发明名称 |
Laser scanning based bar code symbol reading system for producing a 3-D scanning volume substantially free of spatially and temporally coincident laser scanning planes |
摘要 |
A holographic laser scanner of ultra-compact design capable of reading bar and other types of graphical indicia within a large scanning volume using holographic optical elements and visible laser diodes. The holographic optical elements are arranged on the scanning disc in such a manner so that none of the laser scanning planes generated within the 3-D scanning volume of the system are spatially and temporally coincident with any other laser scanning plane within the 3-D scanning volume. This novel feature of the present invention ensures that there is substantially zero cross-talk at the plurality of photodetectors provided within the system, significantly improving the performance of the system.
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申请公布号 |
US7395968(B2) |
申请公布日期 |
2008.07.08 |
申请号 |
US20060640538 |
申请日期 |
2006.12.15 |
申请人 |
METROLOGIC INSTRUMENTS, INC. |
发明人 |
DICKSON LEROY;CHECK FRANK;GROOT JOHN;KNOWLES C. HARRY |
分类号 |
G06K7/10;G02B26/10;G06K7/14;G06K17/00;G06Q10/00;G07G1/00 |
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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