Texas Instruments Corporation

Allis-chalmers Corporation

Steven Monroe Penn

Duane Scott Dewald

Michael Terry Davis

Terry Alan Bartlett

D Scott Dewald

Frank Joseph Poradish

Steven Edward Smith

Dana Franklin Segler, Jr

Michael E Embree

David N Jones

William Robert Krenik

Leonardo William Estevez

Stephen Wesley Marshall

Gregory James Hewlett

Bradley Morgan Haskett

Matthew Glen Hine

Yoram Solomon

Dana J Segler, Jr

Jose S Vasquez

Ronald Allen Barry

Gregory Scott Pettitt

Andrew Ian Russell

Sajjad Ali Khan

Jeffrey Scott Farris

Donald Andrew Powell

Roger Mitsuo Ikeda

Harold E Bellis, Ii

Vincent C Lopes

Roger S Carver

Jerome L Berti

Steven Paul Krycho

William M Bommersbach

Getzel Gonzalez Garcia

Frederick C Wedemeier

Robert F Kovarik, Jr

Dana F Segler

Donald C Whitney

Greg S Pettitt

Scott D Dewald

According to one embodiment of the present invention a method for capturing images on a screen is disclosed. The method includes directing light from a surface of a spatial light modular to an image field using a projection system; capturing light from the image field using the projection system, the projection system directing at least a portion of the captured light to the spatial light modulator; and directing at least a portion of the received captured light to an image capture system using the spatial light modulator.

Shared-field image projection and capture system

Combined image projection and capture system using on and off state positions of spatial light modulator

Display systems and methods for mobile devices and mobile devices are disclosed. In one embodiment, a display system for a mobile device is provided. The mobile device is handheld and includes a primary display screen. The display system includes an auxiliary screen and a connecting device coupled to the auxiliary screen and attachable to the mobile device. An image from the mobile device is producible on the auxiliary screen. The display system is removable from the mobile device.

Display systems and methods for mobile devices

One aspect of an LED package, which is covered by this disclosure, includes at least two LED emitters located on a substrate wherein each of the at least two LED emitters forms an emitting area. The emitting area is substantially equal to a reflective area of the LED package, and the LED package has an optical axis that is substantially non-parallel to an optical axis of each of the at least two LED emitters.

LED package having improved light coupling efficiency for an optical system and method of manufacture thereof

Provided is a light emitting diode (LED). The LED, in one embodiment, includes a reflective layer located over a substrate and a quarter wave plate emitter layer located over the reflective layer. The quarter wave plate emitter layer, in this embodiment, is substantially crystalline in nature, and further wherein an extra-ordinary axis of the quarter wave plate emitter layer is located in a plane thereof. The LED, in this embodiment, further includes a transmissive/reflective polarization layer located over the quarter wave plate emitter layer, wherein a transmission direction of the transmissive/reflective polarization layer is oriented at about 45 degrees with respect to the extra-ordinary axis.

Polarized light emitting diode and use thereof

A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a sequence of collimated, colored, light beams for the illumination hologram. Waste light produced by the spatial light modulator is transmitted to the illumination hologram, and the illumination hologram emits waste light from at least one of its edges. Waste light emitted from an edge of the illumination hologram is absorbed by a light sensor to control the intensity of the light beams. A projection focusing element is mounted proximate a side of the illumination hologram to focus the image beam from the spatial light modulator for viewing. A projection hologram is interposed between the side of the illumination hologram and the projection focusing element to manage waste light.

Projection system and method including spatial light modulator and compact diffractive optics

Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device to separate unwanted off-state and/or flat-state light from the projection ON-light bundle. The TIR critical angle of these prisms is selected to affect either the off-state light or additionally, any portion of flat-state light reflected from the SLM. These TIR surfaces limit the contamination of light along the projection path, which tends to degrade the system contrast. To further improve the optical performance of the system, these TIR prisms can be attached directly to the SLM package, completely eliminating the package window.

Prism for high contrast projection

A method for compensating for a shift in color in a light source and a system of color illumination for a projection visual display (PVD) system. In one embodiment, the method includes: (1) field sequentially operating an array of emitters to generate a sequence of light beams, each light beam comprising an uncompensated saturated color, (2) determining a compensated target color from the uncompensated standard color, the compensated target color determined based upon a variation in the uncompensated standard color and variations in at least two other uncompensated standard colors, (3) combining a first light beam of a first color with a second light beam of a second color to produce said compensated target color, the first and second light beams combined in an optical path to travel concurrently, the combination of the first and second light beams resulting in a composite color coordinate and without exceeding the etendue limit and (4) directing the combination of the first and second light beams at the spatial light modulator, said modulator operable to receive the combination and produce a desired color on a display.

Projection illumination device and method for projection visual display system using multiple controlled light emitters having individual wavelengths

The addition of DMD illumination modulator(s)in series with projection SLM(s)to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and safety problems associated with high speed rotating color filter wheelscommonly used in SLM projectors and controls the light applied to individual areas of the projection SLM(s).

SLM projection display with series DMD illuminator

In one embodiment, a method includes transmitting one or more light beams by a first portion of a light modulator formed outwardly from a substrate. The one or more transmitted light beams are spatially integrated. A second portion of the light modulator is formed outwardly from the substrate. The second portion of the light modulator spatially integrates the transmitted light beams.

Multi-function light modulators for optical systems

A light valve assembly comprises a holographic optical element and a light valve that comprises an array of individually addressable pixels. The light valve assemblies can be fabricated on the die level or on a wafer-level.

Light valve assembly with a holographic optical element and a method of making the same

Disclosed is an optical component, which comprises a prism element adjacent to a lens element, where the two elements are separated by a small air gap. In disclosed embodiments, the elements have adjacent and parallel surfaces which are substantially planar and which, with the small air gap, operate through Total Internal Reflection ('TIR') to direct light beams that strike the planar surfaces. Light beams that strike at less than the critical angle are internally reflected, while light beams which strike at greater than the critical angle pass through. The TIR surfaces thereby separate the desired optical signals from the spurious ones. The combined TIR prism lens operates as a single and integrated component which directs desired light beams to a reflective optical processing element such as a Spatial Light Modulator and which focuses the processed light beams as they leave the combined TIR prism lens.

Integrated TIR prism and lens element

An apparatus is provided that includes a laser that produces light at a first wavelength, an optical element that converts the light at the first wavelength received at an input end thereof into light at a second wavelength, and an optical interface proximate the input end of the optical element that directs light at the second wavelength through the optical element toward an output end of the optical element.

Apparatus and method for producing light using laser emission

Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device to separate unwanted off-state and/or flat-state light from the projection ON-light bundle. The TIR critical angle of these prisms is selected to affect either the off-state light or additionally, any portion of flat-state light reflected from the SLM. These TIR surfaces are placed to immediately reflect the unwanted light as it comes off the SLM, thereby preventing the contamination of light along the projection path, which tends to degrade the system contrast. To further improve the optical performance of the system, these TIR prisms can be attached directly to the SLM package, completely eliminating the package window. Also, these TIR prism can be coupled to DMDs having asymmetric mirrors, which tilt through a larger angle for the ON-light to provide high etendue and lumen output, but through near-zero degrees for the OFF-light, thereby improving the separation of any unwanted light from the off/flat states.

Growing community of inventors

Plano, TX, United States of America

Steven Monroe Penn