发明名称 |
Instant portable bar code reader |
摘要 |
In an exemplary embodiment, a hand held bar code reader has a handle portion and a reader head portion which may be held spaced from a bar code data carrier during a reading operation. Light energy is directed outwardly through a window so as to illuminate a bar code sensing region in front of the window having a depth dimension of at least about ten millimeters, and an optical system focuses bar code patterns in the sensing region onto an image photosensor in the reader unit with a resolution so as to read e.g. bar code formats with a minimum bar or space width of about 0.0075 inch or less. The bar code image is converged through a generally rectangular optical aperture and is reflected onto the image photosensor by a reflecting mirror positioned relative to the image photosensor by virtue of their common association with a printed circuit board.
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申请公布号 |
US5187355(A) |
申请公布日期 |
1993.02.16 |
申请号 |
US19920839554 |
申请日期 |
1992.02.24 |
申请人 |
NORAND CORPORATION |
发明人 |
CHADIMA, JR, GEORGE F.;LASER, VADIM |
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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