Overhead projector for LCD panel

Details Overhead projector for LCD panel Overhead projector for LCD panel

1993-03-02

1994-04-12

Cuchlinski, Jr., William A.

Optics: image projectors

Miscellaneous

353DIG3, 353119, G03B 2100

Patent

active

053029852

ABSTRACT:
An overhead projector (OHP) presentation system uses a liquid crystal display (LCD) panel to project electronically stored graphic images. The OHP preferably includes an integrated computer having a plurality of output ports for connection to various peripheral devices. A novel interface card is also used to provide electrical connections between the computer and the LCD panel, providing the further benefit of aligning the transmissive portion of the panel with the stage of the OHP. The LCD panel may be designed to swing horizontally into the optical path. This may be accomplished by providing a sliding drawer which inserts the panel within the body of the OHP, or by pivotally attaching the panel to the stage of the OHP.

REFERENCES:
patent: 4880303 (1989-11-01), Grunwald
patent: 4882599 (1989-11-01), Grunwald
patent: 4944578 (1990-07-01), Denison
patent: 4953971 (1990-09-01), Highfill
patent: 5016984 (1991-05-01), Fergason
patent: 5120125 (1992-06-01), Behr
patent: 5159363 (1992-10-01), Brauning
patent: 5187510 (1993-02-01), Vogeley et al.

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