초록 ▼

A light retro-reflective responser and data modulator arrangement which, in particular, allows expected incident radiation to be reflected back with no contour field within the operating field and which enables an optical modulator of very small size to be used. It comprises a retro-reflective syste

A light retro-reflective responser and data modulator arrangement which, in particular, allows expected incident radiation to be reflected back with no contour field within the operating field and which enables an optical modulator of very small size to be used. It comprises a retro-reflective system formed by an optical objective and in the corresponding focal zone, a lens, an electronically controlled optical modulator, and a reflective mirror, the two latter items being produced as layers deposited on at least one face of the lens and preferably on the plane face of a plano-convex lens.

대표청구항 ▼

A light retro-reflecting responser and data modulator arrangement intended in particular for producing a transponder in an Identification Friend or Foe system, comprising: reception means for the optical reception, photo-detection and identification of expected incident light radiation, and transmis

A light retro-reflecting responser and data modulator arrangement intended in particular for producing a transponder in an Identification Friend or Foe system, comprising: reception means for the optical reception, photo-detection and identification of expected incident light radiation, and transmission means for transmitting coded light radiation in response which employ a retro-reflective arrangement comprising an optical objective for focussing the said incident radiation onto a mirror preceded by a lens and an opto-electrical modulator inserted in the optical path near the mirror, the said modulator comprising a plate which receives an electrical control, the said mirror and said modulator being as layers deposited on at least one face of the said lens, and a code generator for generating the said electrical control to provide the said reflected response radiation.