Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03B - Apparatus or arrangements for taking photographs or for projecting or viewing them; Apparatus or arrangements employing analogous techniques using waves other than optical waves; Accessories therefor › G03B 21 - Projectors or projection-type viewers; Accessories therefor
Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
11/1992
11/25/1992EP0325648B1 Projection screen
11/25/1992CA2043270A1 Illumination for transmissive displays
11/24/1992US5166824 Rear projection screen and manufacturing method therefor as well as molding die for shaping rear projection screen, overhead projector and projection television set
11/24/1992CA2069064A1 Method of and arrangement for reenlargement of micro-filmed originals
11/19/1992EP0514045A1 Rear projection facetted dome
11/17/1992US5165013 3-D stereo pen plotter
11/17/1992US5164821 Image projection system
11/17/1992US5163750 Light apparatus
11/17/1992CA1310212C Catadioptric projection lantern
11/11/1992EP0512893A1 Illuminator for projector
11/11/1992CN2121706U Scr voltage projection apparatus
11/10/1992US5162844 Image projection apparatus
11/10/1992US5162827 One piece transparency mount with spring transparency restraint
11/10/1992US5162160 Fluorescent screen
11/04/1992EP0511829A2 Improvements in high intensity lighting projectors
11/04/1992EP0511721A2 Front projection screen with reflected light concentrating lens array
11/03/1992US5160958 Image projecting apparatus
11/03/1992US5160951 Rear view projection system
11/03/1992US5160950 Image projecting apparatus furnished with image rotating mechanism
10/1992
10/28/1992CN2120350U Electric controlling apparatus for screen
10/28/1992CN2120349U 16mm 350v improved xenon lamp projector
10/27/1992US5159363 Optical system
10/27/1992US5159362 Dimensional transformation system and related method of creating visual effects
10/21/1992CN2119670U Non-transparent slide projector
10/14/1992EP0508763A1 Archival aperture card and composition thereof
10/14/1992EP0508413A2 A plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
10/14/1992EP0508127A1 Overhead projector with collapsible arm for the projection head
10/14/1992CN2118999U Portable slide projector with slide detector
10/13/1992CA2065751A1 Archival aperture card
10/12/1992WO1992022009A1 Reflection type projection screen, method of manufacturing same and system for manufacturing same
10/06/1992US5153638 Image projection apparatus and the method of driving the zoom lens
10/06/1992US5153637 Reader printer incorporating scanning plane mirror therein
10/06/1992US5153636 Reader printer
10/06/1992US5153635 Microfilm viewer/printer projection system
10/06/1992US5153621 Optical system for projecting multiple images in adjoining relation without illuminance discontinuities
10/06/1992US5153569 Visual image display apparatus having a video display for one eye and a controllable shutter for the other eye
10/06/1992US5152492 Viewgraph mount
10/06/1992US5152474 Self-centering guide spindle
10/01/1992WO1992016871A1 Projection type display device
09/1992
09/29/1992US5151799 System and technique for making holographic projection screens
09/29/1992US5151725 Apparatus and method for editing film
09/29/1992US5151593 Image reading apparatus with corrected optical length
09/23/1992EP0505286A2 Light source and reflector assembly
09/23/1992EP0504910A2 Backlighting device
09/22/1992US5150238 Active matrix lcd projection system with anti-reflective characteristics
09/22/1992US5150138 Projection type image display apparatus
09/17/1992DE4108325A1 Frame for projector slide - has guides on each side to guide slide into its required position
09/17/1992DE4108324A1 Frame for projector slide - is made in two parts, with each part fitted with cover pane of transparent material
09/16/1992EP0503289A1 Method and apparatus for forming a fog screen and image-forming method using the same
09/16/1992CA2060403A1 Method and apparatus for forming a fog screen and image-forming method using the same
09/15/1992US5148309 Reflective type screen
09/09/1992EP0502686A1 LCD projection system
09/08/1992US5146365 Screen and image display apparatus which minimizes the effects of re-reflected incident light
09/08/1992US5146247 Information retrieval apparatus
09/08/1992CA1307110C Display device
09/03/1992WO1992015041A1 Projection-type liquid crystalline projector
09/02/1992EP0500748A1 A compact contact printer with a flexible transparent cover sheet.
09/01/1992US5144462 Liquid crystal projection color display apparatus having microlens arrays with controllable refractive power
09/01/1992US5143442 Portable projection device
08/1992
08/26/1992EP0499683A2 Reflection type overhead projector
08/26/1992EP0315679B1 Method and apparatus for unloading slide projector trays
08/26/1992CN2114183U Device for projecting or taking colour motion-picture
08/25/1992US5142373 Rear projection television set having improved contrast
08/25/1992US5140764 Non-blocking microfilm jacket
08/23/1992CA2047772A1 Reflection type overhead projector
08/23/1992CA2036953A1 Automobile fibre optic blind spot eliminator
08/19/1992EP0499372A2 System and technique for making holographic projection screens
08/19/1992EP0499160A2 Transmission type projection screen assembly
08/18/1992US5140461 Adjustable viewing screen housing and display device
08/18/1992US5140460 Motion-picture screen
08/18/1992US5140428 Lcd projector combined with a video printer
08/18/1992US5140374 Reader printer
08/18/1992US5140363 Image projector
08/13/1992DE4101452A1 Slide projector with image fading device - has secondary slide support frame mounted above or below main support frame
08/12/1992CN2112847U Day film screen
08/11/1992US5138442 Image registration system for multiple picture tube projection television
08/11/1992US5138360 Camera focus detector
08/11/1992US5137347 Information retrieval apparatus
08/11/1992CA1306298C Digitally encoded alpha-numeric projector slide and systems for using the same
08/06/1992WO1992013292A1 Theatre in the round projection apparatus and method
08/05/1992EP0497145A1 Hand-held device for reading microfilms bearing in particular maps of regions, town or countries
08/05/1992EP0313640B1 Improved optical system for full color liquid crystal light valve image projection
08/05/1992CN2112166U Household pictures tv projector
08/04/1992US5136675 Slewable projection system with fiber-optic elements
08/04/1992US5135301 Reflective overhead projector with alternate light sources
08/04/1992CA1305881C Selective microfiche display equipment
07/1992
07/29/1992EP0496445A2 Rear projection screen
07/29/1992CN1017661B Photochopper synchronous semi-impules projecting device
07/28/1992US5134491 Projection type image display apparatus
07/23/1992WO1992012457A1 Enhanced contrast, maximum gain front and rear projection screens
07/23/1992WO1992012456A1 Apparatus and method for editing film
07/22/1992EP0495593A1 Method for hiding scratches or imperfections on the surface of screens used in projection system
07/21/1992US5132809 Image display apparatus
07/15/1992CN1062819A Color display device and circuitry for addressing light valve of said device
07/14/1992US5130846 Screen panel fastener
07/09/1992WO1992011566A1 Apparatus for the back-projection of documents
07/08/1992EP0493863A2 Lenticular screen for the perception of autostereoscopic images
07/08/1992EP0493635A1 Distributor of electromagnetic radiation, particularly a projection screen
07/08/1992CN2109586U Electric microfilm reader
07/07/1992US5127722 Projection screen device
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