Abstract: A lighting fixture including a light source including an array of light emitting diodes (LEDs) and a reflector including a input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end. The reflector further includes a first, a second, a third, and a fourth sidewall that extend from the input end to the output end. The first and the second sidewalls each include an interior surface, the third and the fourth sidewalls each include an interior surface having a reflectivity that is more diffuse than the interior surfaces of the first and second sidewalls. A lens is adjacent the output end of the reflector.

Abstract: A lighting fixture including a light source having an array of light emitting diodes (LEDs); a reflector having an input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end; and a tandem lens array adjacent the output end of the reflector. The tandem lens array includes a first side that faces toward the array of LEDs and a second side that is opposite the first side, wherein the first side includes an array of lenses and the second side includes an array of lenses.

Abstract: A lighting fixture including a light source having an array of light emitting diodes (LEDs); a reflector having an input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end; and a tandem lens array adjacent the output end of the reflector. The tandem lens array includes a first side that faces toward the array of LEDs and a second side that is opposite the first side, wherein the first side includes an array of lenses and the second side includes an array of lenses.

Abstract: A lighting fixture including a light source including an array of light emitting diodes (LEDs) and a reflector including a input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end. The reflector further includes a first, a second, a third, and a fourth sidewall that extend from the input end to the output end. The first and the second sidewalls each include an interior surface, the third and the fourth sidewalls each include an interior surface having a reflectivity that is more diffuse than the interior surfaces of the first and second sidewalls. A lens is adjacent the output end of the reflector.

Abstract: A lighting fixture including a light source including an array of light emitting diodes (LEDs) and a reflector including a input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end. The reflector further includes a first, a second, a third, and a fourth sidewall that extend from the input end to the output end. The first and the second sidewalls each include an interior surface, the third and the fourth sidewalls each include an interior surface having a reflectivity that is more diffuse than the interior surfaces of the first and second sidewalls. A lens is adjacent the output end of the reflector.

Abstract: Methods, luminaires and systems for matching a composite light spectrum to a target light spectrum are disclosed. Method embodiments may be optimized for simultaneously maximizing luminous output with minimal chromaticity error. Method embodiments may further be optimized for simultaneously minimizing both chromaticity and spectral error. Embodiments of the present invention may be used with composite light sources having four or more distinct dominant colors within the visible spectrum.

Abstract: A lighting fixture comprising a light source including an array of LEDs, a plurality of collimating optics, and a light-mixing assembly comprising a reflective tube having a converging section and a diverging section. The array comprises LEDs have a plurality of colors, such as at least one white LED and at least one amber LED positioned on a perimeter of the array. The reflective tube preferably includes a necked portion between the converging section and the diverging section. For example, a sidewall of the reflective tube can be longitudinally curved (e.g., in the shape of an asphere or a parabola). In one embodiment, a shape of the sidewall of the reflective tube can be adjustable to modify the light wash exiting the light-mixing assembly.

Abstract: Methods, luminaires and systems for matching a composite light spectrum to a target light spectrum are disclosed. Method embodiments may be optimized for simultaneously maximizing luminous output with minimal chromaticity error. Method embodiments may further be optimized for simultaneously minimizing both chromaticity and spectral error. Embodiments of the present invention may be used with composite light sources having four or more distinct dominant colors within the visible spectrum.