Circular Optical Windows

An anti-reflective (AR) coated window is an optical window that has been specially treated to reduce the amount of light reflection that occurs on its surface. These windows are used in a variety of fields, including aerospace, automotive, and medical applications, where clear and accurate... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 1800

• Wedged or Parallel?: Parallel
• Windows Features: Anti-Reflection Coating

N-BK7 is one of the most common glasses used to produce high-quality optical components, especially for the visible spectrum. It contains very few inclusions and is almost free of bubbles. It is a relatively hard material and has uniform transmission through-out the visible and near infrared spectra... [See More]

• Window Shape: Circular; Square; Rectangular
• Window Diameter, Side Length, or Rectangular Length: 10 to 50.8

• Window Type: Plane
• Thickness: 1 to 5

Optical domes, also known as hemispheric optical windows, play a crucial role in transmitting light while providing a protective boundary between two systems or environments. These specialized optical components are commonly used to safeguard fragile optical systems in demanding applications. For... [See More]

• Window Shape: Circular

• Window Material: Germanium (optional feature); Sapphire (optional feature); Zinc Selenide (optional feature); BK7 Fused Silica, MgF2 Ceramic

Standard Mirrors and Windows for Blue Ray Laser Disc Applications, Select either UVFS or Sapphire 12.5mm and 25mm substrates [See More]

• Window Shape: Circular
• Thickness: 6.35

• Window Diameter, Side Length, or Rectangular Length: 12.5 to 25
• Wavelength Range: 405

• Most sizes ? /20 transmitted wavefront, 10-5 surface quality; • All kinds of coatings are available; • Custom designs for other sizes and coatings are also available upon request. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 8

• Window Type: Brewster
• Thickness: 2

CRYSTECH is dedicated to manufacturing high precision windows for solid-state laser systems. We have over 20 years of experience in windows manufacturing, design, and coating. We offer a wide range of windows with different materials and different wavelengths. CRYSTECH own the top coating expert... [See More]

• Window Shape: Circular; Square; Rectangular
• Windows Features: No Coating

• Window Material: BK7 Glass; Calcium Fluoride; UV Grade Fused Silica; MgF 2, CaF 2
• Surface Quality: 20-10 Scratch / Dig

Sapphire is an excellent material for windows and substrates requiring transmittance from UV to 6.0 microns. It is a tough, scratch resistant material that is excellent for abusive applications. It is available with AR coatings to improve its already excellent transmittance properties. Transmission... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: ? to 160

• Window Type: Plane
• Thickness: 0.3000 to 10

Introducing our latest innovation in precision engineering - Chrome Plated Precision Slit Plate. This cutting-edge product is engineered and photolithographically engraved to meet the needs of the most complex applications, with impressive 2 µm accuracy. Chrome plated precision slit plates are... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 1800

• Wedged or Parallel?: Parallel
• Window Material: B270i

Please contact GPI to request more information regarding customized parts. [See More]

• Window Shape: Circular
• Thickness: 3

• Window Diameter, Side Length, or Rectangular Length: 12.5 to 25
• Wavelength Range: 266 to 1064

• Most sizes with ? /20 transmitted wavefront and 10-5 surface quality are available; • All kinds of coatings are available; • Custom designs for other sizes and coatings are also available upon request. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.7

• Window Type: Plane
• Thickness: 3.18

The Illuminated Reticle is a scope reticle with a built-in illumination source for better visibility in low light conditions. Lighting can be in the form of LED lights or fiber optic technology, and the brightness level can be adjusted for different lighting conditions. The main advantage of the... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 0.0833

• Wedged or Parallel?: Parallel
• Window Material: B270 / N-BK7/ H-K9L / H-K51

Precision Long Slit Aperture Glass Plate is a thin piece of flat glass with a long, narrow slit cut into it. The slits are precise and narrow, typically only a few microns wide, and are used to control the flow of light in the optical system. Glass plates with long slit apertures are commonly used... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 0.0833

• Wedged or Parallel?: Parallel
• Window Material: B270

The chrome reticle is a scope reticle that has a reflective coating on the reticle surface. This enhances reticle visibility, especially in low light conditions, by bouncing light off the reticle surface back into the shooter's eyes. The chrome finish has a mirror-like finish that helps make the... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 0.5000

• Wedged or Parallel?: Parallel
• Window Material: B270 /N-BK7 / H-K9L

A wedge window or a wedge prism is a type of optical component used in various applications such as beam splitting, imaging, spectroscopy, and laser systems. These components are made from a block of glass or other transparent material with a wedge shape, which means that one end of the component is... [See More]

