Color picture reader

Abstract

Abstract PURPOSE:To attain the reading of an original at a high speed by providing an optical filter comprising plural filter elements having different transmitted light band characteristic on an optical path from a light source reaching an image sensor. CONSTITUTION:A cylindrical optical filter where plural filter elements 6a-6c having different transmitted light band characteristic from each other are arranged around the shaft with an equal angular interval is provided freely turnably around the light source 1. The optical filter is turned at a prescribed period corresponding to the period of original reading scanning of the image sensor 4 by a motor 8. Thus, the filter elements 6a-6c are inserted sequentially selectively into the optical path 9 from the light source 1 to the original 2. Then three kinds of photoelectric transducing signals corresponding to the number of the filter elements 6a-6c are obtained.

Inventors

• 👤 Norihiko Koizumi
• 👤 小泉　則彦
• 👤 Hiroyuki Saito
• 👤 宏之 斎藤

Bibliographic Details