Thin stepped tulip lens

Details Thin stepped tulip lens Thin stepped tulip lens

2009-09-15

2011-11-29

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

With multipart element

C362S327000, C362S337000

Reexamination Certificate

active

08068288

ABSTRACT:
A secondary illumination optic, principally directed toward managing light from light emitting diode illumination sources having a primary optical element, is provided comprising a lens combination arranged along the optical axis, a central convex lens portion being centrally positioned on the optical axis, and a surrounding total internal reflection lens portion, with the central optic having a first and incident surface and a second and exiting surface, both comprising refractive faceted optical lens elements, and the total internal reflection optic lens portion having a cylinder shaped aspheric first and incident surface, a second and internal total reflection surface, and a third and exiting surface comprising refractive faceted optic lens elements, wherein, being constructed of resin having optical characteristic, the central and total internal reflection lens portions are molded as an integrated assembly from an optical resin providing a stepped tulip type lens, thinner and higher yielding than prior art lenses.

REFERENCES:
patent: 6755556 (2004-06-01), Gasquet et al.

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