Optoelectric detection device especially for laser radiation
AssigneeThomson-CSF
InventorsFrancis Jourdan, Patrice Marquet, Francois Ternant
Life of this patent
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Abstract
A device for radiation detection over a broad field, especially for laser radiation detection. The device comprises a photodetector associated with an optical receiver formed by two diaphragms which delimit the field, and an optical diffusing element. In a preferred embodiment, a diffusing paint is deposited on a flat surface of a mechanical part, and a mirror for reflecting the diffused radiation makes it possible to mount at the rear end of the device either the photodetector or an optical fiber terminal to which the photodetector is remotely coupled.
Claims6
An optoelectric incident radiation detection device applicable in particular to detecting a beam of incident laser radiation comprising:
- optical means for receiving the incident radiation from the observed field which observed field is centered on the optical axis of said optical means;
- and
- photodetection means comprising at last one photodetector element having a receiving surface for detecting the radiation transmitted via said optical means for receiving to said receiving surface;
- said optical means for receiving being formed by a set of two diaphragms for delimiting said field of observation and by means for diffusing the radiation passed by said two diaphragms and incident on said means for diffusing so that a fraction of the light energy transported by any beam of radiation incident on said means for diffusing is directed to the receiving surface of said photodetection means, said means for diffusing being constituted by a diffusing paint applied on a surface of mechanical part, the diaphragms and the receiving surface of the photodetection means being located on the same side of the diffusing means.
Dependencies are inferred from the claim text.