apparatus for transmission of electromagnetic waves, in particular for the infrared region with a planar source of radiation and a reflector.

摘要

An infrared radiation emitter apparatus comprises a plane source (2) of infrared rays and a reflector (3a, 3b). …??In order to avoid the problem due to captive rays and to multiple reflections, the cross-section of each half-reflector (3a, 3b) located to one side of the plane of symmetry P has the shape of an elliptical arc (E) whose two foci are respectively formed by the first end (2a) of the plane source (2) and the first end (4a) of the target (4) which are both situated on the other side of the plane of symmetry, this elliptical arc (E) extending between the second end (2b) of the plane source (2) and the point of intersection of the ellipse (E) with the direct ray (R1) going from the first end (2a) of the plane source to the second end (4b) of the target. …IMAGE…