Certain embodiments of the disclosed technology include a decorative lighting system that can be integrated with an artificial tree. The decorative lighting system may include a white light emitting diode (LED) light string and a variable-color LED light string. The variable-color LED light string may employ LED lamps having embedded Red, Green, and Blue (RGB) LEDs. The RGB LED lamps may include an embedded integrated circuit (IC) configured to communicate with and control the energizing of each of the corresponding RGB LEDs to create a multitude of colors and color combinations that can vary with time to create a light show. An electronic controller in communication with the LED lamps may allow a user to select the mode for the light show and further may provide a periodic reset signal to restart or re-synchronize the light show.

A controllable lighting device may utilize a controllable impedance circuit to conduct a load current through an LED light source. The controllable impedance circuit may be coupled in series with a first switching device, which may be rendered conductive and non-conductive via a pulse-width modulated signal to adjust an average magnitude of the load current. The controllable lighting device may further comprise a control loop circuit that includes a second switching device. The second switching device may be rendered conductive and non-conductive in coordination with the first switching device to control when a feedback signal is provided to the control loop circuit and used to control the LED light source. The control loop circuit may be characterized by a time constant that is significantly greater than an operating period of the load current.

A controllable lighting device may utilize a controllable impedance circuit to conduct a load current through an LED light source. The controllable impedance circuit may be coupled in series with a first switching device, which may be rendered conductive and non-conductive via a pulse-width modulated signal to adjust an average magnitude of the load current. The controllable lighting device may further comprise a control loop circuit that includes a second switching device. The second switching device may be rendered conductive and non-conductive in coordination with the first switching device to control when a feedback signal is provided to the control loop circuit and used to control the LED light source. The control loop circuit may be characterized by a time constant that is significantly greater than an operating period of the load current.

A light fixture including a substrate and a plurality of light emitting diodes mounted on the substrate. The plurality of light emitting diodes includes a first light emitting diode having a peak wavelength within a range of 600 nanometers and 630 nanometers, and a full width at half maximum value of at least 140 nanometers.

A light fixture including a substrate and a plurality of light emitting diodes mounted on the substrate. The plurality of light emitting diodes includes a first light emitting diode having a peak wavelength within a range of 600 nanometers and 630 nanometers, and a full width at half maximum value of at least 140 nanometers.

In various embodiments, lighting systems include a carrier having a plurality of conductive elements disposed thereon and a light-emitting array. The light-emitting array is disposed over the carrier and includes a plurality of light-emitting diodes (LEDs), each of which has at least two electrical contacts electrically connected to conductive elements.

In various embodiments, lighting systems include a carrier having a plurality of conductive elements disposed thereon and a light-emitting array. The light-emitting array is disposed over the carrier and includes a plurality of light-emitting diodes (LEDs), each of which has at least two electrical contacts electrically connected to conductive elements.

The invention provides an improved device with a touch user interface for controlling a load. The device comprising: an array of individually controllable LED light sources; data lines for interconnecting successive LED light sources to obtain a daisy-chain of successive LED light sources in said array and for rippling control data through the daisy-chain to a particular LED light source in said array, wherein the particular LED light source in said array is arranged for removing one or more bits from the control data and for providing resulting control data downstream (i.e. e.g. to a successive LED light source) in the daisy-chain; a feedback line for feeding back the resulting control data; a touchpad for connecting, when in use touched, one of the data lines and the feedback line; a controller comprising (i) an output for sending the control data over said data lines to the particular LED light source, and (ii) an input for receiving the resulting control data over the feedback line when the touchpad is touched; and the controller being arranged for (i) comparing said sent control data with said received resulting control data for associating the touchpad, when in use touched, with a position in the array of individually controllable LED light sources of the particular LED light source, and (ii) providing a control signal for controlling the load based on said position.

The invention provides an improved device with a touch user interface for controlling a load. The device comprising: an array of individually controllable LED light sources; data lines for interconnecting successive LED light sources to obtain a daisy-chain of successive LED light sources in said array and for rippling control data through the daisy-chain to a particular LED light source in said array, wherein the particular LED light source in said array is arranged for removing one or more bits from the control data and for providing resulting control data downstream (i.e. e.g. to a successive LED light source) in the daisy-chain; a feedback line for feeding back the resulting control data; a touchpad for connecting, when in use touched, one of the data lines and the feedback line; a controller comprising (i) an output for sending the control data over said data lines to the particular LED light source, and (ii) an input for receiving the resulting control data over the feedback line when the touchpad is touched; and the controller being arranged for (i) comparing said sent control data with said received resulting control data for associating the touchpad, when in use touched, with a position in the array of individually controllable LED light sources of the particular LED light source, and (ii) providing a control signal for controlling the load based on said position.

The invention discloses a golf ball hitting system for training assistance in the technical field of golf. A main control chip is controlled by a remote control server module so as to control a light-guiding line module and a laser light generator to display on the ground: a target point; a linear motion trajectory of a putter to stabilize the direction; the back swing length and the follow-through length to operate the swing amplitude of the putter; and a laser light point to guide the swing speed of a club head and stabilize the rhythm. With the assistance of the invention, the putting performance of a golfer can be effectively improved.