# US 10,120,116 B2 · Light-emitting apparatus and light-emitting apparatus system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,116 B2 - Document ID: US10120116B2 - Status: Granted - Kind: B2 - Application number: 15/658,618 - Filed: 2017-07-25 - Published: 2018-02-01 - Granted: 2018-11-06 - Earliest claimed: 2016-07-28 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Shintaro Hayashi - Web page: https://patentgrep.com/patent/US10120116B2 ## CPC - G02B 6/001: {the light being emitted along at least a portion of the lateral surface of the fibre} - F21V 9/08: for producing coloured light, e.g. monochromatic; for reducing intensity of light (with provision for controlling the colour F21V9/40) - F21V 9/38: Combination of two or more photoluminescent elements of different materials - F21V 13/08: the elements being filters or photoluminescent elements and reflectors - G02B 6/4206: {Optical features (G02B6/4207, G02B6/421 take precedence)} - G02B 6/4295: {coupling with semiconductor devices activated by light through the light guide, e.g. thyristors, phototransistors} - H01S 5/0071: {for beam steering, e.g. using a mirror outside the cavity to change the beam direction} - H01S 5/0087: {for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials} - H01S 5/02251: using optical fibres - G02B 6/0006: {Coupling light into the fibre (in general G02B6/4298)} - G02B 6/443: {Protective covering} - H01S 5/32341: {blue laser based on GaN or GaP} - H01S 5/4012: {Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL ## Abstract A light-emitting apparatus includes: a first light guide which includes a first photoreceptor, a second photoreceptor, and a leak, the first light guide guiding light radiated by a radiation apparatus and received by the first photoreceptor and the second photoreceptor, the leak allowing leakage light to be leaked out, the leakage light being part of the light; a converter which converts a wavelength of the leakage light leaked out of the first light guide; a second light guide which is disposed along the first light guide, the second light guide guiding the light radiated by the radiation apparatus and received by a third photoreceptor to the second photoreceptor; and a protector which is tubular and in which the first light guide and the second light guide are disposed such that the first photoreceptor and the third photoreceptor are disposed at a same open end. ## Claims ### Claim 1 A light-emitting apparatus connected to a radiation apparatus which radiates laser light, the light-emitting apparatus comprising: a first light guide which includes a first photoreceptor at one end, a second photoreceptor at another end, and a leak, the first light guide guiding light radiated by the radiation apparatus and received by the first photoreceptor and the second photoreceptor, the leak allowing leakage light to be leaked out in a direction crossing a light-guiding direction, the leakage light being part of the light; a converter which is disposed along the first light guide and converts a wavelength of the leakage light leaked out of the first light guide; a second light guide which is disposed along the first light guide, includes a third photoreceptor, and does not include the leak, the second light guide guiding the light radiated by the radiation apparatus and received by the third photoreceptor to the second photoreceptor; and a protector which is tubular and in which the first light guide and the second light guide are disposed such that the first photoreceptor and the third photoreceptor are disposed at a same open end. ### Claim 2 (depends on 1) The light-emitting apparatus according to claim 1, wherein the protector includes a partition which partitions a space inside the protector into a first chamber which houses the first light guide and a second chamber which houses the second light guide. ### Claim 3 (depends on 2) The light-emitting apparatus according to claim 2, wherein the protector includes a light-blocking portion which blocks light leaked out of the second light guide. ### Claim 4 (depends on 1) The light-emitting apparatus according to claim 1, wherein the protector includes a reflector which reflects light emitted by the converter, toward an outside of the protector. ### Claim 5 (depends on 1) The light-emitting apparatus according to claim 1, wherein the protector includes the converter in a surrounding wall on a side of the first chamber. ### Claim 6 (depends on 1) The light-emitting apparatus according to claim 1, wherein the protector includes a scattering portion which scatters the laser light toward the first chamber. ### Claim 7 (depends on 1) The light-emitting apparatus according to claim 1, further comprising a return which is disposed on a side of the second photoreceptor of the first light guide and turns back light guided by the second light guide. ### Claim 8 (depends on 7) The light-emitting apparatus according to claim 7, wherein the return is connected to an end of the protector. ### Claim 9 A light-emitting apparatus system, comprising: a radiation apparatus which radiates laser light; a first light guide which includes a first photoreceptor at one end, a second photoreceptor at another end, and a leak, the first light guide guiding light radiated by the radiation apparatus and received by the first photoreceptor and the second photoreceptor, the leak allowing leakage light to be leaked out in a direction crossing a light-guiding direction, the leakage light being part of the light; a converter which is disposed along the first light guide and converts a wavelength of the leakage light leaked out of the first light guide; a second light guide which is disposed along the first light guide, includes a third photoreceptor, and does not include the leak, the second light guide guiding the light radiated by the radiation apparatus and received by the third photoreceptor to the second photoreceptor; and a protector which is tubular and in which the first light guide and the second light guide are disposed such that the first photoreceptor and the third photoreceptor are disposed at the same open end.