Patents
Sitemap › G02 - Optics › G02B - Optical elements, systems, or apparatus › G02B 15 - Optical objectives with means for varying the magnification
Patents for G02B 15 - Optical objectives with means for varying the magnification (11,929)
07/1992
07/23/1992DE4201169A1 Tilting lens system for camera - has at least one lens in sequence of lenses which can be swung about point on lens axis
07/21/1992US5132848 Wideangle four group zoom lens
07/21/1992US5132846 Microfilm reader/printer zoom lens
07/21/1992US5132838 Keplerian zoom finder optical system
07/07/1992US5128805 Zoom lens system
07/01/1992EP0493261A2 Zoom lens
06/1992
06/30/1992US5126884 Compact wide-angle zoom lens
06/02/1992US5119237 Zoom lens system
05/1992
05/26/1992US5117309 Vari-focal lens system having graded refractive index lens
05/26/1992US5117308 Lens system using unhomogenous media
05/21/1992DE4036350A1 Photographic shot lens - has variable focus for compact cameras, producing photographs of 24 x 36 mm
05/12/1992US5113287 Compact zoom lens with positive power front lens group and negative power rear lens group
05/05/1992US5111338 Zoom Lens
05/05/1992US5111223 Camera system
04/1992
04/28/1992US5109299 Zoom lens system
04/22/1992CN2102520U Zoomlens
04/14/1992US5105311 Zoom lens system having high zoom ratio ranging to wide field angle
04/07/1992US5103343 Variable magnification lens of rear focus type
03/1992
03/31/1992US5101299 Zoom lens system
03/31/1992US5100223 Zoom lens
03/17/1992US5097360 Zoom lens capable of changing a range of variable focal length
03/10/1992US5095388 Zoom lens system
03/10/1992US5095387 Zoom lens
03/10/1992US5095326 Kepler-type erect image viewfinder and erecting prism
03/04/1992EP0473117A1 High-aperture, wide angle lens
03/04/1992EP0473099A1 Variable magnification lens of rear focus type
03/04/1992EP0472597A1 Continuously focusable optical system incorporating an afocal variator optical system
02/1992
02/11/1992US5087988 Zoom lens
02/04/1992US5086356 Compact zoom lens system
02/04/1992US5086355 Focal length changeable lens system
02/04/1992US5086353 Variable magnification viewfinder optical system
01/1992
01/21/1992US5082360 Compound zoom lens
01/14/1992US5080473 Vari-focal lens system
01/07/1992US5079575 Camera incorporating a zoom lens
01/07/1992US5078481 Magnification changing lens
01/02/1992EP0463220A1 Optical lens arrangement for obtaining three angular magnifications by rotating a system of lenses
12/1991
12/31/1991US5076677 Zoom lens
12/17/1991US5073015 Zoom lens system
12/10/1991US5071237 Zoom lens for an electronic camera
12/10/1991US5071235 Small type variable focal length lens
12/03/1991US5070350 Field curvature effects minimized in tele/pan camera
12/03/1991US5069536 Zoom lens system
11/1991
11/26/1991US5067802 Lens movement control device for zoom lens
11/21/1991EP0457493A1 Zoom lens
11/19/1991CA2042132A1 Zoom lens
11/05/1991US5062695 Zoom lens system for use in a microfilm projection apparatus
10/1991
10/30/1991EP0453822A1 Zoom beam expander
10/29/1991US5061053 Telephoto zoom lens system
10/29/1991US5061051 Compact zoom lens
10/23/1991EP0263165B1 Infrared afocal zoom telescope
10/22/1991US5059007 Internally focusing zoom lens
10/22/1991US5059006 Compact zoom lens
10/15/1991US5056900 Zoom lens
10/08/1991US5055868 Variable magnification finder of real image type
10/08/1991US5054898 Compact high-range varifocal objectives
10/08/1991US5054897 Plastic zoom lens
10/08/1991US5054896 Continuously focusable microscope incorporating an afocal variator optical system
10/01/1991US5053810 Reprographic lens system and a reprographic camera comprising such a system
10/01/1991US5052791 Variable magnification viewfinder optical system with variable magnification based on polarization
10/01/1991US5052787 Zoom finder
09/1991
09/24/1991US5050972 Zoom lens
09/24/1991US5050971 Variable focal length photo-taking optical system
09/17/1991US5048939 Zoom lens system
09/10/1991US5046833 Zoom lens system
08/1991
08/27/1991US5042927 Compact zoom lens
08/27/1991US5042926 Zoom lens and focusing method
08/20/1991US5040881 Image stabilization lens system
08/13/1991US5039212 Zoom lens for variable magnification copying machine
08/13/1991US5039211 Zoom lens capable of image blur compensation
07/1991
07/30/1991US5035492 Compact and high-speed wide-angle zoom lens system
07/23/1991US5033832 High zoom-ratio lens system for covering wide angle for compact camera
07/16/1991US5032013 Zoom lens
07/16/1991US5032012 Rear converter lens system
07/02/1991US5028125 Zoom finder of real image type
06/1991
06/25/1991US5027144 Lens changer for cameras
06/12/1991CN1012850B Zoom lens of reduced total length
06/11/1991US5022724 Zoom system
05/1991
05/28/1991US5018843 Zoom lens apparatus with lens units for zooming and focusing
05/14/1991US5015077 Zoom lens system for use in a microfilm projection apparatus
05/08/1991EP0425949A2 Telephoto zoom lens
05/07/1991US5013142 Bifocal optical system
05/02/1991DE4033979A1 Sound image viewfinder for camera - uses multiple lenses of plastics materials to compensate for optical aberrations
04/1991
04/30/1991US5011272 Compact zoom lens
04/25/1991DE4033293A1 Zoom lens system for compact camera - consists of two groups of lens with mechanism to vary distance between groups
04/24/1991CN2075500U Double-channel optical interface for endoscope image display instrument
04/23/1991US5009492 Zoom lens
04/23/1991US5009491 Compact zoom lens system
04/16/1991US5007719 Varifocal imaging optical system having moire eliminating function
04/09/1991US5005955 Keplerian zoom finder optical system
04/02/1991US5004329 Vari-focal lens system
04/02/1991US5004319 Crystal diffraction lens with variable focal length
03/1991
03/26/1991US5002373 Zoom lens system of inner focus type
03/19/1991US5000556 Binocular telescope with auxiliary lens system
03/19/1991US5000551 Zoom lens
03/19/1991US5000550 Wide-angle type zoom lens having inner-focus lens
03/19/1991US5000549 Zoom lens for stabilizing the image
03/12/1991US4999007 Vari-focal lens system
03/12/1991US4998808 Compact zoom lens
03/12/1991US4998807 Variable focal length lens system
03/05/1991US4997265 Zoom lens for variable power copying apparatus
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