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The central wavelength of far-infrared filter is generally within the range of 2.0um-25um. The film is coated with silicon wafer, germanium, sapphire, magnesium fluoride and calcium fluoride as the substrate. The peak value of the filter can reach more than 90%.

Material: Optical glass (in line with environmental protection ROHS)

Center wavelength :1-10um

Working band: 2.5-25um 1.8-9.5um

Peak transmission: over 90% T>

Common working bands:

5.5um long wave pass filter

@ T < 5.5 um plus or minus 1% to 1%

6.3 um um 14 @ T 85% or higher

7300nm long wave pass filter

@ T < 7.3 um plus or minus 1% to 1%

7.8 1 um 85% @ T > 95% or higher

Common applications: infrared thermometer, infrared thermography, CO2 detection, methane detection meter, carbon monoxide detection, alcohol temperature detection, sulfur dioxide detection and other fields.

Huizhou Yisu photonics Co., LTD is a manufacturing enterprise specializing in the r&d, sales and technical services of precision optical components, optical film products, optical lenses, prisms and optical filters.We adhere to the tenet of quality first, reputation first, and serve our customers with the concept of integrity, efficiency, hard work and win-win. We firmly believe that professional quality, attitude to win the future.