露光用光源装置及び画像形成装置,申请号JP20130002038-传众专利搜索

露光用光源装置及び画像形成装置

申请公布号：JP6029474(B2)

申请号：JP20130002038

申请日期：2013.01.09

申请公布日期：2016.11.24

申请人：

キヤノン株式会社

发明人：沼田愛彦

分类号：B41J2/447;B41J2/455;G03G15/04;H04N1/036

主分类号：B41J2/447

摘要：Provided is an exposing device capable of enhancing usage efficiency of light and preventing degradation of imaging property due to a misalignment with a photosensitive drum. The exposing device includes: a laser array including multiple lasers arranged in a predetermined direction; and an optical system guiding light emitted from the each of the multiple lasers to a photosensitive member and focusing the light on the photosensitive member, in which the optical system includes multiple phase modulation elements to decrease an added phase lag in proportion to distance from a center axis that is defined by a principal light beam emitted from the each of the multiple lasers.