Abstract: A track head unit includes a lighting device, a first sensor, a second sensor, one or more motors, and a controller. The first sensor is configured to receive transmissions from a portable remote control device. The second sensor is configured to receive transmissions associated with a target object. The one or more motors are mechanically coupled to the lighting device and is configured to position the lighting device along a first direction and a second direction. The controller is coupled to the lighting device, the first sensor, the second sensor, and the one or more motors. The controller is configured to receive a control signal from the remote control device via the first sensor, responsively transmit a locator signal to a locator that is disposed at a target object, receive a response signal via the second sensor from the remote object in response to the transmitting, and based upon the response signal, actuate the motors to aim the lighting device at the target object.

Abstract: A hybrid chip-on-heatsink device comprises at least one LED die, at least one printed circuit board (PCB), and a thermally conductive substrate or heatsink. The LED die is physically and thermally coupled to the thermally conductive substrate. The PCB is physically coupled to the thermally conductive substrate. The LED die is electrically coupled to the PCB. The thermally conductive substrate acts as a spreader and as a heatsink, whereby heat is efficiently dissipated away from the LED die. The PCB may optionally contain other electrical components, and circuitry to create a “smart” LED package or light engine.

Abstract: A lighting unit having a substrate, a light source coupled to the substrate, the light source being configured to generate light. The lighting unit further includes an optical layer positioned over the light source and arranged relative to the substrate to define a region between a top side of the substrate and a bottom side of the optical layer, and a light reflector coupled to the optical layer. The light reflector being structured to reflect at least a portion of the light generated by the light source toward the top side of the substrate, and further structured to define a plurality of light transmissive regions which individually permit transmission of at least a portion of the light generated by the light source.

Abstract: Illumination device embodiments are provided which include a transparent bulb that carries at least one phosphor. A redirector is positioned within the bulb and at least one light-emitting diode (LED) is positioned over the redirector to be energized and emit light that excites the phosphor. The redirector helps to diffuse the resultant mix of LED-emitted light and phosphor-emitted light that issues from the device. The redirector also provides a heat path away from the LEDs. In a device embodiment, LEDS form first and second diode groups that have emission peaks in different regions. Selectively energizing these groups alters the color temperature of the device's light. Energizing both groups and varying currents of each group also alters the color temperature of the device's light. In other device embodiments, the redirector has a portion outside the bulb which may also define protuberances that enhance heat radiation. In yet other device embodiments, each LED may have an associated phosphor.