Various examples related to automatic light control for illumination of a feature of interest are presented. A lighting system can automatically track a feature of interest, and/or a target positioned in relation to a feature of interest, and position one or more light sources to maintain illumination of the feature of interest. The location of the target, or the feature of interest, can be tracked using images captured by an image capture device and the orientation of one or more light sources can be adjusted to direct beams of light at the feature of interest. The beams of light can produce substantially shadow free illumination of the feature of interest. The controller can automatically calibrate a light source based on identifiable features within a captured image to ensure accurate movement of the light sources when tracking the target or feature of interest in or near real time.

A LED lighting device includes LEDs operable to emit light when powered through an electrical path. The LED lighting device includes a housing and a communications module for wireless communication to and from the LED lighting device. An antenna for receives and transmits a wireless signal where the antenna comprises a slot in the housing. A power supply in the electrical path for providing power to the LEDs may be retained in the housing. The communications module may be retained in the housing with the power supply. The housing may form part of the LED lighting device structure such as a reflector surface.

A heat sink for a directional recessed lighting fixture, comprises a wedge-shaped rotatable inner heat sink 110 configured to fit within a hollow interior of an outer heat sink 130. The inner heat sink has an opening 120, for transmission of light from a light source 125 it houses. The inner heat sink includes a gimbal shaft 115 pivotally mounted to an inside wall 132 of the outer heat sink. The inner heat sink has a vertical surface 112 formed on one side, which is close to inside wall 132, when rotated in one direction (FIG. 1A) to direct light in a first direction. The inner heat sink has an angularly offset surface 114 formed on an opposite side, which is close to the inside wall, when rotated in an opposite direction (FIG. 1B) to direct light in a second direction.

A smart home-care lighting system includes a lighting device having a portion that is light transmittable. The lighting device receives therein an illumination module for purpose of illumination, a detection module for detecting an outside environment, an alarm module and a sound effect module operable in combination with the detection module for indication and alarming, and an image pickup module for capturing and recording images. The lighting device also includes, arranged therein, a microprocessor and a main control module for transmitting and storing personal habits and health information. The device is arranged such that image can be captured in ranges that does not overlap to provide a surveillance range of 360-degree full view and operation can be made with the main control module for determination for proper action to be taken and may be used in combination with household appliances to construct a smart home-care system that benefit home members.

Disclosed is a lighting assembly for providing electrically configured light distributions and illumination patterns. The light distributions can be pre-configured and stored in a memory device or adjusted once installed in an environment by use of a wired or wireless controller or control device. The lighting assembly comprises at least one primary transmissive optical element and multiple light sources arranged in two or more independently addressed electrical channels spatially arranged on a common plane of the lighting assembly housing. Each light source channel is both physically separated and electrically adjustable in order to control light input into the optical element and subsequently adjust the light distribution output of the lighting assembly. The lighting assembly can be used to provide a wide range of symmetric and asymmetric lighting distributions for direct or indirect lighting as well as focusing or defocusing a projected beam in a spotlight or downlight configuration. The lighting assembly is therefore useful in a wide range of typical indoor and outdoor lighting applications including downlighting, spotlighting, wall washing, cove lighting, retail lighting, warehouse lighting. It is also possible to produce useful tunable white or color related lighting effects wherein different color temperature variants of white or different colors, such as red, green or blue might have different lighting distributions.

A downlight apparatus includes a driver, a light source, a light holder, a first switch and a second switch. The driver has a power converter and a controller. The light holder is used for fixing the light source. The holder bottom of the light holder defines a light opening. The light source emits a light from the light opening. The light holder is placed in an installation cavity. The rim structure is connected to the holder bottom. The rim structure has a rim edge concealing the installation cavity. The first switch is provided for users to operate to adjust a setting. The second switch is provided for users to operate to adjust the setting. The first switch is concealed in the installation cavity. The second switch is placed on the rim edge exposed outside the installation cavity. The first switch and the second switch are coupled to the controller.

A light with retractable sleeve comprises housing, a retractable sleeve disposed inside the housing, and a light body embedded in a front end of the retractable sleeve and protruding out of the housing; the retractable, sleeve comprising an inner sleeve, an outer sleeve disposed outside the inner sleeve, and a connector; the inner sleeve having a gear rack; the outer sleeve having thereon a button corresponding to the gear rack; the button being attached on the gear rack via a resilient element to prevent the outer sleeve from undesirably moving out of the inner sleeve along the axial direction; the outer sleeve and the inner sleeve can be extended with each other, so that the outer sleeve is extended out of the housing, thereby facilitating the light body installed thereon, the structure is simple and easy to use.

A fire rated lighting housing (can) has: (a) a bottom that is open; (b) a top that is at least mostly closed or entirely closed; (c) a sidewall that runs from the bottom to the top; and (d) a fire-retarding material that is physically touching at least some portion of the sidewall when the sidewall is in a cool-state. The cool-state is when a temperature of the housing is at or below a predetermined normal operating temperature for the housing. This fire rated lighting housing, with the fire-retarding material, is configured to slow a fire from a lower floor reaching an above located adjacent floor with a minimum predetermined fire rating, which may be at least one (1) hour or more. Additionally, the top and the sidewall at least mostly enclose an internal-volume that is configured to directly house a light emitting element, like a LED (light emitting diode).

A recessed downlight integrates a light engine assembly with a junction box containing a driver assembly. A single torsion spring is supplied at an end of the light engine assembly remote from its connection to the junction box, while a leaf spring attaches to the junction box near its connection to the light engine assembly, or is alternatively integrated into an extension of the junction box. The leaf spring allows for a high-enough tension to hold the light unit assembly in place in thin sheet metal, while allowing for a low-enough tension to accommodate holding the light unit assembly in place in drywall or a drop ceiling.

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The inventions include an airflow surface to direct air existing the fan cavity along an LED light fixture. Moreover, disclosed embodiments include one or more UV light sources which irradiate contaminants as air flows through the ceiling tile.