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Workding principle of UVC lamp Ultraviolet lamps produce 254nm ＆ 185nm Uvrays due to low pressure mercury vapor,as fluorecent lamps and energy saving lamps do. The glass of fluorecent and energy saving lamps is regular,which can’t radiate outside ,but absorablr to phorsphor then change to visual.Ultraviolet lamps use quartz glass or special glass that uv rays.

Principle and Characteristic for germ icidal Function 254nm UV rays is readily absorbable to cell,(seetable 1),destroy genome DNA and kill bacteria ,so called Bactercide lamps. Killbacteria and virus in a very short time. Please see chart 1.Physical disinfection,no second time

Increase light intensity by 5 times? American researchers develop nanowire UV LEDs

Nanowire experts at the National Institute of Standards and Technology (NIST) have developed a UV LED that uses five times the light intensity of a similarly designed LED based on a special type of housing.

UV LEDs are used in a growing number of applications such as polymer curing, water purification and medical disinfection. Micro LEDs are also the focus of visual displays. NIST staff are experimenting with nanowire-based LEDs for scanning probe tips for electronic and biological applications.

This new type of LED with higher light intensity is the result of NIST's expertise in manufacturing high quality GaN nanowires. Recently, researchers have been experimenting with nanowire cores made of silicon-doped GaN with additional electrons surrounded by a shell made of magnesium-doped GaN with additional electronically bonded Hole.

The light generated by the LED is due to the recombination of electrons and holes injected into the shell. The new LEDs add a small amount of aluminum to the shell, which reduces losses due to electron spillage and light reabsorption.

As described in the journal Nanotechnology, this new type of LED is made of nanowires with a p-i-n structure that injects electrons and holes into the nanowires. The added aluminum helps to confine electrons to the core of the nanowire, enhancing electroluminescence by a factor of five.

"The role of aluminum is to introduce current asymmetry that prevents electrons from flowing into the shell. Although this reduces efficiency, it limits electrons and holes to the core of the nanowire," said first author Matt Brubaker.

The nanowire test structure has a length of about 440 nm and a shell thickness of about 40 nm. The final LED, including the case, is almost 10 times larger. The researchers found that the amount of aluminum added to the fabricated structure depends on the nanowire diameter.

Research leader Kris Bertness said that at least two companies are developing nanowire-based Micro LEDs, and NIST has signed a collaborative R&D agreement with one of the companies to develop dopant and structural characterization methods. Researchers have already had a preliminary discussion with Scanning Probes on the use of NIST's LED technology, and NIST plans to show prototype LEDs soon.

#LED #science

The wavelength of ultraviolet light is between visible light and X-ray. Its wavelength range is 10 to 400 nm. However, many optoelectronic manufacturers believe that the wavelength of 430 nm is also ultraviolet. Although many ultraviolet rays are not seen by the human eye, they are still named for producing a partially violet visible spectrum, and UV LEDs have made great progress in the past few years. This is not only the result of advances in the production of solid-state UV devices, but also the increased demand for environmentally friendly UV lamps.

#science #LED

Good news: RayVio's UVB LED can be used to treat patients with vitamin D deficiency

PR Newswire's research published today in Scientific Reports shows that RayVio's 293nm UV LEDs produce light more efficiently in skin samples than in sunlight. Led by MD F. Holick, MD, and Boston University School of Medicine and Boston University Ignition Award, Tyler Kalajian and his team found vitamin D3 from skin samples exposed to RayVio UV LEDs for just 0.52 minutes. It is more than twice as much as the sample exposed to sunlight for 32.5 minutes.

Dr. Holick, a professor of medicine, physiology and biophysics at Boston University School of Medicine and an endocrinologist at the Boston Medical Center, said: "We tested UV LEDs from different sources and wavelengths. RayVio's 293nm LEDs show the largest vitamins in the shortest amount of time. D3 generates potential. This research will bring a new generation of photopharmacology technology that uses LEDs with specific wavelengths to cause specific biological effects in human skin, helping to treat and prevent chronic diseases."

Vitamin D deficiency can lead to osteoporosis, rickets and other metabolic bone diseases, which are common in the northern and southern latitudes where long-term sunshine is limited throughout the year. This vitamin D generator is suitable for patients with fat malabsorption syndrome such as inflammatory bowel disease and gastric bypass surgery. Studies have shown that RayVio's UV LEDs can be used to treat patients with vitamin D deficiency.

Ultraviolet LED devices that produce vitamin D3 can be used on areas of the skin that are less exposed to sunlight, such as the thighs, arms, abdomen, and back, thereby minimizing the risk of non-melanoma skin cancer. The device also emits a narrower band of UVB (UVB), which reduces the likelihood of skin damage when exposed to higher wavelengths of UV radiation.

