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Dielectric HR Mirror

http://www.hypoptics.com/components/mirrors/dielectric-hr-mirror.html

Reflective film from the coating material can generally be divided into two categories; one is the reflective metal film, one is all dielectric reflective film.

Media reflection film using the principle of multi-beam interference, which, contrary to the media anti-reflective film, can significantly improve the light in the air glass interface reflectivity. By alternately plating high and low refractive index multilayer films on the surface of the lens, the synthetic amplitude of the reflected light can be increased, and the reflectivity of the reflective film can be more than 99.9% of specially optimized design. In contrast, the reflectivity of the reflective metal film is only 97%.

At the same time, the dielectric film in the air stability and wear resistance is better than the metal film.

Plane mirrors also known as front surface mirrors, or first surface mirrors are used in beam steering or reflecting applications.

We stock four grades of plane front surface mirrors with a range of up to six coatings to meet applications in the UV, Visible, NIR and FIR applications.

Precision λ/10 front surface mirrors: They are manufactured from borosilicate material. Using LEGB borosilicate or equivalent ensures the mirror has low coefficient thermal expansion properties. These mirrors are used in high demanding beam steering and reflection applications such as imaging and astronomy. We stock precision λ/10 front surface mirrors coated for visible wavelength with aluminum/SiO₂ and the high reflective dielectric covered 99% mirror coating for high energy laser applications.

Precision λ/4 front surface optical mirrors: Ours is not as expensive as the λ/10 versions. Used in many scientific instruments where quality is important but the use of the λ/10 versions cannot be justified. We stock precision λ/4 front surface mirrors coated for UV, visible, NIR and IR applications. For UV applications as small as 180nm our quality ¼ wave mirrors are covered with aluminum/ Mgf². For visible applications, our λ/4 front surface mirrors are coated with aluminum/SiO₂, and high reflective dielectric coated 99% mirror coating. For near infrared applications, we have a range of ¼ wave mirrors coated with dielectric 98% that works efficiently to YAG wavelength of 1064nm. Our range of λ/4 front surface mirrors for applications in NIR and FIR mirrors are covered with protected silver that performs well in the visible and up to 2000nm in the NIR, and our protected gold painted quality ¼ wave mirrors work from 750nm NIR into far infrared applications.

Guaranteed 1λ over 25mm front surface mirrors: Our range of 1λ over 25mm front surface mirrors are less expensive than a ¼ wave and 10th wave mirrors but still achieve reasonable results in demanding applications. These cost effective one wave mirrors are available in UV/ aluminum, enhanced aluminum and dielectric 99% coating for use in the visible. These one wave mirrors are typically are usually used in more demanding imaging applications where image quality is important. Our range of 1 wave front surface mirror (first surface mirrors) are selected for guaranteed flatness of 1 wave over 25mm aperture and individually tested to ensure they meet specification. They are manufactured from standard pre-coated sheet material. We stock this range from UV through to infra-red to fit most scientific instrumentation applications. Our pre-coated sheets of mirror substrates are shared as 145x100mm plates.

General purpose front surface mirrors: Our general-purpose grade of front surface plane mirrors are manufactured from standard coated sheet material. These general purpose grades of first surface mirrors are available with a multitude of coatings for an extensive range of the scientific instrument and lighting applications. Our stock range of front surface plane mirrors are made from high-quality float glass and are available in thicknesses of 1mm, 3mm, and 6mm thick as standard.

Stock general purpose grade mirrors can also be edges to smaller diameters and other shapes at short notice. These mirrors are stocked in large sheets so larger sizes up to 1000mm square are available for projector applications.

Our stock ranges of front surface / first surface mirrors are all available in a variety of coatings to meet most applications:

Enhanced aluminum 94%R for visible applications.

99.9% dielectric for laser use in visible applications.

UV aluminum for UV applications down to 180nm.

98.5% dielectric for laser use in the NIR applications.

Ion plated silver for NIR-2000nm applications.

Protected gold for 750nm to remote infra-red applications.

Contact our technical sales team for further advice about dielectric mirror design and assistance.

#Dielectric #Mirror

Dichroic Mirror

http://www.hypoptics.com/components/mirrors/dichroic-mirror.html

Hyperion Optics’s complete range of cost effective dichroic filter range offers superior transmission, reflection and absorption characteristics.

Dichroic filters consist of thin film dielectric coatings on glass and exhibit sharp transitions between transmitted and reflected wavelengths. Dichroic filters are similar to traditional interference filters but differentiate themselves by reflecting all unwanted wavelengths. Consequently our dichroic range also offers minimal absorbance characteristics.

