| 摘要 |
PURPOSE:To project a unmagnification image and a variable power image through simple constitution by arranging lens array optical systems for unmagnification projection and variable power projection and using one of those optical systems selectively through a shutter mechanism. CONSTITUTION:When titled projector is applied to an electrophotographic copying machine, the lens array optical system 13 for unmagnification image projection and lens array optical system 14 for variable power image projection are arranged in order and a shutter plate 15 which moves in both directions shown by an arrow (d) selectively is provided between those optical systems 13 and 14 and a platen; and an opening 16 which signifies the optical path of only one optical system is formed according to the movement of the shutter plate. The optical system 13 consists of a known lens array 17 and the optical system 14, on the other hand, consists of a lens array 17 and luminous flux deflecting plates 18 and 19 arranged on both its end surfaces. |
