# US 2016/0258593 A1 · Lighting systems including asymmetric lens modules for selectable light distribution > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0258593 A1 - Document ID: US20160258593A1 - Status: Published application - Kind: A1 - Application number: 14/702,800 - Filed: 2015-05-04 - Published: 2016-09-08 - Earliest claimed: 2015-03-03 - Assignees: Ecosense Lighting Inc. - Applicants: EcoSense Lighting Inc. - Inventors: Elizabeth Rodgers; Donald Peifer - Web page: https://patentgrep.com/patent/US20160258593A1 ## CPC - F21V 5/004: {using microlenses} - F21V 5/005: {using microprisms} - F21V 5/008: {Combination of two or more successive refractors along an optical axis} - F21V 5/04: of lens shape - F21V 5/10: comprising photoluminescent material - F21V 17/002: {with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence)} - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 Lighting system including: lighting module having semiconductor light-emitting device; first lens module; and asymmetric second lens module. Second lens module includes diverging lens configured for causing divergence of converged light emissions away from lens axis. Second lens module includes: lens body having light output surface spaced apart along light transmission axis from light input surface, lens body having longitudinal axis and lateral axis, the longitudinal and lateral axes being transverse to light transmission axis; light output surface having asymmetric curvilinear contour formed by convex region overlapping in directions along lateral axis with concave region, the asymmetric curvilinear contour uniformly extending in directions along the longitudinal axis. ## Claims ### Claim 1 A lighting system, comprising: a lighting module including a semiconductor light-emitting device configured for emitting light emissions along a central light emission axis; a first lens module including a first converging lens, the first converging lens being configured for causing convergence of some of the light emissions of the semiconductor light-emitting device to form converged light emissions along the central light emission axis having a first half-width-half-maximum (HWHM), the first converging lens having a first light output surface being spaced apart along a first lens axis from a first light input surface, the first converging lens further having a first total internal reflection side surface being spaced apart around the first lens axis and having a first frusto-conical shape extending between the first light input and output surfaces of the first converging lens; a second lens module including a second converging lens, the second converging lens being configured for causing convergence of some of the light emissions of the semiconductor light-emitting device to form converged light emissions along the central light emission axis having a second HWHM being different than the first HWHM, the second converging lens having a second light output surface being spaced apart along a second lens axis from a second light input surface, the second converging lens further having a second total internal reflection side surface being spaced apart around the second lens axis and having a second frusto-conical shape extending between the second light input and output surfaces of the second converging lens; and a third lens module including a first diverging lens having a third lens axis, the first diverging lens being configured for causing divergence of some of the converged light emissions away from the third lens axis, the third lens module including: a lens body having a light output surface spaced apart along a light transmission axis from a light input surface, the lens body having a longitudinal axis and a lateral axis, the longitudinal and lateral axes being transverse to the light transmission axis; the light output surface having an asymmetric curvilinear contour being formed by a convex region overlapping in directions along the lateral axis with a concave region, the asymmetric curvilinear contour uniformly extending in directions along the longitudinal axis; wherein the lighting system is configured for detachably installing the first lens module or the second lens module in the lighting module between the semiconductor light-emitting device and the third lens module; and wherein the lighting system is configured for aligning the first or second lens axis with the central light emission axis and the third lens axis. ### Claim 2 (depends on 1) The lighting system of claim 1, wherein the light input surface of the third lens module includes an array of diverging lenses being configured for causing divergence of light away from the light transmission axis in directions along the longitudinal axis of the lens body. ### Claim 3 (depends on 1) The lighting system of claim 1, further including: a second lighting module including a second semiconductor light-emitting device configured for emitting further light emissions along a second central light emission axis; a fourth lens module including a third converging lens, the third converging lens being configured for causing convergence of some of the light emissions of the second semiconductor light-emitting device to form further converged light emissions along the second central light emission axis having a fourth HWHM, the third converging lens having a fourth light output surface being spaced apart along a fourth lens axis from a fourth light input surface, the third converging lens further having a third total internal reflection side surface being spaced apart around the fourth lens axis and having a third frusto-conical shape extending between the fourth light input and output surfaces of the third converging lens; a fifth lens module including a fourth converging lens, the fourth converging lens being configured for causing convergence of some of the light emissions of the second semiconductor light-emitting device to form further converged light emissions along the second central light emission axis having a fifth HWHM being different than the fourth HWHM, the fourth converging lens having a fifth light output surface being spaced apart along a fifth lens axis from a fifth light input surface, the fourth converging lens further having a fourth total internal reflection side surface being spaced apart around the fifth lens axis and having a fourth frusto-conical shape extending between the fifth light input and