Our dichroic filters are available in longpass, shortpass, bandpass, bandblocking and colour correction types over a range of wavelengths. Dichroic shortpass and longpass filters can also act as hot and cold mirrors respectively. Click on the links below for more information on individual dichroic filter types.

#dichroic #mirror

Concave Mirror

http://www.hypoptics.com/components/mirrors/concave-mirror.html

The concave mirror is the reflection imaging, it is not the light through, but the reflection back to the imaging instrument, the light observes the reflection law. A concave mirror is a spherical mirror which has no chromatic aberration because there is no refraction but still has a spherical aberration. If a mirror without spherical aberration is required, a parabolic / ellipsoidal / hyperboloid mirror can be selected.

Concave mirrors can be used to create images of light sources. Concave mirrors can be tricky to use as the object and image will now exist in the same space. However concave mirrors have one incredible characteristic in that the image location and quality is completely independent of the wavelength and so does not create chromatic aberration unlike equivalent lens optics. This allows the design of very wide spectral range instruments and does allow a system that will work in the IR to be aligned using visible light.

Concave mirrors are typically used in reflecting telescope, electron microscopes and a range of scientific instrumentation applications where there is a requirement to image distant objects.

Our range of quality concave mirrors are coated for use in the visible and near infra-red regions. We can also strip the aluminium coating from our stock concave mirrors and coat with a desired coating, i.e. Protected Gold or UV aluminium. This can be done at short notice to create your bespoke custom concave mirror. This can be very helpful with development work.

#Concave #Mirror

Cold & Hot Mirror

http://www.hypoptics.com/components/mirrors/cold-hot-mirror.html

Heat mirrors and cold mirrors are special bandpass filters that can reflect infrared light and ultraviolet light and only allow visible light to pass through, also known as heat-absorbing filters, also known as IR cut filters. Heat Mirror will be a large number of heat generated near-infrared light isolated optical path to protect the heat-sensitive devices, where the need for high light intensity and need to be separated from the heat applications can be.

#mirror #hot

Mirrors Spherical Reflection Mirrors, Off-Axis Parabolic Mirrors, Plano Mirrors With High Reflection Coating

http://www.hypoptics.com/components/mirrors/

Optical Mirrors are designed to reflect light for a variety of applications, including beam steering, interferometry, imaging, or illumination. Optical Mirrors are used in a wide range of industries, such as life sciences, astronomy, metrology, semiconductor, or solar.

Hyperion Optics offers a range of laser, flat, metal substrate, focusing, or specialty Optical Mirrors in a multitude of reflective coating options, including Protected Aluminum, Enhanced Aluminum, Protected Silver, Protected Gold, or Dielectric. Choosing the proper reflective coating option ensures high reflectivity of the needed wavelength or wavelength range. Optical Mirrors designed for laser applications are optimized for the given laser wavelength. Additionally, Optical Mirrors designed for lasers feature damage thresholds that are suitable for the designated laser. Metal substrate Optical Mirrors are ideal for applications requiring a constant coefficient of thermal expansion between the Optical Mirror and the mount. Optical Mirrors with a concave surface are ideal for light focusing applications.

Optical mirrors have a smooth, highly-polished, plane or curved surface for reflecting light. Usually, the reflecting surface is a thin coating of silver, or aluminum on glass. Product specifications for optical mirrors include diameter, radius of curvature, thickness focal length, and surface quality. The diameter or height of an optical mirror is measured straight on. If the optical mirror’s curvature was extrapolated into a sphere, then the radius of that sphere is the radius of curvature for the mirror. There are two thickness measurements for optical mirrors: center thickness and edge thickness. Units of measure include inches, feet, and yards; nanometers, centimeters, and millimeters, and miles and kilometers. With optical mirrors, focal length is the distance from the mirror at which light converges. Surface quality describes digs and scratches. A dig is a defect on a polished optical surface that is nearly equal in terms of length and width. A scratch is a defect whose length is many times its width.

Optical mirrors are made from many different materials, each of which influences the mirror’s reflectivity characteristics. Choices for materials include borosilicate glass, copper, fused silica, nickel, and optic crown glass. Borosilicate glass is also known as BK7 and boro-crown glass. Copper is used in high-power applications because of its high thermal conductivity. Fused silica has a very low coefficient of thermal expansion and is suitable for use with moderately-powered lasers or changing environmental conditions. Ultraviolet (UV) grade optical mirrors are also commonly available. Nickel is used in applications which require resistance to both thermal and physical damage. Proprietary materials for optical mirrors include Pyrex (Corning Inc.) and Zerodur (Schott Glaswerke).

