| 摘要 |
<p>PROBLEM TO BE SOLVED: To write an image stably on a photosensitive body with a light passed through an optical shutter array being irradiated at uniform intensity with light emitted from a light source through a simple arrangement. SOLUTION: A plurality of optical elements 40 are arranged in the arranging direction of optical shutters, between an optical shutter array 20 arranged with a plurality of optical shutters 21 and a light source 10 having a plurality of light emitting points 11 in the arranging direction of the optical shutters. Each optical element has positive power in the arranging direction of the optical shutter and light is emitted such that the leaving angle of luminous flux is smaller and the entering angle thereof and the leaving luminous flux is overlapped partially on the optical shutter array. Light having passed through the optical shutter array is focused through a focus rod lens array on a photosensitive body.</p> |
