Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Reexamination Certificate
2006-09-19
2006-09-19
Nguyen, Dung T. (Department: 2871)
Liquid crystal cells, elements and systems
Liquid crystal system
Projector including liquid crystal cell
C349S015000, C349S057000, C349S058000, C349S064000, C349S065000, C349S068000, C349S070000, C349S077000, C349S086000, C349S096000, C359S465000, C353S122000
Reexamination Certificate
active
07110052
ABSTRACT:
A reconfigurable backlighting construction for use in portable computer-based systems having direct and projection viewing modes of operation is provided. These computer-based systems are capable of selectively displaying color video images on an actively driven display surface, or projecting such video images onto a wall surface or projection screen without the need for a bulky overhead projector, required by all prior art systems. These computer-based systems can be easily reconfigured for projection viewing without physical removal of the light guiding panel and its light diffusing structures. A portable light projection accessory device is also provided for use with the portable computer-based systems of the present invention. The portable light projection device has first and second housing portions that are interconnected by a foldable structure that permits the first and second housing portions to be selectively reconfigured for simple trouble-free use during the projection viewing mode of operation, and for compact storage during the direct viewing mode of operation.
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Faris Sadeg M.
Tung Carl
Crispino Ralph J.
Duong Tai
Nguyen Dung T.
Perkowski Esq. P.C. Thomas J.
Reveo Inc.
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