Optical mirrors are sometimes coated to enhance their reflectivity. Choices include bare, enhanced, and protected aluminum; silver, bare gold and protected gold; and coatings made from rhodium and dielectric materials. Enhanced aluminum coatings are used to improve reflectance in the visible and ultraviolet regions. Protected aluminum coatings provide abrasion resistance while protecting the surface of the aluminum, an excellent reflector in the upper UV, visible and near-infrared (IR) regions. Optical mirrors with bare gold and protected gold coatings are used in the near-IR to far-IR regions. Silver coatings provide better reflectance than aluminum; however, silver’s tendency to oxidize and tarnish requires thorough sealing from the atmosphere. Rhodium coatings have a reflectivity of approximately 80% of the visible spectrum.

Definition of Mirrors

Mirror is an optical element that uses the law of reflection. In the past, when the mirror was made, it was often silver coated on the glass. The standard process is: after vacuum steaming aluminum on a highly polished substrate, it is then coated with a silicon oxide or magnesium fluoride. Since the law of reflection is independent with the frequency of light, such components have a wide range of working bands and can reach the ultraviolet and infrared regions of visible spectrum, so its application is more and more extensive.

Whether the mirror’s reflective effect is good depends on the wavelength of the incident light (i.e. the light source) and the surface finish of the coating. The output power of the laser can be multiplied if applied with reflector of high reflection ratio. It is reflected from the first reflector, and the reflection image is not distorted without double shadow. If we use a normal mirror, it not only has low reflectivity, but also has no selectivity of wavelength, and can produce double shadow. However, with the coating membrane mirror, the image obtained is not only high in brightness, but also precise and accurate, with clearer picture quality and more realistic color.

Types and Application of Optical Mirrors

The mirror is divided into three kinds in shape: plane mirror, spherical mirror and aspheric mirror. It can also be divided into complete reflectors and semi-permeable mirror by the degree of reflection. The optical mirror is designed to reflect light in a variety of applications, including beam deviation, interferometry, imaging or lighting.

Plane mirror is usually made of silver-plated or aluminium-plated flat glass. A plane mirror is a virtual image of a virtual object. It is the only optical element that does not damage the single heart of the beam and can form a perfect image.

The reflection surface of a spherical mirror is a sphere. If the center of the ball is located on the illuminated face, it is called a concave mirror. If the center of the ball is located on the other side of the illuminated face, it is called a convex mirror. The concave mirror is a convergent mirror. The parallel beam is reflected and will converge at one point, which is the real focus. The light source is placed in the focus position and the beam is reflected back into a parallel beam. The convex mirror is a divergent mirror, and the parallel beam is reflected by it to be a divergent beam, and the backward extension of the reflected ray is delivered to a point, which is the virtual focus. The observation mirror on both sides of the car's cab is a convex mirror, and objects in the distance form a shrinking image near the virtual focus.

Aspheric mirror can be classified into parabolic mirror, hyperboloids mirror, elliptic mirror, tapered surfaces and cylindrical mirror. The beam of a parallel axis of light is reflected in a paraboloid mirror and is concentrated in the focal point of the paraboloid. And in the reflector telescope, it can be used to make the distant star imaging in the focal point. Instead, a beam of light emitted by the focus is reflected by a parabolic mirror and then forms a parallel beam for the searchlight. Hyperboloid and elliptic mirrors are often used in special optical systems to simplify the structure and improve image quality.

#optical #mirrors

Zinc Sulfide Lenses

http://www.hypoptics.com/components/infrared-lenses/zinc-sulfide-lenses.html

With the rapid development of military weaponry and correlative targeting and monitoring systems, ZnS is widely utilized in multi-spectral IR applications. Its relatively high transmittance through 3-5µm and 8-10µm enable ZnS being an ideal choice for multi-spectral applications. Further, within NIR and SWIR range, CLEARTRAN CVD ZnS can also be considered as indispensable alternative for optical designers.

CLEARTRAN ZnS

Hyperion Optics uses CLEARTRAN ZnS multi-spectral material from ROHM&HAAS, typical material arrival lead time is 2 weeks. CLEARTRAN ZnS is modified by post-deposition hot isostatic process from CVD Zinc Sulfide, which contributes to transmittance from visible till far infrared ranges (0.35 to 14µm). Therefore, ZnS has become an imperative choice for IR lenses, laser windows and thermal imaging applications.

Hyperion Optics’ ZnS lenses are especially suitable for systems that involve visible camera, mid-wave and long-wave detectors, and further laser rangefinders to designate targets. Our CLEARTRAN ZnS windows also can be used for external windows for particular sensor applications.

ZnS is comparatively soft cubic crystal in manufacturing, meaning it is easily to leave scratches in grinding and polishing processes, which lead to a complicated quality control of both cosmetic and surface accuracy. Hyperion Optics invested heavily in ZnS component manufacturing capability improvement, enables our engineers master the optimal processing techniques in return helps Hyperion Optics to meet customers’ expectation without compromise. ZnS aspheric lenses are also available for your application; please refer toIR Aspheric Lenses for more information. ZnS Dome optics is also available in our Domecategory.

