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)
06/1983
06/22/1983EP0081519A1 Information storage and retrieval.
06/22/1983EP0081495A1 Television viewer
06/21/1983US4389701 Illumination system
06/21/1983US4389700 Projection unit with separable lamp capsule and slidable means for ejecting same
06/21/1983US4389104 Microfilm cassette and the projection apparatus for the viewing of same
06/14/1983US4388679 Projection lighting unit with glass reflector capable of dual insertion
06/14/1983US4387959 Rear projection screen
06/07/1983US4386833 Epi-illumination type projection device
06/07/1983CA1147589A1 Microfiche system
06/01/1983EP0080191A1 Winding device for a projection screen
06/01/1983EP0079930A1 Optical system.
05/1983
05/31/1983US4386292 Projection lamp comprising single ended arc discharge lamp and an interference filter
05/31/1983US4385816 Slide previewer, sorter, and stack loader
05/31/1983CA1147189A1 Microfiche camera with cooperating shutter and light shield
05/24/1983US4384769 Illuminating system for test projector
05/24/1983US4384768 Method and apparatus for manipulating the contrast of sine wave gratings and other visual patterns
05/17/1983US4384319 Projection lighting unit with rear loading lamp capsule member
05/11/1983EP0078320A1 Verification device.
04/1983
04/26/1983US4380946 Film punch registration
04/26/1983CA1145181A1 Method of modifying slide transparencies so as to provide uniform illumination in angular projection
04/20/1983EP0077117A1 Rear projection apparatus
04/20/1983EP0076852A1 Automatic high speed microfilm searching system
04/19/1983US4380380 Episcopic projector
04/19/1983US4380374 Variable focal length projection lens for use on overhead projectors
04/19/1983US4380368 Projection screen
04/12/1983US4379628 Folding transparency (microfiche) viewer
04/12/1983US4379617 Rear projection screen for a color television projector
04/05/1983CA1144132A1 Protective band for photosensitive film on spools
04/05/1983CA1143970A1 Picture viewing device
03/1983
03/29/1983US4378148 Memory controlled motion picture apparatus
03/23/1983EP0074901A1 Tape unwinding means and tape reading apparatus provided with it
03/15/1983US4376967 Front loading projection unit with wireform retention member
03/15/1983US4376610 Storage and handling system for photographic slides and the like and method
03/15/1983US4376348 Picture viewer
03/08/1983US4375909 Rear projection screen and method for the production thereof
03/08/1983CA1142376A1 Method for correcting non-uniform illumination in oblique projection of slide transparencies
03/01/1983CA1142002A1 Microfilm reader and work station
02/1983
02/22/1983US4375106 Remote control circuit
02/22/1983US4374611 Compact X-Y positioning mechanism for microfiche
02/22/1983US4374609 Image projection screen with decreased color shift as a function of viewing angle, and method of manufacture
02/16/1983EP0072198A2 A film support element assembly for a projector, camera, and like apparatus
02/09/1983EP0071230A1 Lighting apparatus
02/08/1983US4372639 Directional diffusing screen
02/04/1983EP0062636A4 Three-dimensional plural display apparatus.
02/01/1983US4371242 Objective lens exchanging arrangement in a microfilm reader
02/01/1983US4371239 Film positioning device for microform printing system
02/01/1983CA1140376A1 Microfiche reader printer with interchangeable carriages
02/01/1983CA1140375A1 Direct illumination projector
01/1983
01/25/1983CA1140258A1 Magnetic tape drive system
01/19/1983EP0026177B1 Projector
01/18/1983US4368964 Slide projector with stationary slide magazines and automatic slide changer
01/18/1983US4368912 Slide holder and transfer device
01/11/1983CA1139285A1 Method and apparatus for winding an endless strip in a storage means
01/04/1983US4367033 Combined reader-printer
01/04/1983US4367020 Projection device and loop box therefor
12/1982
12/28/1982US4365877 Field flattener lens element assembly
12/28/1982CA1138234A1 Projection screen and process for production thereof
12/28/1982CA1138233A1 Sheeting useful as a projection screen
12/23/1982WO1982004518A1 Television viewer
12/23/1982WO1982004489A1 Information storage and retrieval
12/22/1982EP0067430A1 Rear projection screen
12/22/1982EP0067280A2 Projection screen
12/21/1982US4364635 Slide-screen for back projection
12/09/1982WO1982004327A1 Directional diffusing screen
12/08/1982EP0066291A2 Dia slide
12/08/1982EP0065954A1 Real image projection device
12/07/1982US4362259 Apparatus for stepwise transport of photographic film or the like
11/1982
11/30/1982US4361382 Translucent projection screen for rear-type image projection system and process for fabricating the same
11/30/1982CA1136455A1 Image projection apparatus
11/25/1982WO1982004132A1 Verification device
11/24/1982EP0064995A1 Improvements relating to microfiche readers
11/17/1982EP0064723A1 Reflecting type overhead projector with automatically variable safety illumination
11/09/1982US4358184 Compact collapsible microform viewer
11/09/1982US4357770 Control panel for a microfiche reader
11/03/1982EP0064014A1 Slide frame
11/03/1982EP0063726A1 Slide mount
11/02/1982US4357073 Collapsible stereoscopic viewer and filmstrip holder therefor
11/02/1982CA1134653A1 Image storage and display
10/1982
10/28/1982WO1982003698A1 Automatic high speed microfilm searching system
10/27/1982EP0063425A1 Variable focal length projection lens for use on overhead projectors
10/27/1982EP0063317A1 Rear projection screen
10/27/1982EP0063310A1 Projection unit with separable lamp capsule and slidable means for ejecting same
10/27/1982EP0063196A2 Transparency viewer
10/20/1982EP0062636A1 Three-dimensional plural display apparatus
10/19/1982US4354738 Comprising a mixture of laquer binder, mixing color agent flattening agent and silver powder flakes
10/19/1982US4354737 Variable gain screen permitting off-axis viewing with image brightness remaining constant
10/14/1982WO1982003488A1 Multipurpose dental x-ray film mount arrangement
10/14/1982WO1982003469A1 Electric books and microfilm structures and the production there of for use in electric books
10/12/1982US4353642 Microfilm retrieval system
10/12/1982US4353627 Over-head projector with partial projection device
10/12/1982CA1133292A1 Combination television picture projection screen unit and ornamental cover unit therefor
10/06/1982EP0061750A2 Projection unit including glass reflector with insulative cap member
10/05/1982US4352469 Spool for photographic film
10/05/1982CA1133044A1 Photoplastic film recording and monitoring apparatus
09/1982
09/30/1982WO1982003278A1 Storage device for sheets, which are intended to be exposed, particularly microfilms
09/28/1982US4351592 Collapsible microfiche reader assembly especially suitable for use in a desk drawer
09/28/1982US4351124 Film mount with protected face sheet
09/28/1982CA1132386A1 Slide mount and method and apparatus for loading
09/21/1982US4350417 Apparatus to control light intensity from arc lamp
09/14/1982US4349273 Electrophotographic printer exposure station
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