This document describes techniques directed to active thermal-control of a floodlight and associated floodlights. As described, an example floodlight includes a first heat-transfer subsystem that uses a fully enclosed heat sink to transfer heat from an array of LEDs to a first housing component of the floodlight. The floodlight further includes a second heat-transfer subsystem to transfer heat from one or more PSUs to a second housing component of the floodlight. Described techniques include using thermistors located throughout the floodlight to actively monitor a temperature profile within the floodlight and, if one or more operating-temperature thresholds are violated, reducing power consumption within the floodlight.

A light emitting diode (LED) device is provided. The LED device a first LED string configured to emit light having a first color temperature; a second LED string connected to the first LED string in parallel, and configured to emit light having a second color temperature different from the first color temperature; a controller configured to generate a control signal based on a control command received from an external controller; a switching circuit configured to control brightness of any one or any combination of the first LED string and the second LED string based on the control signal; and a power supply configured to generate an internal power voltage for operation of the controller and the switching circuit.

A light emitting diode (LED) device is provided. The LED device a first LED string configured to emit light having a first color temperature; a second LED string connected to the first LED string in parallel, and configured to emit light having a second color temperature different from the first color temperature; a controller configured to generate a control signal based on a control command received from an external controller; a switching circuit configured to control brightness of any one or any combination of the first LED string and the second LED string based on the control signal; and a power supply configured to generate an internal power voltage for operation of the controller and the switching circuit.

A testing device for inspecting an electronic device by causing contact terminals to electrically contact the electronic device, includes: a mounting table formed with a light transmission member opposite the side on which a inspection object is placed and having therein a coolant flow path through which a coolant capable of transmitting light flows; a light irradiation mechanism disposed so as to face the surface opposite the inspection object placement side of the mounting table, and having LEDs pointing toward the inspection object; and a controller controlling absorption of heat by the coolant and heating by the lights from the LEDs to control the temperature of the electronic device to be inspected. The controller controls the light output from the LEDs based on the measured temperature of the electronic device to be inspected and controls the absorption of heat by the coolant based on the LED light output.

An LED lighting fixture includes a housing, a substrate located within the housing, a plurality of LED groups of various colors mounted on the substrate, each LED color group including multiple LED components, at least one circuit communicating with a power supply and adapted for powering the LED components, and an optical component located at an output end of the housing. The LED components are arranged along first and second directions orthogonal to one another, such that no two LED of the same color reside adjacent one another along both of the first and second directions, and each LED component is spaced-apart from an adjacent LED component a distance no greater than 1.0 mm.

The invention provides an automotive lighting device for an automotive vehicle. This device comprises a voltage regulator, a temperature sensor and a controlled light group. The controlled light group comprises a plurality of light sources and a light driver, the light driver comprising terminals and being configured to selectively activate or deactivate current flow in each terminal, in such a way that each light source is connected to one of the terminals. The controlled light group is fed by a voltage output value of the voltage regulator, the temperature sensor is arranged to sense a temperature in a zone of the lighting device and send information to the voltage regulator and the voltage regulator comprises a control driver to modify the voltage output value when receiving information from the temperature sensor.

The invention provides an automotive lighting device for an automotive vehicle. This device comprises a voltage regulator, a temperature sensor and a controlled light group. The controlled light group comprises a plurality of light sources and a light driver, the light driver comprising terminals and being configured to selectively activate or deactivate current flow in each terminal, in such a way that each light source is connected to one of the terminals. The controlled light group is fed by a voltage output value of the voltage regulator, the temperature sensor is arranged to sense a temperature in a zone of the lighting device and send information to the voltage regulator and the voltage regulator comprises a control driver to modify the voltage output value when receiving information from the temperature sensor.

A digital micro-mirror device (DMD) system capable of increasing a lifespan of a digital micro-mirror. The DMD system includes an array unit that includes a plurality of digital micro-mirrors, and a DMD controller that controls the digital micro-mirror according to an image signal input from the outside, and changes a duty ratio of the digital micro-mirror according to a condition of components included in a vehicle or an environment around the vehicle.

A digital micro-mirror device (DMD) system capable of increasing a lifespan of a digital micro-mirror. The DMD system includes an array unit that includes a plurality of digital micro-mirrors, and a DMD controller that controls the digital micro-mirror according to an image signal input from the outside, and changes a duty ratio of the digital micro-mirror according to a condition of components included in a vehicle or an environment around the vehicle.

Disclosed are apparatus for controlling a lamp and a method thereof. The apparatus for controlling a lamp includes an information collection device that receives light amount information and temperature information of LED chips, which correspond to a plurality of LED boards, respectively, from the plurality of LED boards through one port, and a controller that controls a driving current for driving the LED chip based on the light amount information of the LED chip or the temperature information of the LED chip.