Infrared Transmission Performance of Optical Windows
1. Basic Overview of Optical Windows
An optical window is an optical element used to transmit optical signals between the external environment and internal equipment. It can protect the equipment and ensure the transmission of optical signals. Common optical window materials include silicon, sapphire, ZnSe, etc.
2. Transmission Performance of Optical Windows
The transmittance of optical windows refers to the material’s ability to transmit optical wavelengths. A good optical window should have high transmittance and low absorptivity in the optical wavelength range that needs to be transmitted.
For infrared rays, the specific transmittance depends on the material of the window and its purpose. The transmittance of the optical window is related to its absorption coefficient. For infrared rays, the transmittance of the window is greatly affected by the absorption coefficient of the material. Generally, for infrared rays, the transmittance of silicon is low, while the transmittance of sapphire and ZnSe is relatively high.
For equipment that needs to work under infrared rays, such as infrared cameras, infrared spectrometers, etc., we need to choose window materials with good infrared transmittance. At the same time, other factors need to be considered, such as the thickness of the window, surface state, etc.
3. Application Fields of Optical Windows
Optical windows are widely used in various devices, such as optical sensors, infrared imagers, fiber optic communications, etc. In these devices, optical windows can effectively transmit and transmit the required light signals to ensure the normal operation of the equipment.
In short, it is very important to understand the transmittance performance of optical windows and infrared transmittance performance. When purchasing and applying optical windows, we need to select appropriate materials and corresponding specifications according to specific needs to ensure the effectiveness of their transmittance performance.
ABOUT BORISUN
Hanzhong Brisun Optics Co., Ltd. Is the high precision optical element manufacturer provides customized production of Various optical lenses, including spherical lens, cylindrical lens, optical window, mirror, prism, filter, metal base mirror and other high-precision optical elements. The base materials include various optical glass, fused quartz, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), sapphire, metal and other materials. And provide antireflective film, high reflection film, spectroscopic film, metal film and other optical coatings.
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