Light emitting module and light receiving module

Details Light emitting module and light receiving module Light emitting module and light receiving module

2007-11-02

2010-06-08

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

With multipart element

Reexamination Certificate

active

07733580

ABSTRACT:
A plurality of first refraction surfaces121and a plurality of second refraction surfaces122are alternately provided on an emission surface of a lens element120so as to form concentric circles each having an optical axis113at the center thereof, and having diameters different from each other, and a light reflected by a plurality of reflection surfaces123provided on an incident surface of the lens element so as to form concentric circuits each having the optical axis113at the center thereof and having diameters different from each other, is refracted and emitted by the plurality of second refraction surfaces122at desired angles. Therefore, it is possible to enhance efficiency and an emission intensity, and reduce variations in brightness of an emitted light without increasing the diameter of the lens element120, thereby realizing a light emitting module100enabling advantageous performance.

REFERENCES:
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patent: 7160522 (2007-01-01), Minano Dominguez et al.
patent: 2003/0147244 (2003-08-01), Tenmyo
patent: 2006/0256433 (2006-11-01), Yoshikawa et al.
patent: 03-060080 (1991-03-01), None
patent: 2002-221605 (2002-08-01), None
patent: 2005-049367 (2005-02-01), None
patent: 2006-177999 (2006-07-01), None

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