Patent ID: 9667950
Date: 2017-05-30
CPC Classifications: G03B,H04N

Claim:
1. An image projecting system, comprising: a projector, being configured to project a left-right eye test image according to a timing, to generate a plurality of different left-right eye synchronization signals with different phases only by delaying a standard left-right eye synchronization signal by a plurality of different time periods according to the timing, and to transmit the left-right eye synchronization signals with different phases in sequence according to the timing, wherein the left-right eye synchronization signals are substantially the same as the standard left-right eye synchronization signal, and only delayed by the different time periods; a pair of active stereoscopic glasses, comprising a left lens and a right lens, and being configured to receive the left-right eye synchronization signals from the projector; and a light meter, being electrically connected to the projector, and being configured to measure a plurality of left-lens brightness values and a plurality of right-lens brightness values through the left lens and the right lens, respectively, and to transmit the left-lens brightness values and the right-lens brightness values to the projector; wherein the projector further calculates a plurality of left-lens light leakage values of the left lens corresponding to the left-right eye synchronization signals according to the left-lens brightness values and a plurality of right-lens light leakage values of the right lens corresponding to the left-right eye synchronization signals according to the right-lens brightness values, so as to choose one of the left-right eye synchronization signals as an adjusted left-right eye synchronization signal according to the left-lens light leakage values and the right-lens light leakage values and to transmit the adjusted left-right eye synchronization signal to the pair of active stereoscopic glasses so that the pair of active stereoscopic glasses operates according to the adjusted left-right eye synchronization signal.