Our ZnS lenses are also available with AR coating according to specific requirement. Please take great care when handling, mounting and cleaning ZnS lenses, further, For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward.

Find out what we can help you with ZnS components today, we will be more than happy to evaluate your part and provide our professional suggestions from production perspective.

ZnS (CLEARTRAN) Refractive Index vs. Wavelength

Wavelength (µm)

Index

Wavelength (µm)

Index

Wavelength (µm)

Index

Wavelength (µm)

Index

0.4047

2.54515

0.6678

2.34033

1.5296

2.27191

9.000

2.21290

0.4358

2.48918

0.7065

2.33073

2.0581

2.26442

10.000

2.20084

0.4678

2.44915

0.7800

2.31669

3.000

2.25772

11.250

2.18317

0.4800

2.43691

0.7948

2.31438

3.500

2.25498

12.000

2.17101

0.5086

2.41279

0.8521

2.30659

4.000

2.25231

13.000

2.15252

0.5461

2.38838

0.8943

2.30183

4.500

2.24955

0.5876

2.36789

1.0140

2.29165

5.000

2.24661

0.6438

2.34731

1.1287

2.28485

8.000

2.22334

Zinc Sulfide

COMMERCIAL GRADE

FACTORY STANDARD

PRECISION GRADE

Diameter Tolerance(mm)

+0/-0.20

+0/-0.10

+0/-0.025

Center Thickness(mm)

±0.20

±0.15

±0.025

Radius (%)

±2%

±1.5%

±1%

Focal Length Tolerance (%)

<3%

<1.0%

Cosmetic(MIL-C-13830A)

80-50

60-40

40-20

Figure Tolerance in λ(Pow/irreg)

5 - 2

2 - 1/2

1 - 1/4

Centration (Arc min)

5'

3'

1'

Dia. To Thick Ratio

9~50:1

Coating (R% avg)

<2.0%@ VIS-SWIR , <1.5% @ 3~5µm or 8~12µm

Materials

CVD Zinc Sulfide and CLEARTRAN CVD ZnS

#cleartran

Zinc Selenide Lenses

http://www.hypoptics.com/components/infrared-lenses/zinc-selenide-lenses.html

Zinc Selenide has great transmittance through the band 0.5-22μm, especially at 10.6μm, and is commonly used in thermal imaging and FLIR systems, also its outstanding low absorption coefficient and high resistance to thermal shock makes it an ideal choice for high power CO2 laser applications. For laser ZnSe components please browse our Laser Optics category for more information.

Since Zinc Selenide is a relatively soft material that scratches and digs can be easily remained on the surfaces during processing flow, it is not recommended for use within harsh environments, Hyperion Optics’ advanced manufacturing techniques for ZnSe ensure superior surface quality compared to our competitors. For cosmetic sensitive systems, our best effort can reach 20-10 in S/D grade. ZnSe aspheric lenses are also available for your application; please refer toIR Aspheric Lenses for more information. ZnSe Dome optics are also available in ourDomecategory.

Zinc Selenide design

Our ZnSe lenses are also available with AR coating according to specific requirement. Please take great care when handling, mounting and cleaning ZnSe lenses, further, For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward.

ZnSe Refractive Index vs. Wavelength

Wavelength (µm)

Index

Wavelength (µm)

Index

0.62

2.5994

10.60

2.4028

1.00

2.4892

13.00

2.3850

3.80

2.4339

14.60

2.3705

5.00

2.4295

16.60

2.3487

7.00

2.4218

17.80

2.3333

9.00

2.4122

18.20

2.3278

Zinc Selenide

COMMERCIAL GRADE

FACTORY STANDARD

PRECISION GRADE

Diameter Tolerance(mm)

+0/-0.20

+0/-0.10

+0/-0.025

Center Thickness(mm)

±0.20

±0.15

±0.10

Radius (%)

±2%

±1.5%

±1%

Focal Length Tolerance (%)

<3%

<1%

Cosmetic(MIL-C-13830A)

80-50

60-40

40-20

Figure Tolerance in λ(Pow/irreg)

5 - 2

2 - 1/2

1 - 1/4

Centration (Arc min)

5'

3'

1'

Coating (R% avg)

<1.5% @ 3~5µm or 8~12µm

Materials

CVD Zinc Selenide

#hyp #design

Silicon Lenses

http://www.hypoptics.com/components/infrared-lenses/silicon-lenses.html

Hyperion Optics utilize optical grade silicon which is specified with a resistivity of 10-40 Ohm-cm higher than most semiconductor applications. For CZ grade silicon (Czochralski method) has a absorption band at 9μm, this is acceptable if the application is used range of 3 to 5μm thermal band. On the other hand float zone silicon does not has this absorption property. Please verify your application working wavelength when inqury with Hyperion Optics.

