# US 2023/0054053 A1 · Light source device and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054053 A1 - Document ID: US20230054053A1 - Status: Published application - Kind: A1 - Application number: 17/791,651 - Filed: 2020-12-24 - Published: 2023-02-23 - Earliest claimed: 2020-01-16 - Assignees: Sony Semiconductor Solutions Corporation - Applicants: Sony Semiconductor Solutions Corporation - Inventors: Fumihiko HANZAWA; Masashi NAKAMURA; Hideaki MOGI; Go ASAYAMA - Web page: https://patentgrep.com/patent/US20230054053A1 ## CPC - G01S 7/4815: {using multiple transmitters} - G02B 3/0056: {arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085)} - G01C 3/08: Use of electric radiation detectors - G01S 7/481: Constructional features, e.g. arrangements of optical elements - G02B 3/0043: {Inhomogeneous or irregular arrays, e.g. varying shape, size, height} - G02B 19/0066: {in the form of an LED array} - G02B 27/18: for optical projection, e.g. combination of mirror and condenser and objective {(photographic, cine and overhead projectors G03B21/00; photographic projection printing G03B27/32; photolithographic projectors G03F7/20; projection television H04N5/74; colour projection television H04N9/31)} - H04N 9/3194: {including sensor feedback} - G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An image can be projected in a wide angular range while an increase in a beam diameter is suppressed. A light source device according to the present disclosure includes: a plurality of light emitting elements divided into a plurality of regions; and an optical unit that includes a plurality of first lens groups having a first focal length and corresponding to the regions of the light source unit on a one-to-one basis, and a second lens group having a second focal length and emitting light having passed through the first lens groups. In the optical unit, for each of the regions, the first focal length is smaller than zero, the second focal length is larger than zero, and each composite focal length of each of the first lens groups and the second lens group is larger than the second focal length. ## Claims ### Claim 1 A light source device comprising: a light source unit that includes a plurality of light emitting elements and is divided into a plurality of regions having at least one light emitting element in one region; and an optical unit that includes a plurality of first lens groups having a first focal length and corresponding to the plurality of regions of the light source unit on a one-to-one basis, each of the plurality of first lens groups including one or more lenses, and a second lens group having a second focal length and emitting light having passed through the plurality of first lens groups, the second lens group including one or more lenses, wherein in the optical unit, for each of the plurality of regions, the first focal length is smaller than zero, the second focal length is larger than zero, and each composite focal length of each of the plurality of first lens groups and the second lens group is larger than the second focal length. ### Claim 2 (depends on 1) The light source device according to claim 1, wherein the plurality of first lens groups includes an integrated first optical element. ### Claim 3 (depends on 1) The light source device according to claim 1, wherein at least one optical surface of the plurality of first lens groups has an aspherical shape. ### Claim 4 (depends on 1) The light source device according to claim 1, wherein at least one optical surface of the second lens group has a free-form surface shape. ### Claim 5 (depends on 1) The light source device according to claim 1, wherein in each of the one or more lenses included in each of the plurality of first lens groups, a medium layer filled with a material having a refractive index substantially same as a refractive index of the one or more lenses is arranged without an air layer interposed between the medium layer and the light source unit, and a boundary surface on a side far from an emission surface of the light source unit is an optical surface having a negative refractive power. ### Claim 6 (depends on 1) The light source device according to claim 1, further comprising a second optical element that is arranged on an emission surface side of the second lens group, wherein the second optical element projects a plurality of zeroth-order projection images formed by the plurality of first lens groups and the second lens group side by side on a projection field. ### Claim 7 (depends on 1) The light source device according to claim 1, wherein the plurality of light emitting elements is provided on a first surface of a substrate, and generated light is emitted through the substrate from a second surface opposite to the first surface, and each of the plurality of first lens groups is arranged at a position corresponding to each of the plurality of light emitting elements on a one-to-one basis on the second surface of the substrate. ### Claim 8 (depends on 7) The light source device according to claim 7, wherein each of the plurality of first lens groups is a concave portion provided in the second surface of the substrate. ### Claim 9 (depends on 8) The light source device according to claim 8, further comprising an antireflection film that is provided on an inner surface of the concave portion and prevents reflection of light from the first surface. ### Claim 10 (depends on 8) The light source device according to claim 8, further comprising a low refractive index film that is provided in the concave portion and has a refractive index lower than a refractive index of the substrate, wherein a region other than the concave portion in the substrate and a surface of the low refractive index film form a plane. ### Claim 11 (depends on 8) The light source device according to claim 8, further comprising one or more layers of functional films that are provided in at least a part of a non-lens region excluding a region of each of the plurality of first lens groups on the second surface of the substrate. ### Claim 12 (depends on 11) The light source device according to claim 11, wherein the functional film is provided by laminating a plurality of functional films. ### Claim 13 (depends on 12) The light source device according to claim 12, wherein the functional film has a structure in which different numbers of the functional films are laminated depending on positions on the substrate. ### Claim 14 (depends on 11) The light source device according to claim 11, wherein the functional film includes an alignment mark. ### Claim 15 (depends on 11) The light source device according to claim 11, wherein the functional film is provided in a region other than a scribe region used when the substrate is diced into individual pieces on the second surface of the substrate. ### Claim 16 (depends on 8) The light source device according to claim 8, wherein the concave portion is positioned in a region corresponding to each of the plurality of light emitting elements on a one-to-one basis on the second surface of the substrate. ### Claim 17 (depends on 16) The light source device according to claim 16, wherein the concave portion is a groove formed using dishing generated by chemical mechanical polishing. ### Claim 18 An electronic apparatus comprising: a light source device including a light source unit that includes a plurality of light emitting elements and is divided into a plurality of regions having at least one light emitting element in one region, and an optical unit that includes a plurality of first lens groups having a first focal length and corresponding to the plurality of regions of the light source unit on a one-to-one basis, each of the plurality of first lens groups including one or more lenses, and a second lens group having a second focal length and emitting light having passed through the plurality of first lens groups, the second lens group including one or more lenses, wherein in the optical unit, for each of the plurality of regions, the first focal length is smaller than zero, the second focal length is larger than zero, and each composite focal length of each of the plurality of first lens groups and the second lens group is larger than the second focal length; and a driving unit that drives the plurality of light emitting elements to cause each of the plurality of light emitting elements to generate light. ### Claim 19 (depends on 18) The electronic apparatus according to claim 18, further comprising a distance measuring device that includes a light receiving unit configured to receive light and that performs distance measurement on a basis of a timing at which light is generated by the driving unit and a timing at which the light is received by the light receiving unit.