发明名称 |
Acousto-optic image scanner |
摘要 |
An acousto-optic image scanner employing pulses of acoustic surface waves which propagate along the length of a piezoelectric crystal performing as a traveling phase grating to diffract a collimated monochromatic light beam which has a spatial light distribution corresponding to the information content of a line of the image. The light beam propagates through the width of the crystal thus providing an extensive electro-optic interaction length for increased diffraction efficiency. The light intensity at a first-order spot is detected to provide a temporal signal representative of the light distribution of an image line. Scanning of colored images can be accomplished by utilizing a chromatic beam and detecting the light at the first-order spots corresponding to the three different wavelengths present in the illuminating beam.
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申请公布号 |
US4093976(A) |
申请公布日期 |
1978.06.06 |
申请号 |
US19760717974 |
申请日期 |
1976.08.26 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
DAS, PANKAJ K. |
分类号 |
G02F1/33;H04N5/84;H04N9/04;(IPC1-7):H04N9/10;H04N3/10;G02F1/11;H04N5/30 |
主分类号 |
G02F1/33 |
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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