Silicon lenses are normally used in the 2-7µm range, ideal element for IR LED applications, high thermal conductivity and low weight are considered as critical features in boeth IR and FTIR systems with refractive index 3.4 throughout the range. Silicon windows can be used as high reflectivity mirror for lasers and IR viewports, please refer to ourSilicon Windows for more information.

We are capable of manufacturing 3-300mm in diameter silicon lenses for collimating or focusing applications, with AR coating or DLC coating. Coating simulation can be provided upon request along with your inquiry feedback.

Silicon Lenses

COMMERCIAL GRADE

FACTORY STANDARD

PRECISION GRADE

Diameter Tolerance(mm)

+0/-0.20

+0/-0.10

Center Thickness(mm)

±0.20

±0.15

±0.10

Radius (%)

±2%

±1.5%

±1%

Focal Length Tolerance (%)

<2%

<1%

<0.5%

Cosmetic(MIL-C-13830A)

80-50

60-40

40-20

Figure Tolerance in λ(Pow/irreg)

5 - 2

2 - 1/2

1 - 1/4

Centration (Arc min)

5'

3'

1'

Dia. To Thick Ratio

9~35:1

Coating (R% avg)

<1.5%@3-5um

Materials

Optical Grade Silicon

#silicon #lens

The Use of Cylindrical Lens

Cylindrical Lens can be used in a single axial convergence or divergence of the beam and found in optical measurement, laser scanning, spectroscopy, laser diode output beam shaping, the X-ray light microscopic imaging, and many other industries and fields have a wide range of applications.

Turn the quasi-direct light source into the line light source

L = 2(r0/f)(z+f)

It is the most extensive application of cylindrical lens. As shown in the figure below, The quasi-direct light source with radius r0 is irradiated into a concave cylindrical lens with a focal length of -f(The image is in order to illustrate the principle more clearly, so amplify the beam radius). The beam will diverge in half theta (theta = r0 / f). At this point, it can also be approximated as the divergence of the point source at the focal point -f. The distance to the back of the lens is z. The width of the line beam is 2r0 (ignoring the divergence of the Gaussian-distributed beam spot), but the length of the line beam is changed

L = 2 (r0 / f) (z + f)

When z is greater than f, the expansion ratio approaches z/f, and the length of the line is proportional to z.

If need in the z produces width is very narrow line light source, can be in the plane concave cylindrical lens front end or back end of a flat convex cylindrical lens focal length for z, with the orthogonal plane concave cylindrical lens place, to compress the beam width.

【 Quick Start】The focus and alignment of light

The diode outputs beam of collimation

The laser diode output beam diverges in an asymmetric form, and its quasi-direct work is more challenging. for example, to divergence angle theta. Theta 1 x 2 = 10 ° x 40 ° diode light source, if only use the standard spherical lens, and only in a single direction on collimating, another direction divergence or convergence will happen. Using a cylindrical lens that the problem is decomposed into two one-dimensional directions, through the combination of two orthogonal cylinder lens, two directions can be collimated at the same time.

http://www.hypoptics.com/the-use-of-cylindrical-lens.html

#Cylindrical #lens

F-theta Lenses

The F-Theta scanning lenses are commonly used in laser scanning systems that employ two-axis galvanometers to scan a specified area but cannot tolerate the angle at the image plane. By introducing a specified amount of barrel distortion in a scanning lens, the F-Theta scanning lens becomes an ideal choice for applications that require a flat field on the image plane such as laser scanning, marking, engraving and cutting systems. Depending on the requirements of the application, these diffraction limited lens systems can be optimized to account for wavelength, spot size, and focal length, and distortion is held to less than 0.25% throughout the field of view of the lens.

In addition to these standard designs, we can develop complete systems for you, use components from laser beam shaping to the expansion and splitting of laser beams.

Details

F-theta Lenses can shoot and form the image of objects of limited distance. It provides full glass high-performance lens, and different lenses meet the functions of A3, A4, barcode scanning. It is applied to the flatbed scanner and high shot instrument equipment. The lens is close to the diffraction limit and has small distortion, which meets the requirements of use.

The principles of F-theta Lenses:

To change the directions of beams through moving the scanner. To make the movement become the one of the focus on the focal plane by focus lens’s focusing. Laser scanning can be divided into pre-objective scanning and scanning after the objective lens. Usually scanning device with the high requirement is pre—objective scanning.

