Patent ID: 8164045
Filing Date: 2012-04-24
Classification: G02B,H01L

Abstract:
1. An optical system for controlling light propagation along a light path comprising: a first optical element formed of a first light transmitting material having a first index of refraction, said first optical element comprising a first boundary arranged to intersect the light path, said first boundary having a surface finish effective to scatter light impinging on the first boundary; a second optical element comprising a second boundary arranged to intersect the light path, said second boundary arranged to face the first boundary and to be separated from the first boundary by a gap that intersects the light path; and an index matching region occupying a portion of the gap, said index matching region comprising a second light transmitting material that having a matching index of refraction after being dispensed, said index matching region arranged to contact a first portion of the first boundary and contact a second portion of the second boundary such that light in the first optical element directed toward the first boundary that is within the first portion propagates to the second portion, and light directed toward the first boundary that is not within the first portion is scattered.