Image reading apparatus having reflecting mirror that changes over an optical path to read an original at different position

Abstract

In a film scanner capable of reading images from films of different forms, i.e., a cartridge film and a film strip, and arranged to be simply adjustable, image light from the cartridge film is reflected by a reflecting mirror to be projected on an image sensor which converts the projected image light into an image signal. Image light from the film strip is projected onto the image sensor to be converted also into an image signal with the reflecting mirror rotated counterclockwise away from its position by rotating a motor which moves a cam, etc. In manufacturing the film scanner, the position and inclination of the image sensor relative to the film strip are adjusted with the reflecting mirror retracted from its predetermined position, and a base plate on which the image sensor is mounted is fixed by an adhesive to a lens frame with the image sensor set in the adjusted position. For the cartridge film, the inclination of the reflecting mirror relative to the cartridge film is adjusted in its position by rotating an eccentric pin, etc., and the reflecting mirror is fixed at the adjusted inclination by an adhesive.