General Electric Company

Other

Federal Signal Corporation

Fiberstars, Inc.

Adb Airfield Solutions, LLC

Siemens Airfield Solutions

Ford Motor Company Limited

California Institute of Technology

Steris Inc.

Richard L Hansler

John M Davenport

William J Cassarly

Gary Robert Allen

Frederic F Ahlgren

William W Finch

Kenneth S King

Rolf S Bergman

Joseph M Allison

Thomas G Parham

John L Henkes

John J Karikas

Richard C Nagle

Edward Carome

Mark E Duffy

Vilnis E Kubulins

Park French

Thomas M Golz

Frederick W Dynys

Rocco T Giordano

Robert A Leskovec

Carl V Gunter

Timothy J Mazies

John W Munk, Jr

Mahendra Somasara Dassanayake

Edward A Enyedy

James T Dakin

Jeffrey Allen Erion

Martin Aaron Alpert

David Jesurun

Walter J Kosmatka

Victor M Selig

Elmer G Fridrich

Thomas George

Jeffrey D Johnson

Timothy Kolody

Ward L Sanders

Martin N Hassink

Jacek J Jozwik

Leonard E Hoegler

Ralph M Potter

John X Li

Margaret L Tuma

Gregory A Sink

Dimitri M Speros

Glenn Alan Morrow

Robert Joe Byrd

Alan Glenn Glassner

Dennis J Hilburger

Kent Allen Kekeis

Jerry L Williams

Amarendra Mishra

Walter R Chapman, Jr

Jean-Pierre Vanderreydt

Alistair Allen Miller

Robert H Springer

David L Ruffini

Eric Jones

Saysana Say Kongchan

Richard Schweder

Jay S Northington

Joseph Feldman

Allen Miller

Mark H Thomsen

Victor A Levand, Jr, Deceased

Ronald S White

Robert F Holle

John M Blank

Arthur S Homa

Robert G Hantman

Michael Eastwood

Maw H Lee

Donald W Truett

Samuel E Davis

Lee E Barnes, Jr

Douglas J Ansley

Stuart C Miller

Thomas E Stenger

Matthew F Clapper

Willie J Cheney

L Abigail Ainsworth

Lee E Barnes

An electric lamp includes a first light source and a second light source and power circuitry configured to selectively energize the first light source and the second light source. The first light source is configured to produce light that is substantially free of wavelengths below about 530 nanometers, and the second light source is configured to product light having wavelengths of less than about 530 nanometers. The electric lamp is configured to produce white or near-white light in a variety of color temperatures, while retaining good color rendering index.

Multi-chip light emitting diode light device

Described herein is a LED PAPI having an array of light emitting diodes (LEDs), the array of LEDs comprising a first set of LEDs emitting a first color and a second set of LEDs emitting a second color. Light from the array of LEDs passes through a pair of apertures separated by a precision ground blade. The precision ground blade has a first edge that is closest to the array of LEDs and a second edge opposite the first edge. The first and second edges have different thicknesses. After passing through the apertures, the light passes through a first lens and a second lens.

Light emitting diode precision approach path indicator (LED PAPI)

A system and method for producing a flash of a desired intensity and duration utilizing devices of a lower intensity, such as light emitting diodes (LED's). The on period of the LED is lengthened so that the product of the LED's intensity and the on period is approximately equal to the product of the desired intensity and duration of the flash. A parameter for determining intensity, such as operating current or voltage, can be measured and the on period can be adjusted accordingly. The device can be turned on responsive to an external trigger signal, and a timer can be utilized to turn the device on if the external trigger signal is not received within a predetermined time.

LED flasher

A runway and taxiway lighting system (of FIG.). The system () includes a housing () as part of a light assembly (), which light assembly () includes a light source () for emitting light (), and a light pipe (). The light pipe () has a first end () in close association with the light source () for coupling the light () thereinto, and a second end () from which the light () is dispersed. The system () also includes a power source encased in a power box (), and operatively connected to the light assembly () for providing power thereto.

