Patent ID: 6417946
Filing Date: 2002-07-09
Classification: H01L,H04B

Abstract:
A radiation transceiver (1) comprising a housing including a first housing section (2 . . . ) having a flat first surface (2A) and a flat second surface (2B) parallel to said first surface, said flat first and second surfaces being spaced from each other by a given housing thickness (d), at least one integrated circuit (6) for signal processing enclosed in said first housing section, an emitter chip (7) and a detector chip (8) enclosed in said housing, electrical terminals (9) connected to said integrated circuit (6) and to said emitter and detector chips (7, 8), said electrical terminals (9) extending out of said housing to define a mounting plane (11), at least one second housing section (3, 4) forming at least one lens for focussing radiation energy, said second housing section (3, 4) being molded along an edge (E) of and as an integral part of said first housing section (2), said lens forming second housing section (3, 4) having at least one hemispherical configuration and a lens diameter (D) that is larger than said given housing thickness (d) thus D>d so that said second housing section positioned along said edge (E) projects below said mounting plane (11) defined by said electrical terminals (9) without projecting outside said flat first surface (2A) of said housing, said at least one lens having a directional axis (12, 19, 32) for a side view mode or a down view mode, whereby said larger lens diameter provides a respectively improved transmission and reception range.