Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
01/1989
01/24/1989US4799763 Paraxial stereoscopic projection system
01/18/1989EP0169867B1 Method for dimensionally adjusting series images to be combined with natural images, and installation for implementing such method
01/18/1989CN2031113U Inserting film gate for 16 mm cineprojector
01/17/1989US4798352 Film reel having film-threadable film-retaining core
01/12/1989DE3823904A1 Slide projector
01/10/1989US4796978 Projection type liquid crystal displaying device
01/05/1989DE3720575A1 Device for storing slides (transparencies)
01/03/1989US4795252 Overhead projector
01/03/1989US4795251 For use with a slide projector
12/1988
12/29/1988DE3719560A1 Positioning device
12/28/1988CA1247410A Holographic optical apparatus for use with expanded- beam type fiber optical components
12/27/1988US4794425 Overhead projector with a copying device
12/20/1988US4792209 Projection screen
12/15/1988WO1988009952A1 Display system utilising light transmitting screen and method of manufacturing same
12/15/1988DE3718837A1 Receiving appliance for slides (transparencies)
12/14/1988CN88200696U Multifunction photo-composing device
12/13/1988US4791540 Light fixture providing normalized output
12/07/1988EP0294122A1 Display system utilising light transmitting screen and method of manufacturing same
12/07/1988CN88201474U Small slide projector with dynamic demonstrating unit
12/06/1988US4789880 Focusing device for use in optical apparatuses
12/06/1988CA1245891A1 Slide mount
12/01/1988WO1988009299A1 Container for shipping and handling feature-length films
12/01/1988WO1988009224A1 Method and apparatus for unloading slide projector trays
12/01/1988WO1988008555A3 Apparatus for printing from microfilm
11/1988
11/30/1988EP0293182A2 Light fixture providing normalized output
11/29/1988US4787738 Holder for overhead projection system transparencies
11/29/1988US4787737 Projection display apparatus
11/22/1988US4786945 Microfilm reader-printer
11/22/1988US4785549 Method and apparatus for producing and editing microfiche masters
11/22/1988CA1245201A1 Projection lamp unit
11/17/1988WO1988009102A1 Improved optical system for full color liquid crystal light valve image projection
11/17/1988EP0291406A1 Method and device for the production of an illuminated design and its engraving
11/17/1988EP0174931B1 Multiple projection optics slide projection apparatus using a circular slide tray, having fixed-position slide gates
11/16/1988CN87208100U Motion picture projector's film-feeding gear
11/15/1988US4785334 Image forming apparatus
11/15/1988US4784509 Devices for fixing support, joint or hinge elements to panels of expanded polystyrene, or the like
11/15/1988CA1244647A1 Method for presentation of information in a plurality of sheetshaped information carriers and a device for the accomplishment of the method
11/10/1988DE3714180A1 Writing projector having a planar light source for transmitted light projection
11/10/1988DE3711542A1 Overhead type projector e.g. LCD device - has projection head mounted on carrier arm and comprising objective and deflection mirror with light source
11/08/1988US4783685 Reader-printer
11/03/1988WO1988008555A2 Apparatus for printing from microfilm
11/03/1988WO1988008551A1 Liquid crystal display for projection systems
10/1988
10/27/1988DE3711541A1 Liquid crystal display system for overhead picture projection - has two transparent plates sandwiching liquid crystal and held by frame with plug for computer
10/27/1988DE3711540A1 Electric signals converter for video signal projection - has small transparency projector with LCD of transparency size in image plane
10/26/1988EP0288117A2 A projection screen having high resolution and good mechanical stability
10/18/1988USRE32766 Picture viewer
10/18/1988US4779176 Light pattern generator
10/12/1988CN87102524A Photochopper synchronous semi-impulse projecting device
10/11/1988US4776688 Overhead projector
10/05/1988EP0285531A1 Packaging device for photographic slides
10/04/1988US4775232 Catadioptric projection lantern
09/1988
09/28/1988EP0284399A1 Motion picture film transport
09/27/1988US4773731 One-piece projection screen
09/22/1988DE3708406A1 Slide frame and method for framing a slide strip
09/21/1988EP0282783A2 Sleeve member for flat products, especially slides
09/21/1988EP0282659A1 Apparatus for projecting an image
09/21/1988CN88212741U Epicyclic gear film transport mechanism for camera
09/20/1988US4772920 Image forming apparatus
09/20/1988US4772098 Liquid crystal projector with cooling system
09/14/1988EP0282044A2 Scanning exposure device
09/14/1988EP0281690A1 Rear projection screen and rear projection system provided with such a screen
09/13/1988US4770525 Liquid crystal projector
09/13/1988US4770524 Slide projection system for coplanar stored slides
09/08/1988DE3706067A1 Projector for the projection of transparencies held in glassless slide mounts
09/07/1988EP0281436A1 Composite material and screens manufactured from this material
08/1988
08/31/1988CN87216269U Projector for paper strip motion picture film
08/30/1988US4767186 Front projection screen with rear light concentrating lens array
08/30/1988US4767079 Roll film carrier for reader or reader printer
08/30/1988CA1241221A1 Projection lens system
08/25/1988WO1988006305A1 Optical device
08/25/1988DE3704927A1 Optische einrichtung Optical device
08/23/1988US4766498 Image projection system
08/23/1988US4765734 Digitally encoded alpha-numeric projector slide and systems for using the same
08/23/1988US4765733 Light projector
08/23/1988US4765561 Drive-out assembly for microfilm apparatus
08/23/1988CA1240867A1 Rear projection screen
08/23/1988CA1240866A1 Rear projection screen
08/23/1988CA1240864A1 Microfiche guidance and buckling detection system
08/23/1988CA1240863A1 Transport apparatus for microfiche cards
08/23/1988CA1240862A1 Distortion correction for an overhead projector system
08/17/1988EP0277985A1 Liquid crystal motion picture projector with memory.
08/16/1988US4763993 Liquid crystal display for projection systems
08/16/1988CA1240542A1 Distortion correction for an overhead projector system
08/10/1988EP0277469A2 Projector apparatus
08/10/1988CN85105808B Efficient reflection plate with group of mirrors
08/09/1988US4762393 Rear projection screen and rear projection system provided with such a screen
08/03/1988EP0140942B1 Reduced image stereo system
08/03/1988CN88100303A Rear projection screen and rear projection system provided with such a screne
07/1988
07/28/1988WO1988005557A1 Projector apparatus
07/28/1988DE3700877A1 Frame for photographic slides
07/27/1988EP0035033B1 Sheeting useful as a projection screen
07/26/1988US4759511 Apparatus for feeding the free end of a microfilm to a takeup reel and for winding the microfilm thereon
07/20/1988EP0274577A1 Microfilm punch card, especially a camera card
07/20/1988CN87215695U Multifunctional imaging instrument
07/19/1988US4757626 Display apparatus
07/14/1988WO1988005178A1 Microfilm printer apparatus and method
07/12/1988US4757380 Method of causing an observer to get a three-dimensional impression from a two-dimensional representation
07/12/1988US4756616 Image projection system
07/12/1988US4756615 Portable folding microform reader
07/12/1988US4756614 Film projector toy