Elevated airfield runway and taxiway edge-lights utilizing light emitting diodes

An airfield guidance sign. The sign 100 (of FIG.) includes a case (), a multi-element light source () attached to the case () for providing light interior to the case (), a light dispersion subsystem of the case for dispersing the light from the light source () substantially uniformly throughout the interior of the case (); and a side panel () forming a side of the case () for displaying information.

Uniformly lighted airfield guidance sign

A micro electromechanical system (MEMS) broad band incandescent light source includes three layers: a top transmission window layer; a middle filament mount layer; and a bottom reflector layer. A tungsten filament with a spiral geometry is positioned over a hole in the middle layer. A portion of the broad band light from the heated filament is reflective off the bottom layer. Light from the filament and the reflected light of the filament are transmitted through the transmission window. The light source may operate at temperatures of 2500 K or above. The light source may be incorporated into an on board calibrator (OBC) for a spectrometer.

Silicon micromachined broad band light source

A surgical task light is provided including a light source adapted to generate light. An elongate optical fiber carries the light generated by the light source to a remote target site. The optical fiber includes a proximal end for receiving the light generated by the light source and a distal end for emitting the light. A support member supports the optical fiber relative to the ceiling of an associated operating room and holds the optical fiber in a plurality of selected positions. A lens device is carried on the distal end of the optical fiber for focusing the light emitted from the distal end of the optical fiber into a desired selected pattern. A sterile sheath member in combination with the surgical task light provides a sterile barrier between the surgical area and the mechanical and optical portions of the task light. A re-lamping module includes a replaceable light bulb module carrying a light bulb to help facilitate replacement of the light bulb by maintenance personnel. A cooling system cools the light bulb and defines an air duct for directing an air flow through heat dissipating members. The air duct is separated from the optical light path between the light bulb and the elongate optical fiber to prevent the air flow from entering the light path to prevent dust and other contaminants from reducing the optical efficiency of the system.

Fiber optic ceiling supported surgical task light system with optical commutator and manual zoom lens

An optical coupler for distributing light in a 360-degree pattern at a small angle is disclosed. The coupler comprises a solid rod with a first end region for receiving light and a second end region for distributing light. The rod tapers up in cross-sectional dimension between the first and second regions so as to decrease the angular distribution of light reflecting internally from the sides of tapered portions of the rod. An axis extends from the second end region towards the first end region. The second end region includes a generally conically shaped void pointing towards the first end region and defining a surface for deflecting light in a 360-degree pattern about the axis at a small angle compared to light entering into the first end region.

Optical coupler and system for distributing light in a 360-degree pattern

A centralized lighting system is provided having a high intensity light source which is disposed at approximately the first optical focal point of an ellipsoidally shaped reflector member. A mirror member, disposed in advance of a second optical focal point associated with the reflector member, receives light output from the light source and is constructed so as to divide the light output into at least first and second beam portions. The mirror member is further effective so as to separate the first and second beam portions by at least 90 degrees relative to one another. Corresponding at least first and second optical transmission members are receptive of the first and second beam portions and are effective for communicating the light output to locations remote from the light source. In one embodiment, the mirror member is V-shaped and is constructed of first and second mirror segments joined together so as to form an angle of less than about 85 degrees therebetween. The mirror member is effective for dividing the beam portions so that such beam portions are substantially equivalent to one another in terms of intensity, shape and color. The V-shaped mirror member is further effective for separating the first and second beam portions by approximately 180 degrees relative to one another.

