# US 11,441,749 B2 · Lighting assembly for electrically adjustable light distributions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,749 B2 - Document ID: US11441749B2 - Status: Granted - Kind: B2 - Application number: 16/904,547 - Filed: 2020-06-17 - Published: 2020-10-29 - Granted: 2022-09-13 - Earliest claimed: 2019-04-04 - Assignees: Fusion Optix, Inc. - Applicants: Fusion Optix, Inc. - Inventors: Terence Yeo; John Montminy; Lee Mantha; Michael Demas; Timothy Kelly - Web page: https://patentgrep.com/patent/US11441749B2 ## CPC - F21S 10/00: Lighting devices or systems producing a varying lighting effect - F21S 4/28: rigid, e.g. LED bars - F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling} - F21V 5/02: of prismatic shape (F21V5/04 takes precedence) - F21V 5/045: {the lens having discontinuous faces, e.g. Fresnel lenses} - F21V 23/008: {the casing being outside the housing of the lighting device} - F21V 23/04: the elements being switches (safety devices F21V25/00) - F21W 2131/40: Lighting for industrial, commercial, recreational or military use - F21Y 2105/16: square or rectangular, e.g. for light panels - F21Y 2105/18: annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam - F21Y 2115/10: Light-emitting diodes [LED] - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - 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 - 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 Disclosed is an electrically addressable lighting assembly for providing different adjustable light distribution patterns. The light distributions can be pre-programmed or adjusted once installed in an environment by use of a controller or control device. The lighting assembly comprises at least one primary optical element such as a focusing lens or light guide, which can be backlit and/or edgelit, and light sources arranged in two or more independently addressed electrical channels. Each light source channel being both physically separated and electrically adjustable in order to control light input into the optical element and subsequently adjust the light distribution output of the lighting assembly, The lighting assembly can be used to provide a wide range of symmetric and asymmetric lighting distributions for direct or indirect lighting as well as focusing or defocusing a projected beam in a spotlight or downlight configuration, The lighting assembly is therefore useful in a wide range of typical indoor and outdoor lighting applications including downlighting, spotlighting, wall washing, cove lighting, retail lighting, warehouse lighting, It is also possible to produce useful tunable white or color related lighting effects wherein different color temperature variants of white or different colors, such as red, green or blue might have different lighting distributions. ## Claims ### Claim 1 A lighting assembly for providing multiple adjustable light distribution patterns in an environment, the lighting assembly comprising; a. two or more light source channels, each being both spatially separated and electrically controllable; b. means for controlling the electrical power to each light source channel; c. a primary transmissive optical element fixedly arranged with respect to each light source channels such that; i. input light from each light source channel is incident upon the input face of a mutually common region of the primary transmissive optical element but at differing beam input angles; ii. light from each light source channel is redirected by the mutually common region of the primary transmissive optical element and has a unique light distribution output upon exiting the primary transmissive optical element; iii. the primary transmissive optical element has at least one focal region inside the lighting assembly, wherein electrical power is proportionally allocated among light source channels to regulate light distribution patterns of the lighting assembly. ### Claim 2 (depends on 1) The lighting assembly of claim 1 wherein the primary transmissive optical element further comprises at least one Fresnel lens pattern, each Fresnel lens pattern having a focal axis. ### Claim 3 (depends on 1) The lighting assembly of claim 1 wherein the focal region is a focal point or focal line. ### Claim 4 (depends on 1) The lighting assembly of claim 1 wherein a first light source channel is positioned outside a focal region. ### Claim 5 (depends on 4) The lighting assembly of claim 4 wherein a first light source channel is positioned outside a focal region and a second light source channel is positioned in a focal region. ### Claim 6 (depends on 1) The lighting assembly of claim 1 wherein proportional allocation of electrical power to individual light source channels is performed by a lighting controller operatively coupled to the light source channels configured to independently control each light source channel and proportionally divide electrical power between light source channels to regulate light distribution patterns. ### Claim 7 (depends on 1) The lighting assembly of claim 1 wherein proportional allocation of electrical power to individual light source channels is achieved within a LED board having an electrical circuit including a component providing electrical impedance to reduce current flow through a specific light source channel. ### Claim 8 (depends on 7) The lighting assembly of claim 7 wherein the component providing electrical impedance is a resistor. ### Claim 9 (depends on 1) The lighting assembly of claim 1 wherein each light source channel has an optical axis and at least one optical axis is offset from a focal axis. ### Claim 10 (depends on 1) The lighting assembly of claim 1 further comprising an auxiliary transmissive optical element positioned sequentially in series before or after the primary transmissive optical element. ### Claim 