output surfaces of the fourth converging lens; and a sixth lens module including a second diverging lens having a sixth lens axis, the second diverging lens being configured for causing divergence of some of the converged light emissions away from the sixth lens axis, the third lens module including: a lens body having a light output surface spaced apart along a light transmission axis from a light input surface, the lens body having a longitudinal axis and a lateral axis, the longitudinal and lateral axes being transverse to the light transmission axis; the light output surface having an asymmetric curvilinear contour being formed by a convex region overlapping in directions along the lateral axis with a concave region, the asymmetric curvilinear contour uniformly extending in directions along the longitudinal axis; wherein the lighting system is configured for detachably installing the fourth lens module or the fifth lens module in the second lighting module between the second semiconductor light-emitting device and the sixth lens module; and wherein the lighting system is configured for aligning the fourth or fifth lens axis with the second central light emission axis and the sixth lens axis. ### Claim 4 (depends on 3) The lighting system of claim 3, wherein the light input surface of the third lens module includes an array of diverging lenses being configured for causing divergence of light away from the light transmission axis in directions along the longitudinal axis of the lens body. ### Claim 5 (depends on 1) The lighting system of claim 1, wherein the light input surface of the third lens module has the array of diverging lenses as including a lens screen having lenticular or microprismatic features. ### Claim 6 (depends on 5) The lighting system of claim 5, wherein the light input surface of the third lens module has the lens screen as including an array of lenticular toroidal lenses. ### Claim 7 (depends on 6) The lighting system of claim 6, wherein the light input surface of the third lens module has the array of lenticular toroidal lenses as including a plurality of convex regions being interposed between a plurality of concave regions, each of the pluralities of the convex regions and of the concave regions extending in directions along the lateral axis. ### Claim 8 (depends on 1) The lighting system of claim 1, wherein the light output surface of the third lens module includes a first end being spaced apart along the lateral axis from a second end; and wherein the asymmetric curvilinear contour extends from the first end to the second end. ### Claim 9 (depends on 8) The lighting system of claim 8, wherein the convex region of the asymmetric curvilinear contour of the third lens module extends from the first end of the light output surface towards the light transmission axis. ### Claim 10 (depends on 9) The lighting system of claim 9, wherein the concave region of the asymmetric curvilinear contour of the third lens module extends from the second end of the light output surface towards the light transmission axis. ### Claim 11 (depends on 8) The lighting system of claim 8, wherein the light output surface of the third lens module has a ridge extending in directions along the longitudinal axis and being located at a greatest distance, in directions along the light transmission axis, of the light output surface away from the light input surface. ### Claim 12 (depends on 9) The lighting system of claim 9, wherein the ridge of the third lens module is at a location, in directions along the lateral axis, being between the light transmission axis and the first end of the light output surface. ### Claim 13 (depends on 11) The lighting system of claim 11, wherein a portion of the light output surface of the third lens module extends for a distance in directions along the lateral axis from the first end to the light transmission axis, and wherein the ridge is on the portion of the light output surface at a location being at within a range of between about 30% and about 70% along the distance extending from the first end to the light transmission axis. ### Claim 14 (depends on 11) The lighting system of claim 11, wherein a portion of the light output surface of the third lens module extends for a distance in directions along the lateral axis from the first end to the light transmission axis, and wherein the ridge is on the portion of the light output surface at a location being at within a range of between about 40% and about 60% along the distance extending from the first end to the light transmission axis. ### Claim 15 (depends on 11) The lighting system of claim 11, wherein the convex region of the asymmetric curvilinear contour of the third lens module has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is within a range of between about 30 degrees and about 40 degrees. ### Claim 16 (depends on 11) The lighting system of claim 11, wherein the convex region of the asymmetric curvilinear contour of the third lens module has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is within a range of between about 33 degrees and about 37 degrees. ### Claim 17 (depends on 11) The lighting system of claim 11, wherein the convex region of the asymmetric curvilinear contour of the third lens module has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is about 35 degrees. ### Claim 18 (depends on 8) The lighting system of claim 8, wherein the asymmetric curvilinear contour of the light output surface of the third lens module has an inflection point between the convex region and the concave region. ### Claim 19 (depends on 18) The lighting system of claim 18, wherein the light output surface of the third lens module extends for a distance in directions along the lateral axis from the first end to the second end, and wherein the inflection point is on the light output surface at a location being at within a range of between about 40% and about 60% along the distance extending from the first end to the second end. ### Claim 20 (depends on 1) The lighting system of claim 1, being configured for emitting light having a full width half maximum beam width being within a range of between about 7 degrees and about 30 degrees. ### Claim 21 (depends on 1) The lighting system of claim 1, being configured for emitting light having a full width half maximum beam width being within a range of between about 10 degrees and about 20 degrees. ### Claim 22 (depends on 1) The