Dithered power matching of laser light sources in a display device

摘要

A technique for managing image quality in a laser-based imaging system is provided. Laser light sources are organized into two or more groups, and optical output power of a light source group containing an under-performing laser is matched to that of the under-performing laser, while the optical output power of the light sources in the remaining groups is not. The output of the laser light sources in each group is interleaved with the output of the laser light sources in the other groups, so that perceptual uniformity of a displayed image is maintained when the display is viewed from an appropriate viewing distance.

主权项

1. A method for managing image quality in a laser-based imaging system, the method comprising:
organizing a plurality of lasers into two or more subsets of lasers; within a first subset of lasers, identifying a first laser having an output level that is lower than any output level associated with any other laser in the first subset of lasers; for each of the other lasers in the first subset of lasers, adjusting the output level associated with the other laser to be substantially equal to the output level associated with the first laser; within a second subset of lasers, adjusting the output level associated with each laser in the second subset of lasers to be substantially equal to a second output level; and causing the outputs of the lasers within the first subset of lasers to be interleaved with the outputs of the lasers within the second subset of lasers to display an image on a display surface.