# US 11,441,755 B2 · Illumination device and electronic apparatus including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,755 B2 - Document ID: US11441755B2 - Status: Granted - Kind: B2 - Application number: 17/497,583 - Filed: 2021-10-08 - Published: 2022-01-27 - Granted: 2022-09-13 - Earliest claimed: 2018-09-20 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seunghoon Han; Jangwoo You; Minkyung Lee - Web page: https://patentgrep.com/patent/US11441755B2 ## CPC - G01B 11/25: by projecting a pattern, e.g. {one or more lines,} moiré fringes on the object (G01B11/255 takes precedence {; image analysis for depth or shape recovery G06T7/50}) - F21V 5/004: {using microlenses} - F21V 5/045: {the lens having discontinuous faces, e.g. Fresnel lenses} - G06V 10/145: Illumination specially adapted for pattern recognition, e.g. using gratings - H05B 47/105: in response to determined parameters - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract Provided are an illumination device and an electronic apparatus. The illumination device includes a light source configured to emit light, a surface light source layer configured to convert the light emitted from the light source to surface light, a focusing lens configured to focus the surface light from the surface light source layer, and a display panel including an aperture through which light focused by the focusing lens passes. ## Claims ### Claim 1 An illumination device comprising: a light source configured to emit light; a focusing lens configured to focus the light from the light source; and a display panel comprising an aperture through which the light focused by the focusing lens passes, wherein the light from the light source illuminates an object through the aperture, and wherein the aperture is provided corresponding to an area of 20×20 pixels or less with respect to pixels included in the display panel. ### Claim 2 (depends on 1) The illumination device of claim 1, wherein further comprising a surface light source layer disposed at a focal length of the focusing lens from the focusing lens. ### Claim 3 (depends on 2) The illumination device of claim 2, wherein the surface light source layer comprises a mask having a pattern configured to form structured light. ### Claim 4 (depends on 3) The illumination device of claim 3, wherein the mask comprises materials having different transmittances which are respectively configured to transmit the light emitted from the light source or block the light emitted from the light source. ### Claim 5 (depends on 2) The illumination device of claim 2, wherein the surface light source layer comprises a diffuser. ### Claim 6 (depends on 5) The illumination device of claim 5, wherein the diffuser comprises a microlens array, a metalens array, or a random optical structure. ### Claim 7 (depends on 6) The illumination device of claim 6, wherein the microlens array or the metalens array has a size that is equal to or less than a pitch of each of the plurality of light-emitting elements. ### Claim 8 (depends on 6) The illumination device of claim 6, wherein the random optical structure comprises grains, and each of the grains has an average size that is equal to or less than twice a wavelength of the light emitted from the light source. ### Claim 9 (depends on 6) The illumination device of claim 6, wherein the random optical structure comprises a meta-surface having a transmission phase. ### Claim 10 An electronic apparatus comprising: an illumination device configured to emit light to an object; a sensor configured to receive light reflected from the object; and a processor configured to acquire information about the object based on the light received by the sensor, wherein the illumination device comprises: a light source; a focusing lens configured to focus the light from the light source; and an aperture through which the light focused by the focusing lens passes, wherein the aperture is provided corresponding to an area of 20×20 pixels or less with respect to pixels included in a display panel. ### Claim 11 (depends on 10) The electronic apparatus of claim 10, wherein further comprising a surface light source layer disposed at a focal length of the focusing lens from the focusing lens. ### Claim 12 (depends on 11) The electronic apparatus of claim 11, wherein the surface light source layer comprises a mask having a pattern configured to form structured light. ### Claim 13 (depends on 12) The electronic apparatus of claim 12, wherein the mask comprises materials having different transmittances which are respectively configured to transmit the light emitted from the light source or block the light emitted from the light source. ### Claim 14 (depends on 11) The electronic apparatus of claim 11, wherein the surface light source layer comprises a diffuser. ### Claim 15 (depends on 14) The electronic apparatus of claim 14, wherein the diffuser comprises a microlens array, a metalens array, or a random optical structure. ### Claim 16 (depends on 15) The electronic apparatus of claim 15, wherein the microlens array or the metalens array has a size that is equal to or less than a pitch of each of the plurality of light-emitting elements.