Abstract: The present disclosure is directed to in grade light fixtures and recessed luminaires and subassemblies thereof, including, for example, a heat sink and pivot for a recessed luminaire, a gasket for the recessed luminaire, and an outer box and cover for installation of the recessed luminaire. The recessed luminaire comprises: a housing having an internal surface; and a light subassembly engaged with a thermally conductive body, the light subassembly having a first end and a second end, wherein the first end of the light subassembly is pivotally secured to a pivot arranged on, in, or proximate to the internal surface of the housing. The thermally conductive body is in thermal contact with the internal surface of the housing. The recessed luminaire further comprises a dehumidifier.

Abstract: A color mixing lens assembly is provided. The color mixing assembly may include a center mixing structure arranged concentrically within the optic. The center mixing structure may be configured to receive a first portion of electromagnetic radiation from a light receiving structure. The center mixing structure may include a plated surface. The center mixing structure may include a center kick structure arranged concentrically within the center mixing structure. The center kick structure may be configured to reflect the first portion of the electromagnetic radiation towards the plated surface. The center mixing structure may be configured to reflect the first portion of the electromagnetic radiation from the plated surface through an exit surface of the optic. The optic may be configured to reflect a second portion of the electromagnetic radiation received from the light source structure through the exit surface of the optic.

Abstract: The present disclosure is directed to in grade light fixtures and recessed luminaires and subassemblies thereof, including, for example, a heat sink (10) and pivot (16) for a recessed luminaire (2), a gasket (100) for the recessed luminaire (2), and an outer box (70) and cover (4) for installation of the recessed luminaire (2). The recessed luminaire (2) comprises: a housing (6) having an internal surface (18); and a light subassembly (8) engaged with a thermally conductive body (10), the light subassembly (8) having a first end (53) and a second end (54), wherein the first end (53) of the light subassembly (8) is pivotally secured to a pivot (16) arranged on, in, or proximate to the internal surface (18) of the housing (6). The thermally conductive body (10) is in thermal contact with the internal surface (18) of the housing (5). The recessed luminaire (2) further comprises a dehumidifier (90).

Abstract: A color mixing lens assembly is provided. The color mixing assembly may include a center mixing structure arranged concentrically within the optic. The center mixing structure may be configured to receive a first portion of electromagnetic radiation from a light receiving structure. The center mixing structure may include a plated surface. The center mixing structure may include a center kick structure arranged concentrically within the center mixing structure. The center kick structure may be configured to reflect the first portion of the electromagnetic radiation towards the plated surface. The center mixing structure may be configured to reflect the first portion of the electromagnetic radiation from the plated surface through an exit surface of the optic. The optic may be configured to reflect a second portion of the electromagnetic radiation received from the light source structure through the exit surface of the optic.

Abstract: A color mixing lens assembly is provided. The color mixing lens assembly may include an optic arranged about a light source and a ring reflector. The ring reflector may be arranged within the optic. In this configuration, the ring reflector is configured to reflect the first portion towards a surface of the optic. The optic may be configured to reflect the first portion through an exit plane of the optic, and to reflect a second portion of the electromagnetic radiation through the exit plane. Alternatively, the ring reflector may be arranged around the optic. The optic may further include a kick surface configured to reflect the first portion of the electromagnetic radiation toward the ring reflector. The ring reflector may be configured to reflect the first portion through an exit plane of the optic. The optic may be configured to reflect a second portion of the electromagnetic radiation through the exit plane.

Abstract: The present disclosure is directed to in grade light fixtures and recessed luminaires and subassemblies thereof, including, for example, a heat sink (10) and pivot (16) for a recessed luminaire (2), a gasket (100) for the recessed luminaire (2), and an outer box (70) and cover (4) for installation of the recessed luminaire (2). The recessed luminaire (2) comprises: a housing (6) having an internal surface (18); and a light subassembly (8) engaged with a thermally conductive body (10), the light subassembly (8) having a first end (53) and a second end (54), wherein the first end (53) of the light subassembly (8) is pivotally secured to a pivot (16) arranged on, in, or proximate to the internal surface (18) of the housing (6). The thermally conductive body (10) is in thermal contact with the internal surface (18) of the housing (5). The recessed luminaire (2) further comprises a dehumidifier (90).

Abstract: A lighting unit (10) configured to illuminate a surface (32) having a proximal portion (34) and a distal portion (36) in relation to the lighting unit. The lighting unit includes a light source (12) configured to emit a light beam (28), and an optic (40) positioned between the light source and the surface to modify the emitted light beam to have a largely uniform vertical illumination distribution along the surface. The input surface (39) of the optic faces the light source and has a convex lens portion (41) that directs a portion of the emitted light beam at the distal portion of the surface, and a concave lens portion (43) that directs a portion of the emitted light beam at the proximal portion of the surface.

Abstract: Disclosed is a lighting system (10) that illuminates a surface (16) with a uniform illumination pattern (12). The lighting system includes a plurality of lighting units (14) that each emit a light beam that has a variable vertical illumination distribution and a variable horizontal illumination distribution. The intensity of each light beam is uniform in a central region of the horizontal illumination distribution, and non-uniform at each end of the horizontal illumination distribution. Similarly, the intensity of each light beam is uniform in a central region of the vertical illumination distribution, and largely non-uniform at each end of the vertical illumination distribution. The light beams overlap in the region of horizontal nonuniformity in order to create an illumination pattern that appears uniform.

Abstract: A lighting unit (10) configured to illuminate a surface (32) having a proximal portion (34) and a distal portion (36) in relation to the lighting unit. The lighting unit includes a light source (12) configured to emit a light beam (28), and an optic (40) positioned between the light source and the surface to modify the emitted light beam to have a largely uniform vertical illumination distribution along the surface. The input surface (39) of the optic faces the light source and has a convex lens portion (41) that directs a portion of the emitted light beam at the distal portion of the surface, and a concave lens portion (43) that directs a portion of the emitted light beam at the proximal portion of the surface.

