| Patents for G02B 3 - Simple or compound lenses (21,564) |
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| 05/07/1991 | US5013144 Light source having a multiply conic lens |
| 05/07/1991 | US5013143 Lens |
| 05/07/1991 | US5013135 Head-up display with two fresnel lenses |
| 05/07/1991 | US5013133 Diffractive optical imaging lens systems |
| 05/07/1991 | CA2025396A1 Optical device and method |
| 05/02/1991 | WO1991006019A1 Gradient index optical systems |
| 05/02/1991 | EP0425251A2 Image display apparatus |
| 05/02/1991 | EP0424520A1 Method for fabricating a transparent polymer lens with modulated refraction index. |
| 05/02/1991 | DE4033979A1 Sound image viewfinder for camera - uses multiple lenses of plastics materials to compensate for optical aberrations |
| 04/18/1991 | WO1991005275A1 Refractive index distribution type plastic optical transfer member and its production method |
| 04/18/1991 | WO1991005274A1 Refractive index distribution type plastic optical transfer member and its production method |
| 04/18/1991 | WO1991004846A1 Method and apparatus for manufacturing aspherically shaped small lenses |
| 04/17/1991 | EP0422206A1 Lens arrays for light sensitive devices |
| 04/16/1991 | US5008892 Semiconductor laser diodes |
| 04/04/1991 | WO1991004504A1 Converging filter and method of producing same |
| 04/03/1991 | EP0420196A2 Display apparatus |
| 04/02/1991 | US5005039 Autofocusing camera |
| 04/02/1991 | US5004330 Aspherical glass lens element formed by a low dispersion glass material |
| 04/02/1991 | US5004328 Spherical lens and imaging device using the same |
| 04/02/1991 | US5004319 Crystal diffraction lens with variable focal length |
| 03/27/1991 | EP0419029A2 A multiple parallel channel rotary optical coupler |
| 03/26/1991 | US5002383 Polyprismatic lens for enhancing human ocular motility |
| 03/26/1991 | US5002375 Variable pel density print head for electrophotographic printers |
| 03/26/1991 | US5002374 Finite conjugation large-aperture lens with aspherical surfaces |
| 03/20/1991 | EP0418092A2 Bar lens with smaller thickness for greater rate of magnificaton |
| 03/15/1991 | CA2025062A1 Bar lens with smaller thickness for greater rate of magnification |
| 03/12/1991 | US4999142 Molding to form lenses, supports, insertion a core, filling with a transparent resin |
| 03/12/1991 | US4998806 Image reading apparatus |
| 03/12/1991 | US4998794 Meniscus lens for coupling an excimer beam into an optical fiber |
| 03/07/1991 | WO1991001012A3 Double axial gradient lens and process for fabrication thereof |
| 03/06/1991 | EP0415640A2 High efficiency lamp or light accepter |
| 03/06/1991 | EP0415286A2 Method of manufacturing correction lens for forming phosphor screen on faceplate of color cathode ray tube |
| 03/05/1991 | US4998191 Illuminating optical device |
| 03/05/1991 | US4998011 Flat plate focus sensing apparatus |
| 02/28/1991 | DE4026312A1 Optical element with refractive index distributions - produced by density gradients of constituents |
| 02/21/1991 | WO1991002270A1 Method and apparatus for providing a mosaic lens array |
| 02/19/1991 | US4994664 Optically coupled focal plane arrays using lenslets and multiplexers |
| 02/19/1991 | US4993807 Vehicle lamp lens |
| 02/13/1991 | EP0412751A2 Diffractive lens |
| 02/07/1991 | WO1991001508A1 Progressive spectacle glass with positive action in the distance portion |
| 02/05/1991 | US4991073 Lighting lens |
| 02/05/1991 | US4989958 Focus adjusting apparatus provided with a focus lens member formed of polymer gel substance having electro-reactive deformability |
| 01/30/1991 | EP0409825A1 Lens for receiving and/or transmitting infrared radiation |
| 01/29/1991 | US4989226 Layered devices having surface curvature |
| 01/29/1991 | US4988274 Method and apparatus for producing an optical element |
| 01/24/1991 | WO1991001019A1 Step-index light guide and gradient index microlens device for led imaging |
| 01/24/1991 | WO1991001012A2 Double axial gradient lens and process for fabrication thereof |
| 01/23/1991 | EP0409619A2 A projection type image display apparatus |
| 01/22/1991 | US4987487 Method of stereoscopic images display which compensates electronically for viewer head movement |