• Window Shape: Circular
• Window Material: CDGM / SCHOTT

• Wedged or Parallel?: Wedged
• Surface Quality: 40-20 Scratch / Dig

Stage micrometers, calibration rulers, and grids are commonly used in microscopy and other imaging applications to provide standard reference scales for measurement and calibration. These devices are typically placed directly on the microscope stage and are used to characterize the magnification and... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 0.0833

• Wedged or Parallel?: Parallel
• Window Material: B270

Optical windows are made of optical grade glass with plane parallel surfaces. They are used to admit light into an optical system and to protect it from dirt and moisture. Windows made of BK7 material have high transmission in the visible spectral region, do not scratch easily, do not degrade under... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.5

• Window Type: Plane
• Thickness: 6

Barium fluoride is used for optical windows, prisms and lenses transmitting from ultraviolet into infrared, it can be used as an infrared laser window or lens. BaF2 is recommended for use as a vacuum ultraviolet window where high radiation resistance is required. BaF2 is less soluble than LiF, but... [See More]

• Window Shape: Circular
• Thickness: 1 to 10

• Window Diameter, Side Length, or Rectangular Length: 12 to 70
• Window Material: BaF2

API's innovative polarized aircraft window elements outperform all other sunlight control systems. Using the scientific principles of polarization instead of ordinary blinds and shades, ECLIPSE polarized window elements provide full cabin window control of sunlight from bright to near opaque and... [See More]

• Window Shape: Circular
• Window Material: Polarized Window

• Window Type: Plane

Calcium fluoride has a high transmittance from ultraviolet to mid-infrared (250nm~7um), so it is widely used in the manufacture of prisms, Windows and lenses, In some applications with a wide spectrum range, it can be used directly without coating film, Especially, it has low absorption and high... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 10 to 127

• Window Type: Brewster
• Window Material: JGS1

Substrate Material: UV fused silica, BK7. Clear Aperture: larger than central 85% of diameter. Surface Quality: 10-5 Scratch-Dig. Surface Flatness: λ/10 @633nm over clear aperture. Diameter tolerance: +0.000/-0.010" (+0.00/-0.25mm). Thickness tolerance: ±0.010" ( ±0.25mm). [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.7 to 203

• Window Type: Plane
• Thickness: 6.35 to 25.4

Calcium Fluoride is extremely transparent over a wide spectrum from deep UV(135nm) to far IR(9.4um), which makes it ideal for windows in very short wavelength excimer lasers. The crystal has very low refraction coatings. It is slightly soluble in water. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.7 to 38.1

• Window Type: Plane
• Thickness: 3 to 4

At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 6 to 16

• Window Type: Brewster
• Thickness: 1 to 2

Features: • Exceptional mechanical strength and chemical resistance. • High thermal durabilities and broad wavelength range from 200-5500nm. • Ideal for harsh conditions and high-power applications (e.g lasers, plasma chambers, pharmaceuticals, etc.). • A large selection of... [See More]

• Window Shape: Circular; Square
• Thickness: 1

• Rectangular Width: 12.5
• Window Material: Sapphire; Optical grade single crystal sapphire

Besides standard windows, Foctek offers all kinds of custom-made windows according to customers ’ requirement: Windows made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Silicon, Borofloat, Pyrex, or other optical glass supplied by Schott and Chinese CDGM are available upon... [See More]

• Window Shape: Circular
• Thickness: 1 to 50

• Window Diameter, Side Length, or Rectangular Length: 8 to 30
• Window Material: Borofloat

FTIR transmission windows - round,square,drilled, and customized Transmission spectroscopy is one of the basic techniques for IR analysis. The sample and wavelength to be analyzed determine the choice of window material, path length and window arrangement. [See More]

• Window Shape: Circular; Square; Rectangular

• Window Material: Calcium Fluoride; Germanium; Sapphire; Zinc Selenide; KBr, ZnS, Silicon, BaF2, LiF, Fused Quartz, MgF2, SiO2

Round Sapphire Windows are excellent at protecting delicate lasers, sensors, cameras, and other devices due to their superior strength and scratch resistance. Sapphire windows can also be used as viewports in high pressure or vacuum situations. Sapphire pressure windows can be made much thinner than... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 3 to 300