lighting system of claim 1, being configured for emitting light as being distributed on a planar surface. ### Claim 23 (depends on 22) The lighting system of claim 22, being configured for causing a luminance of light reflected by the planar surface to have a ratio of maximum luminance divided by minimum luminance being about 4 or less. ### Claim 24 (depends on 22) The lighting system of claim 22, being configured for causing a luminance of light reflected by the planar surface to have a ratio of maximum luminance divided by minimum luminance being within a range of between about 4.0 and about 1.8. ### Claim 25 (depends on 22) The lighting system of claim 22, being configured for causing a luminance of light reflected by the planar surface to have a ratio of average luminance divided by minimum luminance being about 2 or less. ### Claim 26 (depends on 22) The lighting system of claim 22, being configured for causing a luminance of light reflected by the planar surface to have a ratio of average luminance divided by minimum luminance being within a range of between about 2.1 and about 1.2. ### Claim 27 A lens device, comprising: a lens body having a light output surface spaced apart along a light transmission axis from a light input surface, the lens body having a longitudinal axis and a lateral axis, the longitudinal and lateral axes being transverse to the light transmission axis; the light input surface including an array of diverging lenses being configured for causing divergence of light away from the light transmission axis in directions along the longitudinal axis of the lens body; the light output surface having an asymmetric curvilinear contour being formed by a convex region overlapping in directions along the lateral axis with a concave region, the asymmetric curvilinear contour uniformly extending in directions along the longitudinal axis. ### Claim 28 (depends on 27) The lens device of claim 27, wherein the light output surface includes a first end being spaced apart along the lateral axis from a second end; and wherein the asymmetric curvilinear contour extends from the first end to the second end. ### Claim 29 (depends on 27) The lens device of claim 27, wherein the convex region of the asymmetric curvilinear contour extends from the first end of the light output surface towards the light transmission axis. ### Claim 30 (depends on 27) The lens device of claim 27, wherein the concave region of the asymmetric curvilinear contour extends from the second end of the light output surface towards the light transmission axis. ### Claim 31 (depends on 27) The lens device of claim 27, wherein the light output surface has a ridge extending in directions along the longitudinal axis and being located at a greatest distance, in directions along the light transmission axis, of the light output surface away from the light input surface. ### Claim 32 (depends on 31) The lens device of claim 31, wherein the ridge is at a location, in directions along the lateral axis, being between the light transmission axis and the first end of the light output surface. ### Claim 33 (depends on 31) The lens device of claim 31, wherein a portion of the light output surface extends for a distance in directions along the lateral axis from the first end to the light transmission axis, and wherein the ridge is on the portion of the light output surface at a location being at within a range of between about 30% and about 70% along the distance extending from the first end to the light transmission axis. ### Claim 34 (depends on 31) The lens device of claim 31, wherein a portion of the light output surface extends for a distance in directions along the lateral axis from the first end to the light transmission axis, and wherein the ridge is on the portion of the light output surface at a location being at within a range of between about 40% and about 60% along the distance extending from the first end to the light transmission axis. ### Claim 35 (depends on 31) The lens device of claim 31, wherein the convex region of the asymmetric curvilinear contour has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is within a range of between about 30 degrees and about 40 degrees. ### Claim 36 (depends on 31) The lens device of claim 31, wherein the convex region of the asymmetric curvilinear contour has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is within a range of between about 33 degrees and about 37 degrees. ### Claim 37 (depends on 31) The lens device of claim 31, wherein the convex region of the asymmetric curvilinear contour has an angle of elevation at the first end of the light output surface from the lateral axis to the ridge, and wherein the angle of elevation is about 35 degrees. ### Claim 38 (depends on 27) The lens device of claim 27, wherein the asymmetric curvilinear contour of the light output surface has an inflection point between the convex region and the concave region. ### Claim 39 (depends on 27) The lens device of claim 27, wherein the light output surface extends for a distance in directions along the lateral axis from the first end to the second end, and wherein the inflection point is on the light output surface at a location being at within a range of between about 40% and about 60% along the distance extending from the first end to the second end. ### Claim 40 (depends on 27) The lens device of claim 27, being configured for emitting light as being distributed on a planar surface. ### Claim 41 (depends on 40) The lens device of claim 40, being configured for causing a luminance of light reflected by the planar surface to have a ratio of maximum luminance divided by minimum luminance being about 4 or less. ### Claim 42 (depends on 40) The lens device of claim 40, being configured for causing a luminance of light reflected by the planar surface to have a ratio of maximum luminance divided by minimum luminance being within a range of between about 4.0 and about 1.8. ### Claim 43 (depends on 40) The lens device of claim 40, being configured for causing a luminance of light reflected by the planar surface to have a ratio of average luminance divided by minimum luminance being about 2 or less. ### Claim 44 (depends on 40) The lens device of claim 40, being configured for causing a luminance of light reflected by the planar surface to have a ratio of average luminance divided by minimum luminance being within a range of between about 2.1 and about 1.2.