发明授权
US06491222B1 Optical path design for scanning assembly in compact bar code readers
有权
用于紧凑型条码阅读器扫描装配的光路设计
- 专利标题： Optical path design for scanning assembly in compact bar code readers
- 专利标题（中）： 用于紧凑型条码阅读器扫描装配的光路设计
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申请号： US09223482申请日： 1998-12-30
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公开(公告)号： US06491222B1公开(公告)日： 2002-12-10
- 发明人: Paul Dvorkis , Edward Barkan
- 申请人： Paul Dvorkis , Edward Barkan
- 主分类号： G06K710
- IPC分类号： G06K710
摘要：
A retroreflective optical scan module, for example in a bar code reader having a window, including a light source for directing a light beam to a symbol to be read, and an optical assembly including a light collecting portion which collects and redirects the light along an optical path to a sensor, wherein the optical axis of the light collecting portion is displaced from that of the emitted light beam so that emitted light partially reflected by the window of the reader does not illuminate the sensor.
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