发明名称 |
Optical scanner using planar reflecting holograms |
摘要 |
An optical scanner suitable for use with a bar code reader includes a light source for generating a laser beam, a laser beam scanning device, a scanning pattern generating optical system, and a signal light condensing optical system for deflecting scattered signal light scattered by an object to be read to introduce the light to a photo-detector. The scanning pattern generating optical system or signal light condensing optical system includes two reflective holograms disposed substantially in parallel with each other to produce a reflection beam having an angle of reflection which is different from an angle of incidence of the laser beam thereon. The scanner is a miniaturized apparatus as a result of the reflection holograms.
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申请公布号 |
US5231277(A) |
申请公布日期 |
1993.07.27 |
申请号 |
US19920892405 |
申请日期 |
1992.05.29 |
申请人 |
FUJITSU LIMITED |
发明人 |
ARITAKE, HIROKAZU;ICHIKAWA, TOSHIYUKI;YAMAZAKI, KOZO;YAMAGISHI, FUMIO;IKEDA, HIROYUKI |
分类号 |
G06K7/10 |
主分类号 |
G06K7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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