning. The development of car lights so far, from the initial just to the current standards of judging more and more, brightness, energy consumption, coping with complex environments and even aesthetic design are as "the eyes of the car" indispensable important indicators The Car lights according to the use of time are: kerosene lamp, acetylene lamp, incandescent lamp, xenon lamp, LED lights, laser headlights.

Whether a lighting technology can be widely used and its own technology research and development progress, the cost level. High-end cars already equipped with LED headlamps, and to start the application of green laser light headlamps, there are some low-end car is still the main halogen bulb, halogen light yellow light in the rain and fog weather penetration. Xenon lamp using the arc discharge to light, compared to halogen yellow light, white people shines, but "high light dog" more use of this lamp, so the security risks are relatively large.

Different lighting technologies have different advantages, and LED lights and laser lights are different from their previous "light" lights series, which can cope with more traffic conditions. Nakamura Shuji believes that, compared to LED, laser lighting has smaller luminous area, higher luminous efficiency, more sensitive focus on the senses and further distance. The laser light of lower energy consumption, the theory of luminous efficiency is 60% higher than the LED lights, such as new green astronomy laser lights equipped with the BMW 7 series, a single lamp group using only the three laser diodes (small volume light system design also provides more possibilities). It also has faster response speed, narrower lighting beam, super penetrating power and lighting distance.

From the irradiation distance, xenon headlamps can reach 150 m, LED headlights up to 300 m, and because of the super laser collection, laser headlamps can reach 600 m. Only when the speed is more than 70 km/h and the ambient light is allowed, the laser light will be automatically lit to avoid the adverse effects of the high beam. Laser lighting system and laser unit as a high beam lamp, which has four most powerful laser diodes, can emit 5500 K color temperature of the strong white light. The speed is up to 60 km/h, and the laser light will automatically turn on, thus greatly enhancing the visual field. Laser light has its limitations, because of the use of the process will produce great heat, how to improve the durability of the radiating lamp lighting system, a single set of lower cost, so as to realize the laser light production, will be the direction of future research.

Laser lighting technology will become a new generation of lighting technology, and its entrance is in the automotive lighting applications. At present, the main task is still technological research and development and results transformation. When the technology is mature and the cost is reduced, laser lighting will be applied in more fields.

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What is the maximum power needed for laser pointing?

50 milliwatts is probably the maximum needed power for almost any laser pointing use.

For seeing the laser "dot" on a wall or surface indoors or in dim light, 5mw laser pointer of green is fine. The most demanding general-use pointing application is for pointing out objects in bright sunlight such as a daytime city architecture tour, and for pointing out stars at night when it is necessary to see the beam in mid-air. For these uses, 5-25 mW should be fine, with a maximum of 50 mW for tough situations (high ambient light brightness, showing stars to a large group).

The Norwegian Radiation Protection Authority states that 20 mW is the limit: “It is not known that laser pointers that are stronger than approx. 20 milliwatts can be used for anything useful. The effect of laser pointers used to point out constellations and like at night, should not exceed a maximum of 20 milliwatts. The reason is that the beam can destroy the night vision of the spectators so that they can no longer perceive weak starlight.”

A study, “Green Laser Pointers for Visual Astronomy: How Much Power Is Enough?”, had 23 observers adjust the power of a 532 nm green laser beam “propagating skyward through the atmosphere in a heavily light-polluted urban setting.” The lowest power where the beam could clearly be seen was between 1.4 and 5.6 milliwatts. The average of all powers chosen was 2.4 milliwatts. The authors concluded that “Green laser pointers with output powers below 5 mW (laser classes American National Standards Institute 3a or International Electrotechnical Commission 3R) appear to be sufficient for use in educational nighttime outdoors activities, providing enough bright beams at reasonable safety levels.”

If you like to pop balloons, ignite matches, or put the laser through textured glass for a private light show in your home, you may want a more powerful laser.

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New Laser Metal Material Manufacturing Technology

According to researchers at the University of Sheffield, they have developed a new 3D printing / weighting process, through the use of energy-saving diode laser arrays, without galvanometers, to achieve faster and more economical part processing results, Sheffield University believes they will change Parts of the production mode.

We are familiar with the laser melting powder material processing methods are increasingly being used in aerospace and automotive high value-added areas, the powder material through the burning laser melting method of manufacturing metal and plastic parts. In order to melt the powder, there must be sufficient laser energy to be transferred to the material to melt the powder in the central area, thus creating a completely dense part, but at the same time the heat conduction exceeds the laser spot perimeter, affecting the surrounding powder. So the smallest manufacturing size is generally larger than the laser spot, the amount of sintering beyond the laser point depends on the thermal conductivity of the powder and the energy of the laser.

The diffused laser energy and the laser scanning speed of the bath are carefully adjusted and controlled so as to achieve consistent metal alloy properties and layer thickness. According to the 3D Science Valley, focusing on the high power laser beam is the key to the performance of the alloy during the melting process. To achieve a consistent process depends on controlling the laser spot size, it is necessary to make the laser energy density consistent with the energy transferred to the adjacent powder The In the current powder bed laser melting process, a clear focus beam is obtained by means of a galvanometer because any focus of focus does not result in energy transfer to materials other than the melting zone that result in insufficient powder melting and may result in a finished product size error And the surface finish is poor. If the size of the focused spot increases significantly, it may cause the finished part to contain a large amount of incomplete melted powder and difficult to control material properties.

