Total internal reflection micro lens array

Details Total internal reflection micro lens array Total internal reflection micro lens array

2006-09-18

2009-06-16

Spector, David N (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C362S337000, C362S339000

Reexamination Certificate

active

07548376

ABSTRACT:
The invention relates to a total internal reflection micro lens array for a wide-angle lighting system. The micro lens array includes a plurality of Fresnel lens structures formed on a same optical incidence surface. Each of the Fresnel lens structure includes a plurality of grooves, each having a reflecting surface and a refractive surface. Incoming radiation incident through the incidence surface of the lens structure is internally totally reflected by the reflecting surface, refracted by the refractive surface and exits the lens structure.

REFERENCES:
patent: 3578841 (1971-05-01), Elmer
patent: 5577492 (1996-11-01), Parkyn et al.
patent: 6456437 (2002-09-01), Lea et al.
patent: 7140735 (2006-11-01), Peterson et al.
patent: 7230758 (2007-06-01), Huang
patent: 7350925 (2008-04-01), Engstrom
patent: 2002/0034710 (2002-03-01), Morris et al.
patent: 2008/0204901 (2008-08-01), Amano et al.

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