发明名称 |
Irregular pattern reader |
摘要 |
An object of the invention is to achieve a small and thin irregular pattern reader comprising: a prism possessing a detection surface on which a subject to be detected having an irregular pattern is put and an incident plane having a first angle of inclination to the detection surface and emitting a light reflected on the detection surface corresponding to an incident light incident upon the incident plane; a first optical system possessing a light source and causing a light from the light source to be incident upon the incident plane of the prism with its optical axis substantially in parallel to the detection surface; and a second optical system for transmitting the emission light emitted from the prism to an image pick-up device.
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申请公布号 |
US6912300(B1) |
申请公布日期 |
2005.06.28 |
申请号 |
US20000621553 |
申请日期 |
2000.07.21 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
OKAMOTO TATSUKI;SATO YUKIO;NISHIMAE JUNICHI;KAWANO HIROYUKI |
分类号 |
G02B5/04;G06K9/00;(IPC1-7):G06K9/00 |
主分类号 |
G02B5/04 |
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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