So a long time to occupy the consensus of the industry brain is galvanometer is to achieve a key part of precision machining. Unlike the general processing technology on the market, Sheffield University has tried to abandon galvanometers. They refer to this process as Diode Area Melting, which can be turned on or off by using a single 200mw laser pointer diode array in parallel, according to the University of Sheffield, which is faster and more energy efficient. "Our research challenges the industry's long-standing belief that low-power diodes are unable to achieve sufficient powder material melting due to low power and poor beam quality.Diode Area Melting's key process," said Dr. Kristian Groom, Ph.D., from the Department of Electrical and Electrical Engineering. Is to move the short wavelength laser array (808nm), increase the absorption collimation effect, and focus the beam in a few milliseconds to reach the melting point of 1400 ℃, resulting in dense parts, this method can be used for 17-4 stainless steel parts processing.

Dr. Groom and Dr. Kamran Mumtaz of the Department of Mechanical Engineering plan to extend this technology to the field of processing of plastic products. The team believes that the equipment may expand into a multi-material processing system in the future. The study was supported by the Engineering and Physical Sciences Research Council (EPSRC). What is the commercial value of the study at Sheffield University? But also need to follow up the observation, to abandon the galvanometer of this attempt, it is understood that after the German Fraunhofer Institute released only 30,000 euros for small and medium enterprises entry-level SLM 3D printer is no galvanometer.

Fraunhofer's equipment is equipped with a 140 W laser diode with a focus diameter of 250 microns and a Cartesian coordinate system. The device can produce 90mm high metal parts, the maximum diameter of 80mm. Equipment appearance is very compact, only the space 1.3 × 0.8 × 1.4 meters. By adjusting the print speed and quality, the institute also tried to print a medium-sized stainless steel assembly with a density of more than 99.5% and can be printed in 12 hours. However, Fraunhofer's device does not seem to involve 30mw laser pointer diode arrays. In addition, short wavelength lasers typically include light emitting wavelengths from 390nm to 950nm, and long wavelength lasers cover lasers with luminescence wavelengths from 980nm to 1550nm, while Sheffield University Short wavelength laser array (808nm) to process metal powder, can be said to be a brain hole open attempt.

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April Lasers Clearance, Big Discount Up to 99%

In order to feedback new and old customers, we had carried out a big discount activities, about high power handheld laser pointer, burning laser pointer, yellow laser, minigun Gatling laser and so on. The last stock, first come first served. If you want to get high-quality and cheap laser pen, please visit Everyonetobuy.com, or you can also click the link here to choose your gift!

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MARS III  is a super strong frequency conversion blue laser pointer up to 50000mw, which is enough powerful to do something what you want. If you want to buy it, please click the link http://www.everyonetobuy.com/ultra-powerful-50000mw-blue-laser-pointer-flashlight.html

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Five Advantages of Laser Cutting Machine

The working principle of the laser cutting machine is to use the focused high power density brightest laser pointer beam to irradiate the workpiece, so that the irradiated material is rapidly melted, vaporized, ablated or ignited, and the molten material is blown by means of a high-speed air coaxial with the beam To achieve the workpiece cut. Laser cutting is one of the thermal cutting methods. Laser cutting and other thermal cutting method compared to the specific advantages can be summarized as the following aspects:

Cutting quality is good: the laser light spot is small, the energy density is high, the cutting speed is fast, so the laser cutting can get the better cutting quality. Laser cutting incision is narrow, both sides of the slit parallel and perpendicular to the surface, cutting parts of the dimensional accuracy of up to ± 0.05mm; cutting surface smooth and beautiful, the surface roughness of only a few tens of microns, and even laser cutting can be used as a final process, Processing, parts can be used directly; material after laser cutting, the heat affected zone width is very small, near the performance of the material is almost no impact, and the workpiece deformation is small, high precision cutting, The cross section of the cross section shows a more regular rectangle.

Cutting efficiency: due to the transmission characteristics of the laser, most powerful laser pointer cutting machine is generally equipped with multiple CNC table, the entire cutting process can achieve all the NC. Operation, just change the NC program, you can apply different shapes of cutting parts, both two-dimensional cutting, but also to achieve three-dimensional cutting. Cutting speed: with a power of 1200W laser cutting 2mm thick low carbon steel plate, cutting speed up to 15000px / min; cutting 5mm thick polypropylene resin board, cutting speed up to 30000px / min. Material in the laser cutting does not need to clamp fixed, can save fixture, but also save the upper and lower auxiliary time.

Non-contact cutting: laser cutting torch and workpiece without contact, there is no tool wear. Processing different parts of the shape, do not need to replace the "tool", just change the laser output parameters. Laser cutting process low noise, small vibration, no pollution. More types of cutting materials: Compared with oxyacetylene cutting and plasma cutting, burning laser cutting materials, including metal, non-metallic, metal and non-metallic matrix composites, leather, wood and fiber. However, for different materials, due to their own thermal physical properties and the absorption rate of different laser, showing a different laser cutting adaptability.

