Abstract: 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.

Abstract: A lighting system adapted for use with a rolling shutter imagers. The system uniquely provides PWM-control of a light source in the context of an imager with a “rolling-shutter”-type exposure architecture that operates on a line-by-line basis rather than a frame-by-frame basis. 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 line timing signal from an imaging system, the lamp control circuit synchronously energizing the lamp with the line timing signal via the drive circuit, the line timing signal being based upon the horizontal line rate of the imager.

Abstract: A lighting system adapted for use with a rolling shutter imagers. The system uniquely provides PWM-control of a light source in the context of an imager with a “rolling-shutter”-type exposure architecture that operates on a line-by-line basis rather than a frame-by-frame basis. 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 line timing signal from an imaging system, the lamp control circuit synchronously energizing the lamp with the line timing signal via the drive circuit, the line timing signal being based upon the horizontal line rate of the imager.