
US Patent No: 4,577,932
Number of patents in Portfolio can not be more than 2000
Multi-spot modulator using a laser diode
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Mar 25, 1986
Issued date -
May 8, 1984
filing date -
06/608,222
serial no -
Expired
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Abstract
A multi-spot light modulator using a laser diode is disclosed in which a single light pulse from the laser diode generates a multi-spot image of a data pattern, each spot corresponding to an active bit of the data pattern. The ability of a pulsed laser diode to generate a narrow light pulse is used to image an acoustic wave corresponding to the data pattern without the normal degradation in resolution caused by the motion of the acoustic wave.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,421,387 Extended thin film light modulator/scanner | 9 | 1981 | |
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| 4,280,755 Graphic symbol selection and recording apparatus | 7 | 1979 | |
| 4,240,715 Graphic symbol line position control means for high speed printing | 4 | 1979 | |
| 4,390,875 Message character image projection control system | 7 | 1982 | |