CNC cutting is a large number of pipe, high efficiency, high-quality cutting production methods, CNC cutting is the core of CNC cutting system. At present, the quality problems in the cutting process of laser pipe are as follows: the part of the cutting point is burned, the corner of the part is burned, the cutting surface is tilted, and the circular part is cut or can not be closed, which leads directly to the serious waste and cutting production of the pipe low efficiency. CNC cutting technology refers to the CNC system of cutting control software to provide advanced cutting technology and a wealth of cutting experience, so that cutting operations through skilled use of the control system to achieve high-quality, high-efficiency CNC cutting.

CNC laser tube cutting due to high cutting efficiency, programming nesting more complex, if used improperly, it will cause waste of pipe and cutting efficiency is low. Through the professional tube cutting nesting software on the computer in advance to draw, nesting, cutting sub-programming, generate NC cutting procedures, and then large-length metal pipe full automatic 5000mw green laser cutting cutting. Professional pipe material nesting software is to achieve CNC tube cutting machine large quantities, high efficiency, high-quality cutting production of the basis and prerequisites. Laser cutting technology is in the process of rapid development and continuous improvement, with the computer technology, mechanical structure, cutting technology and optimization algorithms continue to update and develop, CNC laser cutting technology will be more prominent to show its intelligent, fast and optimized Cutting technology and skills for the laser tube cutting machine efficient cutting, high-quality cutting, as well as saving pipe and energy consumption, to provide technical assurance.

In the context of the market situation, the laser processing market has grown steadily, and in the context of weak macroeconomic and industrial demand, 3000mw laser pointer processing equipment, with its business needs in the high-end processing market, has maintained a steady growth in the size of the industry. , Laser processing than the traditional machine tool cutting and other hot processing, with multiple technical advantages, and high-end processing market requirements of high precision, low wear and high efficiency requirements are consistent.

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Panasonic Acquired Diode Laser Manufacturer TeraDiode 100% Shares

It is reported that the day before Panasonic announced the acquisition of industrial high brightness diode laser direct global supplier of all the shares of TeraDiode.

The 100mw laser pointer processing technology of high precision and high quality has become more and more important, to meet the demand of lightweight and high stiffness, and high design flexibility in the automotive and other industries and high productivity demand. TeraDiode's high brightness direct diode laser with proprietary wavelength beam combining technology is expected to become the next generation of lasers that can achieve the broad industrial market demand.

The two sides in 2013 began a strategic alliance to quickly meet this market demand, and successfully launched the world's first direct diode laser welding robot system. The same year, Matsushita from TeraDiode for direct diode laser welding of the exclusive rights in the major countries in Asia, the two companies have been in product development, manufacturing, sales and service aspects of close cooperation, expanding the use of global direct diode laser technology.

According to the agreement, TeraDiode will become a wholly-owned subsidiary of Matsushita, Matsushita through TeraDiode front directly diode laser technology and proprietary technology and their combination of technology, to further promote the development of the 200mw laser pointer processing business of the two companies.

The two companies will further develop direct diode technology, strengthen the laser processing business as a new core business in the field of Panasonic solutions in order to accelerate the growth of performance.

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HTPOW SKU-HQ070047 is a very comprehensive laser pointer, high power, long distance, awesome shape, visible light, adjustable focus and 5in1 with five star caps. Even it can achieve everything what you want about lasers, powerful enough to easily burn paper, bag, match and so on. Especially when you join outdoor activities, burning laser pointer is your best survival tool, to make a fire, drive away the beast, clear the danger somewhere you couldn't go, and send a distress signal when you are in danger. So, you can't imagine how strong powerful function of this blue laser pointer. Although which is a little expensive, we sure that the high power laser pointer is still the most popular laser pointer in our shop, everyone all have faith in the price is worth of it. By the way, we tell you a secret, owing to this lazer pointer is adequate inventory and best selling in our shop, so we generally shipped quickly. Once you have ordered success, you may soon be able to see your gift. Christmas Spree!  Yesterday the price was still $ 369.99 , but from now until Christmas, we just sale $ 199.99 . Once Christmas is over , there is no chance to get it with this low price ! So, Just Do it right now, Do not miss this opportunity !

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China Hubei Proposed Maximum Laser Industrial Base

The afternoon of December 9th, Jingshan county government and the Wuhan Chutian Laser (Group) Corporation signed a project cooperation framework contract in Wuhan, in the Jingshan Economic Development Zone to build China (Jingshan) high power laser pointer industrial base. Chutian Laser Group Chairman Sun Wen, Jingshan county Party Secretary Zhou Zhihong attended the signing ceremony. The government of Jingshan county Party committee, county deputy party secretary Guo Zhixiang, CEO Han Shuangyue Chutian Laser group representing the county government, Chutian Laser group company to sign the contract.

