An optical bandpass filter has a transmission band surrounded by two blocking bands that allow only a portion of the spectrum to pass. These optical bandpass filters have broad spectral bandwidths in either the ultraviolet, visible, or infrared spectrums. The nearly black filters absorb visible radiation. They are perfect for ultraviolet or infrared detection applications. UV filters are often used to selectively transmit the 254nm and 365nm mercury lines. IR filters are often used in nightvision and IR sensing systems.
請按此處下載 HOYA 有色玻璃濾光片模擬軟體，以用於計算每種 HOYA 玻璃類型的內部和外部穿透率。此軟體可以根據使用者指定的厚度來模擬個別濾光片的效能。