G03B 21 - Projectors or projection-type viewers; Accessories therefor

Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
01/1994
01/05/1994	DE4221375A1 Mirror for top-illumination projector - rectifies troublesome distortions which normally occur with projection angle inclined to horizontal
12/1993
12/31/1993	CA2099098A1 Method and apparatus for controlling distortion of a projected image
12/29/1993	EP0576372A1 Device for aligning a film in a projection gate
12/29/1993	CN2151481Y Reflective projector
12/28/1993	US5274499 Battery operated projection screen with spring assisted roller and replaceable fascia
12/28/1993	US5274406 Image projecting device
12/28/1993	CA1325541C Film image reader/scanner apparatus
12/28/1993	CA1325540C Screen device
12/22/1993	EP0574929A1 Micrographic reader with digitized image
12/22/1993	EP0563359A4 Scene projector
12/22/1993	CN1023261C 4:3 perf coversion sprocket
12/22/1993	CN1023260C Optical illumination system and projection apparatus comprising such a system
12/21/1993	US5271497 Storage assemblage for index print sheets and cassettes
12/19/1993	CA2098693A1 Micrographic reader with digitized image
12/16/1993	DE4317671A1 Navigational assistance in motor vehicles - involves combining use of cartography, micro photography, film copying, film projection, computer techniques
12/15/1993	EP0574269A1 Projecting type color image display device
12/15/1993	EP0574210A1 Opaque sheet with transparent windows for storing photographic slides
12/15/1993	EP0573905A1 Retroreflecting polarizer for presentation systems
12/15/1993	EP0573843A2 Lens holder and method for making a thin film
12/15/1993	EP0393155B1 Film transport device
12/15/1993	CN2149638Y Projector for showing 3-D terrain
12/14/1993	US5271066 Coordinate determining device
12/14/1993	US5270752 Method and apparatus for a fog screen and image-forming method using the same
12/12/1993	CA2071055A1 Projection tv system
12/09/1993	DE4240167A1 Uniform running controller for roller - illuminates stroboscopic plates on roller ends to detect slipping rollers
12/08/1993	EP0572996A2 Light valve apparatus and display system using the same
12/07/1993	CA1324906C Rear-projection screen
12/07/1993	CA1324905C Liquid crystal motion picture projector with memory
12/02/1993	DE4226957C1 Film cassette for continuous projection - has sprung tension control roller for return feed with programmed control of loop forming guides.
12/01/1993	CN2148342Y Brightness-auto-controlled motor-driven focus control projector
11/1993
11/30/1993	US5266987 Envelope for transparencies
11/30/1993	US5265802 Fluid projection screen system
11/30/1993	CA2045894C Projection-type television set
11/25/1993	WO1993020478A3 Overhead projector for lcd panel
11/25/1993	WO1993018496A3 Tunnel vision video display system
11/24/1993	CN2147557Y Telescope type image watch lens
11/23/1993	US5264881 Split static surround display system
11/23/1993	US5264879 Projection type display apparatus
11/23/1993	US5264080 For preserving records having permanent value and photosensitivity
11/23/1993	US5263579 Container for index print sheet and cassette
11/17/1993	CN2146725Y High-resolution speculum head
11/17/1993	CN2146724Y Adjusting plate for film-conveying line of Dongfeng' projector
11/16/1993	US5261645 Projector ceiling lift
11/11/1993	WO1993022709A1 High contrast front projection display screen
11/10/1993	EP0568690A1 Screen for image projection.
11/10/1993	CN2146014Y Multi-picture auto-changing demonstrating appliance
11/09/1993	US5260831 Anamorphic illuminating optical system
11/09/1993	US5260797 Projection type image display apparatus with circuit for correcting luminance nonuniformity
11/09/1993	US5260730 Optical overhead projector for electronic images
11/04/1993	DE4214262A1 Homogeneous illumination of transparencies in optical image projector - merging cones of light from closely-spaced array of lamps or optical fibres onto slide or liquid crustal shutter.