According to the contract, China (Jingshan) laser industrial base project covers an area of 5000 acres, carrying laser Chutian Laser group cutting, laser welding, laser marking, laser surface treatment and laser laser drilling and other industrial projects, the formation of laser application and laser processing system, laser and laser accessories applications such as industrial laser industry chain development the application in the industrial, medical, commercial, scientific research, information and military fields such as laser crystal, key components and fittings, laser products and laser system, public service platform, to build the country's largest industrial base of the green laser pointer. At the same time, landmark buildings, main street, important attractions and public leisure places in Jingshan City, the construction of cultural and creative projects by means of laser, laser technology, intelligent manufacturing and construction of Jingshan Jingshan City Planning Exhibition hall.

The whole project is divided into three stages, and the construction period is 5 years. Among them, the first phase of the project site in Jingshan Intelligent Manufacturing Industrial Park, the construction period is 6 months, the main building industrial laser project. The two period and the three period are 24 months and 30 months respectively.

Welcome to the sun. He said, Chutian Laser signed project cooperation framework contract with the Jingshan county government, is a major event in the history of the company, the wedding. Morning, Jingshan county government and the East Lake high tech Zone signed a strategic cooperation framework agreement, intends to cooperate in undertaking industrial transfer, tennis activities docking, personnel and technology exchanges and cooperation and other fields, in such a favorable background, Chutian Laser selection in Jingshan, is to follow the development of the situation, in response to the two governments strategic cooperation, implementation a reflection of industrial expansion. The company will set up a working team, as soon as possible to promote the project landing.

Zhou Zhihong said, the two sides signed the contract, indicating that Jingshan County People's government and the Chutian Laser Group all-round cooperation started. "13th Five-Year" period, Jingshan County, Hubei county economic development should be the vanguard, striving for National Ecological Civilization Construction Demonstration County, built national comprehensive mechanization Demonstration County, built in Central China intelligent industrial city, to achieve the "two competition" and "two" target. Chutian Laser settled in Jingshan, both the East Lake high tech Zone also has support, Chutian Laser leadership to the county Party committee and government support to build confidence in the scale of billions of Chutian Laser industry, sprint billion industry in Jingshan to build the largest China laser pointer industry base, the realization of "13th Five-Year" at the end of the Jingshan economic growth doubled. Departments Gongzuozhuanban, functions will provide the full range of services to promote the smooth implementation of the project, Chutian laser.

At the meeting, the executive chairman Cheng Aifen Hubei chushang Association will support the Jingshan County Association for international cooperation of enterprises in Hubei Province in the upcoming annual meeting, to promote investment projects, the introduction of a number of international and domestic enterprises, build the arrangements for matters related to international intelligent industrial park. Chu business group board of directors chairman Li Shufeng on the "policy + fund" mode of operation, the introduction of a number of good companies settled in Jingshan, the idea is introduced. Report Jingshan text brigade industry project responsible person in charge of Chutian Laser into the burning laser pointer industry are introduced. County Bureau of industry and information, the new County Housing Construction Bureau, bureau, county style Jingcheng investment group, the county people's Hospital and other responsible persons have the position to speak it, Chutian Laser project located in Jingshan, work cohesion, both sides of communication services.

According to reports, Chutian Laser Group Co. Ltd. is located in East Lake high tech Zone, founded 30 years, has developed into a large scale, product variety, sound marketing network of professional laser product manufacturers, industrial laser, laser medical, cultural and creative industries under three 3w green laser group, in Beijing, Wuhan, Suzhou, Shanghai and Wenzhou has a production base. The company is "Wuhan China Optics Valley" the core enterprise and the Wuhan star enterprise, is the national Torch Plan key high and new technology enterprise".

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Application of Stainless Steel Laser Cutting Machine in Decoration Engineering

Stainless steel corrosion resistance due to strong, high mechanical properties, the surface does not fade over time, the color with the angle of light will have different color changes and other characteristics, are widely used in decorative engineering industry. For example, in a variety of top clubs, public places such as public recreation decoration decoration, used as curtain wall, hall wall, elevator decoration, signs advertising, front screens and other decorative materials applications.

However, if you want to stainless steel plate made of stainless steel products is a very complex technology, the production process requires a lot of processes, such as the need to cut, fold, bend, welding and other mechanical processing. Among them, the cutting process is a more important process, stainless steel high power laser pointer cutting There are many traditional processing methods, but the efficiency is low, forming poor quality and rarely meet the needs of mass production.

At present, the stainless steel burning laser pointer cutting machine is widely used in the metal processing industry because of its good beam quality, high precision, small slit, smooth cutting, flexible cutting of arbitrary graphics and so on. Look at the application of stainless steel laser cutting machine in decoration industry.

Laser cutting system is constantly improve the high-tech, information technology, relative to the traditional mechanical manufacturing technology revolution, stainless steel decorative engineering industry has a huge role in promoting. With the increasingly fierce market competition, the technology will play an increasingly important role, and bring huge economic benefits.

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GE will acquire 75% of the shares of German Concept Laser

GE and German concept laser company reached a 75% stake in the agreement, the agreement allows GE to complete the acquisition within a few years the company. GE Vice President and GE Aviation President, said: GE commitment to enhance the concept of laser pointer technology and output. Concept Laser CEO, said: GE saw by the material manufacturing industry leadership in the digital transformation of the potential, we are pleased to work together to accelerate the development of the technology for the benefit of users. The company has some exciting new products to market, with GE's support we will be in the center of industrial 4.0.

