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Class Information
Number: 349/6
Name: Liquid crystal cells, elements and systems > Liquid crystal system > Projector including liquid crystal cell (s) > Overhead projector
Description: Subject matter wherein the direction of the light passing through the liquid crystal cell (or cells) is in the vertical direction and the projection of the light is in a direction substantially perpendicular thereto.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7528892 |
Projector device |
May. 5, 2009 |
| 7441905 |
Optical scanner |
Oct. 28, 2008 |
| 7382335 |
Video information display system and display apparatus applicable to the same |
Jun. 3, 2008 |
| 7338176 |
Elevator installation with information representation on a shaft door |
Mar. 4, 2008 |
| 7118231 |
Video projection apparatus |
Oct. 10, 2006 |
| 6945655 |
Convection cooled light projector |
Sep. 20, 2005 |
| 6947025 |
Lighting apparatus and projection type display, and driving method therefore |
Sep. 20, 2005 |
| 6913359 |
Projection method with real object projector |
Jul. 5, 2005 |
| 6912020 |
Electro-optical apparatus, electronic device, substrate for use in an electro-optical apparatus, method of producing a substrate for use in an electro-optical apparatus, and light shielding fi |
Jun. 28, 2005 |
| 6893132 |
Camera-assisted presentation system |
May. 17, 2005 |
| 6851811 |
Projector including a relay optical system |
Feb. 8, 2005 |
| 6848794 |
Reflecting optical element, optical system and optical apparatus using reflecting optical element, projection type image display apparatus, and method for fabricating reflecting optical elemen |
Feb. 1, 2005 |
| 6814447 |
Real object projector |
Nov. 9, 2004 |
| 6811265 |
Retractable image projecting system |
Nov. 2, 2004 |
| 6805447 |
Rear projection display device and projecting method used for the same |
Oct. 19, 2004 |
| 6795132 |
Liquid crystal projection display |
Sep. 21, 2004 |
| 6783243 |
Overhead projector |
Aug. 31, 2004 |
| 6734838 |
Enhanced resolution for image generation |
May. 11, 2004 |
| 6674426 |
Augmenting and not replacing paper based work practice via multi-modal interaction |
Jan. 6, 2004 |
| 6609797 |
Projector with adjustably positioned image plate |
Aug. 26, 2003 |
| 6568816 |
Projection system and method for using a single light source to generate multiple images to be edge blended for arrayed or tiled display |
May. 27, 2003 |
| 6556181 |
Matrix driven liquid crystal display module system apparatus and method |
Apr. 29, 2003 |
| 6550922 |
Audio-video recording of overhead projector based presentations |
Apr. 22, 2003 |
| 6552850 |
Device, method, and system of display for controlled viewing |
Apr. 22, 2003 |
| 6542204 |
Display optical system |
Apr. 1, 2003 |
| 6474819 |
Combination overhead projector and electronic display device |
Nov. 5, 2002 |
| 6361171 |
Projector with adjustably positioned image plate |
Mar. 26, 2002 |
| 6345896 |
Projector capable of easily replacing and efficiently cooling light source |
Feb. 12, 2002 |
| 6201585 |
Electronic apparatus having thin film transistors |
Mar. 13, 2001 |
| 6185016 |
System for generating an image |
Feb. 6, 2001 |
| 6144360 |
Flat panel display system having direct monitoring and overhead projection monitoring capability |
Nov. 7, 2000 |
| 6144420 |
Reflection type projector with four imaging units and a color wheel |
Nov. 7, 2000 |
| 6057894 |
Projection type liquid crystal display having a dichroic prism and polarizing and phase shifting properties |
May. 2, 2000 |
| RE36654 |
Stacked LCD color display |
Apr. 11, 2000 |
| 5999335 |
Projecting apparatus |
Dec. 7, 1999 |
| 5889614 |
Presentation system with overhead projector |
Mar. 30, 1999 |
| 5768095 |
Portable computer having overhead projection capability and back lid portion with switch controlling backlight |
Jun. 16, 1998 |
| 5748183 |
Information processing apparatus |
May. 5, 1998 |
| 5696529 |
Flat panel monitor combining direct view with overhead projection capability |
Dec. 9, 1997 |
| 5404185 |
Liquid crystal display for projection systems |
Apr. 4, 1995 |
| 5359441 |
Reflection type liquid crystal display apparatus having a reflective pixel electrode with an elongated window over a photoconductive element |
Oct. 25, 1994 |
| 5333072 |
Reflective liquid crystal display overhead projection system using a reflective linear polarizer and a fresnel lens |
Jul. 26, 1994 |
| 5325137 |
Overhead projector with a spatial light modulator |
Jun. 28, 1994 |
| 5300928 |
Liquid crystal color display device |
Apr. 5, 1994 |
| 5299039 |
Stacked display panel construction and method of aligning pixel elements thereof |
Mar. 29, 1994 |
| 5214457 |
Reflective overhead projector with light-to-light converter |
May. 25, 1993 |
| 5206673 |
Reflection type overhead projector |
Apr. 27, 1993 |
| 5157526 |
Unabsorbing type polarizer, method for manufacturing the same, polarized light source using the same, and apparatus for liquid crystal display using the same |
Oct. 20, 1992 |
| 5089810 |
Stacked display panel construction and method of making same |
Feb. 18, 1992 |
| 5076543 |
Projection pad using liquid crystal panel |
Dec. 31, 1991 |
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