An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).

The present application discloses an organic light emitting diode assembly. The organic light emitting diode assembly includes a first base substrate; an organic light emitting diode on the first base substrate; and a second base substrate on a side of, the organic light emitting diode distal to the first base substrate. The organic light emitting diode and the second base substrate are spaced apart from each other by a tunable gap. A gap distance of the tunable gap is tunable such that a color of light emitted from the organic light emitting diode assembly is tunable in response to a change in the gap distance.

A customizable light-up device is disclosed herein. Such a device may include a motorized assembly that is configured to rotate about an axis, where the motorized assembly includes at least one LED; an object affixed to the motorized assembly, where the object is configured to rotate about the axis with the motorized assembly and configured to radiate or transmit light; a plurality of extension elements, where each of the plurality of extension elements is configured to transmit light; where the motorized assembly and the object each include one or more release coupling mechanisms configured to make an electrical connection and of receiving a first end of one of the plurality of extension elements; a power source configured to connect to the motorized assembly and the object; and a user-actuated control operable to adjust power provided by the power source.

A color temperature compensation system comprises a light source, a dimming element for dimming the light source, a color temperature compensation sheet for performing color temperature compensation on light output from the dimming element, in which there are different changes of color value on the color temperature compensation sheet, and a driving mechanism for controlling the movement of the color temperature compensation sheet and driving the color temperature compensation sheet to switch in and switch out of a light path.

A helicopter search light comprises a housing with a mounting portion, which is configured to be mounted to a helicopter, a light source support arranged within the housing and at least one optical system. Each optical system includes a group of at least two light sources with different light emission characteristics, which are arranged on the light source support; and a reflector, which is movable between at least two discrete positions, each position being associated with one of the at least two light sources, with the reflector in each position only reflecting light emitted by the associated light source. The helicopter search light further comprises at least one actuator, which is configured for selectively moving the reflector between the at least two discrete positions.

A flickering source of illumination is disclosed. A first, second and third group of LEDs and a control circuit are also disclosed. The control circuit is adapted to control a switch to selectively switch on the first group, the second group, and the third group of LEDs. The flickering source of illumination includes a translucent mineral positioned around the groups of LEDs. The translucent mineral is adapted to allow light emitted by the LEDs to pass through the translucent mineral and illuminate an area adjacent to the translucent mineral. The flickering source of illumination may include a first group of LEDs; a second group of LEDs; and a control circuit. The control circuit may be adapted to control a light output of the first and second groups of LEDs so that the first group of LEDs emits a different color of light than the second group of LEDs. The control circuit may be further adapted to selectively vary a color of the light output of the first group of LEDs and of the second group of LEDs. A translucent mineral positioned around the LEDs is also disclosed. The translucent mineral may be adapted to allow light emitted by the LEDs to pass through the translucent mineral and illuminate an area adjacent to the translucent mineral. The translucent mineral may be selected from a group including a salt rock, quartz, marble and natural stone.

A filter assembly with a color filter pair for a light fixture comprising two color filters is provided, where the color filters are linear moveable relatively to each other in parallel planes by at least one actuator. Each of the colors filters comprise a color filtering region formed as a comb-like structure comprising plurality of elongated teeth where the elongated teeth of the color filters are angled in relation to the direction of movement of the color filters. Further, the angle between the elongated teeth of the same color filter is less than 10 degrees and the elongated teeth of the two color filters are non-parallel in relation to each other. A light fixture comprising a plurality of such color filter pairs is also described.

An apparatus for a theatrical lighting instrument including a light source, which emits light in a light path; a lens located in the light path, and which receives light from the light source and projects light from the light source; a computer memory; and a computer processor. The apparatus may also include first pluralities and second pluralities of cyan, magenta and yellow color filters, each filter including a variable density color filter operated upon by a motor configured to traverse each filter in and out of the light path. Each variable density color filter of the first pluralities of filters may include a high saturation color pallet. Each variable density color filter of the second pluralities of filters may include a low saturation color pallet. The computer memory may include software to multiplex the traversing of the first and the second pluralities of filters to one or more control channels.

A laser projection device has at least one laser light source and a plurality of gratings, each grating having a light receiving side and a light emitting side. The plurality of gratings are arranged in a ring-shape having at least one row with the light receiving side of each grating facing a center of the ring. The laser projection device also has a motor configured to rotate the plurality of gratings about a rotational axis passing through the center of the ring. The plurality of gratings each comprise a pattern for forming an image when light is passed through the pattern. The plurality of gratings are arranged around the ring such that the plurality of patterns are configured to project an animated image when the plurality of gratings sequentially receive light from the at least one laser light source upon rotation of the grating set.

A lighting device (100) for illuminating a surface (110). The lighting device comprises at least one first light source (120) configured to emit a first light beam (140) in a first direction and at least one second light source (130) configured to emit a second light beam (150) in a second direction that is not parallel to the first direction. The first light beam (140) has a first spectral power distribution, the second light beam (150) has a second spectral power distribution and the second spectral power distribution is different from the first spectral power distribution. The lighting device further comprises at least one light-delimiting element (160) adjustable relative to at least one of the at least one first light source and the at least one second light source. The at least one light-delimiting element is further configured to delimit the first light beam and the second light beam thereby modify an area of overlap on the surface (110) of the first light beam (140) and the second light beam (150) by forming a boundary of the light (170) separating the first light beam and the second light beam, such that the first light source is configured to illuminate at least a first region (180) of the surface, and the second light source is configured to illuminate at least a second region (190) of the surface adjoining the at least one first region of the surface.