Small sensor with matched optical antenna

Andrew V. Shepelev

doi:10.1117/12.179954

22 July 1994 Small sensor with matched optical antenna

Andrew V. Shepelev

Proceedings Volume 2217, Aerial Surveillance Sensing Including Obscured and Underground Object Detection; (1994) https://doi.org/10.1117/12.179954
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Each device ror radiation registration in radio range containes an antenna. Mainly it is the antenna dimention the sensitivity o such a device belnp determined by. Can the antenna ror registration or' more short wave radiation be constructed? The main reature o antenna action is tile conversion o the insident radiation mode into the mode passing through antennaAt this moment the radiation brightness (which is equivalent to a number or photons per mode ) can increase . In accordance WI th the geometry optics (Shtraubel theorem) the lenth and mirror systems cannot raise the radiation brightness in principle and cannot be treated an antennas.

Citation Download Citation

Andrew V. Shepelev "Small sensor with matched optical antenna", Proc. SPIE 2217, Aerial Surveillance Sensing Including Obscured and Underground Object Detection, (22 July 1994); https://doi.org/10.1117/12.179954

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