# US 10,480,748 B2 · Lens and optoelectronic lighting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,748 B2 - Document ID: US10480748B2 - Status: Granted - Kind: B2 - Application number: 15/572,551 - Filed: 2016-05-10 - Published: 2018-04-26 - Granted: 2019-11-19 - Earliest claimed: 2015-05-12 - Assignees: OSRAM Opto Semiconductors GmbH - Applicants: OSRAM Opto Semiconductors GmbH - Inventors: Ulrich Streppel - Web page: https://patentgrep.com/patent/US10480748B2 ## CPC - F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)} - F21V 5/004: {using microlenses} - F21V 5/04: of lens shape - F21V 7/22: characterised by materials, surface treatments or coatings, e.g. dichroic reflectors - G02B 19/0028: {refractive and reflective surfaces, e.g. non-imaging catadioptric systems} - G02B 19/0066: {in the form of an LED array} - G02B 27/0905: {Dividing and/or superposing multiple light beams} - G02B 27/0938: {Using specific optical elements} - G02B 27/30: Collimators - G03B 15/05: Combinations of cameras with electronic flash apparatus; Electronic flash units - F21V 5/02: of prismatic shape (F21V5/04 takes precedence) - F21Y 2115/10: Light-emitting diodes [LED] - G03B 2215/0567: Solid-state light source, e.g. LED, laser - G03B 2215/0582: Reflectors - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - 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) - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract A lens includes a base body having a light incidence face through which light can enter the base body and a light exit face, through which light which has entered the base body can emerge, the light exit face includes a microlens structure having a plurality of microlenses, the light incidence face has at least two collimator segments that collimate light and a light entry region formed differently from the collimator segments, the base body has at least two back-reflection regions respectively assigned to one of the two collimator segments, to reflect back light collimated by a corresponding collimator segment, in a direction of the corresponding collimator segment, and the base body is a reflection region to reflect light that has entered through the light incidence region in the direction of the microlens structure so that the reflected light can emerge from the base body through the microlens structure. ## Claims ### Claim 1 A lens comprising: a base body, wherein the base body has a light incidence face through which light can enter the base body, the base body has a light exit face through which light which has entered the base body can emerge, the light exit face comprises a microlens structure having a plurality of microlenses, the light incidence face has at least two collimator segments that collimate light, the light incidence face has a light entry region formed differently from the collimator segments, the base body has at least two back-reflection regions respectively assigned to one of the two collimator segments to reflect back light collimated by a corresponding collimator segment in a direction of the corresponding collimator segment, the base body is a reflection region to reflect light that has entered through the light incidence region in the direction of the microlens structure so that the reflected light can emerge from the base body through the microlens structure, and the back-reflection regions respectively comprise one or more prism rings, concentric relative to the optical axis of the collimator segment assigned to the corresponding back-reflection region, comprising a plurality of prisms for total reflection of the collimated light. ### Claim 2 (depends on 1) The lens according to claim 1, wherein an angle between a respective prism face of the prisms of the one or more prism rings and of the corresponding optical axis of the assigned collimator segment is 40° to 50°. ### Claim 3 (depends on 1) The lens according to claim 1, wherein a respective prism face of the prisms has a spherical, aspherical, convex or concave curvature. ### Claim 4 (depends on 1) The lens according to claim 1, wherein the microlenses are formed as aspherical, rotationally symmetrical microlenses respectively having an equal asphericity coefficient or at least partially different asphericity coefficients. ### Claim 5 (depends on 1) The lens according to claim 1, wherein the microlens structure is formed such that each light beam formed by the reflected light and striking a microlens of the microlens structure, has a homogeneous distribution over a predetermined emission region after emerging from the base body. ### Claim 6 (depends on 1) The lens according to claim 1, wherein the reflection region comprises a plurality of facets that collimate the incident light in the direction of the microlens structure. ### Claim 7 (depends on 6) The lens according to claim 6, wherein the facets respectively have a curvature. ### Claim 8 (depends on 1) The lens according to claim 1, wherein the base body is free from a reflection coating. ### Claim 9 (depends on 1) The lens according to claim 1, wherein the base body is fixated as an injection-molded component. ### Claim 10 (depends on 1) The lens according to claim 1, wherein the base body comprises a mounting flange, extending around the microlens structure, for mounting the base body on a housing. ### Claim 11 (depends on 1) The lens according to claim 1, wherein the collimator segments are respectively formed as a collimator lens. ### Claim 12 (depends on 1) The lens according to claim 1, wherein the collimator segments are formed in a depression, bounded by the light incidence region of the base body. ### Claim 13 (depends on 1) An optoelectronic lighting device comprising: the lens according to claim 1, and a plurality of optoelectronic semiconductor components, respectively having a light-emitting face facing toward the light incidence face, wherein the plurality of semiconductor components are respectively assigned to one of the collimator segments so that light emitted by the respective light-emitting face of the semiconductor components can be partially collimated by the assigned collimator segment, the collimated light can be reflected back in the direction of the collimator segment by the corresponding back-reflection region, and can be collimated by the collimator segment in the direction of the light-emitting face, and so that the light emitted by the respective light-emitting face of the semiconductor components can enter the base body partially through the light incidence region, can be reflected by the back-reflection region in the direction of the microlens structure, and can emerge from the base body through the microlens structure. ### Claim 14 (depends on 13) The optoelectronic lighting device according to claim 13, wherein a respective separating face fouled between the semiconductor components has a reflection coating that reflects light in the direction of the light incidence face. ### Claim 15 (depends on 13) The optoelectronic lighting device according to claim 13, further comprising a housing having a recess, the semiconductor components being arranged in the housing with the light-emitting faces facing toward the recess, the recess being covered by the base body. ### Claim 16 (depends on 15) The optoelectronic lighting device according to claim 15, wherein the housing comprises a plurality of housing side walls enclosing a housing interior, a respective face, facing toward the housing interior, of the housing side walls having a reflection coating. ### Claim 17 (depends on 15) The optoelectronic lighting device according to claim 15, comprising the lens wherein the base body comprises a mounting flange, extending around the microlens structure, for mounting the base body on a housing, and the housing has a mounting face extending around the recess, the mounting flange of the base body being arranged on the mounting face. ### Claim 18 (depends on 13) The optoelectronic lighting device according to claim 13, wherein the lighting device is configured as a flash. ### Claim 19 (depends on 13) A mobile terminal, comprising the optoelectronic lighting device according to claim 13.