The special characteristics of scanning objective:

1. Scanning objective belongs to the imaging difference system with a small aperture, which requires rather high optical resolution.

2.Because of a photoelectric device, it should not only adjust the aberration of white light (mixed light), but consider aberrations of three independent wavelengths of R, G and B.

3. To correct the distortion aberration.

http://www.hypoptics.com/lens-assembly/f-theta-lenses.html

#f-theta #objective #lens

ZnSe ZnS window

Low Dispersion

Available Uncoated or AR Coated

Ideal for Thermal Imaging, FLIR, and Medical Systems

Hyperion Optics Zinc Selenide Windows (ZnS Windows) are perfect for a wide variety of infrared applications including thermal imaging, FLIR, and medical systems. This chemical vapor deposited material has extensive usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal shock. Zinc Selenide (ZnSe) is a relatively soft material that scratches easily, and it is not recommended in harsh environments because its Knoop Hardness is only 120. When handling, apply uniform pressure and wear Latex finger cots or gloves to prevent contamination.

Note: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid the risk of contamination.

Uncoated or with AR Coatings Designed for a Variety of IR Ranges

Minimal Chromatic Aberration Due to Low Dispersion

Ideal for Infrared Applications Requiring Rugged Optics

Hyperion Optics Germanium Windows are available off-the-shelf with three anti-reflection coating options: 3 - 5μm for mid-infrared applications, 3 - 12μm for broadband multispectral applications, or 8 - 12μm for thermal imaging applications. Due to its high index of refraction (around 4.0 from 2 - 14μm), an anti-reflection coating is recommended for these germanium windows for sufficient transmission in the region of interest. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such, these germanium windows should be used at temperatures below 100°C. Germanium’s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems. The Knoop Hardness of germanium (780) is approximately twice that of magnesium fluoride, making it ideal for infrared applications requiring rugged optics.

http://www.hypoptics.com/components/windows/znse-zns-window.html

#zns #window

Zinc Sulfide Lenses

With the rapid development of military weaponry and correlative targeting and monitoring systems, ZnS is widely utilized in multi-spectral IR applications. Its relatively high transmittance through 3-5µm and 8-10µm enable ZnS being an ideal choice for multi-spectral applications. Further, within NIR and SWIR range, CLEARTRAN CVD ZnS can also be considered as indispensable alternative for optical designers

Hyperion Optics uses CLEARTRAN ZnS multi-spectral material from ROHM&HAAS, typical material arrival lead time is 2 weeks. CLEARTRAN ZnS is modified by post-deposition hot isostatic process from CVD Zinc Sulfide, which contributes to transmittance from visible till far infrared ranges (0.35 to 14µm). Therefore, ZnS has become an imperative choice for IR lenses, laser windows and thermal imaging applications.

Hyperion Optics’ ZnS lenses are especially suitable for systems that involve visible camera, mid-wave and long-wave detectors, and further laser rangefinders to designate targets. Our CLEARTRAN ZnS windows also can be used for external windows for particular sensor applications.

ZnS is comparatively soft cubic crystal in manufacturing, meaning it is easily to leave scratches in grinding and polishing processes, which lead to a complicated quality control of both cosmetic and surface accuracy. Hyperion Optics invested heavily in ZnS component manufacturing capability improvement, enables our engineers master the optimal processing techniques in return helps Hyperion Optics to meet customers’ expectation without compromise. ZnS aspheric lenses are also available for your application; please refer toIR Aspheric Lenses for more information. ZnS Dome optics is also available in our Domecategory.

Our ZnS lenses are also available with AR coating according to specific requirement. Please take great care when handling, mounting and cleaning ZnS lenses, further, For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward.

Find out what we can help you with ZnS components today, we will be more than happy to evaluate your part and provide our professional suggestions from production perspective.

http://www.hypoptics.com/components/infrared-lenses/zinc-sulfide-lenses.html

#cleartran #window

Zinc Selenide Lenses

Zinc Selenide has great transmittance through the band 0.5-22μm, especially at 10.6μm, and is commonly used in thermal imaging and FLIR systems, also its outstanding low absorption coefficient and high resistance to thermal shock makes it an ideal choice for high power CO2 laser applications. For laser ZnSe components please browse our Laser Optics category for more information.

Since Zinc Selenide is a relatively soft material that scratches and digs can be easily remained on the surfaces during processing flow, it is not recommended for use within harsh environments, Hyperion Optics’ advanced manufacturing techniques for ZnSe ensure superior surface quality compared to our competitors. For cosmetic sensitive systems, our best effort can reach 20-10 in S/D grade. ZnSe aspheric lenses are also available for your application; please refer toIR Aspheric Lenses for more information. ZnSe Dome optics are also available in ourDomecategory.

