发明授权
US07165007B2 Method and apparatus for direct image pick-up of granular speck pattern generated by reflecting light of laser beam
失效
用于通过反射激光束的光产生的颗粒状斑点图案的直接图像拾取方法和装置
- 专利标题： Method and apparatus for direct image pick-up of granular speck pattern generated by reflecting light of laser beam
- 专利标题（中）： 用于通过反射激光束的光产生的颗粒状斑点图案的直接图像拾取方法和装置
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申请号： US10737336申请日： 2003-12-16
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公开(公告)号： US07165007B2公开(公告)日： 2007-01-16
- 发明人: Kenichiro Kobayashi , Hiroyuki Konno
- 申请人： Kenichiro Kobayashi , Hiroyuki Konno
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toyoseikiseisakusho
- 当前专利权人： Kabushiki Kaisha Toyoseikiseisakusho
- 当前专利权人地址： JP Tokyo
- 代理机构： Price, Heneveld, Cooper, DeWitt & Litton, LLP
- 优先权： JP2000-166833 20000426
- 主分类号： G01D1/00
- IPC分类号： G01D1/00
摘要：
A granular speck pattern is generated by a reflecting laser beam as an object to be measured is irradiated with a laser beam. This granular speck pattern is directly picked up as an image index by a line sensor. An A/D converter converts an analog signal supplied from the line sensor to a digital signal, and a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A display device displays the amount of movement calculated by said processing unit.
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