Optical system with reduced back reflection

Details Optical system with reduced back reflection Optical system with reduced back reflection

2006-12-12

2006-12-12

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S015000, C385S031000, C385S038000, C385S039000, C250S227110, C250S227200, C250S227280

Reexamination Certificate

active

07149383

ABSTRACT:
An optical system is adapted to produce reduced back reflection from a receiving detector back to a light source for increased system performance. The system may optically condition light signals from the light source for projection onto the detector. The conditioning may result in a light spot on the detector that has an annular intensity distribution or profile. The annular distribution may be attained in any number of ways including providing a slope discontinuity in the lens surface, providing an ax icon lens function, and/or providing a defocused light spot on the detector surface.

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