Patents for G03B 21 - Projectors or projection-type viewers; Accessories therefor (41,465)
04/1998
04/22/1998CN2279630Y Zoomlens using for slide projector
04/22/1998CN2279629Y 投影仪 Projector
04/22/1998CN1179867A Picture display device
04/21/1998US5742326 Focus adjustable image reading device for calculating a focus position of a source document
04/21/1998US5741057 Device for displaying a projected image
04/21/1998US5741056 Projecting head mechanism of a projecting machine
04/16/1998WO1998015164A2 Optical projection apparatus and method
04/15/1998EP0835477A2 Transparency viewing apparatus
04/15/1998EP0835473A1 Fixed-focus triplet projection lens for overhead projectors
04/14/1998US5739895 Film saving system
04/14/1998US5739894 Method for exhibiting cinematic images photographed at two different frame rates
04/14/1998US5738429 Portable projection display apparatus
04/14/1998US5738428 For use with processed photographic film
04/14/1998US5738427 Projector cooling system
04/09/1998WO1998014829A1 Projection display device
04/09/1998WO1998014828A2 Image projection system
04/09/1998DE19641075A1 Headlamp light distribution presenting method for car
04/08/1998EP0834766A2 Transmission-type screen
04/08/1998EP0834765A1 Projection display apparatus
04/08/1998EP0834764A2 Display adapter for overhead projector presentation
04/08/1998CN2278232Y Strong water curtain generator
04/08/1998CN1178586A Overhead projector with vibration control head
04/08/1998CN1178432A Projection type liquid crystal display device
04/07/1998US5737124 Polarizing splitter device and application to a system for illuminating a liquid-crystal screen
04/02/1998WO1998014012A1 Angled color dispersement and recombination prism
04/02/1998WO1998013726A1 Transparency holder and method of manufacture thereof
04/02/1998WO1998013725A1 Projection display having light source
04/02/1998CA2264024A1 Angled color dispersement and recombination prism
04/01/1998EP0833548A1 Light source lamp unit, light source device, and projection display device
04/01/1998EP0833192A1 Transparency holder and method of manufacturing thereof
04/01/1998CN2277531Y Universal film interpretoscope
03/1998
03/31/1998US5734447 Compact back projection device having either a diffractive optical component or two optical mixing components
03/26/1998WO1998012601A1 Projector
03/25/1998CN2277087Y 动态演示投影仪 Dynamic presentation projector
03/24/1998US5730517 Projector
03/19/1998WO1998011275A1 High-brightness color liquid crystal display panel employing systemic light recycling
03/19/1998DE19642617A1 Image or image sequence projection device
03/18/1998EP0830032A2 White light enhanced colour field sequential projection system
03/18/1998EP0830003A2 Apparatus for scanning slides
03/18/1998EP0829750A2 Liquid crystal display projector
03/18/1998EP0829739A1 Polarized light separator, method of manufacturing the same, and projection display
03/17/1998US5729386 Light projection method and a projection type image display apparatus for performing the same
03/17/1998US5727860 Interlaced image projection apparatus
03/11/1998EP0828202A2 Method for producing transparent type hologram
03/11/1998CN1175708A Speaker apparatus with picture projecting screen
03/11/1998CN1175707A 投影型显示装置 A projection type display apparatus
03/10/1998US5724775 Multi-pieced, portable projection dome and method of assembling the same
03/05/1998WO1998009113A1 Illuminating apparatus and projection display
03/04/1998EP0827014A2 Projector
03/04/1998EP0827006A2 Projector apparatus with means for color separation/synthesis
03/04/1998CN1175309A 3-D imaging system
03/04/1998CN1175006A Backward projecting screen and making method and image display device
03/03/1998US5724188 Lenticular lens sheet
03/03/1998US5724182 Optical sheet and a light transmission screen using the same
03/03/1998US5722769 Retractable projector
03/03/1998US5722753 Lamp device of liquid-crystal projection apparatus
03/03/1998US5722751 Stereo slide mount and masking-amount guide device
03/03/1998US5722694 Transparent envelope with foldable pocket flap for information display
03/02/1998CA2214059A1 Projector apparatus
02/1998
02/26/1998WO1998008141A1 Image projecting apparatus
02/26/1998WO1998008140A1 Method for imparting both high-impact cinematic images and conventional cinematic images on the same strip of motion picture film
02/26/1998WO1998008118A1 Polarized light separating/combining optical element, polarized light illuminating apparatus and projection-type display device
02/25/1998EP0825597A1 Film scanner with servo system
02/25/1998EP0825480A2 Reflection screen and front projection system
02/25/1998EP0825473A2 Projector apparatus
02/25/1998EP0825472A2 Projection-type display apparatus
02/25/1998EP0825460A2 Lenticular lens sheet, display front plate and transmission type projection screen
02/25/1998EP0824829A1 Projection device
02/25/1998CN2275312Y Monitor with projection function
02/25/1998CN1174333A Projector with projetion angle adjusting means
02/24/1998US5721603 Illumination system and display device including such a system
02/24/1998US5720539 Apparatus for detecting a projection angle in a projection system for displaying a picture
02/24/1998US5720538 Stereo slide viewer and stereo slide mount
02/19/1998WO1998006588A1 Recording assembly for ink-jet printing and transparencies
02/17/1998US5719621 Film image reproducing apparatus
02/12/1998DE19631945A1 LCD video signal projector for e.g. television or computer monitor
02/11/1998EP0823813A2 Portable communication device
02/11/1998CN1172964A Athermal LCD projection lens
02/10/1998US5717529 Controllable horizon diaphragm for planetaria
02/10/1998US5716118 Imaging optical system
02/05/1998WO1998005161A1 Video projection apparatus and method of displaying a video image composed of pixels of a defined size
02/05/1998CA2231152A1 Video projection device and method for showing a video picture-formed of picture points of defined magnitude
02/04/1998EP0822723A2 Screen of Projection Display
02/04/1998EP0822443A1 Rear projection screen
02/04/1998CN1172273A 快门装置 Shutter device
02/03/1998US5715083 Screen for liquid crystal projector
02/03/1998US5715021 Methods and apparatus for image projection
02/03/1998US5715019 Video signal processing apparatus for prompter
02/03/1998US5713652 Slide projector mountable light valve display
01/1998
01/29/1998WO1998003898A1 Rear projection screen
01/29/1998DE19705763A1 DC starter type discharge lamp like metal halide lamp used in projector apparatus
01/27/1998US5712693 Light valve and display system with a substrate having particular relationship between its central thickness, display area diameter, and refractive index
01/21/1998EP0819975A1 Transmission type screen and method of manufacturing thereof
01/21/1998EP0819974A1 Transmission type screen and method of manufacturing thereof
01/21/1998EP0819973A1 Fresnel lens sheet for rear projection screen
01/21/1998EP0819966A2 Light projection device with lens array integrator
01/21/1998EP0819259A1 High efficiency polarized display
01/20/1998US5710616 Film position detecting device, film image display device and movie film recording device
01/20/1998US5709445 Oblique projection optical system
01/15/1998DE19627598A1 Transparency projector with two parallel glass panes