PURPOSE: To improve the lighting efficiency and miniaturize the apparatus, by providing photodiodes as light-detecting elements and an electroluminescence as a lighting source on the same transparent board.
CONSTITUTION: An electroluminescence (EL)3 is rectilinearly provided on the lower surface of a transparent board 1, facing a light-detecting part 2. Light- detecting signals are drawn out from metal electrodes 4 and 5. The light emitted from the EL3 passes throuth the transparent board 1 and irradiates the surface of an original 6 through each gap t between photodiodes 7 and 7 adjacent to each other. The light reflected therefrom is directly incident on the light-receiving surfaces of the respective photodiodes 7. The lighting for the manuscript 6 can be performed efficiently and with a sufficient quantity of light by the EL3 located adjacently thereto. In addition, the light detection is performed by directly the light reflected from the manuscript 6.
SEGAWA HIDEO
SAKURAI KOUICHI
MORI KOUJI
ITAGAKI MASAKUNI
ISHIWATARI TATSUMI
| JPS5555228A | 1980-04-23 | |||
| JPS54176391U | 1979-12-13 |