Optical waveguides – Noncyclindrical or nonplanar shaped waveguide
Patent
1992-10-08
1995-02-14
Ullah, Akm E.
Optical waveguides
Noncyclindrical or nonplanar shaped waveguide
362 32, G02B 604
Patent
active
053902769
ABSTRACT:
An assembly for backlighting a liquid crystal display is disclosed herein along with the liquid crystal display itself and a specific light polarization arrangement. The assembly for backlighting the liquid crystal display includes a backlighting light pipe into which light is directed in a particular manner and a specifically configured arrangement of immediately adjacent microprisms which cooperate with the backlighting light pipe for reflecting light within the ladder upwards through one of its surfaces in a generally collimated manner. The liquid crystal display backlighting assembly is also disclosed including a specifically designed arrangement for collimating the light directed into the light pipe such that the light exiting the light pipe does so on a more collimated manner.
REFERENCES:
patent: 4917465 (1990-04-01), Conner et al.
patent: 5050946 (1991-09-01), Hathaway et al.
patent: 5187765 (1993-02-01), Muehlemann et al.
patent: 5202950 (1993-04-01), Arego et al.
patent: 5226105 (1993-07-01), Myers
"Retroreflecting Sheet Polarizer", M. F. Weber, SID 92 Digest, pp. 427-429.
Chen Zhan
Tai Chen-Yu
Zou Han
Briteview Technologies
Ullah Akm E.
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