Patents
Sitemap › G02 - Optics › G02B - Optical elements, systems, or apparatus › G02B 5 - Optical elements other than lenses
Patents for G02B 5 - Optical elements other than lenses (93,064)
04/1991
04/10/1991EP0421352A2 Optical attenuator
04/09/1991US5006409 Optical element used to reduce the image perception time
04/09/1991US5005974 Projecting tessellator
04/09/1991US5005968 Contrast decreasing apparatus in image forming optical system
04/09/1991US5005962 Rearview mirror
04/09/1991US5005947 Device for fixing an optical member such as a filter to a support
04/09/1991US5005926 Ballistic protective laser shield
04/07/1991CA2020310A1 Optical attenuator
04/04/1991WO1991004519A1 Achromatic hologram optical system
04/04/1991WO1991004508A2 Helmet mounted display
04/04/1991WO1991004506A1 Optical filters
04/04/1991WO1991004504A1 Converging filter and method of producing same
04/03/1991EP0420383A2 Astigmatism generating device
04/03/1991EP0420261A2 Record carrier with an optical variable element and method of producing it
04/03/1991EP0420233A2 Novel phthalic acid derivative metal salt and shading and light-responsive plate containing the metal salt
04/03/1991EP0420229A1 A reverse light blocking hologram for a center high mounted stoplight
04/03/1991EP0420124A2 Optical unit for use in laser beam printer or the like
04/03/1991EP0419518A1 X-ray lens and collimator
04/03/1991CN2074462U Multi-image mirror
04/03/1991CN1050445A Lens and glass corpuscles combined retrogressive reflector
04/02/1991US5004785 Light-diffusing methacrylic resin and process for production thereof
04/02/1991US5004673 Method of manufacturing surface relief patterns of variable cross-sectional geometry
04/02/1991US5004327 Light-polarizing material in the form of sheets or of a web and a method for the manufacture of the material
04/02/1991US5004308 Rugate reflector
03/1991
03/27/1991EP0419257A2 Optical head apparatus incorporating a polarizing element
03/27/1991EP0419241A2 Transparent overlay for protecting a document from tampering
03/27/1991EP0419069A2 System for selective laser assisted plating
03/27/1991EP0418519A2 Reflecting mirror for a laser beam and laserbeam welding apparatus including the same
03/27/1991EP0418489A2 Optical retroreflector
03/26/1991US5003600 Diffraction gratings used as identifying markers
03/26/1991US5002701 Iodine and Halide Complex of a Pyrazinedicarboxylic Acid
03/26/1991US5002379 Bypass mirrors
03/26/1991US5002375 Variable pel density print head for electrophotographic printers
03/26/1991US5002371 Low coupling beam splitter and laser power or position monitor using same
03/26/1991US5002365 Beam splitter for color imaging apparatus
03/26/1991US5002364 Stereoscopic process and apparatus using different deviations of different colors
03/26/1991US5002347 Stepped thickness spectral filter for focal plane flattening
03/21/1991WO1991003816A1 X-ray phosphor imaging screen and method of making same
03/21/1991WO1991003747A1 Diffraction grating and method of manufacture
03/20/1991EP0418034A2 Improved thermal beacon assembly
03/20/1991EP0417709A2 Spectrum measuring equipment
03/19/1991US5001609 Nonimaging light source
03/19/1991US5001608 Therapeutic lamp emitting polarized light
03/19/1991US5000529 Optical scanner
03/19/1991US5000528 Scratch resistant optical interference film
03/19/1991US5000527 Multiple waveband optical element
03/19/1991CA1281582C Color filter elements
03/13/1991EP0416931A2 Medical applications for an optical device
03/13/1991EP0416251A2 Controlled method of manufacture of multiple-notch rugate filters
03/13/1991EP0416157A1 Polarizer
03/13/1991EP0416105A1 Selective interference light filter and optical device using it
03/12/1991US4999487 Dual focus
03/12/1991US4999234 Holographic optical data storage medium
03/12/1991US4999094 Method for manufacturing a color member
03/12/1991US4998806 Image reading apparatus
03/12/1991US4998787 Method of fabricating a multiple holographic lens
03/12/1991US4998786 Method of producing holograms particularly for holographic helmet displays
03/12/1991US4998785 Decorative surface and a method of producing it
03/12/1991US4998784 Automotive windshield for a head up display system
03/07/1991WO1991002991A1 Diffraction grating assembly
03/07/1991WO1991002990A1 Double-sided cat's eye
03/07/1991WO1991002954A1 Varied space diffraction grating and in-focus monochromator
03/07/1991WO1991002923A1 Infrared radiation absorbing blue glass composition
03/06/1991EP0415735A2 Optical switch and color selection assembly
03/06/1991EP0415242A2 Enhanced resolution, multiply-exposed reflection
03/06/1991EP0415236A2 Optical unit for use in laser beam printer or the like
03/05/1991US4998011 Flat plate focus sensing apparatus
03/05/1991US4997747 Method for the formation of a diffraction grating
03/05/1991US4997241 Dielectrics of compressive and tensile stresses
03/05/1991CA1280921C Optical wavelength compounding/dividing device
03/01/1991CA2024163A1 Optical switch and color selection assembly
02/1991
02/27/1991CN1049564A Improved holographic notch filters
02/26/1991US4996427 Imager for simultaneously obtaining two images of differing color bands using a single photodetector area array
02/26/1991US4996105 Used as electromagnetic wave shielding window glass
02/26/1991US4995715 Diffractive multifocal optical device
02/26/1991US4995714 Multifocal optical device with novel phase zone plate and method for making
02/26/1991US4995701 Anti-glare filter with improved viewing area
02/26/1991US4995700 Cryogenic shutter
02/26/1991US4995198 Method for making a reflectance calibration plate having a near-Lambertian surface
02/26/1991CA1280731C Composite reflecting mirror for headlamp
02/22/1991WO1991002992A1 Methods of and apparatus for manipulating electromagnetic phenomenon
02/22/1991CA2065368A1 Methods of and apparatus for manipulating electromagnetic phenomenon
02/20/1991EP0413365A2 Method of manufacturing a diffraction grating
02/20/1991CN1049412A Grating-maaking method of rainbow light
02/19/1991US4994948 Concave light reflector
02/19/1991US4994947 Reflector and lighting fixture comprising same
02/19/1991US4994907 Color sensing CCD with staggered photosites
02/19/1991US4994664 Optically coupled focal plane arrays using lenslets and multiplexers
02/19/1991US4993824 Thermal mapping compensated mirror and method of making the same
02/19/1991US4993808 Directed optical signaling
02/19/1991US4993791 Powder metal mirror
02/19/1991US4993790 Holographic lenticular screen stereoscopic avoinics display apparatus
02/19/1991US4993789 Dual wavelength polarization selective holographic optical element
02/19/1991US4993469 Device for protection from the sun
02/19/1991CA2021655A1 Infrared radiation absorbing blue glass composition
02/13/1991EP0412751A2 Diffractive lens
02/13/1991CN2071345U High sharpness stereo tv lens
02/13/1991CN1049230A Total reflection reflector of single machine shooting and showing ring film
02/13/1991CN1011575B Therapeutic lamp emitting polarized light
02/12/1991US4992699 X-ray phosphor imaging screen and method of making same
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