The present invention provides an optical element rotating device, which is simple in structure and convenient in use, and can prevent the stuck phenomenon of the rotating motion of the optical element main body from affecting the using effect of the stage light, comprising a base body, a ball holder, a ball, a ball pressing plate, an elastic element, and a cover, wherein the ball holder is sleeved outside the periphery of the base body; and the ball, the ball pressing plate, the elastic element and the cover are sequentially positioned between the ball holder and the base body from bottom to top. A stage light optical device is also disclosed, comprising an optical element main body and the rotating device, wherein the optical element main body is positioned on the base body of the rotating device.

An optical member includes a curved portion comprising an optically transmissive material. The enclosure has an outer surface and an inner surface opposite the outer surface. At least one light redirection feature protrudes from the inner surface. At least one indentation defined on the outer surface is configured to refract light.

A system for lighting a volleyball court has four corner light assemblies, two side center light assemblies, and four mid-court light assemblies. Each corner light assembly has an upper light fixture adapted to emit light outward and downward at a level generally below a player's eye level and a lower light element mounted in a manner to emit light outwards and upwards. Each side center light assembly has two lower light fixtures adapted to emit light outward and downward at a level generally below a player's eye level and an upper light assembly adapted to emit light outwards and upwards at a level generally above a player's eye level. Each mid-court light assembly has a light fixture adapted to emit light outward and downward at a level generally below a player's eye level. By ensuring that no light is emitted at a player's eye level, glare is significantly reduced.

A system for lighting a volleyball court has four corner light assemblies, two side center light assemblies, and four mid-court light assemblies. Each corner light assembly has an upper light fixture adapted to emit light outward and downward at a level generally below a player's eye level and a lower light element mounted in a manner to emit light outwards and upwards. Each side center light assembly has two lower light fixtures adapted to emit light outward and downward at a level generally below a player's eye level and an upper light assembly adapted to emit light outwards and upwards at a level generally above a player's eye level. Each mid-court light assembly has a light fixture adapted to emit light outward and downward at a level generally below a player's eye level. By ensuring that no light is emitted at a player's eye level, glare is significantly reduced.

An elongated lighting module having an asymmetric illumination source formed from at least two rows of light emitting diodes (LEDs) that extend along the long axis of the module and are independently controllable. The illumination source is rectangular and oriented so that the rows of LEDs extend along the long axis of the module. The module has couplings at each end that allow additional modules to be interconnected therewith using a linking member and a clamp. The lighting modules are powered via a wiring harness that extends down a support pole to a power converter stack having LED drivers to control the modules.

An elongated lighting module having an asymmetric illumination source formed from at least two rows of light emitting diodes (LEDs) that extend along the long axis of the module and are independently controllable. The illumination source is rectangular and oriented so that the rows of LEDs extend along the long axis of the module. The module has couplings at each end that allow additional modules to be interconnected to each other and to a central mount, thereby avoiding the need for a support pole having cross-arms. The lighting modules are powered via a wiring harness that extends down a support pole to a power converter stack having LED drivers to control the modules.

A self-supporting luminaire housing that can additionally support additional housings mounted for mounting to a support pole without any cross arms. The housing has a mounting plate for an illumination source, a spine spaced apart from the mounting plate, triangular fins extending between the mounting plate and the spine, and a set of braces coupled to and extending from the mounting plate to the spine. The mounting plate is rectangular, and the spine extends longitudinally relative to the mounting plate. Some of the braces extend perpendicularly from the mounting plate, and some of the braces extend obliquely from the mounting plate to form a supporting truss with the spin and the mounting plate. The housing may be formed as an integral unit to improve thermal dissipation via two thermal pathways from the illumination source to the fins.

An elongated lighting module having an asymmetric illumination source formed from at least two rows of light emitting diodes (LEDs) that extend along the long axis of the module and are independently controllable. The illumination source is rectangular and oriented so that the rows of LEDs extend along the long axis of the module. The lighting modules are powered via a wiring harness that extends down a support pole to a power supply having LED drivers to control the power to the modules. The power supply is divided between a core enclosure housing the LED drivers and a master enclosure that commands and controls the core enclosure. Multiple core enclosures may be used to power multiple luminaires under the control of a single master enclosure.

An elongated lighting module having an asymmetric illumination source formed from at least two rows of light emitting diodes (LEDs) that extend along the long axis of the module and are independently controllable. The illumination source is rectangular and oriented so that the rows of LEDs extend along the long axis of the module. The module has couplings at each end that allow additional modules to be interconnected therewith using a linking member and a clamp. The lighting modules are powered via a wiring harness that extends down a support pole to a power converter stack having LED drivers to control the modules. The asymmetric illumination source may be driven to change the beam angle and cutoff of illumination by independently adjusting the rows of light emitting diodes of the lighting module.

An elongated lighting module having an asymmetric illumination source formed from at least two rows of light emitting diodes (LEDs) that extend along the long axis of the module and are independently controllable. The lighting modules are powered via a wiring harness that extends down a support pole to a power converter stack having LED drivers to control the modules. The power supply for lighting module includes a power enclosure having individual light emitting drivers for powering the rows of light emitting diodes that can adjust the power level to compensate for the loss of power from another of the light emitting drivers. The power supply may also include a backup that can be switched over to power the rows of light emitting diodes in the event of a failure.