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Flat Windows (Surface Flatness: lambda/2)

Germanium Optics
Sinoptix
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Germanium Optics
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Sinoptix’s Optical Germanium Components are engineered for exceptional performance in infrared (IR) applications, particularly in the 8–14 µm thermal range. Germanium (Ge), a metalloid with a high refractive index (~4.0), provides outstanding IR transmission (1.8–23 µm), low optical dispersion, and ...

Specifications
Substrate Material: Ge, CaF2, IR Grade CaF2, MgF2, BaF2, Si
Antireflection Coating: Coated, Uncoated
Diameter: 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/20, lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda, Lambda/40, Other
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Optical BaF2 Barium Fluoride Infrared Temperature Measurement Window
Henan UM Optics Ltd
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Optical BaF2 Barium Fluoride Infrared Temperature Measurement Window
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The Optical BaF2 (Barium Fluoride) Infrared Temperature Measurement Window by UM OPTICS is a high-performance optical component designed to separate environmental conditions while protecting internal devices. Manufactured from premium BaF2, this window offers excellent transmission across ultraviolet, visible, and infrared ...

Specifications
Substrate Material: BaF2
Antireflection Coating: Coated
Diameter: 3 mm
Surface Quality: 60-40 scratch-dig
Surface Flatness: lambda/2
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High-Precision Optical Windows | Durable Protective Barriers for Sensors
Minyi Technology
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High-Precision Optical Windows | Durable Protective Barriers for Sensors
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Optical Windows are flat, plane-parallel plates that are often used as protective barriers for electronic sensors or detectors from outside environments. Optical Windows should be selected based on the material transmission or mechanical properties of the substrate. Optical windows do not cause change in the magnification of a system.

Specifications
Substrate Material: N-BK7, Fused Silica, UV Grade Fused Silica, Sapphire, Ge, CaF2, MgF2
Antireflection Coating: Uncoated
Surface Quality: 60-40 scratch-dig
Surface Flatness: lambda/2
Thickness: 0.2 mm
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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-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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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: N/A
Diameter: 6 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: N/A
Diameter: 6 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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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 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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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: 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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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 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
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Sapphire Optics
Sinoptix
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Sapphire Optics
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Used mostly for their very high hardness, sapphire optics are also used for their good transmission from UV to NIR. Due to the increase of actors in the sector, sapphire components prices decreased a lot in recent years, don\'t hesitate to challenge your current supply.  https://sinoptix.fr/sapphire/

Specifications
Substrate Material: Sapphire
Antireflection Coating: Coated, Uncoated
Diameter: 350 mm
Surface Quality: 10-5 scratch-dig, 20-10 scratch-dig, 40-20 scratch-dig, 60-40 scratch-dig, 80-50 scratch-dig, Not Specified
Surface Flatness: lambda/20, lambda/10, lambda/8, lambda/6, lambda/4, lambda/2, 1 lambda, Lambda/40, Other, Not Specified
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TOWER OPTICAL: Window WB11-025
Tower Optical Corporation
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TOWER OPTICAL: Window WB11-025
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Windows are used to isolate different physical environments while allowing light to pass. The selection of a window should consider the properties of the different optical materials, transmission, wavelength range, and resistance to the environment. Tower offers a wide range of different materials and a variety of anti-reflecting ...

Specifications
Substrate Material: N-BK7, UV Grade Fused Silica, Sapphire
Antireflection Coating: Uncoated
Diameter: 25 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/2
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TOWER OPTICAL: Window WB11-012
Tower Optical Corporation
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TOWER OPTICAL: Window WB11-012
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Windows are used to isolate different physical environments while allowing light to pass. The selection of a window should consider the properties of the different optical materials, transmission, wavelength range, and resistance to the environment. Tower offers a wide range of different materials and a variety of anti-reflecting ...

Specifications
Substrate Material: N-BK7, UV Grade Fused Silica, Sapphire
Antireflection Coating: Uncoated
Diameter: 12.5 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/2
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TOWER OPTICAL: Window WB11-005
Tower Optical Corporation
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TOWER OPTICAL: Window WB11-005
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Windows are used to isolate different physical environments while allowing light to pass. The selection of a window should consider the properties of the different optical materials, transmission, wavelength range, and resistance to the environment. Tower offers a wide range of different materials and a variety of anti-reflecting ...

Specifications
Substrate Material: N-BK7, UV Grade Fused Silica, Sapphire
Antireflection Coating: Uncoated
Diameter: 5 mm
Surface Quality: 40-20 scratch-dig
Surface Flatness: lambda/2
Data Sheet
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On FindLight marketplace you will find 18 different Flat Windows (Surface Flatness: lambda/2) from top global suppliers. Compare features, request pricing, and connect instantly with manufacturers — no registration required.