• Window Type: Plane
• Thickness: 0.2000 to 50

Discounts up to 80% Off. Quantities Extremely Limited. Final Sale, No Returns. Shop the EO Mega Clearance presentations for the hottest deals on component-level products. Quickly browse the best optics, imaging, and photonics deals you will ever see. Quantities are extremely limited and are sold on... [See More]

• Window Shape: Circular

• Window Type: Plane

BK7 window is the most common type of window. It has good performance over visible and near infrared wavelength regions. At the same time, BK7 window is ideal for applications require minimal transmitted beam deviation. It is suitable for AR coating. [See More]

• Window Shape: Circular
• Wedged or Parallel?: Parallel

• Window Diameter, Side Length, or Rectangular Length: 2 to 350
• Window Material: BK7 Glass

B270 or equivalent windows are cost-effective medium performance windows. B270 or equivalent glass works efficiently from 320nm though to 2600nm with an average transmission of 90% from 400nm to 2000nm. B270 or equivalent glass is a sheet material that is relatively flat. It comes as manageable... [See More]

• Window Shape: Circular

• Window Diameter, Side Length, or Rectangular Length: 91.5

Optical Windows are often used to create a physical barrier between two different environments – preventing two gases from mixing together, separating liquids from the air, keeping a sealed system in a vacuum. In many optical systems, a window is used to protect more expensive optical... [See More]

• Window Shape: Circular; Square; Rectangular
• Wedged or Parallel?: Parallel (optional feature); Wedged (optional feature)

• Window Type: Plane; Brewster
• Window Material: BK7 Glass; Calcium Fluoride; Germanium; Sapphire; UV Grade Fused Silica; Zinc Selenide; VUV MgF2; SUPRASIL 1; Silicon; Zinc Sulfide

MIL-0-13830 optical windows from Qnnect, formerly Hermetic Solutions Group can be produced in almost any size or shape - round, square, or rectangular- to meet specific requirements. Glass material and shell material combinations include: borosilicate/Kovar F-15; soda lime/stainless steel alloy,... [See More]

• Window Shape: Circular

• Window Material: Sapphire; Borosilicate, Soda Lime, 8337 Borosilicate

AP3 Ultra-thin Polymer X-ray Windows are the highest performing x-ray windows available for low energy x-ray analysis. AP3 windows are ideal for applications that require high x-ray transmission of light element energies, high mechanical strength, light rejection, vacuum tightness, and reliability. [See More]

• Window Shape: Circular
• Window Material: Plastic / Polymer

• Window Type: Plane
• Coating Material: DuraCoat® Corrosion Resistance, Al

Brewster Windows are windows designed for use at Brewster's angle (usually uncoated). This is the angle where only incident p-polarized light has 0% transmission loss. They are an economical option for coupling linearly polarized light into sealed optical systems and to select the polarization of... [See More]

• Window Shape: Circular
• Wedged or Parallel?: Wedged

• Window Type: Brewster
• Parallelism or Wedge Angle: 0.1667 to 5

Optical windows are used to separate two different environments while still allowing light to pass through. Advanced Optics manufactures optical windows made of low expansion borosilicate glass and fused silica up to 8 inches in diameter to meet various demanding applications. Surface flatness of... [See More]

• Window Shape: Circular; Square (optional feature); Rectangular (optional feature)
• Window Diameter, Side Length, or Rectangular Length: 25.4 to 203

• Window Type: Plane
• Thickness: 12.7 to 33.8

Our BK7 windows are available with a high parallelism of 10 arc seconds, ideal for applications requiring minimal transmitted beam deviation. [See More]

• Window Shape: Circular
• Thickness: 2 to 10

• Window Diameter, Side Length, or Rectangular Length: 5 to 50
• Window Material: BK7 Glass

Plane plates made of optical grade sapphire without visible inclusions, bubbles, strias and colorations. Orientation: (0001) c-plane. Available unmounted and mounted. Mounted versions fit to Nanobench or Microbench. Total Wavefront Distortion: λ/8. Parallelism: ≤ 5 arcmin. Clear Aperture:... [See More]

• Window Shape: Circular; Rectangular (optional feature)
• Window Diameter, Side Length, or Rectangular Length: 6 to 130

• Window Type: Plane
• Rectangular Width: 6 to 20

Our extensive stock list includes a wide range of diameters and thicknesses. They have standard S/D 80/50 or better and random orientation. We also offer our expertise in developing precision customized sapphire windows manufactured to your project ’s specifications, including orientations,... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 15 to 74.98

