发明授权
US5305047A Pattern projector having a multi-portion projection lens and camera
comprising the same
失效
具有多部分投影透镜的图案投影仪和包括其的相机
- 专利标题： Pattern projector having a multi-portion projection lens and camera comprising the same
- 专利标题（中）： 具有多部分投影透镜的图案投影仪和包括其的相机
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申请号： US62711申请日： 1993-05-18
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公开(公告)号： US5305047A公开(公告)日： 1994-04-19
- 发明人: Shingo Hayakawa , Yasuo Suda , Takeshi Koyama
- 申请人： Shingo Hayakawa , Yasuo Suda , Takeshi Koyama
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-256312 19881011; JPX63-256313 19881011
- 主分类号： G02B7/34
- IPC分类号： G02B7/34 ; G03B13/36 ; G01J1/20
摘要：
A compact light projection system for auto-focus detection apparatus in which a stripe pattern is projected onto an object in a wide range. The light projection device comprises a chart having a pattern to be detected, an illuminating device for illuminating the chart, and a lens assembly for projecting the pattern. The lens assembly includes a first lens having an optic axis and second and third lenses having optic axes respectively inclining at a predetermined angle to the optic axis of the first lens.
公开/授权文献
- US6091344A Communication processing device of toll collecting system 公开/授权日：2000-07-18
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