发明名称 |
OPTICAL SCANNER HAVING MULTIPLE, SIMULTANEOUS SCAN LINES WITH DIFFERENT FOCAL LENGTHS |
摘要 |
An optical scanner uses frequency modulation and detection techniques to produce and utilize multiple, simultaneous scan patterns in which corresponding scan lines have different focal lengths. Two or more solid state lasers are modulated at unique frequencies. The frequency modulated output beams pass through different combinations of focusing lenses and are deflected by a single beam deflecting apparatus. Light reflected from any scanned object is detected. The resulting multi-frequency signal is applied to a plurality of bandpass filters to separate the returned signal into a plurality of separately decodable signals. |
申请公布号 |
DE3566053(D1) |
申请公布日期 |
1988.12.08 |
申请号 |
DE19853566053 |
申请日期 |
1985.01.02 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BROOCKMAN, ERIC CHARLES;CATO, ROBERT THOMAS;DICKSON, LEROY DAVID |
分类号 |
G06K7/12;G06K7/015;G06K7/10;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/12 |
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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