An LED downlight assembly accommodates square and round trims and its components may be removed irrespective of the presence of mudded in round or square mud plates. The assembly also includes a collar that can be fitted to ceiling of varying thicknesses.

A ring flash light diffusion device includes a first converter ring configured to connect to a camera lens and a diffuser adapter. The diffuser adapter can be connected to a first end of the first converter ring. It also includes a flash ring connected to the diffuser adapter at a position along the length of the diffuser adapter and a ring flash connected to the flash ring. It further includes a light diffuser connected to the diffuser adapter such that light emitted from the ring flash passes through the light diffuser.

An illuminating bow roller assembly to facilitate loading a watercraft onto a trailer under dark conditions is disclosed. Example components of the assembly include a pair of end bells, a roller, and a yoke into one or more of which lighting elements are recessed into, and a fastening assembly to connect the components to form the assembly. Generally, the lighting elements are arranged such that light therefrom is emitted toward one or more of the end bells and roller. The end bells and roller are composed of a translucent material that propagates light emitted from the lighting elements, which extends illumination to areas surrounding the bow roller assembly in addition to the bow roller assembly itself. A water-activated switch can be implemented to control the illumination of the assembly such that the lighting elements only emit light when the trailer is contacting water.

The application relates to a lamp mounting structure and a lamp comprising the same. The lamp mounting structure includes: a mounting section, fixable to a fixed surface on which a power input line is provided; an engagement section, configured to be detachably connected with a lamp body of a lamp; and a wiring section, configured to realize electrical connection between the power input line and the lamp. The technical solution of the application achieves the technical effect that enabling a user to easily connect a ceiling lamp mechanically and electrically without any help.

A luminaire may include a light engine comprising a plurality of LEDs arranged in one or more annular rows. The luminaire may include an optic. The optic may include an annular optic body having a light entrance side facing the plurality of LEDs and a light exit side opposite the light entrance side. A plurality of annular grooves may be defined within the light exit side, the plurality of annular grooves being coaxial with the optic body. A plurality of arc-shaped grooves may be defined within the light exit side. Each of the plurality of arc-shaped grooves may be convex relative to a center of the optic. Each of the plurality of arc-shaped grooves may intersect at least one of the plurality of annular grooves. The optic may be configured to produce a Unified Glare Rating of less than 28.

A modular light for removably attaching to a bio-printer robot end effector, where the light includes: an annular modular light ring housing with an annular opening for receiving the end effector of the bioprinting robot; the housing substantially surrounding a dispensing tip of the end effector; a power supply interface to receive electrical power from the end effector; a plurality of LEDs positioned annularly around the end effector within the annular modular light ring housing, where the plurality of LEDs are spaced in at least two annular rows, where each of the at least two annular rows are at a unique elevational position within the annular modular light ring housing with respect to a light output plane of the annular modular light ring housing; the LEDs are in electrical communication with the power supply interface; and a controller communicatively coupled with the LEDs and the power supply interface.

The present disclosure relates generally to the technical field of lighting devices, and more particularly to a ceiling light and an adjustment method thereof. The ceiling light includes a mounting plate, a light-emitting member and an adjusting assembly. The light-emitting member is disposed on the mounting plate. The light-emitting member and the mounting plate are fixed in a circumferential direction. The adjusting assembly runs through the mounting plate and the light-emitting member. The mounting plate and the adjusting assembly are adjustable in a circumferential direction. The adjusting assembly includes an action member on an outer side thereof corresponding to the light-emitting member. The light-emitting member includes a responsive member corresponding to lighting parameters. When the mounting plate and the adjusting assembly relatively move in the circumferential direction, the action member cooperates with the responsive member to realize the regulation of the light-emitting member.

Systems and methods for monitoring, detecting, measuring, altering, optimizing, and/or modifying electrical power delivered to a power consuming device. The power consuming device can be a light, speakers, fans, motors, any household electronic appliance, or other power consuming device. Also disclosed are light assemblies including a first plurality of strings of red LED lights, a second plurality of strings of green LED lights, and a third plurality of strings of blue LED lights (e.g., SMD LEDs). The light assembly also includes a driver configured to intermittently supply power from a power source to the red LED lights, green LED lights, and blue LED lights. The light assembly also includes a housing to house the light assembly, the driver, the power source, and a controller.

A light source device includes plural light-emitting diodes arranged on a plane. A viewing angle of each of the light-emitting diodes is less than 50° or more than 80°.

A lighting unit (100) for a medical luminaire (150) has a number of groups of LEDs (110, 110′, 110″) that are connected to a common planar printed circuit board (115). Each LED (112, 112′) of at least one of the groups (110, 110′) is associated with a respective optic (122, 122′) by which a respective LED-optic pair (120, 120′) is formed. The respective optics, based on the structure (328), specify a tilt angle (125) of a central light beam axis (124, 124′) of an emitted light beam of the LED optics pair in a tilt direction (627) of the respective LED optics pair. The tilt direction is defined such that the respective light beam axes of the emitted light beams of the LED optics pairs from the at least one group of LEDs are at least partially skewed in pairs with respect to one another.