An illumination device for a light modulated projector includes a first and a second colour wheel. A first filter surface of the first colour wheel comprises at least three first surface sections arranged one behind the other, which protrude into an illumination beam path of the illumination device successively on rotation and in each case convey illumination radiation of a different partial range of the visible wavelength range. At least one of the first surface sections of the first filter surface conveys illumination radiation from the infrared range. A second filter surface of the second colour wheel comprises a first surface segment which only conveys illumination radiation from the visible wavelength range and a second surface segment which only conveys illumination radiation from the infrared range. The first and second surface segments protrude into the illumination beam path successively on rotation.

An illumination device for a light modulated projector includes a first and a second colour wheel. A first filter surface of the first colour wheel comprises at least three first surface sections arranged one behind the other, which protrude into an illumination beam path of the illumination device successively on rotation and in each case convey illumination radiation of a different partial range of the visible wavelength range. At least one of the first surface sections of the first filter surface conveys illumination radiation from the infrared range. A second filter surface of the second colour wheel comprises a first surface segment which only conveys illumination radiation from the visible wavelength range and a second surface segment which only conveys illumination radiation from the infrared range. The first and second surface segments protrude into the illumination beam path successively on rotation.

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.

An improved detector device for locating studs and other objects behind a substrate (such as a wall) uses one or more light emitting diodes (LEDs) in combination with a photochromic compound to mark the locations on the substrate behind which objects are located.

An improved detector device for locating studs and other objects behind a substrate (such as a wall) uses one or more light emitting diodes (LEDs) in combination with a photochromic compound to mark the locations on the substrate behind which objects are located.

A Light device having built-in digital data means is powered by an unlimited power source for a lamp-holder, LED bulb, or light device connected to unlimited power source by prongs or a base that or conductive wires can be inserted into a socket that would otherwise receiving a bulb. The device may take the form of a web cam having auto tracking added one of plurality functions to make different products and functions and retractable prongs that plug directly into a wall outlet or insert into existing lamp base or incorporate conductive wire to make electric connection at least one of built-in camera, storage unit, wireless kits, Bluetooth kits, motion sensor, light device.

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.

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.

An aquarium system includes an aquarium tank arrangement and a light source. The light source has a controllable output of colored light projecting into the aquarium tank arrangement. The light source can provide a cycle of projecting light of at least two different colors.

A lighting device, which may be used e.g. to produce motor vehicle lamps, may include a light radiation source, e.g. a LED source, having a light-permeable body arranged facing source for propagating light radiation along a longitudinal axis. The light-permeable body includes a collimator exposed to light radiation source and adapted to collect light radiation and to inject it into light-permeable body, a tapered portion coupled to collimator for receiving light radiation and directing it towards an output end, a distal portion acting as an emission filament, coupled to the output end of tapered portion, with an output mirror having a shank portion extending in said distal portion and a head portion, the output mirror reflecting light radiation radially from longitudinal axis and proximally towards said light radiation source.