Optical: systems and elements – Lens – With support
Patent
1991-08-21
1992-12-22
Fields, Carolyn E.
Optical: systems and elements
Lens
With support
359731, 359859, 359852, 362157, 250216, H01J 314
Patent
active
051738104
ABSTRACT:
The present invention is directed to a light transmitting lens for transmitting substantially all of the light emitted by a light source, such as a light emitting diode. The light transmitting lens includes a light transmitting structure having an outer surface disposed between first and second sides. Located on the first side is a tubular concave surface, preferably terminated by a hemispherical convex lens. Located on the second side is an opening, preferably a spherical surface. Located within the opening, preferably at the center of the spherical surface, is the light source, preferably a light emitting diode. Some of the light emitted by the light source is captured by the convex lens and transmitted thereby. The light emitted by the light source but not captured by the convex lens is reflected off the outer surface of the structure and thereby transmitted. The outer surface of the light transmitting structure is preferably a substantially conical section having either a substantially parabolic or elliptical shape. The light transmitting lens of the present invention transmits at least three times more light emitted by the light source than the conventional convex lens arrangement of the prior art, thereby producing a given amount of illumination a farther distance, relative to the conventional convex lens arrangement.
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patent: 5062899 (1991-11-01), Kruer
Aisens Co., Ltd.
Dunn Drew A.
Fields Carolyn E.
Lipsitz Barry R.
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