| 01/22/1991 | US4986939 Method for the production of cylindrically symmetric bodies with a radial gradient |
| 01/22/1991 | US4986651 Overhead projector with centerless Fresnel lens reflective stage |
| 01/22/1991 | US4986641 Retrofocus objective lens and optical scanning device provided with such a lens |
| 01/17/1991 | DE3922153A1 Optical sensor with electro=optical converter and lens - uses low-dispersion property of aspherical lens whose two ellipsoidal faces have major semi-axes orthogonal |
| 01/16/1991 | EP0408445A1 Optical device for image magnification |
| 01/15/1991 | US4985719 Apparatus for preventing static electricity of plastic lens |
| 01/15/1991 | US4984858 Light beam scanning optical system |
| 01/14/1991 | CA2036377A1 Double axial gradient lens and process for fabrication thereof |
| 01/13/1991 | CA2020819A1 Optical system for enlarging images |
| 01/02/1991 | CN1011089B Projection screen having high resolution and good mechanical stability |
| 01/02/1991 | CN1011086B Contour lenses and mfr. method therefor |
| 01/01/1991 | US4982222 Imaging system utilizing an oscillating gradient index lens array |
| 01/01/1991 | US4982219 Focus detecting device |
| 01/01/1991 | US4981342 Multifocal birefringent lens system |
| 12/27/1990 | EP0404289A2 Three dimensional image display device |
| 12/27/1990 | EP0403556A1 A sign readable at speed |
| 12/27/1990 | EP0396538A4 Method of making a thin lens |
| 12/27/1990 | CA1278203C Non-reflective image display device |
| 12/26/1990 | CN1048106A Optical illumination system and projection apparatus comprising such a system |
| 12/20/1990 | DE4017541A1 Composite optical lens construction |
| 12/19/1990 | EP0248823B1 Optical sensing system |
| 12/19/1990 | CN1047925A Small aperture multifocal lens |
| 12/12/1990 | EP0401608A2 Lens array |
| 12/05/1990 | CN2066994U Convenient variable focal lense |
| 12/04/1990 | US4974947 Refractive index distribution type meniscus lens and optics |
| 11/28/1990 | CN1047395A Retrofocus objective lens and optical scanning device provided with such lens |
| 11/27/1990 | CA1276827C Linear diverging lens |
| 11/27/1990 | CA1276779C Microlens manufacture |
| 11/22/1990 | EP0398431A1 Retrofocus objective lens and optical scanning device provided with such a lens |
| 11/22/1990 | EP0398082A1 Method for optical lens production |
| 11/20/1990 | US4971423 Gradient-index-type optical device |
| 11/15/1990 | WO1990013832A1 Method for fabricating a transparent polymer lens with modulated refraction index |
| 11/15/1990 | DE3913398A1 Fluid lens - with infinitely variable focal distance by varying the curvature of two membranes enclosing the fluid |
| 11/14/1990 | EP0396538A1 Method of making a thin lens |
| 11/13/1990 | WO1990013981A1 High definition, three-dimensional television |
| 11/13/1990 | US4970381 Integrated optics facsimile apparatus |
| 11/13/1990 | US4969707 Fiber optics viewing device |
| 11/13/1990 | CA2055457A1 High definition, three-dimensional television |
| 11/06/1990 | US4968874 Optical pickup with astigmatism correcting lens |
| 11/01/1990 | WO1990013146A1 Lens arrays for light sensitive devices |
| 10/31/1990 | EP0395156A1 Optical illumination system and projection apparatus comprising such a system |
| 10/31/1990 | EP0394867A2 Integrated optics facsimile apparatus |
| 10/30/1990 | US4966831 Lens arrays for light sensitive devices |
| 10/30/1990 | US4966646 Method of making an integrated, microminiature electric-to-fluidic valve |
| 10/30/1990 | US4966448 Optimized apochromatic lens systems using inexpensive lens elements |
| 10/25/1990 | DE3590114C1 Optisches Element als Sichtfenster An optical element as a viewing window |
| 10/24/1990 | EP0393639A2 Small aperture multifocal |
| 10/24/1990 | EP0354961A4 Integrally-pressed collimator |
| 10/23/1990 | US4964703 Image-forming lens |
| 10/18/1990 | DE4011969A1 Ion exchange treatment of optical glass - esp. to produce lens with axial refractive index gradient |
| 10/17/1990 | EP0392479A1 Optical lens or lens system with variable servo control focusing as well as progressively varying focal power |