Abstract: A method (1000) for far field illumination using modified optical elements that normalize the angular distribution of light of different colors. A lighting unit (400) includes a plurality of light sources (410) emitting light of different colors, where each of the light sources is associated with a respective optical element (470, 480, 490). Each optical element is optimized to modify the angular distribution of light emitted from the light source such that the angular distribution of each of the light sources in the far field is substantially similar.

Abstract: Methods and apparatus are provided for producing mixed light in a direct-view luminaire. The luminaire includes a plurality of light sources (132) that, in combination, are configured to generate a plurality of different colors of light, a first light mixing chamber (110) and at least one second light mixing chamber (120) in light communication with the first mixing chamber through at least one opening (134). At least one directly viewable light exit surface (112) is coupled to the first light mixing chamber. The light sources are contained in the second light mixing chamber(s), which is configured to prevent light emitted from the light sources from directly impinging on the light exit surface(s). The first light mixing chamber and the light exit surface(s) are configured to mix the light emitted from the light sources such that all light exiting the light exit surface(s) is substantially uniform in brightness and color.

Abstract: Disclosed is a lighting system (10) that illuminates a surface (16) with a uniform illumination pattern (12). The lighting system includes a plurality of lighting units (14) that each emit a light beam that has a variable vertical illumination distribution and a variable horizontal illumination distribution. The intensity of each light beam is uniform in a central region of the horizontal illumination distribution, and non-uniform at each end of the horizontal illumination distribution. Similarly, the intensity of each light beam is uniform in a central region of the vertical illumination distribution, and largely non-uniform at each end of the vertical illumination distribution. The light beams overlap in the region of horizontal nonuniformity in order to create an illumination pattern that appears uniform.

Abstract: Methods and apparatus related to an LED-based lighting unit (10, 110) having an optical component for mixing light output from a plurality of LEDs (34, 134). In some embodiments the optical component may include at least one reflective surface interiorly thereof and the LEDs (34, 134) may be vertically arranged about the reflective surface. At least some of the LEDs (34, 34) may generate a light output generally directed toward the reflective surface. The reflective surface may be configured to direct at least some of the light output directly incident thereon through a light output opening (25, 125) of the optical component.

Abstract: Methods and apparatus related to a textured lens (30, 130). The textured lens includes a textured portion (40, 140) having plurality of unique textures. The lens may be utilized in a LED-based lighting fixture (10, 110) to, for example, reduce the presence of color banding and/or color shadows present in the light output of the lighting fixture. The textured portion may extend across all or portions of the lens surface.

Abstract: Disclosed is an LED-based luminaire (10, 110, 210, 310, 410, 510, 610, 710) including an optic surrounding a plurality of LEDs (140, 240, 340, 440, 540, 640a/b, 740). The optic may include a plurality of interior reflective surfaces for mixing light output of the LEDs and also include a transmissive diffuser (30, 130, 230, 330, 430, 530, 630a/b, 730a/b) through which interiorly reflected light output of the LEDs exits the LED-based luminaire.

Abstract: Disclosed is an LED-based luminaire (10, 110, 210, 310, 410, 510, 610, 710) including an optic surrounding a plurality of LEDs (140, 240, 340, 440, 540, 640a/b, 740). The optic may include a plurality of interior reflective surfaces for mixing light output of the LEDs and also include a transmissive diffuser (30, 130, 230, 330, 430, 530, 630a/b, 730a/b) through which interiorly reflected light output of the LEDs exits the LED-based luminaire.

Abstract: Methods and apparatus are provided for producing mixed light in a direct-view luminaire. The luminaire includes a plurality of light sources (132) that, in combination, are configured to generate a plurality of different colors of light, a first light mixing chamber (110) and at least one second light mixing chamber (120) in light communication with the first mixing chamber through at least one opening (134). At least one directly viewable light exit surface (112) is coupled to the first light mixing chamber. The light sources are contained in the second light mixing chamber(s), which is configured to prevent light emitted from the light sources from directly impinging on the light exit surface(s). The first light mixing chamber and the light exit surface(s) are configured to mix the light emitted from the light sources such that all light exiting the light exit surface(s) is substantially uniform in brightness and color.

Abstract: Methods and apparatus related to an LED-based lighting unit (10, 110) having an optical component for mixing light output from a plurality of LEDs (34, 134). In some embodiments the optical component may include at least one reflective surface interiorly thereof and the LEDs (34, 134) may be vertically arranged about the reflective surface. At least some of the LEDs (34, 34) may generate a light output generally directed toward the reflective surface. The reflective surface may be configured to direct at least some of the light output directly incident thereon through a light output opening (25, 125) of the optical component.

Abstract: Methods and apparatus related to a textured lens (30, 130). The textured lens includes a textured portion (40, 140) having plurality of unique textures. The lens may be utilized in a LED-based lighting fixture (10, 110) to, for example, reduce the presence of color banding and/or color shadows present in the light output of the lighting fixture. The textured portion may extend across all or portions of the lens surface.

Abstract: The present disclosure is directed to inventive methods and apparatus for a low-glare LED-based lighting unit (110). The low-glare LED-based lighting unit (110) may have vertically extending LED support structure (120) and an array of individually aimed LEDs (133) coupled to the vertically extending LED support structure (120). At least one vertically extending translucent inner lens (150/260) may be provided adjacent a plurality of the LEDs (133) and intersect the LED light output axis (A) of a plurality of the LEDs (133).