# US 9,752,758 B2 · Illumination apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,758 B2 - Document ID: US9752758B2 - Status: Granted - Kind: B2 - Application number: 15/318,345 - Filed: 2015-05-25 - Published: 2017-05-04 - Granted: 2017-09-05 - Earliest claimed: 2014-06-27 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Shinji Kadoriku; Ryoma Murase; Takashi Matsuda; Masaru Fujita - Web page: https://patentgrep.com/patent/US9752758B2 ## CPC - F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device - B60Q 1/12: due to steering position - F21S 41/00: Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps (reversing lights F21S43/00) - F21S 41/147: the main emission direction of the LED being angled to the optical axis of the illuminating device - F21S 41/151: arranged in one or more lines - F21S 41/153: arranged in a matrix - F21S 41/16: Laser light sources - F21S 41/24: Light guides - F21S 41/255: Lenses with a front view of circular or truncated circular outline - F21S 41/26: Elongated lenses - F21S 41/275: Lens surfaces, e.g. coatings or surface structures - F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805} - F21S 41/32: Optical layout thereof - F21S 41/322: {the reflector using total internal reflection} - F21S 41/635: {by moving refractors, filters or transparent cover plates} - F21S 41/663: by switching light sources (by switching incandescent light sources F21S41/162) - 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 5/008: {Combination of two or more successive refractors along an optical axis} - F21V 7/0066: {specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified (F21V7/16 - F21V7/30 take precedence)} - F21V 7/0091: {using total internal reflection} - F21V 13/04: the elements being reflectors and refractors {(for vehicle rear lights F21S43/40)} - B60Q 2300/122: Steering angle - F21W 2102/00: Exterior vehicle lighting devices for illuminating purposes - F21W 2102/135: the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions - F21W 2102/145: wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam - F21W 2102/19: for curves - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS ## Abstract An illumination apparatus includes a light-emitting element, a first lens, and a second lens. A first incident surface of the first lens faces the light-emitting element, and guides a light beam from the light-emitting element to a radiation port. A second incident surface of the first lens guides a light beam not passing through the first incident surface to a direction toward the outer periphery of the first lens. A first reflection surface of the first lens reflects a light beam from the second incident surface to guide the light beam to the radiation port. ## Claims ### Claim 1 An illumination apparatus, comprising: a light-emitting element; a first lens that is placed facing the light-emitting element and that has a radiation port from which a light beam is emitted; and a second lens that is placed facing the radiation port, wherein the first lens further has a first incident surface that faces the light-emitting element and that guides a light beam from the light-emitting element to the radiation port, a second incident surface that guides a light beam not passing through the first incident surface to a direction toward the outer periphery of the first lens, a first reflection surface that reflects a light beam from the second incident surface to guide the light beam to the radiation port, and a second reflection surface that reflects a light beam passing through the first incident surface and then deviating from a direction toward the radiation port, and a light beam reflected on the first reflection surface and then deviating from the direction toward the radiation portion, to guide these light beams to the radiation port. ### Claim 2 (depends on 1) The illumination apparatus according to claim 1, wherein the second lens emits to a defined region the light beam entering therein from an optical axis. ### Claim 3 (depends on 1) The illumination apparatus according to claim 1, wherein the first lens collects and radiates the light beams that enter therein. ### Claim 4 (depends on 1) The illumination apparatus according to claim 1, wherein a step is provided on a side surface of the first lens. ### Claim 5 (depends on 1) The illumination apparatus according to claim 1, wherein the shape of the radiation port is quadrangular, and a step is provided in one side thereof. ### Claim 6 (depends on 1) The illumination apparatus according to claim 1, wherein parts of sides of the quadrangle of the radiation port are tapered toward a side surface of the first lens. ### Claim 7 (depends on 6) The illumination apparatus according to claim 6, wherein the tapered parts are formed in a staircase pattern. ### Claim 8 (depends on 1) The illumination apparatus according to claim 1, wherein the radiation port of the first lens has a shape that is formed by deleting a part of any one of the followings: quadrangle, ellipse, semi-circle, and semi-ellipse. ### Claim 9 (depends on 1) The illumination apparatus according to claim 1, wherein the light-emitting element comprises multiple light-emitting elements, the first lens comprises multiple first lenses that face the respective multiple light-emitting elements, and that each have the radiation port, and the second lens comprises multiple second lenses that are placed facing the respective radiation ports of the multiple first lenses. ### Claim 10 (depends on 9) The illumination apparatus according to claim 9, wherein a shift amount between positions of centers of the radiation ports of the multiple first lenses and corresponding central axes of the multiple second lenses vary with locations in the illumination apparatus. ### Claim 11 (depends on 9) The illumination apparatus according to claim 9, wherein in at least one of the radiation ports of the multiple first lenses has a shape different from shapes of the other radiation ports. ### Claim 12 (depends on 9) The illumination apparatus according to claim 9, wherein one of the multiple first lenses and a corresponding one of the multiple second lenses form a lens unit, such that multiple lens units are provided, and the multiple lens units have respective different light-radiation regions. ### Claim 13 (depends on 12) The illumination apparatus according to claim 12, wherein the multiple lens units are placed so that the different light-radiation regions are combined to produce a stepped light-radiation region. ### Claim 14 (depends on 9) The illumination apparatus according to claim 9, wherein the radiation ports of the multiple first lenses each have a shape that is formed by deleting a part of any one of the followings: quadrangle, ellipse, semi-circle, and semi-ellipse.