Dr. Robert C. Walker, CEO of RayVio, said: “The potential of digital UV technology in phototherapy is enormous. Dr. Holick's research on our UVB LEDs demonstrates the potential of new applications to improve and save hundreds of thousands of lives. In the United States, 75% of adolescents and adults lack vitamin D. Through the efforts of the research team and the groundbreaking work of the Boston University Photonics Center on UV LEDs, we may soon see innovative treatments (such as wearables). Equipment integration) can help millions of people."

led

Thailand (Bangkok) International LED Lighting Exhibition, June 2019 Basic Information: Exhibition time: 2019/6/27 to 2019/6/29 Exhibition location: Bangkok Organizer: Impact Exhibition Management Co., Ltd. India Media Exhibition Co., Ltd. organizer: Exhibition scope: LED application & lighting; LED lighting products; LED products; LED signboard & display; LED originals/accessories and raw materials; LED driver and power supply; LED production equipment / machinery and related products; related services. details With a land area of 513,120 square kilometers, Thailand has a free economic policy and economic development in the 1990s. Fast, one of the "four tigers in Asia", one of the world's emerging industrial countries and one of the world's emerging market economies. But The "98 economic crisis" suffered major setbacks and then fell into recession and stagnation. At present, the resident population of Bangkok, the capital of Thailand, exceeds 10 million. As a big city dominated by tourism, because the local climate is hot and the night is sightseeing time, there is considerable demand for lighting. The market opportunities in the Ming Dynasty are huge. According to statistics, in the first quarter of 2017, among the top 10 countries in which China’s LED lighting products were exported, Thailand Ranked tenth. Thailand is an important economy in Asia and a member of ASEAN. The Wall Street Journal has named it the second largest in Southeast Asia. The economy is second only to Indonesia. With the strong growth of the Thai economy, sports venues, municipal squares, road traffic, airports, campuses, The construction and renovation of supermarkets, banks, etc. are in full swing, and Thailand has a great demand for LED lighting equipment. Thailand’s GDP has continued to grow in recent years. However, Thailand’s industrial base is weak and most industrial products need to be imported. China is One of Thailand's important importing countries is showing an upward trend year by year, among which lighting and LED imports are an important part. Mid 2010 The country and the ASEAN Free Trade Area are open. The two sides have a population of 1.9 billion and a GDP of 6 trillion US dollars. The world’s largest, Chinese companies are marching. ASEAN enjoys zero tariffs, and Thailand, as an important member of ASEAN, is the first choice for Chinese companies to explore the ASEAN market.

#science #led

Seoul Wei proud Shilin Xiaobo: From the chip to the UV full solution, to create the world's top UV LED company

In recent years, UV LED has become one of the niche-type markets for domestic and foreign manufacturers to invest in, and has developed rapidly, causing concern in the industry.

On April 17th, the “2019 Jibang Consulting Global UV LED Industry Seminar” jointly organized by LEDinside and China LED Network of Jibang Consulting kicked off in Shenzhen. The seminar was packed and full of popularity.

At the seminar, Lin Xiaobo, Sales Director of Seoul Viosys Greater China, gave a speech entitled "Application of UV LED in Healthy Home" and shared the latest developments in Seoul's UV LED field.

#sience #uv

Fluence collaborates with the University of the Netherlands to test a full spectrum LED plant lighting solution

Recently, Osram's Fluence released a press release saying that the Wageningen University And Research Center (WUR) cooperated with Fluence and greenhouse agriculture consultant Vortus to release preliminary results of a culture experiment. The feasibility of the Fluence full spectrum LED lighting solution.

The data shows that for some tomato varieties, Fluence's PhysioSpec Greenhouse? spectrum is used to increase tomato yield by 11% compared to high-pressure sodium lamp greenhouse lighting and is more energy efficient.

The press release showed that the study was conducted on Tomagino and Merlice tomato varieties, and Dr. Ep Heuvelink of WUR and his team compared the effects of high-pressure sodium lighting provided by Fluence's PhysicsSpec Greenhouse and a recognized supplier.

Vortus owner Barend Lobker said that many growers now use high-pressure sodium lamp technology as the only source of light for greenhouse lighting, and the WUR test proves that this is not the case. Planters are not sure if LEDs will be able to grow crops equally effectively, so they have been reluctant to switch to LED lighting. The WUR test this time eliminates any doubts about the performance of full-spectrum LEDs.

Fluis's horticultural service expert and senior photobiologist Haris Ouzounis said that this is a very exciting result for the application of full-spectrum LED technology in greenhouse tomato production. The trial demonstrates that even without any environmental optimization for LED solutions, full-spectrum LEDs can match the needs of commercial growers, even more than traditional lighting fixtures.

Fluence said that WUR will release all data later this year. (Compile: LEDinside Janice)

#science #led

UV lamp new use! Safe on the transmission line to reduce bird collision 98%

EDM International, a US provider of sustainable solutions for the power industry, has developed a system that uses ultraviolet light to prevent birds from hitting power lines and reduces collisions by 98%.

According to reports, James Dwyer and his colleagues from EDM International developed an Avian Collision Avoidance System (ACAS), which is equipped with UV lamps on th power line support structure and lights up at night.