• Window Type: Plane
• Thickness: 0.0864 to 19.06

Calcium fluoride windows have a wide transmission range and can be used in ultraviolet, visible and infrared applications. Due to its composition CaF2 (Calcium Fluoride) has much longer useful life than most materials when used in a fluorine environment. Calcium Fluoride (CaF2) mirrors, prisms,... [See More]

• Window Shape: Circular
• Thickness: 1 to 10

• Window Diameter, Side Length, or Rectangular Length: 12 to 70
• Window Material: Calcium Fluoride

Optical dome is a lens with two concentric sphere, They are mainly used for Bathyscaphe, Radiometer, Underwater Robot, Submarine.,Camera Image. In an ideal dome, the convex radius equals the sum of the dome thickness and the concave radius, resulting in a naturally strong shape that becomes harder... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

Fused silica is an ideal material for UV application and is transparent from 220nm to 4.0um. it is characterized by excellent chemical and radiation resistance, low coefficient of thermal expansion, low fluorescence, and resistance to scratch. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.7 to 50

• Window Type: Plane
• Thickness: 2 to 5

At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the... [See More]

• Window Shape: Circular; Rectangular
• Window Diameter, Side Length, or Rectangular Length: 12.7 to 50.8

• Window Type: Plane
• Thickness: 1 to 12

Features: • Exceptional mechanical strength and chemical resistance. • High thermal durabilities and broad wavelength range from 200-5500nm. • Ideal for harsh conditions and high-power applications (e.g lasers, plasma chambers, pharmaceuticals, etc.). • A large selection of... [See More]

• Window Shape: Circular
• Thickness: 0.5000

• Window Diameter, Side Length, or Rectangular Length: 10
• Window Material: Sapphire; Optical grade single crystal sapphire

Besides standard windows, Foctek offers all kinds of custom-made windows according to customers ’ requirement: Windows made from materials such as N-BK7, Fused Silica, Sapphire, CaF2, Silicon, Borofloat, Pyrex, or other optical glass supplied by Schott and Chinese CDGM are available upon... [See More]

• Window Shape: Circular
• Thickness: 1 to 20

• Window Diameter, Side Length, or Rectangular Length: 8 to 30
• Window Material: Silicon

Intrinsic have very strong ability for the optical windows, we have three fabrication technique of pitch polishing, double side polishing and contact polishing to supply windows size from 1.2mm to 350mm with thickness from 0.12mm to 60mm, and the shape can be round, square, drilled, step, and... [See More]

• Window Shape: Circular; Square; Rectangular

• Window Material: BK7 Glass; Calcium Fluoride; Germanium; Sapphire; UV Grade Fused Silica; Zinc Selenide; ZnS, Silicon, BaF2, MgF2

Tapered sapphire windows, or plugs, are excellent for high pressure applications. We provide the precise dimensions you require to match your intended housing with near perfect accuracy. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 3 to 200

• Window Type: Plane
• Thickness: 5 to 50

Color glass changed the spectral properties of optical radiation. They therefore allow scientific experiments and industrial applications where that change is necessary. You can combine color glass filters together to change the bandpass or to increase the attenuation. [See More]

• Window Shape: Circular
• Window Material: Crown Glass

• Wedged or Parallel?: Parallel
• Windows Features: Anti-Reflection Coating

These BBAR coated B270 telecom windows are coated for use in the 1050-1700nm region. Our coating achieves less than 0.5% reflection in the telecoms band and 0.09% reflection at 1550nm. These windows are optimized for fibre optic applications in the S and C bands between 1460nm to 1565nm while... [See More]

• Window Shape: Circular
• Rectangular Width: 0.2500

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

DuraBeryllium windows are composed of high purity beryllium and a thin layer of DuraCoat ®. DuraCoat is a low-Z material that when applied to beryllium creates a hermetic, corrosion resistant window that is used for ultra-high vacuum applications (leak tight is better than 3x10-10 mbar L/sec of... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 9.2 to 16

• Window Type: Plane
• Thickness: 0.0080 to 0.2500

Brewster Windows are primarily used in laser cavities to produce a beam with a high degree of polarization purity. When unpolarized light is incident on an uncoated substrate at Brewster ’s Angle, the reflected portion is completely S polarized and the transmitted portion is partially P... [See More]

• Window Shape: Circular
• Wedged or Parallel?: Wedged

• Window Type: Brewster
• Parallelism or Wedge Angle: 3

We offer two substrate materials, spanning a range of thermal expansion coefficients. For applications in which thermal shock is absent and thermal stability is not critical, BK7 glass is a suitable and inexpensive material. For applications requiring high thermal stability or involving severe... [See More]

