发明名称 |
Optical filtering device |
摘要 |
An optical filtering device incorporates first and second prisms, the latter prism counteracting the angular dispersion of the former prism. A spatial light modulator provides a positionally variable optical stop located to block radiation within a wavelength interval and received from a location within a scene. Unobscured radiation from that and other scene locations passes to a camera, which produces an image on a display. Opaque pixels in the stop are positioned to block unwanted light sources. The invention attenuates potentially dazzling monochromatic radiation while retaining radiation at other wavelengths for imaging purposes.
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申请公布号 |
US6204941(B1) |
申请公布日期 |
2001.03.20 |
申请号 |
US19960745178 |
申请日期 |
1996.11.07 |
申请人 |
THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND |
发明人 |
BEALE MARC I J;LEWIS MEIRION F |
分类号 |
G01J3/02;G01J3/16;G02B5/20;G02B26/00;(IPC1-7):G01J3/06;G01J3/42 |
主分类号 |
G01J3/02 |
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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