Our ZnSe lenses are also available with AR coating according to specific requirement. Please take great care when handling, mounting and cleaning ZnSe lenses, further, For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward.

http://www.hypoptics.com/components/infrared-lenses/zinc-selenide-lenses.html

#ZnSe #Lenses #zinc #cselenide #lens

Sapphire Lenses

Sapphire is the best medium for spherical lenses that require a broad spectrum of light transmission and high optical clarity, especially in demanding applications such as laser system or working under harsh environmental conditions. With its excellent hardness, high thermal conductivity and resistance to chemical acids and alkalis, sapphire’s physical property is hard to machine, also requires unique polishing techniques.

At Hyperion Optics, our technicians are able to deliver excellent accuracy exactly customers ask for, no matter the finished products are used through infrared wavelength or within UV range, our sapphire products suit following applications:

Endoscopes & medical optical applications

Infrared (IR) sapphire optics for laser systems

Sapphire optics for LEDs & lighting applications

Sapphire lenses, reflectors & holders for fiber optics applications

Sapphire light pipes & light guides for IR transmission

Our precision sapphire lenses are widely used in imaging optics, chemical and erosion resistance front surface optics as well as focusing lenses.

http://www.hypoptics.com/components/infrared-lenses/sapphire-lenses.html

#sapphire #lens #Lenses

Calcium Fluoride Lenses

Hyperion Optics supplies uncoated 1/2 inch and 1 inch in diameter Calcium Fluoride (CaF2) lenses. Please talk to our technicians for your custom requirement. We are also able to provide coated products with AR coating through 1.65µm or 2-5µm.

CaF2 has high transmission rate through 0.18-8.0 microns, used for UV and IR spectral high transmission applications. With its outstanding laser power damage threshold CaF2 lenses also are widely used under excimer laser environment. Its refractive index is comparatively low from 180nm up to 8.0 microns, ranges from 1.35 to 1.51. CaF2 has low dispersion, in visible wavelength applications, it shows superior vivid and exquisite imaging performance compared to regular optical glasses.

However, Calcium Fluoride components are difficult to manufacture in actual production. The material itself is soft and easy to leave fabrication marks and scratches on the polished surfaces. At Hyperion Optics, with our decade experience of CaF2 production, we have outstanding surface accuracy and cosmetic control method, our typical surface quality grade is 40-20 according to MIL-C-13830A.

http://www.hypoptics.com/components/infrared-lenses/zinc-selenide-lenses.html

#Calcium #Fluoride #Lenses #CaF2

Achromatic Triplet Lenses

A triplet lens is a compound lens consisting of three single lenses. The triplet design is the simplest to give the required number of degrees of freedom to allow the lens designer to overcome all Seidel aberrations.

Calcium Fluoride and UV Fused Silica Elements

Broadband Color-Corrected Design from 193nm to 1000nm

Ideal for Fluorescence and Spectroscopy Applications

Designed with broadband applications in mind, our UV-to-NIR corrected lenses provide a consistent focal length (see chromatic shift information below) and spherical aberrations free performance for wavelengths ranging from 193nm to 1000nm. Manufactured with premier grades of Calcium Fluoride and Fused Silica, these infinite-conjugate triplets are perfect for imaging applications utilizing a wide spectrum of wavelengths. Typical uses include fluorescence research in which the emitted light is in the visible and near infrared regions of the spectrum or in dual-pass systems in which the same lens is used to illuminate the excitation material as well as collect the emissions from it.

COMMERCIAL GRADEFACTORY STANDARD PRECISION GRADE

Diameter Tolerance(mm) ±0.05 ±0.03 ±0.0125

Center Thickness(mm) ±0.01 ±0.03 ±0.025

Radius (%) ±1% ±0.5% ±0.3%

Focal Length Tolerance (%) ±3% ±1% ±0.5%

Cosmetic(MIL-C-13830A) 100-80 40-20 10-5

Figure Tolerance in λ(Pow/irreg)3 - 1 2 - 1/4 1 - 1/10

Centration (Arc min) 6 <3 <1

Dia. To Thick Ratio 9~50:1

Coating (T% avg) 96-98% 99% 99.5%

Materials

For extremely precision sensitive system requirement, achromatic lens buys please contact us for further new information on optical materials, our engineers are more than happy to evaluate your design and have our experiences of manufacturing input help to define the most appropriate tolerances.

http://www.hypoptics.com/components/achromatic-lenses/achromatic-triplet-lenses.html

#achromatic #triplet

Anamorphic Lenses introduction, to buy from high quality manufacturer

Hyperion Optics specialized in custom anamorphic lenses design and production. We have been customizing unique applications such as projection and anamorphic photography. Generally speaking, these lenses are special tools that affect the aspect ratios and get projected onto the camera sensor.

