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)
06/1985
06/18/1985US4523813 Zoom lens system
06/11/1985US4522471 Adapter lens system for use with photographic cameras
05/1985
05/21/1985US4518228 Zoom lens
05/21/1985US4518227 Method of widening the angular field of a photographic objective lens
05/15/1985EP0140923A1 Multifocal objective.
05/15/1985EP0140918A1 Additional divergent optical system
05/14/1985US4516839 Zoom lens system
05/07/1985US4515446 Zoom objective
04/1985
04/30/1985US4514051 Rear conversion lens
04/30/1985US4514049 Zoom lens system for finite conjugate distances
04/16/1985US4511223 Telecentric variable power illumination system
04/09/1985US4509833 High variable magnification wide angle zoom lens
03/1985
03/26/1985US4506958 Compact zoom lens system
03/12/1985US4504125 Zoom lens system
03/12/1985US4504124 Zoom lens system
02/1985
02/26/1985US4501475 Zoom lens
02/12/1985US4498741 Compact, wide magnification-variable zoom lens system
02/05/1985US4497617 For projecting an image of an object
02/05/1985US4497547 Zoom lens
01/1985
01/29/1985US4496223 Compact afocal attachment for use with photographic objectives
01/22/1985US4494828 Zoom lens system of relatively high zoom ratio ranging to wide angle photography
01/08/1985US4492437 Zoom lens system
01/01/1985US4491395 Zoom lens system
12/1984
12/25/1984US4490017 High-speed zoom lens
12/11/1984US4488039 Imaging system having vari-focal lens for use in endoscope
12/04/1984CA1178834A1 Variable focal length projection lens for use on overhead projectors
11/1984
11/27/1984US4484799 Wide angle zoom lens
11/13/1984US4482218 Zoom lens
11/08/1984WO1984004399A1 Additional divergent optical system
10/1984
10/23/1984US4478497 Attachment lens system
10/23/1984US4478496 Zoom lens
10/16/1984US4477153 Ultrawide angle zoom objective
10/11/1984WO1984003952A1 Multifocal objective
10/02/1984US4474462 Variable magnification type optical copier in which the copying size can be increased or decreased
10/02/1984US4474461 Copying apparatus having a magnification changing function
10/02/1984US4474436 Finite distance zoom lens system
09/1984
09/25/1984US4473278 Aperture structure in zoom lens
09/18/1984US4472033 Zoom lens having an automatic focus detecting device
09/04/1984US4469412 Wide angle zoom lens
09/04/1984US4469396 Afocal dual magnification refractor telescopes
08/1984
08/28/1984US4468107 Macro-focussing rear converter lens
08/28/1984US4468098 Compact telephoto zoom lens system
08/28/1984US4468097 Four-group great aperture ratio zoom lens
08/28/1984US4468096 Four-group telephoto zoom lens
08/21/1984US4466708 Zoom lens
08/21/1984US4466707 Variable magnification lens system
08/14/1984US4465343 Zoom lens system
08/14/1984US4465342 Zoom lens
08/07/1984US4464023 Large relative aperture objective
07/1984
07/31/1984US4462664 Zoom lens
07/17/1984US4460251 Zoom lens focusing system
07/03/1984US4457591 Single operator macro-focusing zoom lens barrel
06/1984
06/26/1984US4456342 Zoom lens barrel capable of close up photography
06/26/1984US4456341 Zoom objective
06/26/1984US4456340 Optical system for focal length conversion
06/05/1984US4452513 Zoom lens capable of close range photography and method of focusing the same to a short distance
06/05/1984US4452512 Wide angle zoom lens system
05/1984
05/29/1984US4451124 Photographic lens of continuously variable focal length
05/22/1984US4449791 Three-group zoom lens
05/15/1984US4448495 Zoom lens system capable of very close range photography
05/08/1984US4447135 Zoom lens system
05/01/1984US4445756 Reflex zoom lens barrel
04/1984
04/24/1984US4444472 Lens system having color separation optics
04/17/1984US4443068 Reflecting telephoto zoom lens system
03/1984
03/27/1984US4439020 Sunrays focusing apparatus
03/27/1984US4439018 Zoom lens structure
03/27/1984US4439017 Zoom lens
03/20/1984US4437734 Lenses capable of close-up photography
03/20/1984US4437733 Zoom lens
03/20/1984US4437732 Wide magnification-variable range zoom lens system
03/14/1984EP0102739A1 Zoom lens operating mechanisms
02/1984
02/21/1984US4432615 Zoom lens
02/07/1984US4429958 Relatively wide angle telephoto type lens system
02/07/1984US4429957 Panoramic zoom lens assembly
01/1984
01/24/1984US4427268 Variable magnification ratio lens
12/1983
12/27/1983US4422734 Photographic lens system having an auxiliary lens
12/13/1983US4420226 Zoom lens of short total length
11/1983
11/22/1983US4417281 Image magnification control mechanism for facsimile zoom lens
11/22/1983US4416518 Objective comprising aspherical surfaces, whose focal length is variable over a wide range
11/08/1983US4413887 Zoom lens system
11/01/1983US4412725 Rear stop diaphragm zoom lens
10/1983
10/25/1983US4411498 Zoom lens barrel
10/11/1983US4408841 Variable power lens system for copying
10/04/1983US4407567 Objective having a variable focal length
09/1983
09/27/1983US4406524 Afocal optical device
09/27/1983US4406523 Compact wide-angle zoom lens
09/27/1983US4406522 Variable magnification lens
08/1983
08/23/1983US4400064 Zoom lens
08/16/1983US4398808 Compact zoom lens of high magnification
08/16/1983US4398807 Zoom lens
08/10/1983EP0085308A1 System with variable front focal distance and focal length
07/1983
07/26/1983US4395092 Compact telephoto zoom lens
07/26/1983CA1150544A1 Objective comprising aspherical surfaces, whose focal length is variable over a wide range
07/19/1983US4394072 Zoom lens
07/19/1983US4394071 Lens system with fill-in lens
07/12/1983US4392724 Lens system capable of short distance photography
07/05/1983US4391493 Method to increase focal distance at telephotographic side of a zoom lens system
06/1983
06/28/1983US4390248 Wide angle zoom lens
06/22/1983EP0081997A1 Compact zoom lens
06/14/1983CA1147999A1 Gas zoom lens
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