Zinc selenide optical window plate

Optical window plate is a kind of double-sided polished parallel plate, the surface quality of optical glass with optical level, will not change the multiplier of the optical system, Commonly used as protective glass for optical detectors, sensors, optical lenses, detectors, etc. Substrate materials include various optical glass, ultraviolet fused quartz, infrared fused quartz, calcium fluoride(CaF2), magnesium fluoride(MgF2), zinc selenide (ZnSe), germanium(Ge), silicon(Si) and other crystal materials. And provide anti-reflection coating, high reflective coating, spectroscopic coating, metal coating and other optical coating. When choosing an optical window, consider whether the material transmission and mechanical properties of the window fit your application. Yukang photonics can provide a variety of materials to respond to a variety of industrial production scenarios.

The optical window filters produced by yukang photonics are divided into three categories: ultraviolet window, visible window and infrared window. The best solution can be selected according to the specific requirements of customers.

While serving as window protection, it does not lose light ehergy, improve transmittance, increase hardness, reduce reflection and increase surface smoothness. Application fields involve various aspects, such as: smart home system, biometrics system, intelligent robot accessories, laser barcode scanning, infrared remote control, medical device display window, camera UV mirror, etc.

Product situation

Zinc selenide is a yellow transparent polycrystalline material with a crystalline particle size of about 70 nm and a transmittance range of 0.5-15 nm. The method synthesized by chemical vapor deposition (CVD) has no impurity absorption and very low scattering loss. Due to the small absorption of 10.6 μm wavelength light, it has become the preferred material for optical devices in high-power CO2 laser systems. It is also a widely used material in different optical systems in the whole transmittance band.

Zinc selenide has a high transmittance in the 600nm-16 nm band and is commonly used in thermal imaging, infrared imaging, and medical systems. Because of its low absorption rate, zinc selenide is especially suitable for high-power CO2 lasers. Zinc selenide has a high resistance to thermal shock, making it the best optical material for high power CO2 laser system. Hardness is only 2/3 of the multispectral ZnS, the material is soft and easy to produce scratches, and the material refractive index is larger, so the surface needs to be plated with a high hardness anti-reflection film to protect and obtain a higher transmittance. In its usual spectral range, the scattering is very low. When used as high power laser devices, it is necessary to strictly control the absorption of the material and internal structure defects, and adopt the polishing technology with the minimum damage degree and the coating technology with the highest optical quality.
 

Matters needing attention

Zinc selenide material is relatively soft (hardness of noughter's 120), easy to brush flowers, recommended not to be used in harsh environments. Be extra careful when holding and cleaning. Use even force when holding or wiping. Wear gloves or rubber finger covers on the zui to prevent stains. Do not use tweezers or other tools.
 

Product features

■  The spectral range ranges from 2 to 15 nm

■  Low absorption coefficient and high thermal stability, good thermal shock resistance

■  The low hardness makes the surface of ZnSe optical window plate easy to scratch, which requires careful operation

■  The company provides coating services such as 2-3 micron anti-reflection, 3-10 micron anti-reflection, 4-12 micron anti-reflection and 10.6 micron anti-reflectioncoating.

Technical indicators

Surface accuracy：λ/ 6@632.8nm; λ / 2 @ 632.8 nm

Surface Quality： 40-20,60-40（MIL）

Edge chamfering： < 0.25mm×45°

Size tolerance： +0.0/-0.2mm

Clear aperture： >90%

Dimensions： according to customer requirements

Coating： coating according to customer requirements