| 摘要 |
PURPOSE:To reduce size and to simplify operation by forming a color sensor of a liquid crystal filter which can control a spectral characteristics and a photosensor which detects the light transmitted through said liquid crystal filter and converts the light to an electrical signal. CONSTITUTION:A liquid crystal filter 11 which can control a spectral characteristics and a photosensor 12 on the light transmission side of said filter 11 are provided. For example, an amorphous silicon Hpin photodiode can be used for the photosensor 12. More specifically, a transparent electrode 13 such as ITO is formed on the rear surface of the filter 11 and a p type layer 14 of amorphous silicon is formed on the electrode 13. An i type layer 15 of amorphous silicon is formed on the layer 14 and an n type layer 16 of amorphous silicon is formed on the layer 15. An electrode 17 of aluminum, etc. is formed on the layer 16. Various filters are usable for the filter 11. |
