Patent ID: 9693029
Date: 2017-06-27
CPC Classifications: G01J,G02B,H04N

Claim:
1. A scanning laser projector, comprising: at least one source of laser light; a scanning mirror configured to reflect the laser light; a perimeter defining an image region inside the perimeter and an over scanned region outside the perimeter, the image region and over scanned region configured to receive the reflected laser light, wherein the perimeter is defined by an opening surrounded by a border fixture, where the opening resides in a virtual plane through which the reflected laser light in the image region passes; a photodetector configured to receive a portion of the reflected laser light impacting the over scanned region outside the perimeter, the photodetector further configured to provide a feedback signal responsive to the portion of the reflected laser light received by the photodetector; and a drive circuit configured to provide an excitation signal to excite motion of the scanning mirror, the drive circuit configured to modify the excitation signal in response to the feedback signal.