Title:
LENSES FOR COSINE CUBED, TYPICAL BATWING, FLAT BATWING DISTRIBUTIONS
Document Type and Number:
WIPO Patent Application WO/2015/012984
Kind Code:
A3
Abstract:
A lighting apparatus with uniform illumination distribution, according to various embodiments, can include a lens for area lighting. In one embodiment, the lens comprises a plurality of cross-sections identified by a thickness ratio defined at different angles. The thickness ratio is determined relative to the thickness of the cross-section defined at a center angle of the lens. In another embodiment, the lighting apparatus with uniform illumination distribution includes a lens having an inner surface and an outer surface. A profile of the inner surface and the outer surface is composed of a plurality of piecewise circular arcs defined with radii and circle centers. The lens is formed as a complex curve lens by joining the piecewise circular arcs of the inner surface and the outer surface.
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Inventors:
CHINNIAH JEYACHANDRABOSE (US)
ALLEN GARY (US)
YODER BENJAMIN (US)
ALLEN GARY (US)
YODER BENJAMIN (US)
Application Number:
PCT/US2014/043628
Publication Date:
April 30, 2015
Filing Date:
June 23, 2014
Export Citation:
Assignee:
GE LIGHTING SOLUTIONS LLC (US)
International Classes:
G02B19/00; B29D11/00; F21V5/04
Foreign References:
| US20070201225A1 | 2007-08-30 | |||
| US20030099115A1 | 2003-05-29 | |||
| US6273596B1 | 2001-08-14 | |||
| US20120287375A1 | 2012-11-15 | |||
| US3833802A | 1974-09-03 | |||
| US20080100773A1 | 2008-05-01 |
Other References:
HYUNGJUN PARK: "Optimal Single Biarc Fitting and its Applications", COMPUTER-AIDED DESIGN AND APPLICATIONS, vol. 1, no. 1-4, 31 December 2004 (2004-12-31), pages 187 - 195, XP055173363, DOI: 10.1080/16864360.2004.10738258
Attorney, Agent or Firm:
DIMAURO, Peter T. et al. (Global Patent Operation3135 Easton Turnpik, Fairfield CT, US)
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