Abstract: An optical system (200, 300, 400), including: at least one 2×2 LED array forming a node (204) consisting of four different color LEDs: LED1(G), LED2(R), LED3 (B), LED4(W) and at least one respective TIR light-directing housing forming an optic (202) having a base end (208) and a light-emitting end (210), in which the node is disposed in the base end. The optic is characterized by a shape having four different focal points (F1, F2, F3, F4), and each of the LED1, LED2, LED3, LED4 is disposed at a respective one of the focal points.

Abstract: An optical system (200, 300, 400), including: at least one 2×2 LED array forming a node (204) consisting of four different color LEDs: LED1(G), LED2(R), LED3 (B), LED4(W) and at least one respective TIR light-directing housing forming an optic (202) having a base end (208) and a light-emitting end (210), in which the node is disposed in the base end. The optic is characterized by a shape having four different focal points (F1, F2, F3, F4), and each of the LED1, LED2, LED3, LED4 is disposed at a respective one of the focal points.

Abstract: In various embodiments, an asymmetric optical lens (100) may include a proximal volume (102). The proximal volume may include a base surface (106) and an LED recess (108) shaped to receive light emitted by one or more LEDs (109) along a first central light output axis (112). The LED recess may guide the received light along a second central light output axis (110) that is at a first angle (?) relative to the first central light output axis. The asymmetric optical lens may also include a distal volume (104) that includes, opposite the base surface, a non-planar light emission surface (114). The distal volume may be shaped to guide light from the proximal portion through the light emission surface along a third central light output axis (116) that is at a second angle (?) to the first central light output axis. The second angle may be greater than the first.

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 are methods and apparatus related to an LED-based luminaire (10) that redirects substantially all light output from LEDs (40) thereof off of an interior reflective surface at least once prior to the light exiting the LED-based luminaire (10). In some embodiments, an LED-based luminaire (10) is provided that includes a housing having a light output opening (20), a reflective interior surface, a diffusing cover lens (30) across the light output opening (20), and a plurality of optics (50) that are configured to redirect light output from a plurality of LEDs (40) within the lighting fixture (10).

Abstract: Disclosed are methods and apparatus related to an LED-based luminaire (10) that redirects substantially all light output from LEDs (40) thereof off of an interior reflective surface at least once prior to the light exiting the LED-based luminaire (10). In some embodiments, an LED-based luminaire (10) is provided that includes a housing having a light output opening (20), a reflective interior surface, a diffusing cover lens (30) across the light output opening (20), and a plurality of optics (50) that are configured to redirect light output from a plurality of LEDs (40) within the lighting fixture (10).

Abstract: Methods and apparatus for an optical lens (10, 110) suitable to provide an asymmetric light output pattern when utilized in combination with at least one LED. The optical lens (10, 110) may include a revolved section (20, 120) having and an extruded section (40, 140) extending from the end of the revolved section (20, 120). One or more surface features may optionally be applied to portions of the outer surface of the optical lens (10, 110).

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: A system and method for exterior projection lighting of a vehicle include a generally ellipsoidal faceted reflector disposed on a rear side of a projection lens. First and second focal points of each facet define corresponding reflector focal regions. A semi-conducting light source positioned at an acute angle, such as a single light emitting diode (LED) without a primary optic, emits light toward the reflector from within the first reflector focal region. Reflected light passes through the projection lens to illuminate a desired beam pattern. A curved shade disposed between the projection lens and the light source has at least a portion of a top edge disposed within the second reflector focal region. The shade blocks a portion of reflected light from extending below the optical axis.