An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

A lighting device that provides visible illumination with enhanced emission in the range 460-520 nm with a M/P ratio of XI, where XI is at least 0.7, a correlated color temperature of 4000-14000 K, and an average color rendering index of at least 70.

An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.

An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

A filtering assembly for enhancing lighting from a luminaire serves as a lighting filter that includes one or more stackable and interchangeable filter devices. The filter devices are configured to detachably couple to a luminaire, and custom block a portion of the light transmitted from the luminaire. This enables a uniquely shaped transmission of light and/or removing unwanted spills and or glare emanating from the luminaire. The filter devices comprise a body that defines a clear section that allows full passage of light from the underlying luminaire, and an opaque section that allows partial or no passage of light. The filter devices also comprise an outer rim having a friction enhancing material that enables a snug engagement with the perimeter recess forming in the luminaire. The friction enhancing material of the outer rim restricts slippage when stacking multiple filter devices, and with the inside perimeter recess formed in the luminaire.

This invention relates to selectively-adjustable beam angle lamps, and in particular, selectively-adjustable beam angle LED lamps.

Disclosed is a light effect projection device, including a control unit, a condensing diffraction assembly and a first lamp source, wherein the first lamp source and the control unit are both fixed in a housing, the first lamp source is electrically connected to the control unit, the condensing diffraction assembly is located above the first lamp source, the condensing diffraction assembly at least includes a plastic condensing lens, the condensing lens is shaped like a spherical crown or a semi-sphere, an incident plane of the condensing lens is concave, and the incident plane or an emergent plane of the condensing lens is of a polyhedral structure; further including a driving unit which is fixedly arranged in the housing and electrically connected to the control unit, wherein one part of the condensing diffraction assembly is fixed at a power output end of the driving unit for driving connection.

A grow light for providing light to one or more plants in a grow area, includes a first light source and a second light source. A first energy conversion component is disposed over the first light source and a second energy conversion component is disposed over the second light source. A power supply is configured to provide power to the first and the second light sources. A controller is configured to control the power supply to provide power to either the first light source or the second light source at a given time. The first energy conversion component converts light received from the first light source into a light having first spectrum and the second energy conversion component converts light received from the second light source into a light having second spectrum different from the first spectrum.

A desktop USB device has power-wire(s) or storage-wire arrangement. The device has more than one separated distance away USB-Unit(s) by branch-wire(s) and have wire storage arrangement for at least one of an USB jump-wire, an AC power-wire, USB-charger wire or another charging related wire(s). The USB device and separated USB-Unit(s) to be installed on a desktop or floor at a hand-reachable distance from people, and install or attach anywhere by attachment so that there is no need for people to bend body or knee to get the USB-port(s) to charge i-phone or Tablet(s). The current invention use shortest #14 gauge AC wire for power strips and use long length of #18 gauge to supply DC power to USB ports built-in separated USB-unit(s) the charger. The USB-charger power-wire arrangement has by at least one main-wire and plurality of branch-wire(s) to connect with at least one of separated and distance away USB-Unit(s) incorporated with external USB-wire has at least 2 ends with male USB-plug to connect with each unit has at least one of female receiving USB-port(s) inside USB Unit(s), that can supply a desired output-current in the range of from 1.0 A to 50 A and at USB needed VDC by converting input AC power ranging from 110 VAC to 250 VAC. The USB device or power station may also optional to incorporate with at least one additional device such as at least one of (i) AC outlet, (2) sensor(s), (3) motion sensor, (4) remote controller, (5) time display, (6) LEDs, (7) IC, (8) 2nd LED(s) (9) Detecor for charging status and system, (10) power fail device, (11) diffusor equipment, (12) color changing, color selection, function selection for LED(s) light illumination. (13) other lights, (14) a power fail device, (15) a smell device, an (16) audio device, a video device.

An LED and/or laser light for night time or dark area use, such as a plug-in wall outlet night light or direct current (DC) operated desktop light, includes projection or pin-hole image features to project or present an image, message, data, logo, or time on a ceiling, walls, floor, or other desired surface, or an cover surface, inner housing wall. The optics piece surround light source including an optics-lens, slide, openings, cut-outs, film, grating, or holographic element to create an image at a desired location. The night light may have an adjustable angle or distance between light source and optics piece, as well as other adjustable position, location, or orientation features.