A lighting device is provided, a plurality of light sources are located within a housing of the lighting device. A sensor is also provided to determine an indication of the point of lowest potential energy and/or the point of highest kinetic energy. This sensor output is input to a controller that is configured to determine a change in the position or a movement of the point of lowest potential energy and/or the point of highest kinetic energy as the position of the lighting device changes based on the sensor output and to change a property of the light emitted by the plurality of light sources based on the change of position or a movement of the point of lowest potential energy and/or the point of highest kinetic energy.

Lighting devices, systems, and methods for selectively activating S cones and L+M cones in a human retina and for regulating the phase of circadian rhythm in a human subject.

A free-standing accessory stand that includes a ground support portion and an enclosure is provided. The enclosure is disposed about a central axis of the accessory stand. The upper surface faces away from the ground support. The accessory stand includes a retractable accessory support that has an outer surface projecting away from the enclosure in a first configuration. A mounting space is provided along the outer surface of the retractable accessory support above the upper surface of the enclosure. The outer surface is retracted in a second configuration.

A personalized lighting device includes a base, a first column, a second column, and a translucent colored panel. The first column includes a first end coupled to the base. The second column is spaced apart from the first column. The second column includes a first end coupled to the base. The translucent colored panel spans a space between the first column and the second column.

A lighting device having a light diffuser and a circuit with at least two lamps of different colors mounted to direct light through a part of the light diffuser. and connections for at least one rechargeable battery to power said circuit. The circuit includes a light sub-circuit to independently control delivery of power to each of said lamps so as to vary the intensity of light emitted over time to produce a continuous color changing cycle. A spike is provided for positioning said connections above a ground surface.

A light includes a housing with a top face, a bottom face, a first side face, a second side face, and a surface arranged adjacent to the bottom face. The light also includes a head pivotally coupled to the housing, with a diffuser and a plurality of LEDs configured to emit light through the diffuser. The light also includes a power source configured to provide power to the plurality of LEDs. The top face, the bottom face, the first side face, the second side face, and the surface are each configured to support the light, and the surface is oriented at an oblique angle with respect to the bottom face.

Alignment systems and devices are provided for controlling the alignment of an optical payload. In some embodiments, an optical positioning system is provided that includes a yoke supporting an optical payload. The yoke, which includes a plurality of articulated segments and associated pivot joints, is mechanically coupled to the optical payload, such that when the optical payload is oriented in a given direction, such as towards a distal target, the optical payload is rotatable about a distal pivot axis associated with a distal pivot joint of the yoke. The pivot joints of the yoke may be configured such that the rotation axis associated with a given pivot joint passes sufficiently close to a respective center of mass of a distalward portion of the optical alignment system beyond the given pivot joint, such that the position and orientation of the optical payload is maintained in the absence of external forces.

A light includes a housing with a top face, a bottom face, a first side face, a second side face, and a surface arranged adjacent to the bottom face. The light also includes a head pivotally coupled to the housing, with a diffuser and a plurality of LEDs configured to emit light through the diffuser. The light also includes a power source configured to provide power to the plurality of LEDs. The top face, the bottom face, the first side face, the second side face, and the surface are each configured to support the light, and the surface is oriented at an oblique angle with respect to the bottom face.

A free-standing accessory stand that includes a ground support portion and an enclosure is provided. The enclosure is disposed about a central axis of the accessory stand. The upper surface faces away from the ground support. The accessory stand includes a retractable accessory support that has an outer surface projecting away from the enclosure in a first configuration. A mounting space is provided along the outer surface of the retractable accessory support above the upper surface of the enclosure. The outer surface is retracted in a second configuration.

The utility model provides an ornamental lamp with a new structure, comprising a lamp body and a water pump, wherein the lamp body is provided with a cavity, liquid and ornamental objects are arranged in the cavity, a water inlet and a water outlet communicating with the cavity are respectively arranged on the lamp body, at least part of the side wall of the lamp body is transparent or semitransparent; the water pump is provided with a water inlet end and a water outlet end, the water inlet end communicates with the water inlet, and the water outlet end communicates with the water outlet. The ornamental lamp of the utility model has a simpler and more efficient structure and a longer service life, and the moving ornamental object is more ornamental.