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Class Information
Number: 353/76
Name: Optics: image projectors > Cabinet encloses projector and one side of screen > Focus or variable magnification
Description: Subject matter including adjustable structure to focus the image of the object on the screen or to increase or decrease the size of the image relative to the size of the object.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7470030 |
Cabinet-surface-mounted projection lens and methods |
Dec. 30, 2008 |
| 7365907 |
Rear projection image display apparatus |
Apr. 29, 2008 |
| 7347566 |
Projection lens unit and rear projection type image display system |
Mar. 25, 2008 |
| 7261420 |
Projection optical unit and projection image display apparatus |
Aug. 28, 2007 |
| 7256951 |
Light guide display with protective layer |
Aug. 14, 2007 |
| 7244030 |
Rear projection type image display device |
Jul. 17, 2007 |
| 7195358 |
Rear projection type image display device |
Mar. 27, 2007 |
| 7172292 |
Projection lens unit and rear projection type image display system |
Feb. 6, 2007 |
| 7159988 |
Projection optical unit and projection image display apparatus |
Jan. 9, 2007 |
| 6869187 |
Projection type display apparatus |
Mar. 22, 2005 |
| 6837584 |
Peak brightness improvement for LC/DLP based RPTV |
Jan. 4, 2005 |
| 6808271 |
Projection type display apparatus |
Oct. 26, 2004 |
| 6702445 |
Image projector forming scrolling image |
Mar. 9, 2004 |
| 6616283 |
Projector |
Sep. 9, 2003 |
| 6530666 |
Focusing projection displays |
Mar. 11, 2003 |
| 6511186 |
Focus and aim device and method for image projection |
Jan. 28, 2003 |
| 5690772 |
Method for mass-producing eccentric Fresnel lens sheets |
Nov. 25, 1997 |
| 5663762 |
Electronic viewer automatically adjusting magnification of a film image in accordance with position of the film image |
Sep. 2, 1997 |
| 5637359 |
Plastic substrate liquid crystal display device, method of making, and product produced by the method |
Jun. 10, 1997 |
| 5307098 |
Projection inspecting machine |
Apr. 26, 1994 |
| 5119239 |
Magnifier apparatus and method for hand held video display |
Jun. 2, 1992 |
| 5078487 |
Projecting apparatus |
Jan. 7, 1992 |
| 5005967 |
Microfilm image processing apparatus having automatic focus control capabilities |
Apr. 9, 1991 |
| 4909623 |
"Microfilm image processing apparatus" |
Mar. 20, 1990 |
| 4902117 |
Clothing image mirror projection system |
Feb. 20, 1990 |
| 4746208 |
Method and an apparatus for expanding magnification range of a photographic projector |
May. 24, 1988 |
| 4730919 |
Slide viewer |
Mar. 15, 1988 |
| 4605294 |
Composite optical display method and related apparatus |
Aug. 12, 1986 |
| 4410248 |
Optical and focusing arrangement for microfiche reader |
Oct. 18, 1983 |
| 4240721 |
Cooking with recipes through improved viewing machine or wall screen projection |
Dec. 23, 1980 |
| 4221473 |
Image expander for rear-screen projectors |
Sep. 9, 1980 |
| 4146315 |
Lens moving device for opaque reader |
Mar. 27, 1979 |
| 4139283 |
Rear projection viewer having automatically erecting auxiliary screen |
Feb. 13, 1979 |
| 4136935 |
Rear projection viewer having auxiliary viewing screen |
Jan. 30, 1979 |
| 4119372 |
Microfiche inspection apparatus |
Oct. 10, 1978 |
| 4094598 |
Micro display with magnifier |
Jun. 13, 1978 |
| 4050799 |
Microform reader |
Sep. 27, 1977 |
| 3951536 |
Film projection system |
Apr. 20, 1976 |
| 3947188 |
Variable conjugate optical system |
Mar. 30, 1976 |
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