High efficiency dual output light source

An optical coupler for coupling light along an axis between a light port on one side of the coupler and a plurality of light ports on another side of the coupler. The coupler comprises a one-side stage with a light port and a many-side stage with a plurality of arms situated about the axis, each having a light port. A midput region separates the one-side and many-side stages and is situated along the axis where the plurality of arms at least initially starts to split from each other in a direction towards the many-side light ports along the axis. Cross sections of each of the respective initial portions of the arms along the direction are arranged about the same distance from the axis. The cross sectional areas of the arms along the axis are larger at a break point region at which the arms fully separate from each other along the axis than at the many-side light ports. At least a pair of the arms each start to split along the direction in a substantially symmetrical manner about the axis.

Optical coupler for coupling light between one and a plurality of light ports

A compact optical assembly includes a tight bend region that effectively propagates light from a source to an end use while maximizing beam lumens, improving color mixing, and minimizing complexity. A first nonimaging optical component increases the angular distribution of light from the source to an input end of the bend region having a light fiber with a first cross-sectional dimension. A second nonimaging optical component receives light from the bend region and decreases the angular distribution. A light conductor that interconnects the light source to the first nonimaging optical component has a cross-sectional dimension in the plane of the bend region greater than that of the light fiber and, likewise, a second conductor receiving light from the second nonimaging optical component has a cross-sectional dimension in the plane of the bend region greater than the light fiber.

Compact optical system with turn and color mixing

A compact coupling arrangement between a light source and a plurality of light distribution harnesses includes a plurality of reflector members arranged around the light source with respective focal points of the reflector members positioned substantially coincident with the light source, so as to receive light from the source and reflect the light away from the source. Further included is a plurality of light coupling members, each having an inlet and an outlet surface for receiving light originating from the light source and transmitting light, respectively. A plurality of light distribution harnesses is provided for respectively receiving light from the light coupling members. The light coupling members each comprise a lens having a negative curvature in at least one direction generally transverse to a main light transmission axis therethrough, for receiving light at a first angular distribution and transmitting light at a reduced angular distribution. To facilitate manufacturing, at least one of the light coupling members may comprise an integral portion of one of the reflector members coinciding with the curvature of a proximate reflector member. Further, at least one of the inlet and outlet surfaces of one of the coupling members may be non-axisymmetrical about the main light transmission axis of its associated coupling member, for improving efficiency of light coupling.

Low angle, dual port light coupling arrangement

A central lighting system for providing light to locations remote from a light source includes first and second ellipsoidally shaped reflectors joined together to surround the light source. The first and second reflectors direct the light from the light source to light guides which are fixed at a position outside of the joined together reflectors. The ellipsoidally shaped reflectors each have an opening or window along an optical axis through which the reflected light passes to the light guides. The configuration of the reflectors allows the light the be received by the light guides outside of the reflectors. A base secures the light source in a fixed position with respect to the reflectors and allows the light source and reflector module to be removed and replaced as a single unit without repositioning the light guides.

Modular dual port central lighting system

A linear double ended lamp can be modified into a number of non-linear arrangements by heating selected regions of the lamp ends to the softening temperature and bending the lamp ends to a desired angular configuration. Preferably, the lamp ends are bent across the sealing foil that is hermetically sealed to the lamp envelope. One or both ends of the lamp can be bent as desired to define a variety of configurations. According to the method of forming the bent double ended lamp, selected regions of the lamp are raised above the softening temperature while the remainder of the lamp is maintained at a lower temperature. Preferably, the lamp ends are bent along an axis offset and parallel to the longitudinal axis of the lamp to prevent accumulation of material.

Double ended quartz lamp with end bend control

A lighting system and method for broadcasting colored lights as emergency warning signals from a light source. A centralized continuous light source is coupled via a fiber optic transmission medium to an external display location such as a lens or the like located on a vehicle. The color and the relative intensity of each color is periodically modulated to alternate between at least two states such that the contrast between these alternating states is perceived by observers to be a flashing source of light with no off-time. The frequency and the duty cycle of the repetition rate of alternating between the states may be further controlled to better draw attention to the light source.

System and method for broadcasting colored light for emergency signalling

Growing community of inventors

Pepper Pike, OH, United States of America

Richard L Hansler