Concept laser company was founded in 2000, 2001 commercialized the first metal by material manufacturing machine tools. 16 years, the company will be its patented LaserCUSING industrialization and maintain the industry-leading. The concept of high power laser pointer company has more than 200 employees, is the metal by material manufacturing pioneer in the field. Concept Laser designs and manufactures machine tools based on powder-bed-based laser materials. Its customers include the aerospace and medical industries, as well as automotive and jewelry. The company's machine tools cover the largest and smallest size range on the market today and are able to process a wide range of powder materials including titanium and nickel-based, cobalt-chromium and precious metal alloys, as well as hot and high grade steels and aluminum. Concept Laser's multi-laser machine is one of the fastest and highest quality 2000mw laser pointer melting machines in the world. The company continues to invest in customer-centric technology, including real-time process monitoring through its QMmeltpool system. The company will also announce the launch of the new machine concept using full modular technology for sale.

To support the future growth of the business, GE is committed to investing in Concept Laser to become GE's new German center. The acquisition provides GE with access to a wide range of industries for the manufacture of materials. GE is a leading end-user and innovator in the material manufacturing industry. GE has invested approximately US $ 1.5 billion in manufacturing and material technology through the GE Global Research Center to develop incremental applications in six of its business units. GE Aviation this year through the LEAP engine to the civil aviation aircraft introduced the first engine component wood fuel nozzle, in 2020 will be an annual output of 40,000. GE Aviation also uses components to produce the most advanced military engines. In the navigational market, GE is developing advanced turboprop engines for Cessna, a large part of which is manufactured using incremental materials.

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Well,We just only tell you the HTPOW 1000mW Mini USB Engraver is an amazing laser cutting machine, the product is a laser cutter for home use, a tool machine. If you are a DIY enthusiast, you will fall in love with this magical machine to carve any pattern style what you want, and it can carve wood,paper,leather,rubber,plastic and bamboo, but do not cut metal,glass,ceramics,stone. Maybe sometimes you could make a souvenir for your families,your frieds,your love or a special anniversary. I am sure that they will feel very moved for this surprised gift, we think it is a meaningful emotional communication in your life. So, if you want to become a DIY Master or do something interesting, I promise you this laser engraving machine will bring unimaginable fun with you. Once you have had a laser cutter and then click here to know how to use it. Do not hesitate any more and take one to go home right now !

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Hisense 4K Laser TV All-round Evaluation

TV screen experienced from CRT to plasma and then to the LCD era after the change, the recent long period of time seems to be some stagnation, subject to the LCD itself, the principle of light restrictions, size, power consumption, technology and other aspects are close to The IFA exhibition held in early September seems to give us the answer, many TV manufacturers to market blue laser pointer TV, which Hisense is released the world's first DLP ultra-short focal length 4K Laser theater TV, caused a sensation in the industry is not small. The other domestic brands such as Changhong, TCL is also synchronized to force the laser TV, laser television market in 2016 can be lively exception.

Hisense as a leading domestic appliance enterprises, this year began to force the high-end large-screen market, especially in this year, with ULED's strong performance, Hisense 55-inch and above the high-end TV market share has exceeded Samsung to become the big screen high-end new king ; According to the data in July, Hisense laser TV has occupied more than 85-inch large screen 49.64% market share, it can be said is the undisputed industry NO.1! Hisense laser TV has been developed to the third generation, New addition to the appearance and performance to further strengthen, the resolution is raised to the 4K level, bringing the ultimate viewing experience. In addition, the latest 4K laser TV What are the different? Today, this new product came to our evaluation room, the following to send you a detailed evaluation.

I believe most people still do not understand the concept of laser television, so here I first briefly, laser TV simply and the principle of the projector is similar to this technology to first image signal after digital processing, and then again Projecting light through a series of complex lenses. It is based on TI (United States Texas Instruments) developed digital micromirror device - DMD (Digital Micromirror Device) to complete the visual digital information display technology. Specifically, the DLP projection technology uses a digital micromirror (DMD) chip as a key processing element to achieve digital optical processing. So in the light-emitting principle, the 20000mw laser pointer TV and traditional TV there is essentially the difference between the traditional LCD TV is illuminated by the backlight, and liquid crystal molecules to achieve image deflection display, and laser TV is the light projected onto the media (such as walls, Curtains, etc.), through the reflection of light to the image transmission to the human eye, and in a very short physical distance of 100-inch large screen projection.

Now that we know the principle of work, we can generally outline it compared to traditional TV some of the advantages of the first laser light source life is much longer, the brightness dropped to 80% of the previous almost 50,000 hours; followed by brightness High color gamut, Hisense 4K laser TV official nominal brightness up to 3000 lumens, color gamut coverage of 116% of the NTSC, compared to OLED and quantum dot TV is even better. Many people will say that the current price of LCD TVs have been so low, why Hisense also adhere to push the laser TV? In fact, most people's needs are only 60 inches in the following specifications, this is not the laser TV to target the market. More than 80-inch large-screen TV, the price has been high, and the success of laser TV on the picture quality comparable to LCD TVs, more importantly, the price is only the same size LCD TV 1/3, for the big screen display with To a new cost-effective solution.