• Window Shape: Circular
• Thickness: 3 to 10

• Window Diameter, Side Length, or Rectangular Length: 12.7 to 50.8
• Window Material: BK7 Glass; UV Grade Fused Silica

The high-precision window is made of BK7 optical glass and UV fused quartz, the fused silica quartz window plate is suitable for high power laser that needs good thermal stability, and the window made of N-BK7 material is cheaper, which is suitable for laser applications that pay more attention to... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

Sapphire is transparent from 170nm to 5.3um. possessing high strength, hardness and chemical stability, it is excellent material for severs environments. Being five times stronger than glass and heat resistant up to 2000 °C, sapphire is often employed as pressure windows. [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 12.7 to 25.4

• Window Type: Plane
• Thickness: 1

At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 25.4 to 38.1

• Window Type: Plane
• Thickness: 4.04 to 5.15

Features: • Exceptional mechanical strength and chemical resistance. • High thermal durabilities and broad wavelength range from 200-5500nm. • Ideal for harsh conditions and high-power applications (e.g lasers, plasma chambers, pharmaceuticals, etc.). • A large selection of... [See More]

• Window Shape: Circular
• Thickness: 2

• Window Diameter, Side Length, or Rectangular Length: 12.7
• Window Material: Sapphire; Optical grade single crystal sapphire

Witness samples Witness samples allow testing without handling the actual part, to ensure the coating process is accurate before moving forward with the optical component. And after coating, the witness samples are often used to measure reflectivity, transmission, and polarization, as well as... [See More]

• Window Shape: Circular
• Thickness: 1 to 2

• Window Diameter, Side Length, or Rectangular Length: 25 to 25.4
• Surface Quality: 80-50to 20-10

Sapphire window retains its high strength at high temperatures, has good thermal properties and excellent transparency. It is chemically resistant to common acids and alkali at temperatures up to 1000 °C as well as to HF below 300 °C. These properties encourage its wide use in hostile... [See More]

• Window Shape: Circular
• Window Material: Sapphire

• Wedged or Parallel?: Parallel
• Windows Features: Anti-Reflection Coating

Barium Fluoride (BaF ₂) is a crystalline compound of barium and fluoride used in optical applications in the NIR, VIS and MWIR spectrums. Barium Fluoride is resistant to high energy radiation, performing well in dry temperatures up to 800 °C, but transmission in the Vacuum UV (VUV)... [See More]

• Window Shape: Circular
• Window Material: Barium Fluoride

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

Large Wedge Windows greatly reduce or eliminate interference effects caused by multiple reflections between front and rear surfaces of Plane Windows. They are well suited for use as substrates for laser output couplers in which the reflection from the second surface must be completely eliminated... [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 5

• Wedged or Parallel?: Wedged
• Window Material: BK7 Glass; UV Grade Fused Silica

Elliptical flat mirrors bend light at precise angles with minimum wave distortion due to elongated major axis. Precision 45 degree elliptical flat mirrors are ideal for technical and astronomical applications. Bend light at precise angles with minimum wave distortion [See More]

• Window Shape: Circular
• Thickness: 3 to 4

• Window Diameter, Side Length, or Rectangular Length: 25 to 42.5
• Window Material: BK7 Glass; UV Grade Fused Silica

Optical Mirrors are used for beam turning, interferometry, imaging, or illumination.Using polished glass or metal as the substrate, the light beam hits the surface to form mirror reflection.In order to obtain as much reflected light as possible, the substrate is often coated with a reflective... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

At Thorlabs, we constantly reinforce our desire to serve at the pleasure of our customers. From this comes our desire to be connected to our industry in a way that far exceeds what would typically be expected of a vendor. Thorlabs lives this core principle by seeking to enhance, at every turn, the... [See More]

• Window Shape: Circular
• Window Diameter, Side Length, or Rectangular Length: 25.4

• Window Type: Plane
• Thickness: 5

Features: • Stocked and custom Germanium (Ge) windows available. • Maximum diameter 300mm. • Broad wavelength range covering 2000-16000nm, excellent for IR applications. • Coating options: DLC coating, AR@3-5 μm, AR@8-12 μm, BBAR@3-12 μm. Germanium Windows are... [See More]

• Window Shape: Circular
• Thickness: 0.0500 to 4

• Window Diameter, Side Length, or Rectangular Length: 100
• Parallelism or Wedge Angle: 1

