A steerable lighting and/or optical device for a vehicle. A light source transmits a light beam to a rotating mirror which scans or points the light transversely ahead of the vehicle to create a desired beam shape. An intensity of the light source may be modulated during sweeping, including modulation to zero intensity, to control the pattern of light generated by the sweeping beam.

A handle lighting assembly for an appliance includes features that allow a consumer to readily change the color of the light emitted from the handle lighting assembly as desired. In one exemplary aspect, the handle lighting assembly includes features that allow a consumer to readily interchange colored films to and from the handle lighting assembly based on the desired emitted light color.

According to the present disclosure, an optoelectronic assembly is disclosed with at least one optoelectronic component, and a sensor circuit. The sensor circuit includes at least one energy supply circuit and an ascertainment circuit having at least one energy storage unit and a detection unit. The ascertainment circuit and the at least one optoelectronic component are electrically connected to one another in parallel. The at least one energy supply circuit is configured to supply electrical energy to the at least one optoelectronic component and the energy storage unit. The energy stored in the energy storage unit is supplied independently of the electrical energy supplied to the at least one optoelectronic component. The ascertainment circuit is configured such that the detection unit detects a change of the electrical energy stored in the energy storage unit depending on a change of the energy stored in the at least one optoelectronic component.

In accordance with various embodiments of the disclosed subject matter, a lighting control method, a related lighting apparatus and system are provided. One embodiment of the present disclosure provides a lighting control method. The method includes detecting a connection status of a wireless network component of a lighting apparatus and controlling a working status of an illumination component of the lighting apparatus based on the connection status.

Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.

A LED driving system has an energy storage component receiving an input voltage, a power switch coupled between the energy storage component and a reference ground, a first output switch coupled between the energy storage component and a first output terminal, a second output switch coupled between the energy storage component and a second output terminal, and a control circuit, wherein the first output terminal produces a first output voltage to supply power for a first LED array, the second output terminal produces a second output voltage to supply power for a second LED array, the control circuit controls a duty cycle of the first output switch according to voltages at cathode terminals of multiple LED strings in the LED array and controls a duty cycle of the second output switch according to voltages at cathode terminals of multiple LED strings in the second LED array.

An automatic sensing system includes at least one LED lamp, and at least one sensing control device. Each of at least one LED lamp includes at least three operation modes. The three operation modes includes a closing mode, a low light mode, and a fill light mode. The sensing control device includes an illumination detecting module, a pyroelectric sensing module, a signal processing module, and a lamp control module. The signal processing module is configured for processing the signal data output from the pyroelectric sensing module based on the signal data detected by the illumination detecting module and outputting a control signal. The lamp control module is configured for controlling all of the LED lamps to work in one of the three operation modes so as to make any one of the at least one sensing control device to control all of the LED lamps to work. The invention further includes an automatic sensing control method for LED lighting.

A protection circuit for short circuit of LED power supply includes a constant voltage source powered by the LED power supply, a constant current source powered by the LED power supply, a switching module for controlling the constant current source to turn off or turn on, and an output current detecting module for controlling the switching module to turn off or turn on. The constant current source is provided in parallel with the constant voltage source. The switching module includes a P-typed triode connected in series to the constant current source. The output current detecting module includes a N-typed triode, a base of the N-typed triode being electrically connected to the output terminal of the constant voltage source, an emitter of the N-typed triode grounding, and a collector of the N-typed triode being electrically a base of the P-typed triode.

An LED bar lighting with uniform illumination includes at least two LED chips, and a bar lens. Each of at least two LED chips includes an optical axis. The bar lens includes an in-light surface profile line and an out-light surface profile line in a cross section perpendicular to the axial direction of the bar lens. The in-light surface profile line includes a first arc and tow second arcs arranged two sides of the first arc. The first arc is tangent to the second arc and the radius of the first arc is smaller than that of the second arc. The radius of the out-light surface profile line is gradually reduced toward two sides thereof from an intersection of the out-light surface profile line and the optical axis. The radius of the out-light surface profile line at the intersection of the out-light profile line and the optical axis is infinite, and the refraction angle at both end points of the out-light surface profile line is 0 degree.

Systems and methods are disclosed for a police vehicle exterior light control. An example disclosed police vehicle includes first beacons positioned on a chassis of the police vehicle, second beacons positioned on a lightbar of the police vehicle, and a plurality of spotlights on the lightbar. The example police vehicle also includes a light control unit that tracks a location of wearable nodes associated with a police officer. Additionally, the light control unit illuminates the area around the police officer using selected ones of the plurality of spotlights.