At the same time Hisense 4K laser TV also broke through its three major technical difficulties: First, the use of high processing power optical engine, its processing power than 2K laser TV products increased by 300%, so that 8.3 million beam of fine control, to achieve 830 4K laser TV need high-resolution lens design, Hisense 4K lens to achieve the optical resolution of 186 per millimeter beam; third, 4K laser TV manufacturing to achieve micron-level material control accuracy and the lens Installation precision, Hisense 4K 10000mw laser pointer theater TV using a high-precision manufacturing process, machining reached a limit of close to 10 micron accuracy, the lens mounted precision of 5 microns, the error is less than a hair diameter of 1 / These together have contributed to the Hisense laser TV is different from other products of the unique advantages.

Hisense 4K laser TV, including the screen, host, stereo three parts, which is part of the screen is 100 inches large imported Fresnel passive bionic screen, rare earth technology integration of rare metals, such a large screen also has a very narrow border , Really brings the immense shock of the presence and immersion. Of course, the biggest feature of this bionic screen is its soft viewing effect, it overcame the problem of traditional TV stroboscopic, natural and comfortable, but also shield the ambient light, and projection is different in the bright light can also watch, And the color performance better. Hisense 4K laser TV is equipped with two remote control, one is to operate the video playback smart remote control, the other is to control the audio remote control, they do not interfere with each other, holding is quite comfortable. Intelligent remote control and Hisense TV's consistent, mellow, full of pebble shape, fine skin touch, can let you put it down. It also comes with a fast-switching button, but also can be customized in the system a key direct function, speed, minimalist control experience to meet all family members entertainment needs.

Due to the different light principle, we can not use the test of ordinary television test equipment for testing. So we specifically use the projector test standards for testing this product, the test link, including objective data and subjective perception of two parts, including the objective test part of the maximum brightness of the product we tested, that is, the projector in the brightest mode Brightness, contrast, light bulb mode are adjusted to the highest) of the average brightness of the screen. From our actual test results, Hisense 4K laser TV's maximum brightness reached 6400 lumens, has greatly exceeded the nominal value. In order to better display the quality of the product, we will put it together with a common LCD TV to do a comparison, you can see Hisense 4K 3000mw laser pointer TV color reproduction better treatment, the color is more true nature, and LCD TV clear image The treatment is too rich and gaudy, the color has been distorted. At the same time because of the 4K resolution, so before being criticized for more details of the part also did not strive.

For the laser TV, there is no light leakage occurs, light control is its inherent advantages. In the display of all black, the host is not projected light. Of course, contrast performance is significantly better than ordinary LCD TV, Hisense 4K laser TV also supports HDR technology, we see the following chart in the HDR format video playback, bright and dark contrast is very obvious, Guan Ying artifact title can be well deserved . Dynamic picture clarity is also one of the advantages of laser television, the following test film real shot you can see, the edge of the house is very clear, through the window, you can clearly see the branches of the peripheral branches and the passengers inside, and there is no Smear or virtual phenomenon, significantly better than the ordinary LCD TV. Test process, the power of the 100mw laser pointer TV is maintained at 400w or so, is significantly lower than the same specifications of the LCD TV, the performance of energy-saving fairly well. We can see the true color of nature, has been comparable to Japan and South Korea high-end LCD.

Beautiful, simple, easy to use has been a sign of Hisense VIDAA system, Hisense 4K laser TV also equipped with Android5.1 based on the development of VIDAA intelligent system to poster-like picture-based, plate classification is rich, clear hierarchy, operational logic Simple and clear, and there is no repetitive content of the complex, the number of films and television equipped with ultra-genuine Chinese video content. More poly good use, together fun, together to enjoy home, poly good school, poly-purchase and other precise positioning of the plate. Hisense VIDAA Internet TV and China, Fantastic Art, Tencent video industry-leading video platform to reach a strategic cooperation, with 15,000 film resources, 150000 sets of TV drama resources, TV drama average daily update volume of 10 or more. It can be said, VIDAA film and television resources and update the number of resources has been far more than the industry's flagship content of the Internet TV brand.

Just click on the remote control to see the movie icon to enter the player interface, which is not only a story, there are related recommendations, people, tags and other useful features, easy to use. According to the source quality, divided into SD, HD, ultra-clear, blue, 4K categories, the user can choose according to their own network and display device corresponding source. It should be noted that the current part of the latest video is paid to watch, 49 yuan per month, you can watch all the paid content. But even if the user does not buy members, still ensure that 92% of free HD content to watch, and 1080P HD video resources accounted for more than 90%.

Through the test can see Hisense 4K 50mw laser pointer TV in all respects is the top, first of all simple and elegant design, installation and transportation are more convenient, while compared to traditional LCD TV more space-saving; in terms of quality, has been significantly better than ordinary Of the LCD TV, while many LCD TV can not match the advantages, such as just less than 0.5 meters away from the wall space can be projected more than 100-inch display screen, shocking sound unity, with a theater-rated Viewing experience. And in the content, equipped with Hisense VIDAA system is simple and easy to use, with the content and film and television drama resources have gone beyond most other brands, 4K high-quality large want to see.

