US 11,112,069 B2Granted

Light emitting device

AssigneeNichia Corporation

InventorsKazuma Kozuru, Shinichi Nagahama

Life of this patent

Estimating the term…

Loading patent…

Abstract

A light emitting device includes a base; a plurality of semiconductor laser elements disposed on the base and configured to emit light laterally from the plurality of semiconductor laser elements; a reflecting member disposed on the base and configured to reflect light from the semiconductor laser elements; a surrounding part disposed on the base and surrounding the semiconductor laser elements and the reflecting member; a wiring part disposed on the base so as to extend to a location outside of the surrounding part; a radiating body disposed on the surrounding part and having an opening; and a wavelength converting member that is located in the opening of the radiating body, the wavelength converting member being configured to convert a wavelength of light that is emitted from the plurality of semiconductor laser elements and reflected upward by the reflecting member.

Claims24

Dependent claims

A light emitting device comprising:

a base having a first surface;
a frame disposed on the first surface of the base and comprising a plurality of sidewalls;
a plurality of light emitting elements disposed on the first surface of the base and within the frame, the plurality of light emitting elements comprising at least a first light emitting element and a second light emitting element;
a light reflector disposed between the first light emitting element and the second light emitting element and configured to reflect light from at least one of the plurality of light emitting elements;
a plurality of wiring parts comprising two first wiring parts and two second wiring parts, the two first wiring parts being electrically connected to the first light emitting element via first wires, the two second wiring parts electrically connected to the second light emitting element via second wires, one of the two first wiring parts and one of the two second wiring parts extending from inside of the frame to outside of one of two sidewalls of the plurality of sidewalls, another one of the two first wiring parts and another one of the two second wiring parts extending from inside of the frame to outside of another one of the two sidewalls;
and
a cover disposed on or above and covering the frame, the cover comprising a first portion having an opening through which light is configured to be transmitted and a light transmissive portion disposed in the opening, wherein
the first portion is in contact with the frame,
the light transmissive portion is configured to transmit light emitted from the plurality of lighting emitting elements,
the first light emitting element, the light reflector and the second light emitting element are arranged in a first direction, and
the two sidewalls are laterally separated in a second direction, the second direction being perpendicular to the first direction.

8 more elements

A method of manufacturing a light emitting device, the method comprising:

providing a base comprising a first surface;
disposing a frame on the first surface, the frame comprising a plurality of sidewalls;
disposing a plurality of light emitting elements comprising at least a first light emitting element and a second light emitting element on the first surface and within the frame;
disposing a light reflector between the first light emitting element and the second light emitting element, the first light emitting element, the light reflector and the second light emitting element being arranged in a first direction;
electrically connecting the first light emitting element to two first wiring parts via first wires and electrically connecting the second light emitting element to two second wiring parts via second wires, wherein
one of the two first wiring parts and one of the two second wiring parts extends from inside of the frame to outside of one of two sidewalls of the plurality of sidewalls,
another one of the two first wiring parts and another one of the two second wiring parts extends from inside of the frame to outside of another one of the two sidewalls,
the two sidewalls are laterally separated in a second direction perpendicular to the first direction;
disposing a cover on or above the frame;
and
bonding the cover to the frame, wherein
the cover comprising a first portion having an opening through which light is configured to be transmitted and a light transmissive portion disposed in the opening.

9 more elements

A method of manufacturing a light emitting device, the method comprising:

providing a base comprising a first surface;
disposing a frame on the first surface, the frame comprising a plurality of sidewalls;
disposing a plurality of light emitting elements comprising at least a first light emitting element and a second light emitting element on the first surface and within the frame;
disposing a light reflector between the first light emitting element and the second light emitting element, the first light emitting element, the light reflector and the second light emitting element being arranged in a first direction;
electrically connecting the first light emitting element to two first wiring parts via first wires and electrically connecting the second light emitting element to two second wiring parts via second wires, wherein
one of the two first wiring parts and one of the two second wiring parts extending from inside of the well to outside of one of two sidewalls of the plurality of sidewalls,
another one of the two first wiring parts and another one of the two second wiring parts extending from inside of the frame to outside of another one of two sidewalls, and
the two sidewalls are laterally separated in a second direction perpendicular to the first direction;
disposing a cover on or above the frame;
bonding the cover to the frame wherein
the cover comprising a first portion having an opening through which light is configured to be transmitted and a light transmissive portion disposed in the opening;
disposing a low-melting point glass on the frame;
and
melting the low-melting point glass, wherein the plurality of sidewalls has a lower thermal conductance than the cover.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/775,432Filed 29 Jan 2020 · continuation
Priority: JP 2014-08693118 Apr 2014
Published: US 2020/0169057 A128 May 2020
Granted: 7 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F21K 9/64
Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction: using wavelength…
F21V 13/08
Combinations of only two kinds of elements: the elements being filters or photoluminescent elements and reflectors
F21V 29/74
Characterised by passive heat-dissipating elements, e.g. heat-sinks: with fins or blades
H01S 5/0087
Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating…:…

Family

Application14/689,984Parent of this continuation · filed 17 Apr 2015
Application16/103,879Parent of this continuation · filed 14 Aug 2018
US 2020/0169057 A1Pre-grant publication · published 28 May 2020
US 10,587,091 B2Parent of this continuation
US 10,079,470 B2Parent of this continuation
US 2015/0303648 A1Published application
US 2018/0358776 A1Published application
US 11,112,069 B2This patent

From the US filing history. Foreign family members aren’t listed.