1 、What are laser windows?. Laser Protect Windows(Laser protective glass, protective filters or welding protective windows) are used to save for the high cost of laser optics. 2 、What are laser windows used for?. These windows are normally used in applications like laser cutting, laser... [See More]

• Window Shape: Circular
• Wedged or Parallel?: Parallel

• Window Diameter, Side Length, or Rectangular Length: 4 to 80
• Window Material: BK7 Glass; UV Grade Fused Silica; Zinc Selenide

These precision grade BK7 or equivalent windows are used to seal optical enclosures especially suited to low power laser applications. Our stock range of ¼ wave BK7 or equivalent windows are uncoated and also AR coated both faces with extended BBAR for visible and NIR applications (450-900nm)... [See More]

• Window Shape: Circular
• Rectangular Width: 0.1000

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 40-20 Scratch / Dig

Parallel Windows are similar to Plane Windows, but with parallel surfaces. These windows are well suited for applications in which angular deviation of the transmitted beam must be kept as small as possible. Misalignment errors are also minimized when the window is repeatedly inserted and removed. [See More]

• Window Shape: Circular
• Parallelism or Wedge Angle: 5

• Wedged or Parallel?: Wedged
• Window Material: BK7 Glass; Calcium Fluoride; Germanium; Sapphire; UV Grade Fused Silica; Zinc Selenide; FS, IR grade CaF2, MgF2, BaF2, ZnS, Si, Cleartran, Chalcogenide glass, Sapphire

The usage of flat windows allows optical radiation to pass from one environment to another, without mixing other components of these environments. Considerations in selecting windows may include transmission, scattering, wavefront distortion and resistance to certain environments. The ideal window... [See More]

• Window Shape: Circular
• Thickness: 2 to 6.3

• Window Diameter, Side Length, or Rectangular Length: 12.5 to 75
• Window Material: BK7 Glass; UV Grade Fused Silica

Sapphire are ideal for demanding applications such as laser systems because of their extremely high surface hardness, high thermal conductivity, high dielectric constant and resistance to chemical acids and bases.Because the hardness of sapphire is second only to diamond, and its structural strength... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

Features: • Stocked and custom Germanium (Ge) windows available. • Maximum diameter 300mm. • Broad wavelength range covering 2000-16000nm, excellent for IR applications. • Coating options: DLC coating, AR@3-5 μm, AR@8-12 μm, BBAR@3-12 μm. Germanium Windows are... [See More]

• Window Shape: Circular
• Thickness: 0.0500 to 1

• Window Diameter, Side Length, or Rectangular Length: 102
• Parallelism or Wedge Angle: 1

Calcium Fluoride windows and lenses for UV and IR spectrum. Custom made CaF2 windows, CaF2 lenses and wedges according to customer's specifications. CaF2 windows up to 220mm diameter; CaF2 wedges, prisms and CaF2 mirrors; Excimer CaF2 optics, Raman grade CaF2 optics and etc. [See More]

• Window Shape: Circular
• Wedged or Parallel?: Parallel

• Window Diameter, Side Length, or Rectangular Length: 4 to 38.1
• Window Material: Calcium Fluoride

We offer two grades of stock borosilicate or equivalent windows. Our standard windows are cut from float sheet material and our polished grade is then further polished to better flatness and surface quality. These borosilicate or equivalent windows listed here are made from low expansion... [See More]

• Window Shape: Circular
• Rectangular Width: 100

• Window Diameter, Side Length, or Rectangular Length: 0.2000

Plane Windows are used as substrates for a variety of applications, such as laser windows, output couplers, beamsplitters, beam combiners, mirrors, dichroic filters and plate polarizers. Considerations in selecting window substrates include transmission range, absorption coefficient, incident laser... [See More]

• Window Shape: Circular
• Wedged or Parallel?: Wedged

• Window Type: Plane
• Parallelism or Wedge Angle: 3

Optical flats are used for testing and evaluating other optical elements. An interference pattern is formed in the air between the flat and the object being evaluated, and this pattern is usually more seen through the flat than through the object. The pattern consists of alternating bright and dark... [See More]

• Window Shape: Circular
• Thickness: 8 to 10

• Window Diameter, Side Length, or Rectangular Length: 25 to 40
• Surface Flatness: λ/20

Calcium fluoride has a high transmittance from ultraviolet to mid-infrared (250nm~7um), so it is widely used in the manufacture of prisms, Windows and lenses, In some applications with a wide spectrum range, it can be used directly without coating film, Especially, it has low absorption and high... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 1 to 1000
• Windows Features: Anti-Reflection Coating

