Contact sensor

Abstract

Abstract PURPOSE:To improve remarkably the performance of a contact sensor without effect of an external light and a reflected light of a lighting light source by providing an image forming light shield section so as to surround an optical axis of a collecting optical fiber array and an IC light shield section to protect an IC mounted on a board from the reflected light of the lighting light source with an incorporating IC cover. CONSTITUTION:An original 13 is positioned to a focus of a lighting light source 7 by an original guide 8 and fed by an original feeding roller 10. The optical information of the original face is formed to a photoelectric converting element on the board 1 placed at the focus of the collecting optical fiber array 9, converted into an electric signal and outputted from a connector 4. External light and the reflected light from the lighting light source 7 are shielded by an image forming light shield section 12 and an IC light shield section 12', and no external disturbance by the external light exists from the array 9 till the photoelectric converting element and a high performance output is given from a connector 4.

Inventors

• 👤 Naoki Kinoshita
• 👤 直紀 木下
• 👤 Takehiko Yamada
• 👤 山田　武彦

Bibliographic Details