Collecting lens

Details Collecting lens Collecting lens

2008-09-29

2010-11-30

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S796000, C359S793000, C362S311020

Reexamination Certificate

active

07843654

ABSTRACT:
A system and method for collimating light emitted from a light source, such as a light-emitting diode (LED), is provided. The system and method includes two lenses, both lenses having a positive power for converging the light rays. In one example, the first lens is a hemispherical ball lens and the second lens is configured such that one surface conforms to the exiting surface of the first lens. The exiting surface of the second lens may be, for example, a Fresnel lens or an aspherical lens. In another example, the first lens may be a hemispherical or a hyperhemispherical ball lens. The second lens has an outer circumference having two aspherical surfaces. The inner portion of the second lens is in direct contact with the first lens. This configuration creates a dual-channel collimator.

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patent: 2005/0179041 (2005-08-01), Harbers et al.
patent: 2007/0152231 (2007-07-01), Destain

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