# US 8,465,190 B2 · Total internal reflective (TIR) optic light assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,190 B2 - Document ID: US8465190B2 - Status: Granted - Kind: B2 - Application number: 12/768,334 - Filed: 2010-04-27 - Published: 2010-11-25 - Granted: 2013-06-18 - Earliest claimed: 2009-05-22 - Assignees: Sylvan R. Shemitz Designs, Inc. - Applicants: Nikhil Taskar; Paul Ford; David R. Pfund - Inventors: Nikhil Taskar; Paul Ford; David R. Pfund - Web page: https://patentgrep.com/patent/US8465190B2 ## CPC - F21V 7/0091: {using total internal reflection} - F21V 5/04: of lens shape - G02B 19/0028: {refractive and reflective surfaces, e.g. non-imaging catadioptric systems} - G02B 19/0066: {in the form of an LED array} - F21Y 2103/00: Elongate light sources, e.g. fluorescent tubes - F21Y 2115/20: Electroluminescent [EL] light sources - 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 - 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 total internal reflective (TIR) optic light bar includes a body having a first end portion that extends to a second end portion through an elongated intermediate portion. The body includes a light input surface having a curvilinear profile, a total internal reflective (TIR) surface, and at least one light output surface. The light input surface, TIR surface, and at least one light output surface defining a continuous outer surface of the body. ## Claims ### Claim 1 A total internal reflective (TIR) optic light bar comprising: a body including a first end portion that extends to a second end portion through an elongated intermediate portion, the body including a light input surface having a curvilinear profile, a total internal reflective (TIR) surface, and at least one light output surface, the light input surface, TIR surface, and at least one light output surface defining a continuous outer surface of the body, wherein the elongated intermediate portion, the light input surface, the TIR surface, and the at least one light output surface, each terminate on one side of the first end portion of the body and on a second side at the second end portion of the body. ### Claim 2 A total internal reflective (TIR) optic light bar comprising: a body including a first end portion that extends to a second end portion through an elongated intermediate portion, the body including a light input surface, a total internal reflective (TIR) surface, and at least one light output surface, the light input surface, TIR surface, and at least one light output surface defining a continuous outer surface of the body, wherein the elongated intermediate portion, the light input surface, the TIR surface, and the at least one light output surface, each terminate on one side of the first end portion of the body and on a second side at the second end portion of the body. ### Claim 3 (depends on 2) The TIR optic light bar according to claim 2, wherein the TIR surface and the at least one light output surface are arranged at a non-perpendicular angle relative to the light input surface. ### Claim 4 (depends on 2) The TIR optic light bar according to claim 2, wherein the at least one light output surface is a multi-faceted light output surface. ### Claim 5 (depends on 4) The TIR optic light bar according to claim 4, wherein the multifaceted light output surface includes a plurality of refractive facets. ### Claim 6 (depends on 4) The TIR optic light bar according to claim 4, wherein the multifaceted light output surface defines a curvilinear profile. ### Claim 7 (depends on 4) The TIR optic light bar according to claim 4, wherein multifaceted light output surface includes a first multifaceted light output surface configured to direct light in a first direction and a second multifaceted light output surface configured to direct light in a second direction. ### Claim 8 (depends on 2) The TIR optic light bar according to claim 2, further comprising: at least one light emitting diode (LED) positioned adjacent the light input surface. ### Claim 9 (depends on 8) The TIR optic light bar according to claim 8, wherein the at least one LED comprises a plurality of LEDs positioned adjacent the light input surface. ### Claim 10 (depends on 2) The TIR optic light bar according to claim 2, wherein the light input surface extends, uninterrupted, between the first end portion and the second end portion of the body. ### Claim 11 (depends on 2) The TIR optic light bar according to claim 2, wherein the elongated intermediate portion extends linearly along a longitudinal axis. ### Claim 12 A total internal reflective (TIR) optic light bar comprising: a body including a first end portion that extends to a second end portion through an elongated intermediate portion defining an axial dimension of the body, the body including a light input surface having a curvilinear profile, at least one total internal reflective (TIR) surface, and at least