Abstract: Disclosed is a light assembly including a rotation ring including upper and lower surfaces, a mounting ring secured to a light pan and including upper and lower surfaces positioned over a portion of the rotation ring such that the portion of the rotation ring is sandwiched between the light pan and the mounting ring and such that the rotation ring is rotatable relative to the mounting ring, a light engine mounted on the rotation ring, and an adjustable rotation limiting mechanism that includes (a) a rotation stop platform provided on the mounting ring, the rotation stop platform including a moveable stop and (b) a rotation stop unit provided on the rotation ring, the rotation stop unit including a rotation stop arm. The rotation stop arm rotates with the rotation ring and contacts the moveable stop to prevent further rotation of the rotation ring with respect to the mounting ring.

Abstract: A light engine that includes light emitting diodes mounted on a printed circuit board, which in turn is attached to a heat sink. An optic assembly is positioned over the printed circuit board to direct the emitted light as desired. The light engine can be positioned. within the ceiling within the opening of a mounting frame. In some embodiments, the light engine is retained on the mounting frame such that it can be moved clear of the mounting frame opening.

Abstract: Retrofit light fixtures suitable for installation without tools. One or more spring bands deform as the fixture is forced through a ceiling opening and resume their preloaded shape to hold the fixture in place. Some embodiments may be installed in round ceiling openings and may utilize LED light sources.

Abstract: A system includes a relay, an actuation circuit, and an actuation delay circuit. The relay is coupled to a source of an input voltage or current waveform. The relay includes an actuation coil. The actuation circuit detects a peak or valley of a rectified voltage ripple waveform. The rectified voltage ripple waveform is generated from the input voltage or current waveform. The actuation circuit also causes an actuation voltage to be provided to the actuation coil. The actuation delay circuit delays the actuation circuit from providing the actuation voltage. The actuation delay circuit is configured based on the peak or valley of the rectified voltage ripple waveform. The actuation delay generated by the actuation delay circuit causes the relay to begin allowing current to flow to a load device at a time coincident with a zero-crossing time value of the input voltage or current waveform.

Abstract: An optical system and method provides at least one, and preferably an array of relatively small, high brightness light sources with a surrounding surface that exhibits brightness, thereby reducing the contrast between the high brightness produced by the light sources and the brightness of their surrounding surfaces. The optical system includes a light waveguide structure that captures a portion of the light from the individual high-brightness light sources, and then re-emits the source light to create brightness in the light sources' surrounding surfaces. The optical system is particularly adapted for use with LEDs, but could be used with other high brightness light sources.

Abstract: To connect multiple LED devices, each LED device is placed in a holder. A first wire is connected to a first wire connection point on the holder and a second wire is connected to a second wire connection point on the holder. The first wire is also connected to a first wire connection point on a circuit board The second wire is also connected to a second wire connection point on the circuit board. A connector may be used to connect the wires to the wire connection points on the circuit board. The circuit board includes traces to connect the LED devices to each other or to other components.

Abstract: A composite light source includes at least eight illumination panels in a layout. Each of the illumination panels in the layout is adjacent at least one other of the illumination panels. All of the illumination panels emit light of the same chromaticity as one another. Each illumination panel emits light characterized by one of at least first, second, and third discrete levels of luminous intensity. At least one of the illumination panels emits light at the first level of luminous intensity; at least one of the illumination panels emits light at the second level of luminous intensity; and at least one of the illumination panels emits light at the third level of luminous intensity.

Abstract: A modular relay sub-assembly is provided. The modular relay sub-assembly can include a first housing portion, a second housing portion, a conductor having a first contact, and a split conductor. The second housing portion may be attached to a surface of the first housing portion. The conductor may be disposed inside a cavity formed by the two housing portions. The first contact may be accessible through a first opening in the first housing portion. The split conductor may include a first portion, a second portion, and a contact. The split conductor being disposed inside the cavity formed by the first and second housing portions. The second portion may be disposed at a position electrically isolated from the first portion. The contact of the split conductor can be accessible through a second opening in the first housing portion. The split conductor can be positioned to selectively contact the conductor.

Abstract: Embodiments of the invention include a luminaire that includes a plurality of different light engines. Light engines having different light distributions can be included in a single luminaire and a subset of the light engines selectively driven to dynamically change the light distribution of the luminaire. In this way, a single luminaire is capable of illuminating an area with a variety of different light distributions.

Abstract: Embodiments of the invention include a luminaire that includes a plurality of different light engines. Light engines having different light distributions can be included in a single luminaire and a subset of the light engines selectively driven to dynamically change the light distribution of the luminaire. In this way, a single luminaire is capable of illuminating an area with a variety of different light distributions.

Abstract: A lighting system for and method of commissioning LED light fixtures is disclosed. The LED light fixtures include a controller unit that is programmed with lighting firmware and an on-board light sensor that is responsive to visible light signals from a light source. In operation, the light sensor is irradiated visible light signals and/or visible light sequences that instruct the LED light fixture via the controller unit to join a group, be locked into a group, run lighting programs and/or become un-locked from a group.

Abstract: A mounting assembly for securing a luminaire to a light pole includes an adapter and a support bracket supporting a plurality of adapter wedges. The adapter includes an upper portion and a lower portion. The lower portion is tapered such that the diameter of the lower portion proximate the upper portion is greater than the diameter of the lower portion distal the upper portion. A plurality of adapter wedges are mounted to the mounting assembly, and have a first side facing outward from the mounting assembly and a tapered second side facing the lower portion of the adapter. A luminaire is attached to the adapter. The adapter and support bracket provides for installation in light poles having varying inside diameters.

Abstract: Silicone-containing light fixture optics. A method for manufacturing an optical component may include mixing two precursors of silicone, opening a first gate of an optic forming device, moving the silicone mixture from the extrusion machine into the optic forming device, cooling the silicone mixture as it enters the optic forming device, filling a mold within the optic forming device with the silicone mixture, closing the first gate, and heating the silicone mixture in the mold to at least partially cure the silicone. Alternatively, a method for manufacturing an optical component may include depositing a layer of heat cured silicone optical material to an optical structure, arranging one or more at least partially cured silicone optics on the layer of heat cured silicone optical material, and heating the heat cured silicone optical material to permanently adhere the one or more at least partially cured silicone optics to the optical structure.

Abstract: A composite light source includes a plurality of illumination panels, that emit light of a fixed color and a variable luminous intensity. Over time, the luminous intensities of at least two of the illumination panels vary, while a combined luminous intensity of the illumination panels remains about constant. Another composite light source includes a plurality of illumination panels that emit light. Each illumination panel of at least a first subset of the plurality of illumination panels emits the light with a first luminous intensity, and each illumination panel of at least a second subset of the plurality of illumination panels emits the light with a second luminous intensity that is different from the first luminous intensity.