发明申请
- 专利标题： LIGHT-AMOUNT DETECTING DEVICE, LIGHT SOURCE DEVICE, OPTICAL SCANNING UNIT AND IMAGE FORMING APPARATUS
- 专利标题（中）： 光量检测装置，光源装置，光扫描装置和图像形成装置
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申请号： US12039405申请日： 2008-02-28
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公开(公告)号： US20080212999A1公开(公告)日： 2008-09-04
- 发明人: Kensuke Masuda , Tomohiro Nakajima , Satoru Itoh , Daisuke Ichii , Masahiro Soeda , Yoshinori Hayashi
- 申请人： Kensuke Masuda , Tomohiro Nakajima , Satoru Itoh , Daisuke Ichii , Masahiro Soeda , Yoshinori Hayashi
- 优先权： JP2007-052241 20070302; JP2007-063260 20070313; JP2007-064649 20070314; JP2007-105402 20070413
- 主分类号： G01B9/02
- IPC分类号： G01B9/02 ; G02B26/08 ; G03G15/00
摘要：
A light-amount detecting device includes: a light source which emits a light beam; a branching optical element which divides the light beam emitted from the light source into a first light beam traveling in a predetermined direction and a second light beam traveling in a direction different to the predetermined direction; a light-condensing element which condenses the second light beam; a light-receiving element having a light-receiving surface which receives the second light beam condensed by the light-condensing element; and a detector which detects a light-amount of the second light beam received by the light-receiving element, and at least one of a direction of reflected light of the second light beam reflected from the light-receiving surface of the light-receiving element and spread of the reflected light of the second light beam reflected from the light-receiving surface of the light-receiving element is adjusted to control a light-amount of the reflected light of the second light beam returning to the light source.
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