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Author

Kurt R. Munson

Bio: Kurt R. Munson is an academic researcher from Delta Electronics. The author has contributed to research in topics: Polarization (waves) & Polarizer. The author has an hindex of 1, co-authored 1 publications receiving 76 citations.

Papers
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Patent
07 Dec 2001
TL;DR: In this paper, a projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel.
Abstract: A projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel integrator. The input end of the tunnel integrator includes an input aperture and a reflective inside surface coated with a quarter wave retarder. In operation, the randomly polarized light enters the tunnel integrator through the input aperture. The polarization recapture system transmits light having a first polarization as polarized light output and recycles light having a second polarization orthogonal to the first polarization. The light having the second polarization is reflected by the transmitting/reflecting polarizer back into the tunnel integrator. The polarization recapture system recycles the light having the second polarization by reflecting and reorienting the light having the second polarization to light of the first polarization.

76 citations


Cited by
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Patent
William J. Allen1
07 Dec 2005
TL;DR: In this paper, a method of displaying an image with a display device including a plurality of display pixels includes receiving image data for the image, buffering the image data and creating a frame of the image.
Abstract: A method of displaying an image with a display device including a plurality of display pixels includes receiving image data for the image, the image data including individual pixels of the image; buffering the image data and creating a frame of the image, the frame of the image including a plurality of columns and a plurality of rows of the pixels of the image; defining a first sub-frame and at least a second sub-frame for the frame of the image, image data of the second sub-frame being offset from image data of the first sub-frame by an offset distance of at least one pixel; and displaying the first sub-frame with a first plurality of the display pixels and displaying the second sub-frame with a second plurality of the display pixels offset from the first plurality of the display pixels by the offset distance.

167 citations

Patent
19 Mar 2004
TL;DR: A planar light emitting layer with a wurtzite crystal structure having a axis roughly parallel to the plane of the layer is referred to as an in-plane light emitting layers.
Abstract: A semiconductor light emitting device includes a planar light emitting layer with a wurtzite crystal structure having a axis roughly parallel to the plane of the layer, referred to as an in-plane light emitting layer. The in-plane light emitting layer may include, for example, a {11{overscore (2)}0} or {10{overscore (1)}0} InGaN light emitting layer. In some embodiments, the in-plane light emitting layer has a thickness greater than 50 Å.

133 citations

Patent
19 Mar 2004
TL;DR: In this paper, a light emitting device (LED), a concentrator element, a compound parabolic concentrator, and a wavelength converting material, such as a phosphor, are combined via a polarizing beamsplitter.
Abstract: A light emitting device includes a light emitting diode (LED), a concentrator element, such as a compound parabolic concentrator, and a wavelength converting material, such as a phosphor. The concentrator element receives light from the LED and emits the light from an exit surface, which is smaller than the entrance surface. The wavelength converting material is, e.g., disposed over the exit surface. The radiance of the light emitting diode is preserved or increased despite the isotropic re-emitted light by the wavelength converting material. In one embodiment, the polarized light from a polarized LED is provided to a polarized optical system, such as a microdisplay. In another embodiment, the orthogonally polarized light from two polarized LEDs is combined, e.g., via a polarizing beamsplitter, and is provided to non-polarized optical system, such as a microdisplay. If desired, a concentrator element may be disposed between the beamsplitter and the microdisplay.

129 citations

Patent
Hidefumi Sakata1, Takashi Takeda1
09 May 2003
TL;DR: In this paper, a compact, thin, and lightweight lighting system and projector is provided with an LED array having LEDs and a reflective plate at the rear side of the LEDs in the light emitting direction.
Abstract: The invention provides a compact, thin, and lightweight lighting system and projector A lighting system included in a projector according to the present invention is provided with an LED array having LEDs and a reflective plate at the rear side of the LEDs in the light emitting direction, retardation films, a taper rod lens array, a rod lens array, and a reflective polarizing plate

121 citations

Patent
20 Jan 2009
TL;DR: In this paper, a micro-projector consisting of an LED layer, a light pipe coupled to the LED, a LCOS panel, a projection lens, a PBS, an aperture layer coupled to output end of the light pipe which has a transmissive opening for transmitting a portion of light output and a reflective surface for reflecting the remaining portion of a light output toward the input end of light pipe.
Abstract: A micro-projector comprises an LED layer, a light pipe coupled to the LED, a LCOS panel, a projection lens, a PBS, an aperture layer coupled to the output end of the light pipe which has a transmissive opening for transmitting a portion of the light output and a reflective surface for reflecting the remaining portion of the light output toward the input end of the light pipe. Thus, the remaining portion of the light output is recycled back to the LED to increase the brightness of the light output of the LED. The micro- projector also comprises a reflective polarizer disposed between the light pipe and the aperture layer for transmitting the light output of a predetermined polarization and reflecting other polarization of the light output, thereby recycling unused polarization of the light output back to the LED to increase the brightness of the light output of the LED.

99 citations