Osram Sylvania Inc.

Ledvance Gmbh

Kenneth Grossman

Richard Speer

Miguel Galvez

Adam Scotch

David Hamby

Victor E Perez

Thomas Dreeben

Mary Ann Johnson

David Betts

Richard S Speer

An end cap for a solid-state lighting device is described that provides an electrical connection(s) between an external power source and at least one solid-state emitter disposed in a hollow member of the lighting device. An outer wall extends a first distance and an inner wall extends a second distance from an inward-facing side of the end cap base. A gap between the inner wall and the outer wall accommodates the insertion of the hollow member. A contactor electrically coupled to a conductive member on an opposite side of the end cap extends into the gap. The contactor exerts a force on a flexible conductor and provides a power supply path to or power return path from the at least one solid-state emitter. Preferably, the lighting device includes an array of solid-state emitters disposed on a flexible substrate.

End cap with contactor exerting outward force and lighting device having same

A conductive pathway mounted on an electrically insulating sheet having an upper face and an opposed lower face, said sheet having a plurality of pairs of apertures; a plurality of electrically conductive clips, each clip being separated spatially from an adjacent said clip; each electrically conductive clip comprising a first body portion and first and second depending legs defining a sheet-receiving recess therebetween, said first body portion being disposed in contacting relation with said upper face of said sheet and said legs being disposed in contacting relation with said lower face of said sheet; each leg of one of said electrically conductive clips extending through one of said apertures of a pair of said apertures from said upper face to said lower face; and a plurality of electrical components each mounted in conductive relationship to two adjacent said conductive clips and bridging said insulating sheet.

Clips defining electrical pathway on a flexible sheet

There is herein described an LED lamp suitable for replacing conventional fluorescent lamps. The LED lamp has a tubular body and a flexible circuit board as compared to the rigid circuit boards used in other similar lamps. The flexible circuit board has a plurality of LEDs, electric circuitry for powering the LEDs, and a curvature that is maintained by a retention means. The curvature of the flexible circuit board substantially corresponds to the curvature of the tubular body which places the LEDs further away from the front surface of the lamp thereby allowing for improved diffusion and light distribution.

Tubular LED lamp with flexible circuit board

Techniques and architecture are disclosed for providing a modular lighting system/luminaire having an integrated heat sink assembly. In some cases, the system/luminaire may comprise a plurality of individual modular light sources which have been operatively coupled with one another. In some instances, a modular light source may include one or more light engines (e.g., light emitting diodes or LEDs) which have been operatively coupled with an individual heat sink module. When assembled, the plurality of heat sink modules may define, in the aggregate, a plurality of heat conduits which dissipate thermal energy from the light engines by convective heat transfer. Also, in some cases, the heat sink modules may be electrically isolated from one another, allowing for the heat sink assembly itself, in part or in whole, to function as part of the desired circuit.

Modular lighting techniques

There is herein described a lamp for providing white light comprising a plurality of light sources positioned on a substrate. Each of said light sources comprises a blue light emitting diode (LED) and a dome that substantially covers said LED. A first portion of said blue light from said LEDs is transmitted through said domes and a second portion of said blue light is converted into a red light by a first phosphor contained in said domes. A cover is disposed over all of said light sources that transmits at least a portion of said red and blue light emitted by said light sources. The cover contains a second phosphor that emits a yellow light in response to said blue light. The red, blue and yellow light combining to form the white light and the white light having a color rendering index (CRI) of at least about 80.

LED lamp

An LED light source () comprises a ceramic substrate () with first and second opposed surfaces (). Pockets () are formed in the first surface () and each of the pockets includes a bottom () and a sidewall or sidewalls (). A final electrical contact () comprised of a first electrically conductive material () with a coating of a second electrically conductive material () thereover is positioned in each of the pockets (). An LED () is positioned in each of the pockets () and affixed to the electrical contact () and electrical connections (), preferably in form of wire bonds, join the LEDs, the electrical connections () extending from a first LED () to an adjacent electrical contact (). The ceramic substrate () is formed by injection molding a ceramic material and binder to form a green substrate () and subsequently sintering the green substrate to form the substrate (). An LED light () can be formed from the LED light source () by adding a dome () formed of a ceramic material containing therein a homogeneous dispersion of a phosphor material capable of emitting light when excited by the light emitted from the operating LEDs ().

Growing community of inventors

Beverly, MA, United States of America

Kenneth Grossman