1
Ronald T Smith: Quarter-wave film for brightness enhancement of holographic thin taillamp. Raytheon Company, Leonard A Alkov, Glenn H Lenzen Jr, April 28, 1998: US05745266 (142 worldwide citation)

A holographic thin rear exterior lamp for a vehicle including a light pipe (11) having first and second opposing surfaces (11a, 11b), a rear exterior lamp hologram (13, 113) attached to one of the first and second surfaces of the light pipe, a polarization rotating retarder film (16, 116) attached t ...


2
Ronald G Hegg, Ronald T Smith, Mao Jin Chern, John J Ferrer: Automotive instrument virtual image display. Hughes Aircraft Company, L A Alkov, W K Denson Low, January 11, 1994: US05278532 (89 worldwide citation)

A compact, inexpensive and mass-producible optical display system for an automobile creates a highly visible and sharp, high contrast and pleasing, multi-color magnified virtual image of a primary instrument cluster at a viewing distance which is greater than the actual optical distance between the ...


3
Jan Grinberg, Ronald T Smith: Color display device and method using holographic lenses. Hughes Aircraft Company, V D Duraiswamy, A W Karambelas, February 28, 1989: US04807978 (85 worldwide citation)

A system and method are described for achieving a high efficiency, full color display using color sensitive lenses such as holographic lenses. A lens assembly is composed of discrete lens elements (1, 2, 3) which are sensitive to different wavelengths bands of light. Each lens element (1, 2, 3) focu ...


4
Mao Jin Chern, Ronald T Smith, John W Peters: Process for forming a graded index optical material and structures formed thereby. Hughes Aircraft Company, Mary E Lachman, A W Karambelas, October 8, 1985: US04545646 (61 worldwide citation)

A process for depositing on the surface of a substrate a layer of a chosen material having continuous gradations in refractive index in a predetermined periodic pattern. The substrate is exposed to two vapor phase reactants which react upon radiation-inducement to produce the chosen material, and th ...


5
Ronald T Smith: Holographic backlight for flat panel displays. Hughes Electronics, Leonard A Alkov, Wanda K Denson Low, July 22, 1997: US05650865 (55 worldwide citation)

An improved holographic backlight and liquid crystal display system. The holographic backlight comprises a cold cathode fluorescent tube for providing white light, and a light pipe disposed to receive the white light. A phase retarding film layer is attached to a first surface of the light pipe. A d ...


6
Mao Jin Chern, John J Ferrer, Ronald T Smith: Graded index asperhic combiners and display system utilizing same. Hughes Aircraft Company, Leonard A Alkov, Wanda K Denson Low, November 6, 1990: US04968117 (54 worldwide citation)

An improved optical combiner useful in many applications is disclosed. The combiner includes a substrate with at least one aspheric surface and an diffraction-type reflective coating formed on the substrate for selectively reflecting radiation within one or more predetermined narrow band ranges of w ...


7
Ronald T Smith: Waveguide holographic telltale display. Hughes Aircraft Company, L A Alkov, W K Denson Low, August 23, 1994: US05341230 (48 worldwide citation)

A waveguide holographic telltale display for displaying images to a vehicle driver via the vehicle windshield. A light source injects light into the base of a clear inner windshield singlet. A mirror hologram between the inner and outer singlets confines a majority of the injected light to the inner ...


8
Mao Jin Chern, Ronald T Smith, Brent C Frogget: Holographic data storage and retrieval system. Hughes Aircraft Company, Leonard A Alkov, W K Denson Low, April 16, 1991: US05007690 (46 worldwide citation)

A plurality of reflective diffusing holographic memory elements (16) is positioned on a memory plate (14). An array (24) of detectors (22) faces at least one of the memory elements. A laser (26) illuminates the selected memory element and the data stored therein is reflected onto the array for readi ...


9
Ronald T Smith, Mao Jin Chern, Ronald G Hegg: Automotive head-up display with high brightness in daytime and high contrast in nighttime. Hughes Aircraft Company, Leonard A Alkov, Wanda K Denson Low, October 1, 1991: US05053755 (42 worldwide citation)

A head-up display having an image source for producing imaging illumination, an optical combiner for partially reflecting the imaging illumination to produce a virtual image of the image source that is viewable by the operator of the vehicle, and a polarizer which can be controllably interposed betw ...


10
Ronald T Smith: Dispersion-compensated windshield hologram virtual image display. Hughes Aircraft Company, Leonard A Alkov, Wanda Denson Low, January 1, 1991: US04981332 (42 worldwide citation)

A virtual image display including an image hologram, a dispersion compensating hologram for providing playback illumination to the image hologram, and an illumination source for providing playback illumination to the dispersion compensating hologram.