Patent ID: 7042646
Filing Date: 2006-05-09
Classification: G02B,H01L

Abstract:
1. An infrared device comprising: an optical train for receiving an incident radiation into said device; a focal plane array for receiving said incident radiation from said optical train; an optical power limiter having a first surface and an opposing second surface, said second surface facing said focal plane array; said optical power limiter being positioned between said optical train and said focal plane array, said optical train focusing said incident radiation into an intermediate focal plane located within said optical power limiter; a means for re-focusing incident radiation, having a plurality of microlenses integral to said optical power limiter and formed on said second surface, re-focuses said incident radiation from said intermediate focal plane onto a final focal plane that is coincident with said focal plane array; said focal plane array includes an array of detector elements; and each of said plurality of microlenses corresponds to a respective detector element.