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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.

Inventors:
CHINNIAH, Jeyachandrabose (1975 Noble Rd, East Cleveland, OH, 44112, US)
ALLEN, Gary (1975 Noble Road, East Cleveland, OH, 44112, US)
YODER, Benjamin (1975 Noble Road, East Cleveland, OH, 44112, US)
Application Number:
US2014/043628
Publication Date:
April 30, 2015
Filing Date:
June 23, 2014
Export Citation:
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Assignee:
GE LIGHTING SOLUTIONS, LLC (1975 Noble Road, Bldg 338,Nela Par, East Cleveland OH, 44112, US)
International Classes:
G02B19/00; B29D11/00; F21V5/04
Foreign References:
US20070201225A12007-08-30
US20030099115A12003-05-29
US6273596B12001-08-14
US20120287375A12012-11-15
US3833802A1974-09-03
US20080100773A12008-05-01
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. (General Electric Company, Global Patent Operation3135 Easton Turnpik, Fairfield CT, 06828, US)
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