11 (depends on 10) The lighting assembly of claim 10 wherein visual brightness uniformity is increased as compared to a configuration without the auxiliary transmissive optical element. ### Claim 12 (depends on 10) The lighting assembly of claim 10 wherein the auxiliary transmissive optical element comprises lenticular features oriented substantially perpendicular to a Fresnel lens pattern in the primary transmissive optical element. ### Claim 13 (depends on 10) The lighting assembly of claim 10 wherein the unique light distribution of the primary transmissive optical element is redirected in an asymmetric manner by the auxiliary transmissive optical element. ### Claim 14 (depends on 1) The lighting assembly of claim 1 wherein the configuration of light source channels is configured as a geometry selected from the following group; linear array, parallel rows, rectangular grid, circular pattern, concentric rings. ### Claim 15 (depends on 1) The lighting assembly of claim 1 wherein concentric light source channels are used to control lighting assembly beam output width; a center light source channel producing the narrowest beam and an outer concentric ring producing the widest beam. ### Claim 16 (depends on 15) The lighting assembly of claim 15 wherein the primary transmissive optical element is of circular shape with a centered circular Fresnel lens pattern. ### Claim 17 (depends on 1) The lighting assembly of claim 1 further comprising a reflector. ### Claim 18 (depends on 17) The lighting assembly of claim 17 wherein the reflector is of asymmetric shape and the lighting assembly has an asymmetric light distribution. ### Claim 19 (depends on 1) The lighting assembly of claim 1 wherein the light distribution pattern of the lighting assembly is selected from a group including wall washing, cove lighting, task lighting, ambient lighting and accent lighting. ### Claim 20 (depends on 1) The lighting assembly of claim 1 wherein angular spread of the light distribution is controlled along an axis substantially perpendicular to one of the two or more light source channels. ### Claim 21 A lighting assembly for providing multiple adjustable light distribution patterns in an environment, the lighting assembly comprising; a. two or more light sources, each being both spatially separated and electrically controllable; b. means for controlling the electrical power to each light source; c. an optical element adjacent to and disposed between a first light source and second light source such that; i. light from a first light source is input into a first input face of the optical element and a second light source is input into a second input face of the optical element; ii. light from each light source is redirected from the optical element out of a common output face and has a unique light distribution; wherein electrical power is proportionally allocated among light sources to regulate light distribution patterns emitted from the optical element to produce a light distribution pattern which is directional and non-lambertian. ### Claim 22 (depends on 21) The lighting assembly of claim 21 wherein the optical element is a light guide. ### Claim 23 (depends on 21) The lighting assembly of claim 21 wherein one or more of the light sources is an LED or linear array of LEDs. ### Claim 24 (depends on 21) The lighting assembly of claim 21 wherein the light distribution pattern of the lighting assembly is selected from a group including wall washing, cove lighting, task lighting, ambient lighting and accent lighting. ### Claim 25 (depends on 21) The lighting assembly of claim 21 wherein angular spread of the light distribution is controlled along an axis substantially perpendicular to one of the two or more light sources. ### Claim 26 A lighting assembly for providing multiple adjustable light distribution patterns in an environment, the lighting assembly comprising; a. two or more light source channels, each being both spatially separated and electrically controllable; b. means for controlling the electrical power to each light source channel; c. a primary transmissive optical element fixedly arranged with respect to a first light source channel and second light source channel such that; i. light from a first light source channel is input into a first input face and light input from a second light source is input into a second input face; ii. light from each light source channel is redirected by the primary light transmissive optical element and has a unique light distribution output upon exiting the transmissive optical element; iii. with respect to the first light source channel the primary transmissive optical element is a light guide but with respect to the second light source channel the primary transmissive light source channel is not a light guide but rather a lens; wherein electrical power is proportionally allocated among light source channels to regulate light distribution patterns of the lighting assembly. ### Claim 27 (depends on 26) The lighting assembly of claim 26 wherein each light source channel is comprised of a different color light source. ### Claim 28 (depends on 26) The lighting assembly of claim 26 wherein the configuration of light source channels is configured as a geometry selected from the following group; linear array, parallel rows, rectangular grid, circular pattern, concentric rings. ### Claim 29 (depends on 26) The lighting assembly of claim 26 wherein the light distribution pattern of the lighting assembly is selected from a group including wall washing, cove lighting, task lighting, ambient lighting and accent lighting. ### Claim 30 (depends on 26) The lighting assembly of claim 26 wherein angular spread of the light distribution is controlled along an axis substantially perpendicular to one of the two or more light source channels.