Illumination – Revolving
Patent
1993-05-21
1994-04-26
Cole, Richard R.
Illumination
Revolving
65 2, 65 42, F21V 800
Patent
active
053072456
ABSTRACT:
An improved fiber optic backlighting panel provides uniform and increased background illumination in devices, such as rubber keypads, membrane switches, liquid crystal displays, rigid panels or the like. The fiber optic panel comprises a light source and a layer of optical fibers arranged adjacent each other, which transmit light to different locations throughout the device, thereby providing efficient background illumination relative to the amount of light beamed in. The optical fibers are selectively terminated at these locations by forming a series of angular cuts through the layer of optical fibers with a laser, according to a predetermined geometric zig-zag or sawtooth pattern stored in a computer memory. The zig-zag pattern extends across the entire length and width of the panel such that each optical fiber is cut only once to provide increased and consistent illumination throughout the device. In one specific embodiment, for application in liquid crystal displays, a layer of foam is used to diffuse the light to provide uniform illumination.
REFERENCES:
patent: 2909857 (1959-10-01), Wilson
patent: 3247755 (1966-04-01), Siegmund
patent: 3592199 (1971-07-01), Ostensen
patent: 3692383 (1972-09-01), Herod et al.
patent: 3829675 (1974-08-01), Mariani
patent: 3886544 (1975-05-01), Narodny
patent: 4052120 (1977-10-01), Sick et al.
patent: 4124879 (1978-11-01), Schoemer
patent: 4128332 (1978-12-01), Rowe
patent: 4139261 (1979-02-01), Hilsum
patent: 4141058 (1979-02-01), Mizohata et al.
patent: 4141161 (1979-02-01), Hiscock et al.
patent: 4142312 (1979-03-01), Stokes
patent: 4172631 (1979-10-01), Yevick
patent: 4173390 (1979-11-01), Kach
patent: 4177501 (1979-12-01), Karlin
patent: 4195907 (1980-04-01), Zamja et al.
patent: 4196962 (1980-04-01), Sick
patent: 4214391 (1980-07-01), Angst
patent: 4234907 (1980-11-01), Daniel
patent: 4389085 (1983-06-01), Mori
patent: 4389698 (1983-06-01), Cibie
patent: 4420740 (1983-12-01), Brown et al.
patent: 4422719 (1983-12-01), Orcutt
patent: 4459642 (1984-07-01), Mori
patent: 4471412 (1984-09-01), Mori
patent: 4519017 (1985-05-01), Daniel
patent: 4535396 (1985-08-01), Guthrie
patent: 4544990 (1985-10-01), Wieselman et al.
patent: 4555694 (1985-11-01), Yanagishima et al.
patent: 4559583 (1985-12-01), Ku
patent: 4561043 (1985-12-01), Thompson
patent: 4585298 (1986-04-01), Mori
patent: 4636028 (1987-01-01), Mori
patent: 4640592 (1987-02-01), Nishimura et al.
patent: 4670633 (1987-06-01), Kaiwa et al.
patent: 4673918 (1987-06-01), Adler et al.
patent: 4678279 (1987-07-01), Mori
patent: 4685766 (1987-08-01), Nishimura et al.
patent: 4693552 (1987-09-01), Jeskey
patent: 4699448 (1987-10-01), Mori
patent: 4717226 (1988-01-01), Mori
patent: 4726641 (1988-02-01), Mori
patent: 4730883 (1988-03-01), Mori
patent: 4732442 (1988-03-01), Mori
patent: 4733332 (1988-03-01), Yamashita et al.
patent: 4747648 (1988-05-01), Gilliland, III
patent: 4761047 (1988-08-01), Mori
patent: 4763984 (1988-08-01), Awai et al.
patent: 4765701 (1988-08-01), Cheslak
patent: 4779166 (1988-10-01), Tanaka et al.
patent: 4786139 (1988-11-01), Sedlmayr
patent: 4822123 (1989-04-01), Mori
patent: 4830899 (1989-05-01), Nakahashi et al.
patent: 4845596 (1989-07-01), Mouissie
patent: 4883333 (1989-11-01), Yanez
patent: 4952022 (1990-08-01), Genovese
patent: 4977487 (1990-12-01), Okano
patent: 5005108 (1991-04-01), Pristash et al.
patent: 5036435 (1991-07-01), Tokuda et al.
Halter Roger F.
Myers J. Michael
Cole Richard R.
Heyman L.
Poly-Optical Products, Inc.
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