G - Physics
01
J
340/155, 88/97
G01J 1/04 (2006.01) G01S 3/78 (2006.01) G01S 3/781 (2006.01) G01S 3/784 (2006.01) G02B 17/06 (2006.01)
Patent
CA 1320369
26648-6 ABSTRACT The detector system for the directional detection of laser radiation incorporates individual optical systems that cover a prescribed total solid angle. Each individual optical system con- sists of a photoconductor and a photoconcentrator which is essen- tially funnel-shaped and tapers towards the end of the photocon- ductor and is of a rotationally symmetrical shape. The funnel wall is reflective on the inside and is so shaped that the fol- lowing condition is fulfilled: AK sin2 .theta. max > AF sin2 .theta. g wherein: AK is the surface of the light-accepting opening of the photocon- centrator, AF is the area of the photoconductor, .theta. max is the maximum acceptance angle of the inlet optical system, and .theta. g is the fibre acceptance angle that is defined by the numerical apperture An = sin .theta. g of the photoconductor.
600804
Poisel Hans
Schreiber Martina
Trommer Gerd
Fetherstonhaugh & Co.
Messerschmitt-Bolkow-Blohm Gmbh
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