Patents
Sitemap › G02 - Optics › G02B - Optical elements, systems, or apparatus › G02B 9 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or
Patents for G02B 9 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or (5,791)
01/1990
01/09/1990US4892395 Collimating optical system using a spherical lens
12/1989
12/12/1989US4886342 Photographic lens device
11/1989
11/22/1989CN1037404A Three-element symmetrical projection objective lens for enlarger
11/14/1989US4880298 Microscope objective
11/07/1989US4878744 Three dimensional reflex lens systems
10/1989
10/31/1989US4877314 Objective lens system for endoscopes
10/03/1989US4871243 Photographic lens of improved near distance performance
09/1989
09/19/1989US4867555 Retrofocus lens for overhead projector
09/19/1989US4867549 Re-imaging optical system
09/05/1989US4863251 Double gauss lens for a raster input scanner
08/1989
08/29/1989US4861136 Optical communication systems using fabry-perot cavities
08/22/1989US4859044 Large aperture lens system for use in a copier
08/22/1989US4859040 Optical system having gradient-index lens and method for correcting aberrations
08/15/1989US4858002 Wide-angle objective for endoscopes
08/15/1989US4856881 Photographic lens of long back focal length
08/08/1989US4854686 Apochromat type objective lenses
08/01/1989US4852981 Imaging lens system comprising a distributed index lens and a plano-convex lens
08/01/1989US4852980 Optical system
07/1989
07/04/1989US4844601 Three-dimensional reflex lens systems
06/1989
06/20/1989US4840467 Compact zoom lens system with a high zooming ratio
06/20/1989US4840466 Changeable magnification optical system
06/15/1989DE3833246A1 Apochromat (apochromatic objective)
06/13/1989US4838680 Optical system for retinal camera
06/06/1989US4836665 Objective lens
05/1989
05/23/1989US4832472 Mapping lens
05/16/1989US4830476 Compact zoom lens system
04/1989
04/27/1989DE3825435A1 Large apochromatic lens unit - has six lenses in four groups to provide simultaneous correction of aperture and gauge errors
04/25/1989US4824224 Lens system for a cathode ray tube projection system
04/19/1989EP0312341A2 High resolution imagery systems
04/12/1989CN2035891U Small and thin camera lens
03/1989
03/28/1989US4815834 Objective lens system
03/14/1989US4812027 Gauss type near focus lens
03/14/1989US4812026 Telephoto lens system
03/07/1989US4810074 Photographic lens system
03/07/1989US4810070 Lens system having a good image performance for white light
02/1989
02/21/1989US4806001 Objective for an endoscope
01/1989
01/26/1989WO1989000710A1 Spectacle lens with astigmatic effect
01/25/1989EP0300640A2 Optical communication systems using Fabry-Perot cavities
01/25/1989EP0300415A1 Spectacle lens having an astigmatic effect
01/03/1989CA1247906A1 Color-corrected optical systems
12/1988
12/28/1988CN88207254U Zoom lens
12/28/1988CA1247422A Spectrally filtered lens producing plural f-numbers with different spectral characteristics
12/20/1988US4792219 Large aperture long focus macro lens system
12/20/1988US4792216 Photographic lens system
12/13/1988US4790638 Lens system for projecting images of microfilm
11/1988
11/29/1988US4787724 Triplet type objective with a diaphragm arranged behind the lens system
11/29/1988US4787723 Ultra-wide angle F-θ lens system
11/29/1988US4787721 Photographic lens system
11/23/1988CN88202401U Refracting-reflecting erect image telescopic system
11/22/1988US4786153 Large-aperture macro lens system
11/22/1988US4786152 Telephoto lens system
11/15/1988US4784480 Focusing-in-part lens system
11/09/1988EP0215118A4 Compact see-through night vision goggles.
11/09/1988CN87103061A Light-strengthening and amplifying photographical device
11/08/1988US4783157 Symmetrical wide angle lens with improved illumination uniformity
11/08/1988US4783154 Image-transmitting optical system
11/01/1988US4781449 Wide angle reading lens system
10/1988
10/25/1988CA1243522A1 Microlens
10/19/1988EP0286733A2 Wide-angle lens for endoscopes
10/18/1988US4778256 Impregnating porous transparent base with photo-decomposable compounds; radiation of decreasing intensity
10/11/1988US4776682 Projection lens system with variable air space
09/1988
09/27/1988US4773746 Reading lens system
09/27/1988US4773745 Compact wide-angle objective
09/20/1988US4772108 Macro lens system
09/20/1988US4772105 Graded refractive index lens system
08/1988
08/23/1988US4766498 Image projection system
07/1988
07/20/1988CN87214688U Three lenses type photographic objective with rear optical grating
07/19/1988US4758071 Collimator lens
07/06/1988EP0273476A1 Image projection system
07/05/1988US4755039 Focusing lens
07/05/1988US4755029 Objective for an endoscope
06/1988
06/29/1988EP0272719A1 Projection lens system
06/28/1988US4753524 Lens for use with an optical disk
06/28/1988US4753523 Low magnification projection objective lens
06/28/1988US4753522 Plastic lens assembly for use in copying machines
05/1988
05/31/1988US4747677 Lens system having aberrations corrected at near distance focusing
05/31/1988US4747676 Wide-angle seven-element lens system
05/17/1988US4744641 Telephoto lens assembly for overhead projector
05/17/1988US4744620 Optical coupler
05/17/1988CA1236719A1 Chromatic aberration corrected gradient index lens system
04/1988
04/26/1988US4740067 Projection lens system
04/19/1988US4738518 Three dimensional reflex lens systems
04/19/1988US4738517 Copying lens with a wide angle of view
04/06/1988EP0262407A1 Compact wide angle lens
03/1988
03/15/1988US4730905 Eyepiece having a radial gradient index lens
01/1988
01/26/1988US4721373 Lens system for use with an optical disk
01/26/1988US4721369 Gradient index single lens
01/12/1988US4719488 Copying machine
01/07/1988EP0250635A1 Method of producing a gradient-index lens
01/05/1988US4717245 High relative aperture Gauss type lens
12/1987
12/08/1987US4711536 Color separating lens composed of three lens units
11/1987
11/24/1987US4708445 Large aperture ratio photographic lens system
11/19/1987EP0246108A2 An optical device
11/10/1987US4705364 Wide angle lens
11/03/1987US4704018 Eye fundus observing and photographing apparatus
11/03/1987US4704011 Three-glass photographic objective color-corrected at four wavelengths
10/1987
10/27/1987US4702568 Photographic lens with large aperture ratio
10/21/1987EP0241558A1 Method of manufacturing gradient index lens
09/1987
09/22/1987US4695134 Compact photographic lens
09/22/1987US4695132 Fθ single lens
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