Method and apparatus for providing high-temperature multi-layer optics

US9466772B2 · kind B2 · utility

Assignee

• Bridgelux, Inc. · US

Inventors

• Robert Tudhope · Rancho Palos Verdes, US
• Xiaolu Chen · Saline, US
• Wenhui Zhang · Jiaocheng District, CN

Key dates

• Filing date: Feb 27, 2015
• Grant date: Oct 11, 2016
• Expiry date: Feb 27, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/853

Abstract

A solid-state light-emitting device (“SLD”) converting electrical energy to photon energy using a light emitter diode (“LED”) and high-temperature multi-layer optics (“HMO”) is disclosed. The SLD, in one aspect, includes a chip-on-board (“COB”), a silicone inner layer (“SIL”), and a Poly methyl methacrylate (“PMMA”) layer. The COB includes a first surface and a second surface wherein the first surface includes at least one LED. The LED converts electrical energy to optical light and the light subsequently leaves the LED becoming visible light. The SIL includes a first silicone surface and a second silicone surface wherein the second silicone surface is in contact with the first surface of COB and the second silicone surface is in contact with the PMMA layer. The operating temperature of PMMA layer is lower than the operating temperature of SIL.