# US 2019/0171091 A1 · Light source module, method of manufacturing light source module, and projection-type display unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0171091 A1 - Document ID: US20190171091A1 - Status: Published application - Kind: A1 - Application number: 16/321,556 - Filed: 2017-06-19 - Published: 2019-06-06 - Earliest claimed: 2016-08-19 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: HISAYOSHI MOTOBAYASHI; TOMOKI ONO - Web page: https://patentgrep.com/patent/US20190171091A1 ## CPC - G03B 21/16: Cooling; Preventing overheating - G02B 7/028: {with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation} - G02B 26/10: Scanning systems - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G02B 27/141: {using dichroic mirrors} - G02B 27/145: {having sequential partially reflecting surfaces} - G03B 21/2013: {Plural light sources} - G03B 21/2033: {LED or laser light sources} - H01S 5/02208: characterised by the shape of the housings - H01S 5/02326: Arrangements for relative positioning of laser diodes and optical components, e.g. grooves in the mount to fix optical fibres or lenses - H01S 5/024: Arrangements for thermal management - H01S 5/4012: {Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms} - G02B 27/01: Head-up displays - G02B 27/10: Beam splitting or combining systems (polarising systems G02B27/28; mixing and splitting light signals using optical waveguides G02B6/28; {beam shaping, e.g. changing the cross-sectional area, by dividing or superposing multiple light beams G02B27/0905}) - G03B 21/2066: {Reflectors in illumination beam (in projection beam G03B21/28)} - H01S 5/005: {Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping (H01S5/026, H01S5/18388 take precedence)} - H01S 5/0071: {for beam steering, e.g. using a mirror outside the cavity to change the beam direction} - H01S 5/0237: by soldering - H01S 5/02469: {Passive cooling, e.g. where heat is removed by the housing as a whole or by a heat pipe without any active cooling element like a TEC} - H01S 5/02476: {Heat spreaders, i.e. improving heat flow between laser chip and heat dissipating elements} - H01S 5/4093: {Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion} - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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 source module according to an embodiment of the present disclosure includes: a radiator; a plurality of light-emitting elements disposed on the radiator; a plurality of lenses that each convert a light beam outputted from corresponding one of the plurality of light-emitting elements into a collimated light beam and output the collimated light beam; a plurality of first optical elements that each reflect the collimated light beam outputted from corresponding one of the plurality of lenses while adjusting an optical axis direction of the collimated light beam; and a second optical element that multiplexes respective light beams reflected from the plurality of first optical elements. ## Claims ### Claim 1 A light source module comprising: a radiator; a plurality of light-emitting elements disposed on the radiator; a plurality of lenses each of which converts a light beam outputted from corresponding one of the plurality of light-emitting elements into a collimated light beam and output the collimated light beam; a plurality of first optical elements that each reflect the collimated light beam outputted from corresponding one of the plurality of lenses while adjusting an optical axis direction of the collimated light beam; and a second optical element that multiplexes respective light beams reflected from the plurality of first optical elements. ### Claim 2 (depends on 1) The light source module according to claim 1, wherein a difference between a thermal expansion coefficient of the radiator and a thermal expansion coefficient of the lens is in a range from 0 ppm/K to 10 ppm/K both inclusive. ### Claim 3 (depends on 1) The light source module according to claim 1, wherein the radiator has one surface on which the plurality of light-emitting elements are installed, and the collimated light beams outputted from the plurality of lenses are reflected by the first optical elements in a direction perpendicular to the one surface of the radiator. ### Claim 4 (depends on 1) The light source module according to claim 1, wherein the first optical elements are fixed by a holding jig. ### Claim 5 (depends on 4) The light source module according to claim 4, wherein the holding jig has an opening in an optical path of each of the light beams outputted from the plurality of light-emitting elements. ### Claim 6 (depends on 4) The light source module according to claim 4, wherein the radiator has a rectangular parallelepiped shape including a first surface and a second surface in contact with the first surface, the plurality of light-emitting elements, the plurality of lenses, and the holding jig that fixes the plurality of first optical elements are installed on the first surface, and the second optical element is installed on the second surface. ### Claim 7 (depends on 4) The light source module according to claim 4, wherein the holding jig extends at least to a portion of a side surface with respect to a light output surface of the light-emitting element, and a top surface of the holding jig is higher than top surfaces of the plurality of light-emitting elements. ### Claim 8 (depends on 1) The light source module according to claim 1, wherein the plurality of light-emitting elements are each individually disposed on the radiator. ### Claim 9 (depends on 1) The light source module according to claim 1, wherein the plurality of light-emitting elements are each disposed on the radiator with a sub-mount interposed therebetween. ### Claim 10 (depends on 1) The light source module according to claim 1, wherein the plurality of lenses are integrated. ### Claim 11 (depends on 1) The light source module according to claim 1, wherein the plurality of light-emitting elements output light beams of wavelengths different from one another. ### Claim 12 (depends on 1) The light source module according to claim 1, wherein the plurality of light-emitting elements each comprise a semiconductor laser or a super luminescent diode. ### Claim 13 (depends on 1) The light source module according to claim 1, wherein the second optical element comprises a dichroic prism. ### Claim 14 (depends on 1) The light source module according to claim 1, wherein the plurality of light sources are two-dimensionally disposed on the radiator. ### Claim 15 A method of manufacturing a light source module, the method comprising: disposing a plurality of light-emitting elements on a radiator; disposing a plurality of lenses each of which converts a light beam outputted from corresponding one of the plurality of light-emitting elements into a collimated light beam and output the collimated light beam; disposing a plurality of first optical elements that each reflect the collimated light beam outputted from corresponding one of the plurality of lenses while adjusting an optical axis direction of the collimated light beam; and disposing a second optical element that multiplexes respective light beams reflected from the plurality of first optical elements. ### Claim 16 (depends on 15) The method of manufacturing the light source module according to claim 15, wherein after the plurality of lenses are fixed on the radiator, active implementation of each of the plurality of light-emitting elements is performed. ### Claim 17 (depends on 16) The method of manufacturing the light source module according to claim 16, wherein after the active implementation of each of the plurality of light-emitting elements is performed, the second optical element and a holding jig that fixes the plurality of first optical elements are fixed in this order. ### Claim 18 (depends on 17) The method of manufacturing the light source module according to claim 17, wherein the plurality of first optical elements are adjusted while observing a beam profile of light beams outputted from the plurality of light-emitting elements and multiplexed through the plurality of lenses, the plurality of first optical elements, and the second optical element. ### Claim 19 A projection-type display unit provided with a light source module and a projection optical system that projects a light beam from the light source module, the light source module comprising: a radiator; a plurality of light-emitting elements disposed on the radiator; a plurality of lenses each of which converts a light beam outputted from corresponding one of the plurality of light-emitting elements into a collimated light beam and output the collimated light beam; a plurality of first optical elements that each reflect the collimated light beam outputted from corresponding one of the plurality of lenses while adjusting an optical axis direction of the collimated light beam; and a second optical element that multiplexes respective light beams reflected from the plurality of first optical elements.