1
John Popovich, David G Pelka, William A Parkyn, Michael J Popovich, Eric D Pelka: Lighting apparatus. Teledyne Lighting and Display Products, Kirkpatrick & Lockhart, June 24, 2003: US06582103 (260 worldwide citation)

An illumination apparatus provides an output with high spatial uniformity of luminance. The illumination apparatus includes a cavity that has reflective surfaces and an output area. At least one light source is disposed in the cavity, with the light source including a point source (such as an LED) a ...


2
David G Pelka: Light source for backlighting. Teledyne, Robert J Pugh, Patrick J Allegheny Teledyne Viccaro, December 28, 1999: US06007209 (188 worldwide citation)

A light source for a display panel of the type used in notebook computers. The light source consists of a housing having diffusively reflecting bottom and side interior surfaces that form a cavity. The housing defines an aperture that is juxtaposed with a rear surface of the display panel. A first s ...


3
David G Pelka, John Popovich: Lighting apparatus having low profile. Teledyne Lighting and Display Products, Knobbe Martens Olson & Bear, October 29, 2002: US06473554 (183 worldwide citation)

Disclosed is a low profile lighting apparatus that is particularly advantageous for use as a backlight for illuminating a display. The lighting apparatus includes a waveguide coupled to a light source for injecting light into the waveguide. The waveguide includes a plurality of elongate structures f ...


4
David G Pelka, William A Parkyn Jr: Multiple wavelength light processor. TIR Technologies, William W Haefliger, August 12, 1997: US05655832 (157 worldwide citation)

A radiant energy redirecting system, comprising at least two light-emitting sources, each emitting different frequency light; an optical cavity receiving light output from the sources, to mix therein, and act as a secondary emitter; a light receiver positioned to be illuminated by light from the sec ...


5
William A Parkyn Jr, David G Pelka: TIR lens for waveguide injection. TIR Technologies, William W Haefliger, September 15, 1998: US05806955 (153 worldwide citation)

A radiant energy redirecting system comprising a radiant energy transmitting body structure; the structure comprising multiple elements, each of which acts as a radiant energy redirecting module, having on its cross-sectional perimeter an entry face to receive incidence of the energy into the interi ...


6
William A Parkyn Jr, David G Pelka: Light extraction from LEDs with light pipes. Teledyne Lighting and Display Products, Kirkpatrick & Lockhart, May 6, 2003: US06560038 (146 worldwide citation)

A non-imaging optical coupler that is a figure of revolution combining a light-transmitting body defining a recessed input cavity, a transparent droplet-shaped encapsulant of a light-emitting diode, or array of diodes in the cavity, the body having a curved side wall shaped to totally internally ref ...


7
David G Pelka, William A Parkyn: Strip lighting apparatus and method. Teledyne Lighting and Display Products, Kirkpatrick & Lockhart, October 28, 2003: US06637924 (123 worldwide citation)

An illumination apparatus comprises an elongated waveguide having proximal and distal ends and a central longitudinal axis. The waveguide includes an elongated forward side for outputting light and an elongated rearward side having an elongated reflective surface for reflecting light towards the for ...


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9
George W Panagotacos, David G Pelka: Flexible lighting segment. Teledyne Lighting and Display Products, Kirkpatrick & Lockhart, May 20, 2003: US06566824 (121 worldwide citation)

An illumination apparatus comprises a lighting segment that includes a plurality of lighting sections. Each of the sections comprises a printed circuit board having a solid state optical emitter mounted thereon. The sections are interconnected by printed circuit board connectors, which serially posi ...


10
William A Parkyn Jr, David G Pelka, John M Popovich: Faceted totally internally reflecting lens with individually curved faces on facets. TIR Technologies, William W Haefliger, April 11, 1995: US05404869 (117 worldwide citation)

A radiant energy redirecting system comprising a radiant energy transmitting body structure; the structure comprising multiple elements, each of which acts as a radiant energy redirecting module, having on its cross-sectional perimeter an entry face to receive incidence of the energy into the interi ...