Compared to spherical lenses, which are common and project images onto the sensor without causing aspect ratio change, anamorphic lenses compressing along the longer dimension, which require subsequent stretching, in post-production or at the projector to be properly displayed.

With our high quality

achromatic cylindrical lenses

production capability, we are able to meet the most demanding anamorphic design performance, please refer to our cylindrical lens fabrication capability. To note, in some cases, custom design achromatic cylindrical lenses are extremely thick in CT, we are able to cement singlet parts on real time alignment device to avoid thickness unavailability of certain materials.

Here is a great sample that how anamorphic projection lenses can contribute:

We begin with a cinemascope screen. Here we e displaying a 2.35 or 2.40 film, Note the black bars top and bottom.

The first step is to electronically stretch the image vertically. This feature can be found many projectors and Blu Ray players. We have taken the active illuminated pixels in the black bars and scaled them back into the image. This process increases the overall on screen luminance or brightness. Once vertically stretched, everything on screen looks tall and skinny- compare the image below with the image above.

The final step is the optical expansion of the vertically stretched image to restore the geometry and to fill the entire cinemascope screen with active image. The result here is an image that is 78% larger than the original- Now compare top and bottom images.

Highlights of Hyperion Optics ?anamorphic design

Expected aspect ratio control

Sharp image quality, MTF can be tested according to requirement

Excellent achromatic feature

Design fit for 2.35, 2.39 and 2.4 aspect ratio

Theatrical cinema projection design available

Structural Design: Introduction to Connection Form of Optical Components

One onnection requestIn order to ensure that optical instruments are false, some require the quality of light, and the connection between optical components and mechanical is as follows

1) The relative position between the optical parts and the mechanical parts should be accurate. A lens optical system should be used to ensure the accurate distance between lenses and lenses. And as a component made of non-circular optical systems, optical components should be asked of a working face with mechanical components on a point, line, or face the relative position between the right.

2 t is easy to assemble, adjust, and ensure the strong, stable and reliable connection.

3 t will not lead to the distortion of optical components or the production of large internal stresses, which will not alter the performance of optical components.

4 he SS ensures that when the temperature of the environment changes, the internal stresses resulting from the connection and optical components are minimized, which will not affect the performance of the optical components.

5 leaning of optical components do not affect the light road and the area of the light.

Two he connection of optical componentsRound

optical components

include lenses, splitters, filters, mirrors and protective glass. Common connections for rolling edge, compression ring, elastic press, electroplating, cementing and so on.

1.The connection of rolling edge

The connection of rolling edge is unbroken and the connection structure is shown in figure 13.35. Its structure is simple, compact, light area of effect is very small, but the connection may occur a phenomenon that the tilt and pressure are uneven, aberration goes bad and affect the imaging quality, for larger diameter circular optical components is more serious. As a result, this type of connection structure is usually used for less demanding, smaller sizes.

2.The connection of compression ring

The compression ring connection is detachable. This connection is convenient for assembly and adjustment, if necessary, add elastic space ring, can make the pressure force is uniformly distributed on the optical components, and can reduce the influence of temperature on the compression force. This connection is suitable for the larger, more demanding round optical components.

3. The connection of elastic press

The elastic press connection is removable. The spring card ring is usually only used for optical components that are not high in alignment and solidity. Such as protecting glass and filter glass, the elastic press is used to press the larger optical components.

4. The connection of electroplating, which belongs to the unbroken connection, is used electroplating method to plate copper in the end of the frame, blocking the optical components. The optical components in the electroplating connection are not compressive, only for the connection of small diameter optical components.

5. The connection of cementing

When the copper plated connection is converted to the bonding agent, it becomes the glue joint. There is also no compaction on the optical components.

Three he connection of non-circular optical componentsNon-circular optical components include prisms, reflectors, glass and protective glass. The structural design requirements for non-circular optical components are essentially the same as the circular optical components.

Four he basic principle of the connecting structure in the instrument:

Hyperion Optics

introduces the basic principle of connecting structure in the instrument:聽

1 o ensure the strength and accuracy of the instrument

2 o ensure the reliability of the components under use;

3 n order to simplify the structure, it should be possible to use an undetachable connection

4 omponents that need to be adjusted, repaired and replaced should be detachable

5 hen there is a number of connections in the part, it is usually necessary to have an undetachable connection for the components or the internal components that are first assembled: the components or the external components that are attached are disassembled

6 nsure that the components and connections of first and later assembly will not affect each other.

7 nsure that the components are not deformed or are the least deformed

8) Fewer specifications are better to use connections, don use the fine thread connections as possible.

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