发明授权
- 专利标题： Optical path blockage detecting device
- 专利标题（中）： 光路阻塞检测装置
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申请号： US20022申请日： 1987-02-27
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公开(公告)号： US4774404A公开(公告)日： 1988-09-27
- 发明人: Kazuo Hasegawa , Junichi Ohuchi , Hiroaki Sasaki
- 申请人： Kazuo Hasegawa , Junichi Ohuchi , Hiroaki Sasaki
- 申请人地址： JPX
- 专利权人： Alps Electric Co., Ltd.
- 当前专利权人： Alps Electric Co., Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX61-108036[U] 19860716; JPX61-108037[U]JPX 19860716
- 主分类号： G01V8/20
- IPC分类号： G01V8/20 ; G06F3/033 ; G06F3/042 ; G08C21/00 ; G01V9/04
摘要：
An optical path blockage detecting device includes optical conductive members located between light emitting elements and light receptor elements and extending parallel to optical paths defined between the light emitting and receptor elements. Each optical conductive member is combined with a light absorbing member which absorbs undesired beams of light so as to improve the optical directivity of incident light and improve the signal-to-noise ratio of the device.
公开/授权文献
- US5924906A Pin connector for construction toy set 公开/授权日：1999-07-20
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