one light output surface, wherein each of the elongated intermediate portion, the light input surface, the at least one TIR surface, and the at least one light output surface have a dimension substantially similar to the axial dimension. of the body and on a second side at the second end portion of the body. ### Claim 13 (depends on 12) The TIR optic light bar according to claim 12, wherein the light input surface extends continuously between the first end portion and the second end portion. ### Claim 14 (depends on 13) The TIR optic light bar according to claim 13, wherein the light input surface extends continuously and uninterrupted between the first end portion and the second end portion. ### Claim 15 (depends on 13) The TIR optic light bar according to claim 13, further comprising: a plurality of light members positioned adjacent the light input surface, the plurality of light members emitting light into the body. ### Claim 16 (depends on 15) The TIR optic light bar according to claim 15, wherein the light input surface includes a channel that extends longitudinally between the first end portion and the second end portion. ### Claim 17 (depends on 16) The TIR optic light bar according to claim 16, wherein the plurality of light members are positioned in the channel, each of the light members emitting light into the body through the light input surface. ### Claim 18 (depends on 12) The TIR optic light bar according to claim 12, wherein the light input surface comprises a non-light modifying surface, the non-light modifying surface passing light into the body without imparting any refraction. ### Claim 19 (depends on 12) The TIR optic light bar according to claim 12, wherein the at least one light output surface is a multi-faceted light output surface including a plurality of refractive facets. ### Claim 20 (depends on 19) The TIR optic light bar according to claim 19, wherein each of the plurality of refractive facets are substantially tangent to adjacent ones of the plurality of refractive facets thereby defining a curvilinear profile. ### Claim 21 (depends on 19) The TIR optic light bar according to claim 19, wherein the multi-faceted light output surface includes a first multi-faceted light output surface configured to direct light in a first direction and a second multi-faceted light output surface configured to direct light in a second direction. ### Claim 22 (depends on 12) The TIR optic light bar according to claim 12, wherein the elongated intermediate portion extends linearly along a longitudinal axis. ### Claim 23 A method of illuminating an object, the method comprising: emitting light from at least one light member; directing the light into a curvilinear light input surface of a total internal reflective (TIR) optic light bar including a body having an elongated intermediate portion that extends from a first end portion and terminates at a second end portion; re-directing the light with a TIR surface that extends from the first end portion and terminates at the second end portion; and passing the light from the at least one TIR surface through a plurality of light output surfaces that extend from the first end portion and terminate at the second end portion to establish a beam of light that is directed onto an object to be illuminated. ### Claim 24 (depends on 23) The method of claim 23, wherein establishing the beam of light includes guiding the beam of light asymmetrically onto a wall while minimizing light washing onto adjacent surfaces. ### Claim 25 (depends on 23) The method of claim 23, further comprising: passing the light through a first plurality of light output surfaces and establishing a first beam of light aimed in a first direction; and passing the light through a second plurality of light output surfaces and establishing a second beam of light aimed in a second direction, the first direction being distinct from the second direction. ### Claim 26 (depends on 25) The method of claim 25, wherein said establishing the first beam of light in the first direction includes guiding the first beam of light asymmetrically onto a first wall while minimizing light washing onto adjacent surfaces. ### Claim 27 (depends on 26) The method of claim 26, wherein said establishing the second beam of light in the second direction includes guiding the second beam of light asymmetrically onto a second, opposing wall while minimizing light washing onto other adjacent surfaces. ### Claim 28 (depends on 23) The method of claim 23, wherein emitting light from at least one light member comprises emitting light from a plurality of LED's arranged adjacent to the curvilinear light input surface. ### Claim 29 (depends on 12) The TIR optic light bar according to claim 12. wherein the axial dimension is substantially linear. ### Claim 30 (depends on 12) The TIR optic light bar according to claim 12, wherein the axial dimension is curvilinear.