optical filters It's fabricated by special color glass material. Optical filters are wildly used in the optical communication

  optical filters

It's fabricated by special color glass material. the material will absorption some wavelength and appeare different colors.

The applications are including camerar filter, machine vision lens filter.

Optical filters are wildly used in the optical communication system and the sensor system, but the transmitting effect of the traditional interfere filters is limited by the coating material.