Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1996-07-02
1999-04-27
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349 66, G02F 11335
Patent
active
058971840
ABSTRACT:
A reduced-thickness backlighter for an autostereoscopic display is disclosed having a lightguide and at least one light source parallel to an edge of the lightguide so as to be substantially coplanar with the lightguide. The lightguide is provided with a first surface which has a plurality of reflective linear regions, such as elongated grooves or glossy lines, parallel to the illuminated edge of the lightguide. Preferably the lightguide further has a second surface which has a plurality of lenticular lenses for reimaging the reflected light from the linear regions into a series of thin vertical lines outside the guide. Because of the reduced thickness of the backlighter system, autostereoscopic viewing is enabled in applications requiring thin backlighter systems. In addition to taking up less space, the reduced-thickness backlighter uses less lamps and less power. For accommodating 2-D applications, a 2-D diffuser plate or a 2-D lightguide parallel to the 3-D backlighter is disclosed for switching back and forth between 3-D viewing and 2-D viewing.
REFERENCES:
patent: 1515427 (1924-11-01), Bouin
patent: 2522812 (1950-09-01), Bonnett
patent: 3184630 (1965-05-01), Geer
patent: 3365350 (1968-01-01), Cahn
patent: 3688045 (1972-08-01), Onkoshi
patent: 3893748 (1975-07-01), De Palma et al.
patent: 4717949 (1988-01-01), Eichenlaub
patent: 4772094 (1988-09-01), Sherman
patent: 4807965 (1989-02-01), Garakani
patent: 4829365 (1989-05-01), Eichenlaub
patent: 5036385 (1991-07-01), Eichenlaub
patent: 5040878 (1991-08-01), Eichenlaub
patent: 5126882 (1992-06-01), Oe et al.
patent: 5339179 (1994-08-01), Rudisill et al.
patent: 5359691 (1994-10-01), Tai et al.
patent: 5457574 (1995-10-01), Eichenlaub
patent: 5485291 (1996-01-01), Qiao et al.
patent: 5712694 (1998-01-01), Taira et al.
Eichenlaub Jesse B
Gruhlke Russell W
Dimension Technologies Inc.
Dudek James
Sikes William L.
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