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Flat Windows

Custom Windows for CO2 Lasers
Changchun Sunday Optics Co., ltd
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Custom Windows for CO2 Lasers
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Changchun Sunday Optics Co., Ltd. presents precision-engineered CO2 laser optic windows, designed to meet the highest standards of performance. These windows range in diameter from 5mm to 250mm with thicknesses between 0.5mm and 40mm. Crafted from top-quality ZnSe sourced from the USA and China, these optics feature a surface quality ...

Specifications
Substrate Material: ZnSe
Antireflection Coating: Coated
Diameter: 300 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/10
...
Data Sheet
BK7 Optical Window with Large Incidence Angle Antireflection Coating
Fuzhou HCT Optics Co.,LTD
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BK7 Optical Window with Large Incidence Angle Antireflection Coating
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Optical windows are often used in optical instruments, such as telescopes, microscopes, lasers, spectrometers, etc. They act as windows in the optical path to protect the interior of the optical system from the external environment and allow light to enter or leave the system.

Specifications
Substrate Material: N-BK7
Antireflection Coating: Coated
Diameter: 15 mm
Surface Quality: 20-10 scratch-dig
Surface Flatness: lambda/4
...
Data Sheet
Optical Sapphire Window with AR Coating
MOK Optics Co LTD
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Optical Sapphire Window with AR Coating
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Sapphire (Al2O3) is a highly versatile material renowned for its exceptional properties. It possesses a high surface hardness, excellent temperature resistance, good thermal conductivity, and impressive UV-IR transmittance. Additionally, sapphire exhibits remarkable chemical stability. These characteristics make sapphire an ideal ...

Specifications
Substrate Material: Sapphire
Antireflection Coating: Coated
Diameter: 2-200 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig, 80-50 scratch-dig
Surface Flatness: lambda/4, lambda/2, 1 lambda
...
Data Sheet
CaF2 BaF2 MgF2 BK7 Fused silica Ge Si ZnSe ZnS Protective Window
Henan UM Optics Ltd
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CaF2 BaF2 MgF2 BK7 Fused silica Ge Si ZnSe ZnS Protective Window
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Windows are optical glass that have been ground and polished to form two surfaces parallel to each other. They are commonly used as protective devices for electronic sensors, optical lenses, and laser devices. Windows do not change the magnification of the system. The window piece does not change the magnification of the system. ...

Specifications
Substrate Material: N-BK7, Fused Silica, UV Grade Fused Silica, IR Grade Fused Silica, Sapphire, Ge, ZnSe, ZnS, CaF2, IR Grade CaF2, MgF2, BaF2, Si
Antireflection Coating:
Diameter: 6-100 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig, 80-50 scratch-dig
Surface Flatness: lambda/20, lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda, Lambda/40, Other
...
Data Sheet
High-Precision Sapphire Substrates for LED Packaging and Micro Machining
Walthy Precision Co., Ltd.
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High-Precision Sapphire Substrates for LED Packaging and Micro Machining
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Our sapphire substrates are designed for high-end applications that demand exceptional durability, optical clarity, and thermal stability. Utilizing advanced micro-machining techniques, we offer substrates in various shapes and sizes, tailored to meet the precise needs of our customers. From LED packaging to scientific research, our ...

Specifications
Substrate Material: Sapphire
Antireflection Coating: Uncoated
Diameter: 0.01 mm
Surface Quality: Not Specified
Surface Flatness: Other
...
Data Sheet
Industrial Sapphire Windows
Sapphcom Sapphire Competence
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Industrial Sapphire Windows
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Sapphcom Sapphire Competence offers a wide range of industrial sapphire products and services. We specialize in offering sapphire optics products (windows, lenses, prisms) and customized parts and prototypes. We also offer consulting to help customers implement sapphire in their specific applications. 

Specifications
Substrate Material: Sapphire
Antireflection Coating: Coated, Uncoated
Diameter: up to 350 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig, 80-50 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
Data Sheet
UV Narrowband AR-Coated Window 248nm M248-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 248nm M248-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 126nm M126-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 126nm M126-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 126nm M126-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 126nm M126-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 147nm M147-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 147nm M147-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 147nm M147-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 147nm M147-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 157nm M157-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 157nm M157-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 157nm M157-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 157nm M157-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 172nm M172-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 172nm M172-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 172nm M172-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 172nm M172-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 193nm M193-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 193nm M193-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 248nm M248-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 248nm M248-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 308nm M308-2AR-1D-FL (1.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 308nm M308-2AR-1D-FL (1.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 25.4 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 308nm M308-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 308nm M308-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
UV Narrowband AR-Coated Window 353nm M353-2AR-2D-FL (2.0” Diameter)
Teledyne Acton Optics
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UV Narrowband AR-Coated Window 353nm M353-2AR-2D-FL (2.0” Diameter)
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Acton Optics presents UV Narrowband AR-Coated Windows featuring durable, electron-beam–deposited dielectrics designed to minimize reflections occurring from uncoated surfaces of substrates. These low-absorption coatings are ideal for increasing the transmittance properties of lenses and reducing second-surface reflections of ...