11/03/1993	EP0567550A1 Apparatus and method for editing film
11/02/1993	US5258870 Projection screen
11/02/1993	US5257447 Method for inserting a slide into a slide frame
11/02/1993	CA2014370C Opaque projector
11/02/1993	CA1323815C Protective holder for holding thin or substantially thin items
10/1993
10/28/1993	WO1993018620A3 Spatial light modulator system
10/27/1993	EP0567330A2 Projection television set
10/27/1993	EP0567317A1 Projection television set
10/27/1993	EP0386129B1 Enlarging photographic printer
10/26/1993	US5257051 Method and apparatus for adjusting the optical alignment of a film projection system
10/21/1993	DE4226959C1 Film winder - has tilt levers round edge of film plate disc to wind film in clover-leaf outline for non-stop showing
10/19/1993	US5255029 Liquid crystal display for projection systems
10/14/1993	WO1993020478A2 Overhead projector for lcd panel
10/12/1993	US5253074 Temperature compensated color LCD projector
10/12/1993	US5253049 Tunnel vision video display system
10/12/1993	US5253000 Device for projecting a moving image formed of light, shadow, and color
10/12/1993	US5251747 Storage assemblage for index print sheets and cassettes
10/12/1993	CA2013070C Catadioptric projector, catadioptric projection system and process
10/06/1993	EP0563874A1 Optical illumination system and projection display apparatus using the same
10/06/1993	EP0563479A1 Overhead projector with image direction adjusting device
10/06/1993	EP0563359A1 Scene projector
10/06/1993	EP0268620B2 Projectable passive liquid crystal display
10/05/1993	US5251065 Polarizing screen and projector using the same
10/05/1993	US5250968 Image projecting unit
10/05/1993	US5250967 Liquid crystal projector
09/1993
09/30/1993	WO1993019396A1 Apparatus and method for producing 3-dimensional images
09/29/1993	CN1076788A Improved simulator arrangement
09/28/1993	US5249017 Image forming apparatus
09/28/1993	US5249006 High power magnifying projector
09/23/1993	DE4218383C1 Weights for door or window curtain made of light reflecting material - is in form of rod along bottom edge and fitting into lengthwise slot, with attachments, movable guide and spring
09/22/1993	EP0561551A1 Bilayer rear projection screens
09/22/1993	EP0561388A1 Illuminating optical system and projector utilizing the same
09/22/1993	CN1022204C Projector apparatus
09/21/1993	CA2091423A1 Bilayer rear projection screens
09/16/1993	WO1993018620A2 Spatial light modulator system
09/16/1993	DE4207656A1 Folding overhead projector with compact storage - has hinged, two section upright support to fold into housing and with mirror angled out of bottom of housing when operating
09/15/1993	EP0560125A1 Projector
09/14/1993	US5245370 Overhead projector focus arm adjustment mechanism
09/14/1993	US5245369 To display an image as an array of pixels
09/14/1993	US5245199 Mark detecting apparatus using active threshold comparison
09/14/1993	US5244137 Film transport device with sprocket teeth and film pressure skid
09/08/1993	CN1022068C Artificial mirage imitator
09/07/1993	US5243371 Swing arm assembly for the projector head of an overhead projector
09/02/1993	WO1993017366A1 Improved simulator arrangement
09/02/1993	DE4206143A1 Attaching starting end of film onto cylindrical winding centre - by fitting relatively soft slit tube round centre, inserting end of film into slit, and rotating assembly through one complete turn
09/02/1993	CA2119885A1 Improved simulator arrangement
08/1993
08/31/1993	US5241416 Screen and projector using said screen
08/31/1993	US5241376 Cinematographic system
08/31/1993	US5241333 Overhead projector with pivoting lamp changer and color adjustment
08/31/1993	CA1321719C Rear-projection screen

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