Patent ID: 6836490
Filing Date: 2004-12-28
Classification: H01S

Abstract:
A light-emitting module comprising:a semiconductor light-emitting device for emitting light of a predetermined magnitude under a predetermined temperature; a first optical detector for outputting a first output, said first optical detector optically coupling to said semiconductor light-emitting device; a second optical detector for outputting a second output, said second optical detector optically coupling to said semiconductor light-emitting device; and an etalon device having a first surface for optically coupling to said semiconductor light-emitting device and a second surface for optically coupling to said first optical detector and said second detector, said etalon device having a first portion with a first axis connecting said semiconductor light-emitting device to said first optical detector and a second portion with a second axis connecting said semiconductor device to said second detector, wherein said first surface of said second portion and said second surface of said second portion of said etalon device have an anti-reflection coating.