Optical member, light emitting device, and method of manufacturing optical member
AssigneeNichia Corporation
InventorsTomonori Miyoshi, Masanobu Tanaka, Hiroaki Yuto, Akinori Hara, Teruhiko Noguchi
Life of this patent
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Abstract
An optical member includes a conversion member including a first surface that serves as a light-irradiated surface or a light extraction surface, and adapted to convert laser light, which is an excitation light, into light having a wavelength different from a wavelength of the excitation light; a holding member holding the conversion member and including a second surface that is continuous with the first surface of the conversion member; and a wiring having an elongated shape and extending continuously along the first surface of the conversion member and the second surface of the holding member.
Claims22
An optical member comprising:
- a conversion member including a first surface that serves as a light extraction surface, and adapted to convert laser light, which is an excitation light, into light having a wavelength different from a wavelength of the excitation light;
- a holding member holding the conversion member and including a second surface that is continuous with the first surface of the conversion member;
- a wiring having an elongated shape and extending continuously along the first surface of the conversion member and the second surface of the holding member;
- and
- a light-transmissive protective film covering the first surface and the wiring, wherein the protective film contains silicon oxide and a material having a refractive index higher than that of the silicon oxide.
An optical member comprising:
- a conversion member including a first surface that serves as a light-irradiated surface, and adapted to convert laser light, which is an excitation light, into light having a wavelength different from a wavelength of the excitation light;
- a holding member holding the conversion member and including a second surface that is continuous with the first surface of the conversion member;
- a wiring having an elongated shape and extending continuously along the first surface of the conversion member and the second surface of the holding member,
- a first metal layer for bonding, which covers a portion of the wiring;
- an insulating film that insulates the first metal layer and the wiring from each other;
- and
- a leakage checking electrode electrically connected to the first metal layer.
A method of manufacturing an optical member, the method comprising:
- providing a sintered body comprising a conversion member and a holding member that are integrally molded with each other, wherein the conversion member is adapted to convert laser light, which is an excitation light, into light having a wavelength different from a wavelength of the excitation light;
- removing a portion of the conversion member and a portion of the holding member to obtain a first surface of the conversion member and a second surface of the holding member, such that the first and second surfaces are coplanar and continuous with each other, and such that the holding member holds the conversion member, wherein the first surface of the conversion member serves as a light-irradiated surface or a light extraction surface;
- and
- forming a wiring having an elongated shape and extending continuously along the first surface of the conversion member and the second surface of the holding member, wherein the wiring includes a spiral segment having a spiral shape and extending 360 degrees around a center of the spiral shape in a plan view, and wherein a portion of the spiral segment is located on the second surface.
An optical member comprising:
- a conversion member including a first surface that serves as a light-irradiated surface or a light extraction surface, and adapted to convert laser light, which is an excitation light, into light having a wavelength different from a wavelength of the excitation light;
- a holding member holding the conversion member and including a second surface that is continuous with the first surface of the conversion member;
- and
- a wiring having an elongated shape and extending continuously along the first surface of the conversion member and the second surface of the holding member,
- wherein the wiring includes a spiral segment having a spiral shape and extending 360 degrees around a center of the spiral shape in a plan view, and
- wherein a portion of the spiral segment is located on the second surface.
Dependencies are inferred from the claim text.