G02B 15 - Optical objectives with means for varying the magnification

Patents for G02B 15 - Optical objectives with means for varying the magnification (11,929)
06/1993
06/29/1993	US5223873 Magnification change-over device for a camera
06/24/1993	WO1993012450A1 Zoom lens system for use in a compact camera
06/22/1993	US5221996 Zoom lens system having short total length
06/22/1993	US5221995 Zoom lens system
06/22/1993	US5221994 Zoom lens of rear focus type
06/15/1993	US5220458 Keplerian zoomfinder optical system
06/08/1993	US5218478 Small-sized zoom lens
06/08/1993	US5218477 Zoom lens system
06/08/1993	US5218476 Zoom lens system
06/08/1993	US5218475 Attachment lens system
06/01/1993	US5216547 Small three-unit variable focal length lens system
06/01/1993	US5216546 Attachment lens system for close-up photography
05/1993
05/27/1993	DE4239603A1 Variable power view finder for camera
05/13/1993	WO1993009458A1 Zoom viewfinder
05/11/1993	US5210558 Electronically controlled camera
05/05/1993	EP0539914A1 Afocal zoom lens system with achromatic and athermal behaviour in the infrared wavelength region
04/1993
04/20/1993	US5204779 Zoom lens capable of being adjusted for tracking
04/13/1993	US5202992 Zoom lens apparatus
04/08/1993	DE4134924C1 Reversible lens attachment increasing or reducing field of view - has coupling piece at either end and produces anamorphic effect for image taking or projecting
03/1993
03/31/1993	EP0534439A1 Multiple field of view sensor lens assembly
03/24/1993	EP0533077A1 Zoom lens
03/23/1993	US5196963 Zoom lens device
03/23/1993	US5196962 Vari-focal lens system
03/17/1993	EP0531925A1 Zoom lens
03/16/1993	US5194991 Zoom lens system
03/16/1993	US5194886 Finder optical system
03/09/1993	US5193030 Zoom finder system
03/04/1993	DE4224394A1 Composite zoom lens suitable for small TV camera, e.g. CCTV camera - has, in sequence from object side, first lens unit which is static during zoom and has positive refractive power, and second lens unit
03/03/1993	EP0529646A1 Zoom lens
03/02/1993	US5191477 Zoom finder
03/02/1993	US5191476 Great relative aperture zoom lens
03/02/1993	US5191475 Zoom lens
03/02/1993	US5191469 Afocal variation focusing system for mirrored optical systems
02/1993
02/24/1993	CN2127501Y Special quartering lens for portrait
02/23/1993	US5189558 Vari-focal system having short total length
02/23/1993	US5189557 High variable magnification range zoom lens
02/18/1993	WO1993003407A1 Variable-lateral amplification objective lens with fixed object-image distance and integral rotating prism
02/17/1993	EP0527384A1 Lens with variable focus distance and integrated rotation prism
02/16/1993	US5187359 Electronic imaging device for use with photographic cameras for minimizing astigmatism
02/09/1993	US5185678 Compact high ratio zoom lens system
02/02/1993	US5184251 Vari-focal lens system
01/1993
01/26/1993	US5182673 Zoom lens having high variable magnification
01/26/1993	US5182671 Variable magnification optical system having a capability of stabilizing the image
01/26/1993	US5182592 Real image zoom viewfinder
01/19/1993	US5181056 Image stabilizing apparatus
01/12/1993	US5179473 Zoom lens
01/12/1993	US5179472 Zoom lens
12/1992
12/29/1992	US5175649 Zoom lens system
12/29/1992	US5175648 Zoom lens
12/22/1992	US5173806 Keplerian variable magnification viewfinder
12/22/1992	US5173805 Focusing method for zoom lens
12/22/1992	US5173727 Zoom viewfinder
12/15/1992	US5172273 Zoom lens system
12/15/1992	US5172154 System camera
12/08/1992	US5170292 Wide-angle zoom lens system
12/01/1992	US5168403 Zoom lens system
12/01/1992	US5168402 Vari-focal lens system
11/1992
11/26/1992	WO1992021056A1 Optical system with improved field mask
11/26/1992	WO1992021055A1 Real image viewfinder requiring no field lens
11/26/1992	WO1992021054A1 Real image zoom viewfinder
11/26/1992	WO1992021048A1 A zoom lens
11/24/1992	US5166828 Zoom lens system
11/17/1992	US5164859 Zoom lens system for use with a compact camera having a wide coverage of angles
11/17/1992	US5164757 Zoom lens barrel and camera incorporating such barrel
11/10/1992	US5162947 Zoom lens system for use with a compact camera having a wide coverage of angles
11/10/1992	US5162946 Zoom viewfinder
11/10/1992	US5162844 Image projection apparatus
10/1992
10/27/1992	US5159494 Zoom lens system
10/27/1992	US5159493 Retrofocus type wide angle lens comprising a fixed group and movable corrective and rear groups
10/20/1992	US5157552 Zoom lens system for a limited conjugate distance
10/20/1992	US5157550 Vari-focal lens system
10/13/1992	US5155630 Zoom lens system
10/13/1992	US5155629 Zoom lens system
10/13/1992	US5155517 Optical system with improved field mask
10/08/1992	DE4209901A1 Lens system for microscope - has equipment to adjust overall focal length of system
10/06/1992	US5153777 Compact-size zoom lens system
10/06/1992	US5153776 Wide angle zoom lens system
09/1992
09/30/1992	EP0506108A1 Zoom lens of rear focus type
09/30/1992	EP0506071A1 Lens system for optical reader
09/29/1992	US5151820 Zoom lens
09/15/1992	US5148321 Compact zoom lens system
09/15/1992	US5148308 Real image type vari-focal viewfinder
09/08/1992	US5146366 Four-group zoom lens
09/03/1992	DE4106534A1 Telephoto-lens with front and rear focusing groups - involves focussing length of focussing group forming, with front group, tele-lenses of different total focussing length
09/01/1992	US5144493 Zoom lens barrel and camera incorporating such barrel
09/01/1992	US5144489 Compact wide-angle zoom lens
09/01/1992	US5144488 Zoom lens
09/01/1992	US5144480 Keplerian zoom finder optical system
09/01/1992	US5144476 All-reflective zoom optical system
09/01/1992	US5144356 Temperature compensated infrared optical imaging system
09/01/1992	US5144349 Real image mode variable magnification finder optical system
08/1992
08/12/1992	EP0472597A4 Continuously focusable optical system incorporating an afocal variator optical system
08/12/1992	CN2112839U Camera lens
08/11/1992	US5138493 Zoom lens system
08/11/1992	US5138492 Rear-focus type zoom lens suppressing fluctuation of aberration
08/04/1992	US5136431 Zoom lens of the internal focus type
08/04/1992	US5136430 Inner focusing type telephoto zoom lens
07/1992
07/30/1992	DE4202452A1 Lens system for camera - has group of lenses which can be moved at right angles to optical axis
07/28/1992	US5134524 Rear focus type zoom lens
07/28/1992	US5134523 Zoom beam expander

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