Hisense as the first layout of the laser TV and mass production listing of the brand, after several generations of iterative upgrades, it can be said that fully equipped with high-end large-screen LCD TV Competition strength, color, viewing experience, life, power consumption , Transport convenience and so has a great advantage, in a sense has been significantly better than the same specifications of the LCD TV, plus less than 1/3 of the price is definitely the first choice for high-end user components home theater . Finally, I would like to say in the current field of high-end LCD core technology is still monopolized by Japanese and Korean companies today, and Hisense 4K 30mw laser pointer TV most of the core technology is their own research and development, all grasp the industrial chain, which even more commendable, this powerful competition Power also allows consumers to enjoy the inexpensive TV products, as the ultimate beneficiaries.

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Principle of Laser Charging

Speaking of mobile phone wireless charging, everyone's first reaction is likely to do not believe the attitude. Indeed, wireless charging current, just stay in the use of specific wireless charging plate, although mobile phone manufacturers have adopted the fast charging technology in a new generation of wireless charging plate, speed than before to improve a lot, but think of your mobile phone plugged into the charger, or on the wireless charging plate, the difference is not large, so the wireless charging at the present stage, the use of the scene is not particularly attractive. But just a few days ago, a Russian called "energy" rocket Aerospace Corp made a special experiment, they use blue laser pointer for 1.5 kilometers to the mobile phone charging 1 hours, which makes the impression of the mobile phone charging added more imagination. The experiment was completed in two buildings that are 1.5 kilometers apart. In one of the roof mounted laser transmitter, a roof mounted on the plate, and the plate with the conventional mobile phone charging port, charging for mobile phone. Because the laser energy is concentrated and is very strong, so the use of the receiver plate, can be transformed into the laser power transmission to the mobile phone. In this process, although the plate length is only 10cm, but still accurately received laser, accuracy is amazing.

In fact, Microsoft Asia Research Institute in 2015 had done on the use of light charging prototype, then known as AutoCharge. The difference is that when the sun is used to gather burning laser pointer light beams, and then a special charger can lock your phone on the table, and converted into electricity for mobile phone charging. Because the beam is more concentrated, so the whole charging effect, theoretically to achieve the speed of socket charging. Some people would say, this is not and now the wireless charging similar to it, or to put in a specific place. In fact, the core idea of AutoCharge is to allow users to readily put smart phones on the table, through the identification of the charger to determine the location of the device to charge, this process does not require the user to deliberately placed. When charging is complete, charger can be identified by the sensor mobile phone battery has been full and automatically turn off the charging switch beam, this means that you can keep the mobile phone placed at random, charging at the same time, it will automatically charge well closed, fully automated charging operation. However, in order to achieve it, Microsoft researchers said, this technology requires more mature solar technology, but also be restricted in the indoor space. So this prototype experiment is still far away from the actual product, need to be further improved in many ways.

First of all, is to charge the uav. As we all know, short life time has been one of the main shortcomings of the uav. Increase the battery will allow the UAV to increase the weight and weight increase will undoubtedly lead to increases the burden on the UAV, flight time is not effectively enhanced, so in the present, no major breakthrough in the battery industry, so that the UAV flight time increase will become a vicious spiral. And in order to improve their life, scientists have no less effort. Some time ago the Imperial College London in London in the laboratory successfully created a wireless charging device, the charging base through a double circuit board (above etched with a radio transmitter) is also equipped with 13.56MHz inverter, can continue power supply for the circuit board. Let an unmanned aerial vehicle (four axis) in the case of no battery can fly to the height of 12.7cm, it can be said that we have a lot of imagination. But the wireless charging base by power supply mode, the problem is very low, the first is the charging efficiency of the base, it needs very strong power conversion to make UAV Flight High enough. Since the "wireless charging" is not a way, the 100mw laser pointer charge may become another new way to try. Through laser charging, first solve the distance problem is, as previously described, in fact we have been able to 1-2 km distance charging for mobile phone, it means that this process does not need to build large charging base.

And, we are actually using the laser to provide electric energy into this matter has precedent, LazerMotive company as early as 2010 by laser energy so that the UAV in the air for 12 hours of flight. So, or back to us began to talk about the "energy" rocket Aerospace Corp, as a Aerospace Corp, through the laser to charge the phone is naturally not its original intention. With the "energy" engineer Vitali Capranov, what they want to do is, in fact, "allow professionals to remotely charge a small UAV.". According to the plan, 1 years later, they can be used in the large UAV 30mw laser pointer charge. Small unmanned aircraft is said to be two or three months after the experiment will be very, very people look forward to.

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Using Laser Technology to Decrypt the Cause of Micro Electronic Heating

In the 1970s, a man named Gordon Moore predicted his performance in the semiconductor industry by doubling the chip's performance every 18 months. This prediction over the past 40 years all the way to prove his right, and the transistor density of the chip also followed by doubling, doubling, and then double. For people who are familiar with the chip, high-performance is usually associated with this high fever, with our dependence on electronic products increasing, mobile phones, laser 5000mw,flat panel, notebook computers and other heating problems, not only negative impact on the experience, The manufacturers to design a more beautiful, lightweight new products.

