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Flat Windows

High-Precision ZnSe Window for Infrared Optics
Sinoptix
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High-Precision ZnSe Window for Infrared Optics
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The High-Precision ZnSe (Zinc Selenide) Window is specifically designed for advanced infrared (IR) optical applications, offering superior transmission across the infrared spectrum. ZnSe is a highly transparent material in the IR region, making it an ideal choice for IR laser systems, thermal imaging, and spectroscopy. With a low ...

Specifications
Substrate Material: ZnSe
Antireflection Coating: Uncoated
Diameter: 300 mm
Surface Quality: 20-10 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
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High-Precision MgF₂ Window for UV and IR Optics
Sinoptix
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High-Precision MgF₂ Window for UV and IR Optics
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The High-Precision MgF₂ (Magnesium Fluoride) Window is an essential optical component designed for both UV and infrared (IR) applications. With exceptional transmission properties across a wide spectral range, from ultraviolet (UV) to infrared (IR), this window is ideal for use in spectroscopic instruments, laser systems, and ...

Specifications
Substrate Material: MgF2
Antireflection Coating: Coated, Uncoated
Diameter: 160 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
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High-Precision BaF₂ Window for Infrared Optics
Sinoptix
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High-Precision BaF₂ Window for Infrared Optics
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The High-Precision BaF₂ (Barium Fluoride) Window is an essential optical component designed for infrared (IR) optical applications. Known for its excellent transmission across a wide IR wavelength range, this window is ideal for use in spectroscopic instruments, thermal imaging systems, and high-performance IR lasers. The BaF₂ ...

Specifications
Substrate Material: BaF2
Antireflection Coating: Coated
Diameter: 200 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
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High-Precision CaF₂ Window for UV and Broadband Optics
Sinoptix
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High-Precision CaF₂ Window for UV and Broadband Optics
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The High-Precision CaF₂ (Calcium Fluoride) Window is a superior optical component designed for UV and broadband optical applications. Manufactured from high-quality CaF₂ material, these windows are highly transparent across a wide range of wavelengths, from ultraviolet (UV) to infrared (IR), making them ideal for demanding optical ...

Specifications
Substrate Material: CaF2
Antireflection Coating: Coated
Diameter: 320 mm
Surface Quality: 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig
Surface Flatness: lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda
...
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High-Quality Silicon Wafer for Semiconductor and Photonics Applications
Sinoptix
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High-Quality Silicon Wafer for Semiconductor and Photonics Applications
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The High-Quality Silicon Wafer is engineered to meet the demanding requirements of the semiconductor and photonics industries. Available in a wide range of sizes and configurations, these wafers are made from CZ (Czochralski) or FZ (Float Zone) silicon, providing exceptional purity and crystal structure. With diameters ranging from ...

Specifications
Substrate Material: Si
Antireflection Coating: Uncoated
Diameter: 304.8 mm
Surface Quality: 20-10 scratch-dig, 40-20 scratch-dig
Surface Flatness: lambda/4
...
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Sapphire Wafer for Semiconductor and Photonics Applications
Sinoptix
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Sapphire Wafer for Semiconductor and Photonics Applications
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The Sapphire Wafer is an advanced optical component designed specifically for the semiconductor and photonics industries. Manufactured from 99.999% pure AL₂O₃ monocrystalline sapphire, it offers unparalleled durability and performance. With customizable dimensions ranging from 1 inch (25.4 mm) to 8 inches (203.2 mm) and thickness ...

Specifications
Substrate Material: Sapphire
Antireflection Coating: Uncoated
Diameter: 203.2 mm
Surface Quality: 60-40 scratch-dig
Surface Flatness: lambda/4
...
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High-Performance Diamond Optical Window
Sinoptix
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High-Performance Diamond Optical Window
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The High-Performance Diamond Optical Window is meticulously engineered for applications requiring exceptional optical quality, particularly in terahertz (THz) technology and extreme environments. Constructed from MPCVD polycrystalline diamond, this window ensures unmatched durability and optical clarity. With a maximum diameter of ...

Specifications
Substrate Material: Other
Antireflection Coating: Uncoated
Diameter: 25.4 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/2
...
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MgO Optical Window for Advanced Research Applications
Sinoptix
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MgO Optical Window for Advanced Research Applications
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The MgO Optical Window is a high-performance component designed specifically for advanced research applications in photonics and material science. Made from high-quality magnesium oxide (MgO), it offers excellent optical clarity and minimal distortion, essential for accurate experimental results. This window operates effectively ...

Specifications
Substrate Material: Other
Antireflection Coating: Uncoated
Diameter: 25.4 mm
Surface Quality: 60-40 scratch-dig
Surface Flatness: lambda/2
...
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Silicon Optical Window for Infrared Applications
Sinoptix
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Silicon Optical Window for Infrared Applications
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The Silicon Optical Window is engineered for high-performance applications in infrared optics. Constructed from premium optical-grade silicon, this window boasts a standard diameter of 108mm, with the flexibility to customize dimensions to meet specific project needs. The BBAR (Broadband Anti-Reflective) coating significantly ...

Specifications
Substrate Material: Si
Antireflection Coating: Coated
Diameter: 100 mm
Surface Quality: 20-10 scratch-dig
Surface Flatness: lambda/4
...
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TPX Optical Window for Terahertz and Cryogenic Applications
Sinoptix
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TPX Optical Window for Terahertz and Cryogenic Applications
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The TPX Optical Window is a specialized optical component designed for high-performance use in terahertz and cryogenic devices. Constructed from premium optical-grade TPX material, this window offers exceptional light transmission across a wide wavelength range, from 300 nm to 2000 µm, while effectively blocking wavelengths ...

Specifications
Substrate Material: Other
Antireflection Coating: Uncoated
Diameter: 25.4 mm
Surface Quality: 60-40 scratch-dig
Surface Flatness: Not Specified
...
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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
...
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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
...
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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
...
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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
...
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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
...
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Optical Fused Silica Quartz Glass Laser Protective Window
Henan UM Optics Ltd
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Optical Fused Silica Quartz Glass Laser Protective Window
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Quartz 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. With high transmittance, good heat resistance, and excellent environmental durability, fused silica windows are well ...

Specifications
Substrate Material: Fused Silica, UV Grade Fused Silica, IR Grade Fused Silica, Sapphire
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
...
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Sapphire Glass Window for Electronic Sensors
Henan UM Optics Ltd
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Sapphire Glass Window for Electronic Sensors
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Sapphire window is one of the basic optical components in optics, usually used as a protective window for electronic sensors or external environment detectors. It is used to separate the environment on both sides, such as separating the inside and outside of the instrument, so that the inside and outside of the instrument are ...

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: Coated
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
...
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CaF2 Calcium Fluoride Protective Window
Henan UM Optics Ltd
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CaF2 Calcium Fluoride 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
...
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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
...
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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
...
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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
...
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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
...
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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
...
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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
...
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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
...
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There are 172 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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