They tested the system at the Iain Nicolson Audubon Center in Nebraska, USA, where a power line passed through the Central Platte River. ), and here is the key habitat for migratory sandhill cranes. Every night, they randomly switch the collision avoidance system to observe the behavior of dune cranes flying along the river at dusk and night.

As a result, the recorded data showed that during the opening of the collision avoidance system, the collision between the dune crane and the transmission line was reduced by 98%, and the dangerous flight was reduced by 82%. At the same time, the sandhill crane reacts faster and makes more control to prevent it from hitting the power line.

Dwyer said he studied the collision of birds and transmissions across North America for several years, involving many birds and birds, and even researching wires that have been modified to reduce bird collisions according to industry standards.

Dwyer hopes that ACAS can be applied to other power lines and communication towers to determine whether the system is equally effective for other species, habitats and wire configurations. If the study proves that ACAS is widely effective, he hopes that the collision avoidance system can be easily used by the global power industry.

It is reported that the study was published in The Condor: Journal of Ornithological Applications. (Compile: LEDinside Janice)

#led #science

US Crystal IS introduces 60mW UVC LED for water disinfection

Recently, Crystal IS (a company that manufactures UVC LEDs in Japan's Asahi Kasei) announced that it has added a 60mW UVC LED to its Klaran product line.

According to the company, in an advanced prototype reactor, the 60mW LED demonstrates efficient and economical water treatment with flow rates up to 3 liters per minute and a disinfection rate comparable to NSF / ANSI 55 Class 'A'. The existing water-disinfecting LED and water treatment reactors in the Klaran range are used to treat water points (PoU) at flow rates up to 2 liters per minute with a disinfection rate comparable to NSF / ANSI Class 'B'.

The new reactor is expected to be launched in early 2020, and users can replace LED "engines" to meet different market performance requirements and business revenue models for the commercial water industry. According to Eoin Connolly, vice president of Klaran, "Our new 60mW LEDs demonstrate that UVC LEDs can cost-effectively meet the performance needs of the commercial and consumer point-of-use markets."

The company said its portfolio enables manufacturers and distributors of point-of-use products to reduce total cost of ownership by addressing maintenance issues associated with traditional UVC technologies, such as annual replacement and unplanned maintenance. He also said that "unplanned UV lamp failure will soon bring hundreds of dollars to the service provider, which will seriously affect the profit margin." "Our rigorous testing provides a strong guarantee for the reliability and performance of Klaran products. Data evidence." (Compile: LED network James)

How is the commercialization of Micro LEDs going? Check the latest development progress of global manufacturers

Since Apple acquired the Micro LED startup LuxVue in 2014, Micro LED, which has been hailed as the next generation display technology, has officially entered the growth stage since the beginning of the germination period, attracting global manufacturers to continue investing in resource research and development, but many technical obstacles and equipment limitations are difficult to overcome. As a result, production costs can never be reduced, and Micro LEDs are still on the road to commercialization.

#science

Efficient: sterilization effect can be up to 99.9% in short time. UVC LED 3535 SMD 275nm 3-5mW

The main mute has no interference. The mosquito killer adopts a DC motor fan to provide humanized noise reduction design while providing sucking force, and low-decibel air intake to catch mosquitoes. In addition, this mosquito killer also uses environmentally friendly plant materials, which are non-toxic, harmless and odorless.

Instructions:

1. In the bedroom, anti-mosquito can be opened in advance (at least 2 hours), do not start until you sleep, affecting the use effect.

2. It is better to use in an unmanned environment, because people's body temperature and odor can induce mosquitoes and avoid affecting the use effect.

3, this product uses physical anti-mosquito method, so the anti-mosquito is not a boot can be immediately effective.

4. Please close the doors and windows during the daytime use, and pull up the curtains to ensure that they are used in a dark environment. Place them as far as 1 meter above the ground. Do not open the lights or open the doors and windows. Do not put them in the air outlet or the fan outlet. When turning off all other lights, try to ensure that the mosquito lamp is the only source. (Source: Fast Technology)

#sience #tchnology

New technology of Led

Crystal IS (a company that manufactures UVC LEDs in Japan's Asahi Kasei) announced that it has added a 60mW UVC LED to its Klaran product line for water disinfection.

#science #led

UV INK Curing Lamp 395nm 800WProduct Feature:1. High light intensity2. Light intensity auto ajust according printer speed3. Light intensity and be adjust and display4. Light can on/off part or full according different print size5. Temperature display and over temperature control6. Single UV lamp can be controlled independently7. Warning while short circuit

#science #technology

UV Toothbrush Sanitizer

UV Toothbrush Sanitizer product description: DUV LED (wavelength <280nm) is a new generation of deep ultraviolet light source, safety and environmental protection, efficient sterilization.

*This product uses the security design, which can effectively prevent UV leak harm the human body.

#science #health

UV CONTACT LENS SANITIZER

DUV LED (wavelength <280nm) is a new generation of deep ultraviolet light source, Safety and environmental protection, efficient sterilization.

This product uses the security design, which can effectively prevent UV leak bodily injury.

#health #science

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