Patent attributes
A lighting system adapted for use with a rolling shutter imagers. The system uniquely provides synchronous operation of a light source in the context of an imager with a “rolling-shutter”-type exposure architecture. The preferred embodiment comprises a lamp such as a LED, a drive circuit coupled to the lamp capable of energizing the lamp for switching the lamp on and off, and a lamp control circuit coupled to the drive circuit with a means for receiving a timing signal from an imaging system, the lamp control circuit synchronously energizing the lamp with the timing signal via the drive circuit, the timing signal being a line timing signal for a PWM system based on a multiple of lines, a signal indicating a pause in the imager readout, or a signal indicating a portion of the imager readout time when the lamp may safely be flashed on without corrupting the desired active imager lines.