Specifications
Substrate Material: UV Grade Fused Silica
Antireflection Coating: Coated
Diameter: 50.8 mm
Surface Quality: 10-5 scratch-dig
Surface Flatness: lambda/20
...
Data Sheet
Custom High-Precision Polished Sapphire Optical Windows for Advanced Optical Applications
ARD-OPTICS
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Custom High-Precision Polished Sapphire Optical Windows for Advanced Optical Applications
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Experience cutting-edge performance with ARD-OPTICS High-Precision Optical Windows, made from top-quality sapphire and other glass materials. Our optical windows boast exceptional specifications, including surface quality up to S/D-10/5 according to MIL-PRF-13830B, surface flatness up to lambda/10 @632nm, and parallelism of polished ...

Specifications
Substrate Material: N-BK7, Fused Silica, UV Grade Fused Silica, IR Grade Fused Silica, Sapphire, MgF2, Other
Antireflection Coating: Uncoated
Diameter: 5-200 mm
Surface Quality: 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig, 80-50 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
Data Sheet
Optical Windows by Bern Optics
Bern Optics Inc
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Optical Windows by Bern Optics
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Bern Optics produces highly precise instrument windows that can be customized with a range of reflective or anti-reflection coatings. Available in different glass types, with or without chamfers, and can be produced in custom shapes.

Specifications
Substrate Material: Other
Antireflection Coating: Coated
Diameter: -- mm
Surface Quality: Not Specified
Surface Flatness: Not Specified
...
Data Sheet
Optical Window in Optical Fiber
Nanjing Shuncheng Optical Components Co.,Ltd.
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Optical Window in Optical Fiber
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This optical window is designed to separate, seal, or protect other components in industrial, biomedical, infrared, and military/defense applications.   It is fabricated with two flat, optically transparent surfaces that have exceptional parallelism and transmitted wavefront.

Specifications
Substrate Material: N-BK7, Other
Antireflection Coating: Coated
Diameter: -- mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig
Surface Flatness: Other
...
Data Sheet
BK7 Glass Window for Optical Instruments
Nanjing Shuncheng Optical Components Co.,Ltd.
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BK7 Glass Window for Optical Instruments
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Product Description: The BK7 Glass Window is an optically flat, transparent optical material that allows light into an optical instrument. It is a piece of optical glass with ground and polished faces that are relatively parallel.            This window is designed to protect fragile optical ...

Specifications
Substrate Material: N-BK7
Antireflection Coating: Coated, Uncoated
Diameter: 50 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/2
...
Data Sheet
Fused Silica Window
Nanjing Shuncheng Optical Components Co.,Ltd.
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Fused Silica Window
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The Fused Silica Window is made of high-purity quartz glass, which makes it ideal for applications requiring excellent chemical stability, electrical insulation, and high-temperature resistance. It has a low coefficient of thermal expansion, making it suitable for use in environments with varying temperatures.

Specifications
Substrate Material: Fused Silica
Antireflection Coating: Uncoated
Diameter: -- mm
Surface Quality: Not Specified
Surface Flatness: Not Specified
...
Data Sheet
There are 159 different Flat Windows from suppliers and manufacturers listed in this category. In just a few clicks you can compare different Flat Windows with each other and get an accurate quote based on your needs and specifications. Please note that the prices of Flat Windows vary significantly for different products based on various factors including technical parameters, features, brand name, etc. Please contact suppliers directly to inquire about the details and accurate pricing information for any product model. Simply navigate to the product page of interest and use the orange button to directly reach out to the respective supplier with one click.

Did You know?

An optical flat by definition is a polished flat surface that can be used as a reference against which the flatness of an unknown surface may be compared by measurement. An optical flat utilizes the property of interference to exhibit the flatness on a desired surface. Optical flats are versatile optical components used in many applications, such as inspection of gauge blocks for wear and accuracy, as well as the testing of various components including windows, prisms, filters, mirrors, etc. Optical flats are sometimes given an optical coating and used as precision mirrors for special purposes, such as in a Fabry–Pérot interferometer or laser cavity.
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