Patent ID: 7729028

Claim:
A method for projecting a two-dimensional image, the method comprising: emitting at least one laser beam; sweeping the laser beam with a first scan mirror along a first scan direction to form a scan line on the projection surface, and sweeping the scan line with a second scan mirror along a second scan direction generally orthogonal to the first scan direction to form a raster pattern of scan lines on the projection surface; driving the scanning means of the first scan mirror with a stimulus waveform, wherein the stimulus waveform has a fundamental frequency that is substantially equal to the resonance frequency of the first scanning means and contains harmonics of that resonance frequency to produce a substantially constant velocity of the swept laser beam on the projection surface along the first scanning direction; and causing selected pixels to be illuminated, and rendered visible, by the laser beam to produce the image; wherein the stimulus waveform is a combination of a first waveform and a second waveform and the second waveform is a pulse waveform.