Features: • Stocked and custom Germanium (Ge) windows available. • Maximum diameter 300mm. • Broad wavelength range covering 2000-16000nm, excellent for IR applications. • Coating options: DLC coating, AR@3-5 μm, AR@8-12 μm, BBAR@3-12 μm. Germanium Windows are... [See More]

• Window Shape: Circular
• Thickness: 0.0500 to 4

• Window Diameter, Side Length, or Rectangular Length: 102
• Parallelism or Wedge Angle: 1

Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8 –12 um wavelength band. [See More]

• Window Shape: Circular
• Wavelength Range: 8000 to 12000

• Wedged or Parallel?: Parallel
• Window Material: Germanium

Calcium Fluoride (CaF ₂) is commonly used for optics looking at the IR and UV spectrums and has a very low change in refractive index with wavelength. It shares similar optical properties with Barium Fluoride although it has a transmission that is 2.5 µm less into the infra-red. Calcium... [See More]

• Window Shape: Circular
• Rectangular Width: 19

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

The windows are designed to be used in precision optical systems. The optical transmission is high with little distortion of transmitted signal. λ/10 transmitted wavefront distorsion is usually preferred but λ/4 is offered as an option when this is not an issue. Windows can be... [See More]

• Window Shape: Circular
• Thickness: 1 to 3

• Window Diameter, Side Length, or Rectangular Length: 12.7 to 50.8
• Window Material: UV Grade Fused Silica

Optical Mirrors are used for beam turning, interferometry, imaging, or illumination.Using polished glass or metal as the substrate, the light beam hits the surface to form mirror reflection.In order to obtain as much reflected light as possible, the substrate is often coated with a reflective... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 0.1000 to 1000
• Windows Features: Anti-Reflection Coating

Features: • Stocked and custom Germanium (Ge) windows available. • Maximum diameter 300mm. • Broad wavelength range covering 2000-16000nm, excellent for IR applications. • Coating options: DLC coating, AR@3-5 μm, AR@8-12 μm, BBAR@3-12 μm. Germanium Windows are... [See More]

• Window Shape: Circular
• Thickness: 0.0500 to 1

• Window Diameter, Side Length, or Rectangular Length: 25.4
• Parallelism or Wedge Angle: 1

Zinc Selenide (ZnSe) Windows are ideal for a wide variety of infrared applications including thermal imaging, FLIR, and medical systems. This chemically vapor deposited material has wide usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal... [See More]

• Window Shape: Circular
• Window Material: Zinc Selenide

• Wedged or Parallel?: Parallel

Quartz material is stronger than glass, can be used at temperatures up to 1050 °C and has a high average transmission of over 80% from 260nm to 2500nm. Quartz windows are useful for most UV applications other than fluorescence applications as quartz windows fluoresce. Quartz windows are also... [See More]

• Window Shape: Circular
• Surface Quality: 40-20 Scratch / Dig

• Window Diameter, Side Length, or Rectangular Length: 15

Zinc selenide (ZnSe) is the most popular material for infrared applications. Due to a very wide transmission range covering 0.6-22 µm chemical vapor deposition grown ZnSe as a high optical quality material is used to manufacture optical components (windows, mirrors, lenses) for high power IR... [See More]

• Window Shape: Circular
• Thickness: 2 to 6.4

• Window Diameter, Side Length, or Rectangular Length: 12.7 to 76.2
• Window Material: Zinc Selenide

Optical Mirrors are used for beam turning, interferometry, imaging, or illumination.Using polished glass or metal as the substrate, the light beam hits the surface to form mirror reflection.In order to obtain as much reflected light as possible, the substrate is often coated with a reflective... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

Features: • Exceptional mechanical strength and chemical resistance. • High thermal durabilities and broad wavelength range from 200-5500nm. • Ideal for harsh conditions and high-power applications (e.g lasers, plasma chambers, pharmaceuticals, etc.). • A large selection of... [See More]

• Window Shape: Circular; Square
• Window Material: Sapphire; Optical grade single crystal sapphire

• Thickness: 0.5000 to 3.18
• Surface Quality: 40-20 Scratch / Dig; 60-40 Scratch / Dig; 60/40 S/D (Normal), or 40/20 S/D

Magnesium Fluoride Windows applicable for wide range spectrum, transmits well into the VUV region at the hydrogen Lyman-alpha line and beyond and it is particularly useful for Excimer laser application.It is resistant to mechanical and thermal shock, to radiation, and is chemically stable. [See More]

