Patent ID: 9300930
Filing Date: 2016-03-29
CPC Classification: G02B,H04N

Claim Text:
1. An apparatus comprising: a laser light source to create a light beam; a sinusoidally scanning mirror positioned to reflect the light beam, the sinusoidally scanning mirror having an instantaneous scan phase that sweeps through a zero phase value and positive and negative video extents phase values; and a brightness compensation component configured to adjust brightness of the light beam using a multi-segment brightness compensation curve comprising at least two functions of the instantaneous scan phase, a first function of the at least two functions being used for a central segment of the multi-segment brightness compensation curve wherein the central segment includes the zero phase value and at least two other values, and a second function of the at least two functions being used for two other segments of the multi-segment brightness compensation curve when an absolute value of the instantaneous scan phase is equal to the positive video extents phase value; wherein the first function and the second function yield different values for a scan angle value of zero.