To solve the electronic products, especially micro-electronic devices of the heat, we must first understand the root causes of these heat generated. And the answer may be hidden in the latest paper published by Dr. Liao Linlin. The former Sichuan Province college entrance exam tutor from Professor Chen Gang, this year from the Massachusetts Institute of Technology received a doctorate. His research team accurately measured the interaction between electrons and phonons, the results not only explain the micro-electronic equipment, the causes of fever, but also can be used to further improve the performance of thermoelectric materials.

With the development of semiconductor chips, more and more transistors are stuffed into smaller and smaller spaces. Massachusetts Institute of Technology engineers recently found that mobile phones, laptops and other electronic devices will be hot, the main reason is that electronic and thermal energy to carry the phonon interaction. This interaction was once overlooked by scientists, but the latest research results show that in microelectronic devices, this interaction has a significant impact on heat dissipation, the related research results published in the October 12 of the "Nature Communication ".

In the 1970s, a man named Gordon Moore predicted his performance in the semiconductor industry by doubling the chip's performance every 18 months. This prediction over the past 40 years all the way to prove his right, and the transistor density of the chip also followed by doubling, doubling, and then double. For people who are familiar with the 3000mw laser pointer chip, high-performance is usually associated with this high fever, with our dependence on electronic products increasing, mobile phones, flat panel, notebook computers and other heating problems, not only negative impact on the experience, The manufacturers to design a more beautiful, lightweight new products.

Thermoelectric materials have a very wide range of applications, including thermal detectors and NASA's latest proposed for space exploration equipment, nuclear batteries. The phenomenon of electron scattering by phonons is not new, but has long been neglected by scientists. With the continuous development of semiconductor technology, the concentration of electrons becomes higher and higher, this phenomenon can not be ignored. Scientists must think about how to manipulate the electron-phonon interaction in order to increase the efficiency of the thermoelectric device on the one hand and prevent the microelectronic device from heating up on the other.

Phonon and electronic bumper car games

Whether in 20000mw laser transistors (semiconductor materials, such as silicon) or wire (conductor material, such as copper), the electronic current movement is the main medium. The reason why resistors exist is that the electrons flow through a roadblock - a phonon carrying thermal energy collides with electrons, pushing it out of the current path. For a long time, scientists have been investigating the effects of electron-phonon interactions, but the focus has been on electrons rather than on how the interactions affect phonons. "Scientists rarely study the effects of this interaction on phonons, because they think this effect is not important," Liao Lin said, "but Newton's third law tells us that each force has a reaction force, but we do not know what The reaction will become important. "

Scattering, heat is difficult to coexist

According to Liao and colleagues, when the electron concentration exceeds 1019 electrons per cubic centimeter, the interaction of electrons and phonons in silicon, the most commonly used material in semiconducting materials, can produce a large scattering of phonons. When the electron concentration reaches 1021 per cubic centimeter, the heat dissipation capacity of the material will be reduced by phonon scattering by 50%. "This is a very significant effect, but many people are doubtful," Liao Lin Lin said. This is mainly because in previous experiments with high concentrations of electronic materials, scientists have assumed that the cooling capacity of the decline is not due to electron - phonon interaction, but due to material defects caused. These defects are due to the doping of materials, silicon, for example, phosphorus and boron are commonly used doping atoms, the purpose is to increase the material's electron concentration. Therefore, to verify Liao Linlin's theory, it is necessary to separate the electron-phonon interaction and the influence of defects on heat dissipation capacity. The specific method of implementation is to increase the electron concentration in the material, but not to introduce any defects.

The team developed a technique called three-pulse photoacoustic spectroscopy to optically increase the concentration of electrons in silicon crystal thin films and measure phonon production in the material Of any impact. The technique is an extension of the traditional "two-pulse photoacoustic spectroscopy" in which the scientists accurately control the timing of the two blue laser pointer beams. The first beam produces phonon pulses in the material and the second beam measures the scattering or attenuation of the phonon pulses. Liao Linlin introduced a third laser beam, which can accurately increase the electron concentration in the silicon material without introducing any defects. After the third laser beam is emitted, the measurement results show that the phonon pulse decay time is significantly shortened, which indicates that the electron concentration increases the phonon scattering and inhibits its activity.

The experimental results show that the introduction of the third burning laser pointer can shorten the decay time of the phonon pulse. The larger the laser intensity (the higher the electron concentration), the shorter the decay time of the phonon pulse. The result was a great excitement for Liao Lin's team, which was a good match for their previous calculations. "We can now determine the effect is very obvious, and we confirmed it in the experiment," Liao Lin Lin said, "This is the first can directly detect the electron - phonon interaction on the impact of phonons experiment." Interestingly, The concentration of 1019 electrons per cubic centimeter, than some of the existing transistor is even lower, in other words, the latest discovery of this phenomenon is part of the existing microelectronics fever one of the culprits. "According to our research, this effect will become increasingly important as the size of the circuit gets smaller," says Liao. "We must seriously consider this effect and study how to use or avoid its effects."