Method and apparatus utilizing waveguide and polarized light for

Details Method and apparatus utilizing waveguide and polarized light for Method and apparatus utilizing waveguide and polarized light for

1986-05-14

1989-04-18

Miller, Stanley D.

Illumination

Supported by vehicle structure

Condition responsive

350334, 350339R, 350338, 362 31, G02F 113, F21V 704

Patent

active

048221457

ABSTRACT:
A visual display device is disclosed in which a liquid crystal cell is adjacent a light waveguide. Electrodes in the liquid crystal cell alter the dielectric constant therein to change the critical angle defined by the two media of the cell and the waveguide to regulate the amount and location of light which may escape from the waveguide. Color display can be obtained with visible light by providing a dyed layer and with ultraviolet light by providing colored ultraviolet phosphors. A shaped mirror or contoured reflective layer is provided with a visible light device to cause the displayed light to scatter in desired directions.

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patent: 4385805 (1983-05-01), Channin
patent: 4642736 (1987-02-01), Masuzawa et al.
R. F. Bush & P. E. Seiden, "Liquid Crystal Display Device", IBM Technical Disclosure Bulletin, vol. 14, No. 1, Jun. 1971.
G. Baur & W. Creubel, "Fluorescence-Activated Liquid Crystal Display", Applied Physics Letters, vol. 31, No. 1, Jul. 1st, 1977.

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