发明名称 |
OPTOELECTRIC MULTISPECTRAL RECEPTION SYSTEM WITH HIGH DYNAMIC RANGE |
摘要 |
System in which multispectral filtering and variable optical attenuation are effected on the same support. In the case of a supporting disc it has two angular graduated attenuators produced symmetrically with respect to a referenced diameter. Each attenuator also forms optical filters in a given spectral band so as to be able to operate in two separate bands. The disc is positioned in the vicinity of a relay objective positioned between the receiving objective and the opto-electrical transducer. The detected signal supplies a loop controlling the angular position of the disc. The disc is controlled in such a way that the switching of the band takes place on passing through the maximum density zones of the attenuators. |
申请公布号 |
DE3065975(D1) |
申请公布日期 |
1984.02.02 |
申请号 |
DE19803065975 |
申请日期 |
1980.04.14 |
申请人 |
THOMSON-CSF |
发明人 |
LEPEYTRE, JEAN-PAUL;ROUCHON, JEAN-MARC |
分类号 |
G01J3/12;G02B5/20;G02B7/00;(IPC1-7):G02B5/20 |
主分类号 |
G01J3/12 |
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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