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)
08/1989
08/29/1989US4861145 Small-size zoom lens of widely variable magnification
08/24/1989WO1989007784A1 A reprographic lens system and a reprographic camera comprising such a system
08/23/1989EP0328930A2 Zoom lens
08/22/1989US4859042 Zoom lens
08/22/1989US4859040 Optical system having gradient-index lens and method for correcting aberrations
08/08/1989US4854685 Variable-focus objective-lens device and a method for the control of said device
08/08/1989US4854684 Compact zoom lens
08/08/1989US4854683 Zoom lens
08/08/1989US4854682 Compact high vari-focal ratio zoom lens system
08/08/1989US4854681 Compact zoom lens
08/08/1989US4854680 Zoom view finder
08/08/1989US4854679 Photographic system having front conversion lens
07/1989
07/20/1989DE3726355A1 Bifocal optical infra-red system
07/18/1989US4848883 Telephoto zoom lens system having four lens groups
07/11/1989US4846563 Compact zoom lens of large aperture ratio
07/11/1989US4846562 Zoom lens system
07/04/1989US4844600 Zoom lens system
07/04/1989US4844599 Compact and high-speed wide-angle zoom lens system
07/04/1989CA1256724A1 Infrared afocal refractor telescope
06/1989
06/27/1989US4842395 Finder of variable magnification
06/27/1989US4842386 Variable focal length objective
06/27/1989US4842385 Zoom lens
06/20/1989US4840474 Furnace viewing system
06/20/1989US4840469 Telephoto zoom lens
06/20/1989US4840468 Focusing method for zoom lens
06/20/1989US4840467 Compact zoom lens system with a high zooming ratio
06/20/1989US4840466 Changeable magnification optical system
06/14/1989EP0320021A2 Zoom lens
06/13/1989US4838669 Compact zoom lens system
06/13/1989US4838668 Zoom lens
06/13/1989US4838667 Zoom lens system for use in microfilm projection apparatus
06/13/1989US4838666 Wide angle zoom lens of long back focal distance
06/06/1989US4836663 Telephoto zoom lens system
06/06/1989US4836662 Telephoto zoom lens system
06/06/1989US4836661 Optical system of variable magnification power
06/06/1989US4836660 Zoom lens system for compact camera
05/1989
05/30/1989US4834513 Albada type zoom finder
05/23/1989US4832471 Zoom lens
05/23/1989US4832470 Inverted galilean telescope type viewfinder system capable of changing over the magnification
05/23/1989US4832465 Zoom lens for use in copying
05/16/1989USRE32923 Zoom lens
05/16/1989US4830477 Zoom lens capable of obtaining focal lengths beyond a variable focal length range
05/16/1989US4830476 Compact zoom lens system
05/16/1989US4830475 Focusing means for a zoom lens group
05/16/1989US4830474 Variable magnification optical system
05/16/1989US4830473 Rear conversion lens system
05/09/1989US4828372 Wide-angle zoom lens
05/02/1989CA1253381A1 Telescopic sight with erector lens focus adjustment
04/1989
04/25/1989US4824236 Zoom lens system for use in microfilm projection apparatus
04/25/1989US4824226 Compact zoom lens system for video camera
04/25/1989US4824223 Projection objective with variable focal length
04/20/1989WO1989003540A1 Wide-angle zoom lens
04/18/1989US4822152 Compact high-vari-focal ratio zoom lens system
04/11/1989US4820028 Zoom lens with a variable refractive index element
04/04/1989US4818083 Vari-focal lens system
04/04/1989US4818082 Compact wide-angle close-focus SLR zoom lens
04/04/1989US4818081 Zoom lens system for use in compact camera
03/1989
03/28/1989US4815830 Small sized zoom lens
03/28/1989US4815829 Telephoto zoom lens system
03/21/1989US4813773 Copying zoom lens
03/14/1989US4812024 Zoom lens
03/14/1989US4812023 Zoom finder
03/14/1989US4812022 Zoom lens
03/14/1989US4812021 Wide angle zoom lens
03/07/1989US4810072 Zoom lens
03/07/1989US4810071 Variable focal length lens system
03/07/1989US4810070 Lens system having a good image performance for white light
02/1989
02/28/1989US4807983 Photographic lens of extended focusing range with improved stability of picture quality
02/28/1989US4807982 Lens system of variable magnification range and having a supplementary lens unit
02/23/1989EP0181395A4 Variable power lens system.
02/21/1989US4806003 Inverted-telephoto type wide angle lens system
02/21/1989US4805999 Variable magnification lens system with constant object-image distance
02/07/1989US4802747 Compact zoom lens
02/07/1989US4802738 Intermediate optical device
02/07/1989US4802717 Infrared afocal zoom telescope
01/1989
01/04/1989EP0297361A2 Telecentric image-forming system having variable magnifications
01/03/1989CA1247907A1 Infrared objective lens assembly
12/1988
12/28/1988CN88212699U Lens with multiple apertures for 135 type camera
12/27/1988US4793698 Telephoto lens system
12/20/1988US4792215 Zoom lens
12/13/1988US4791441 Multi-focus camera
12/07/1988EP0294005A1 Varifocal optical system and associated electromechanical control means
12/06/1988US4789229 Zoom lens system
12/06/1988US4789227 Zoom lens
12/06/1988US4789226 Zoom lens system
11/1988
11/29/1988US4787719 Zoom lens system
11/29/1988US4787718 Zoom lens system
11/22/1988US4786153 Large-aperture macro lens system
11/22/1988US4786150 Zoom lens with beam splitter
11/15/1988US4784479 Varifocal optical system
11/09/1988CN88200813U Multifunctional photographic accessory
11/08/1988US4783141 Array lens
11/02/1988EP0289392A1 Varifocal objective and process for controlling it
11/01/1988US4781447 Ultra compact zoom lens
11/01/1988US4781446 Zoom lens having a capability of introducing special features into image formats
10/1988
10/25/1988US4779969 Finding device of variable magnification
10/25/1988US4779964 Zoom lens with a mechanism for moving a first lens so as to be compactly housed
10/11/1988US4776680 High range zoom lens of reduced size
10/11/1988US4776679 Objective of variable focal length
10/04/1988US4775228 Zoom lens
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