Patent
High efficiency illuminator
Prasad M Koppolu,Amir Fallahi,Jeyachandrabose Chinniah +2 more
- 08 Jan 1993
86
TL;DR: In this paper, an illuminator for use with a light source having a light distribution pattern within a solid angle of 2π steradians is presented, where the reflective surface is optimized to confine the light output only to the required photometric zones.
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Abstract: An illuminator for use with a light source having a light distribution pattern within a solid angle of 2π steradians The light source comprises or includes a series of LED's or light pipes positioned at or near a focal point of a reflective surface and inclined at an angle to a focal axis of the reflective surface such that all of the light from the light source is collected and distributed by the reflective surface Whereby the reflective surface is optimized to confine the light output only to the required photometric zones thus maximizing the efficiency of the illuminator
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Citations
Patent
Intelligent observation and identification database system
John C. Pederson
- 22 Aug 2003
TL;DR: In this article, an intelligent video/audio observation and identification database system was proposed to define a security zone or group of zones and identify vehicles and individuals entering or exiting the zone through image recognition of the vehicle or individual as compared to prerecorded information stored in a database.
316
Patent
LED light communication system
John C. Pederson,Paul R. Brown,Timothy J. Vogt,James LeClaire,James Zimmerman,Brent Mikkelsen +5 more
- 23 May 2008
TL;DR: In this article, an LED light and communication system includes at least one optical transceiver, the optical transceivers including a light support and a processor, the processor is capable of illuminating the light emitting diodes to simultaneously create a first light signal and a second light signal, the first signal being observable to the unaided eyes of an individual and the second signal not being observable.
304
Patent
LED warning light and communication system
John C. Pederson,Dan Severson,Cathy Jo Severson +2 more
- 14 Nov 2001
TL;DR: A light emitting diode (LED) warning signal light and communication device comprising a controller for generating a first observable light signal and a second non-observable light signal within said first light signal as discussed by the authors.
254
Patent
Optical device for LED-based lamp
Julio Chaves,Juan C. Miñano,Pablo Benítez,William A. Parkyn,Waqidi Falicoff,Fernando Muñoz,Yupin Sun +6 more
- 17 Nov 2004
TL;DR: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer area and spread the light generally spherically as discussed by the authors.
223
Patent
LED light bar
John C. Pederson
- 28 Jul 2000
TL;DR: A light emitting diode (LED) warning signal light as mentioned in this paper provides various colored light signals for independent use or use on an emergency vehicle, including strobe lights, revolving lights, alternating lights, flashing lights, modulated lights, pulsating lights, and oscillating lights.
160
References
Patent
Light emitting diode lamp
Hiroaki Murata,Teruhisa Inomata,Masatoshi Tabira +2 more
- 07 Nov 1988
TL;DR: A light emitting diode lamp (LEDM) as discussed by the authors is an automobile lamp with a plurality of hollows thereon each of which has a light-emitting diode mounted on the bottom of the board and a light reflecting surface on the side wall.
616
Patent
Nonimaging light source
Robert C. Gardner,David E. Silverglate,Greg P. Smestad,George E. Smith,John F. Snyder +4 more
- 09 Aug 1989
TL;DR: In this article, the principles of non-imaging optics, rather than imaging optics, are used to provide a high power LED illumination lamp that has a specified limited viewing angle, where a compound parabolic flux extractor extracts and concentrates light emitted by an LED chip and a light pipe continues the concentration into the specified viewing angle.
163
Patent
Led lamp including refractive lens element
Kevin Grant Alston
- 17 Jul 1991
TL;DR: A lamp includes one or more LED's which illuminate respective portions of a refractive lens element whose incident surface preferably includes portions of hyperboloids which translate the LEDs' emitted rays into substantially parallel beams within the lens element as mentioned in this paper.
113
Patent
Headlamp inter alia for motor vehicles
Pierre Cibie
- 16 Dec 1980
TL;DR: In this article, a headlamp consisting of a lens formed by a number of juxtaposed dioptric elements, each having a focal point (F) and an axis (5), is described.
94
Patent
Rear window stop lamp for motor vehicles
Tetsuo Sasajima,Masaru Morikawa +1 more
- 20 Jan 1992
TL;DR: In this paper, a rear window stop lamp is attached to the interior side of a vehicle by a resin-molded body and a light distribution lens plate covers an opening of the cavity for directing rearwardly a light beam emitted from the LED chip and reflected by the curved reflecting surface.
93
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