Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Patent
1988-11-10
1992-06-30
Dzierzynski, Paul M.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
359 36, 359 40, G02B 2700, G02F 11335
Patent
active
051268825
ABSTRACT:
A plane light source unit is provided which comprises a first element having a light incident face at least at one side end thereof and a first light emitting surface extending perpendicularly to the light incident face, the first element further having a reflecting layer provided on a surface thereof opposite to the first light emitting surface, and a second element having a light incident surface which receives the light emitted by the first element and a second light emitting surface through which light is emitted in a predetermined direction, the first light emitting surface and/or the opposite surface of the first element having a directive function to cause incident light through the light incident face to emit through the first light emitting surface in a direction oblique to the direction of the light, the second element having a large number of prism units formed on the light incident surface thereof. The plane light source unit is advantageously used as a backlighting means for a liquid crystal display device or the like.
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IBM Technical Disclosure Bulletin, vol. 29, No. 11, Apr. 1987, pp. 4838-4839, New York, N.Y., "Backlighting for liquid crystal display".
Chiba Ithussei
Oe Makoto
Dang Hung Xuan
Dzierzynski Paul M.
Mitsubishi Rayon Co. Ltd.
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