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)
09/1988
09/28/1988EP0140923B1 Multifocal objective
09/27/1988US4773744 Compact zoom lens system with a high zooming ratio
09/20/1988US4772108 Macro lens system
09/20/1988US4772106 Compact zoom lens system
09/13/1988US4770511 Zoom lens capable of accomplishing macro-photography
09/13/1988US4770510 Zoom lens
09/13/1988US4770509 Zoom lens comprising two groups of lenses
09/13/1988US4770508 Conversion lens releasably attached behind master lens
09/06/1988US4768868 Rear conversion lens
08/1988
08/23/1988US4765722 Zoom lens
08/17/1988EP0278126A1 Zoom lens for an electronic camera
08/16/1988US4764001 Retrofocus-type objective for an endoscope
08/16/1988US4763998 Compact zoom lens
07/1988
07/26/1988US4759617 Zoom lens system
07/19/1988US4758073 Zoom lens
07/19/1988US4758072 Gas zoom lens assembly
07/12/1988US4757336 View finder of variable magnification
07/12/1988US4756609 Four component compact zoom lens
07/12/1988US4756608 High zoom-ratio finite-distance zoom lens
07/06/1988EP0273568A1 Gas zoom lens assembly
06/1988
06/21/1988US4752121 Zoom lens
06/14/1988US4751539 For observing a real image
06/14/1988US4750820 Zoom lens having magnification factors in the range of 20X to 47X for micrographic applications
06/07/1988US4749268 Autofocusing zoom lens
06/07/1988US4749267 Large aperture ratio zoom lens system
06/07/1988US4749266 Compact zoom lens having a large aperture and good aberation correction over an extended zooming range
06/07/1988US4749265 Zoom lens
06/07/1988US4749264 Front conversion lens system
06/07/1988US4749263 Rear conversion lens system
05/1988
05/24/1988US4746204 Zoom lens having magnification factors in the range of 14X to 32X for micrographic applications
05/10/1988US4743102 Zoom lens having magnification factors in the range of 12X to 24X for micrographic applications
05/10/1988US4743101 Rear-attachment lens system
05/03/1988US4741605 Multifocal objective
04/1988
04/26/1988US4740063 Telephoto zoom lens system
04/06/1988EP0262421A1 Projection optics with variable focal distance
04/05/1988US4735496 Five-element copying zoom lens system
04/05/1988US4735493 Wipe-angle zoom lens system
03/1988
03/29/1988US4733952 Small zoom lens
03/29/1988US4733951 Zoom lens having magnification factors in the range of 6.5x to 14x for micrographic applications
03/15/1988US4730908 Zoom lens
03/15/1988US4730907 Compact zoom lens system
03/15/1988US4730906 Bright wide-angle zoom lens
03/09/1988CN87207206U Slope focusing lens component for slide projector
03/08/1988US4730199 Photographic apparatus
03/08/1988US4729643 Telephoto zoom lens system for camera
03/01/1988US4728179 Rear conversion lens system
02/1988
02/23/1988US4726668 Zoom lens of short total length
02/23/1988US4726667 Focusing method in optical lens system with variable focal length
02/23/1988US4726666 Two-group zoom lens
02/23/1988US4726665 Compact wide-angle zoom lens
02/16/1988US4725130 Zoom finder
01/1988
01/26/1988US4721371 Variable focal length lens system
01/19/1988US4720181 Large aperature ratio zoom lens system
01/19/1988US4720180 High magnification range zoom lens
01/19/1988US4720179 Zoom lens system for use with a compact camera
01/19/1988US4720169 Lens for macro-photography
01/19/1988US4720167 Lens barrel with lens shutter
01/07/1988EP0250686A1 Objective system with a variable focal length
12/1987
12/29/1987US4715693 Vari-focal photographic lens system of rear lens group exchange type
12/29/1987US4715692 Varifocal type finder
12/15/1987US4712883 Rear focus zoom lens
12/15/1987US4712882 Variable focal length lens
12/08/1987US4711534 Zoom lens able to obtain focal lengths beyond the zooming range
12/08/1987US4711533 Standard zoom lens system having a large aperture ratio
12/01/1987US4710007 Camera system with lens coupling member
12/01/1987US4709997 Zoom lens
11/1987
11/26/1987DE3617416A1 Device for exercising the ocular muscles
11/24/1987US4708444 Photographic objective
11/24/1987US4708443 Zoom lens system
11/24/1987US4708442 Varifocal lens system
11/17/1987US4707103 Optical system of variable magnification
11/17/1987US4707082 Variable magnification copying lens system
11/10/1987US4705380 Automatic focusing device
11/10/1987US4705363 Aberrational deterioration prevented zoom lens
11/10/1987US4705343 Imaging a scene from an aircraft
11/05/1987WO1987006717A1 Infrared afocal zoom telescope
10/1987
10/27/1987US4702567 Zoom lens
10/20/1987US4701034 Large aperture zoom lens system
10/20/1987US4701033 Variable focal length lens system
10/13/1987US4699475 Zoom lens including a wide angle of view
10/13/1987US4699474 Compact zoom lens
09/1987
09/29/1987US4696553 Zoom lens having a large zoom ratio
09/22/1987US4695133 High range zoom lens
09/22/1987US4695119 Infrared optical system
09/15/1987US4693566 Zoom lens system
09/08/1987US4692015 Short focal lens array with multi-magnification properties
09/02/1987EP0234582A2 Intermediate optical device
09/01/1987US4690513 Wide angle high range zoom lens
08/1987
08/19/1987CN86207521U Multi-purpose observation speculum
08/18/1987US4687303 Zoom lens system
08/18/1987US4687302 Zoom lens
08/04/1987US4684223 Zoom lens of the rear focusing type
07/1987
07/30/1987DE3702188A1 Optical magnification changing system
07/28/1987US4682860 Ultrasmall size zoom lens
07/21/1987US4681406 Zoom lens assembly
07/14/1987US4679913 Vari-focal objective lens of short total length
07/07/1987US4678899 Afocal variable magnification optical system
07/07/1987US4678311 Multi-magnification short focal length imaging system
07/07/1987CA1223950A1 Variable power lens system
06/1987
06/30/1987US4676581 Infra-red lenses
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