• Window Shape: Circular
• Wedged or Parallel?: Parallel

• Window Diameter, Side Length, or Rectangular Length: 10 to 38.1
• Window Material: Magnesium Fluoride

Germanium (Ge) is a relatively hard, high-density, IR transmitting material that blocks UV and VIS wavelengths but allows IR from 2 µm. Germanium has the highest refractive index of commonly available IR-transmitters and has low optical dispersion. This makes it desirable in aspects of lens... [See More]

• Window Shape: Circular
• Window Material: Germanium

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

Sapphire Windows are ideal for demanding applications such as laser systems because of their extremely high surface hardness, high thermal conductivity, high dielectric constant and resistance to chemical acids and bases.Because the hardness of sapphire is second only to diamond, and its structural... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 2 to 800
• Windows Features: Anti-Reflection Coating

Fused silica window, with low thermal expansion, providing stability and resistance to thermal shock over large temperature excursions, wide thermal operating range and high laser damage threshold, is a better choice for transmission from UV to IR. [See More]

• Window Shape: Circular
• Wedged or Parallel?: Parallel

• Window Diameter, Side Length, or Rectangular Length: 2 to 350
• Window Material: UV Grade Fused Silica

Potassium Bromide (KBr) is a crystalline compound of potassium and bromide with a rock-salt type structure. It is used in optical applications in the UV, Visible, MWIR, and LWIR waveband regions. KBr has a melting point of 730 °C and must be used in a moisture-free environment as the polished... [See More]

• Window Shape: Circular
• Rectangular Width: 23

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Window Material: Potassium Bromide

Calcium fluoride has a high transmittance from ultraviolet to mid-infrared (250nm~7um), so it is widely used in the manufacture of prisms, Windows and lenses, In some applications with a wide spectrum range, it can be used directly without coating film, Especially, it has low absorption and high... [See More]

• Window Shape: Circular
• Window Material: BK7 Glass; Sapphire; UV Grade Fused Silica; Bk7 sapphire fused silica,ZnS2,CaF2,Si,Ge.

• Window Diameter, Side Length, or Rectangular Length: 1 to 1000
• Windows Features: Anti-Reflection Coating

Sapphire (Al2O3) is one of the hardest minerals and optical materials available for use in the range from UV up to about 5 µm. Sapphire is birefringent and if its use is for critical optical application, for example, windows, then the crystal might have to be cut along the zero degree plane, or... [See More]

• Window Shape: Circular
• Rectangular Width: 0.1000

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

Sapphire (Al2O3) is one of the hardest minerals and optical materials available for use in the range from UV up to 5 µm. Sapphire is birefringent and if its use is for critical optical application then the crystal might have to be cut along the zero degree plane, or C-Cut. Random cut is usually... [See More]

• Window Shape: Circular
• Rectangular Width: 0.1000

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

Silicon (Si) is one of the hardest minerals and optical materials available for use in the NIR (1 µm) to about 6 µm. Optical quality Silicon is usually doped (5 to 40 ohm cm) to prevent absorption bands within the transmission waveband. Silicon has a lower refractive index than germanium... [See More]

• Window Shape: Circular
• Window Material: Silicon

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 60-40 Scratch / Dig

Sodium Chloride (NaCl), commonly known as rock salt, is a soft, highly soluble and hydroscopic material. It transmits over a broad wavelength range of about 0.25 to 16 μm and is ideal for lenses and other optical components for use the UV and IR range. Sodium Chloride has a maximum operating... [See More]

• Window Shape: Circular
• Rectangular Width: 23

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Window Material: Sodium Chloride

Knight Optical's stock range of UV fused silica windows are made from Corning 7980 grade 2G or equivilent of Spectrosil B. UV grade fused silica windows have excellent UV transmission working efficiently at 175nm. Making them ideal for spectroscopic instruments in the UV. These UV fused silica... [See More]

• Window Shape: Circular
• Rectangular Width: 0.2000

• Window Diameter, Side Length, or Rectangular Length: 0.2000
• Surface Quality: 40-20 Scratch / Dig

Zinc Selenide is used in the form of optical windows in FLIR (Forward Looking Infrared) systems, as meniscus, spherical or cylindrical lenses and as resonator windows in CO2 lasers. Knight Optical supply a range of quality Zinc Selenide windows either from stock or custom made to your specification. [See More]

• Window Shape: Circular
• Surface Quality: 60-40 Scratch / Dig

• Window Diameter, Side Length, or Rectangular Length: 0.2000