One kind is artificial crystal, including electronic grade crystal rods used in electronic equipment and optical crystal rods for optical purposes.
Secondly, optical chips cover a variety of optical components, including OLPF (OLPF IR-Cut Filter used in various image input devices such as digital cameras, surveillance cameras and computer cameras, optical components used in optical communication such as DWDM, CWDM and Edge Filter, and optical components used in professional coating optical components such as DVD, digital projector and rear projection TV.