Long wavelength pass while absorb or reflect shot wavelength.
Applications:
1. Optical equipment
2. Automatic optical inspection equipment (AOI).
3. Laser instruments.
4. Sensors
1. Spectral characteristics: various item. 2. Physical characteristics: (1) Thickness: glass: 1~4mm. (2) Dimension: a. Square: 3 x 3 ~ 150 x 150mm. b. Round: 3 ~ 145. 3. Resistant temperature: 120 celsius.