Illumination – Curvilinear light source
Patent
1994-06-17
1996-03-26
Lazarus, Ira S.
Illumination
Curvilinear light source
362 84, 362332, 362339, F21S 500, F21V 502, F21V 916
Patent
active
055026265
ABSTRACT:
Fluorescent lamp energy efficiency is improved by providing geometric formations on the surface to which the phosphor coating is applied. By such geometric formations, a greater oblique surface area is available for receiving a desirably thin phosphor coating such that greater and more uniform visible light output is obtained from the device for a given energy input, i.e., greater relative to that possible with smooth surfaces receiving the phosphor coating. In the illustrated embodiment, the interior surfaces of an enclosure include V-shaped groove formations for increasing the interior surface area and establishing oblique orientation relative to approaching UV light rays. A UV light source is placed within the enclosure for excitation of a phosphor coating applied to the interior surfaces of the enclosure. The invention is particularly well adapted for use as a backlighting system in an active matrix liquid crystal display device.
REFERENCES:
patent: Re33987 (1992-07-01), Suzawa
patent: 1313622 (1919-08-01), Dodds
patent: 2213245 (1936-12-01), Germer
patent: 2317265 (1940-07-01), Foerste et al.
patent: 2702862 (1955-02-01), Finney
patent: 3098945 (1963-07-01), Lemmers
patent: 3157362 (1964-11-01), Waly
patent: 3988633 (1976-10-01), Shurgan et al.
patent: 4099090 (1978-07-01), Corth et al.
patent: 4236096 (1980-11-01), Tiemann
patent: 4264147 (1981-04-01), Baur et al.
patent: 4500173 (1985-02-01), Leibowitz et al.
patent: 4546417 (1985-10-01), Watts
patent: 4641925 (1987-02-01), Gasparaitis et al.
patent: 4736134 (1988-04-01), Lagushenko et al.
patent: 4744012 (1988-05-01), Bergkvist
patent: 4799050 (1989-01-01), Prince et al.
patent: 4822617 (1989-11-01), Vriens
patent: 4825125 (1989-04-01), Lagushenko et al.
patent: 4841155 (1989-06-01), Ushida et al.
patent: 4845408 (1989-07-01), Pai
patent: 4874228 (1989-10-01), Aho et al.
patent: 4976514 (1990-12-01), Murata et al.
patent: 4989956 (1991-02-01), Wu et al.
patent: 5021931 (1991-06-01), Matsui et al.
patent: 5211467 (1993-05-01), Seder
Armstrong James B.
Lengyel J. Michael
Champion Ronald E.
Honeywell Inc.
Johnson Kenneth J.
Lazarus Ira S.
Quach Y.
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