Optical: systems and elements – Lens – With reflecting element
Patent
1998-08-12
2000-08-01
Sugarman, Scott J.
Optical: systems and elements
Lens
With reflecting element
362459, 362517, 362520, G02B 1700, F21V 500, F21V 700
Patent
active
060975490
ABSTRACT:
A bireflective lens element comprising a light input surface and a direct transmitting area communicating with the light input surface. A light source is disposed adjacent to the light input surface for projecting light into the lens element to create a light emitting assembly. A first portion of input light is directed through the lens elements in a first predetermined pattern. A primary and a secondary reflecting area is between the light input surface and an illumination surface surrounding the direct light transmitting area. A second portion of input light is redirected through the lens element to the illumination surface in a second predetermined pattern. Specifically, the secondary reflective area has a plurality of extracting facets extending inwardly into the secondary reflective area for intercepting light from the primary reflective area. The first predetermined pattern combines with the second predetermined pattern to output light from the illumination surface in a substantially uniform pattern covering the broad area of the lens element.
REFERENCES:
patent: 4037096 (1977-07-01), Brendgord et al.
patent: 5046805 (1991-09-01), Simon
patent: 5197792 (1993-03-01), Jiao et al.
patent: 5365412 (1994-11-01), Koppolu et al.
patent: 5434754 (1995-07-01), Li et al.
patent: 5490049 (1996-02-01), Montalan et al.
patent: 5594424 (1997-01-01), Louy et al.
patent: 5676453 (1997-10-01), Parkyn, Jr. et al.
TIR Technologies, Inc., "Linear TIR Lenses For Fluorescent Light Sources", 1994, pp. 1-9.
Cote Marie
Griffin Joseph A.
Jenkins David
Pagano Robert
Breault Research Organization, Inc.
Sugarman Scott J.
LandOfFree
Bireflective lens element does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bireflective lens element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bireflective lens element will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-669680