PROJECTION SYSTEMS AND METHODS

摘要

Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.

主权项

1. A method for projecting a color image, the method comprising:
for each of a sequence of fields, each of the fields associated with a corresponding color, setting an imaging element to spatially modulate light according to a pattern corresponding to the color and illuminating the imaging element with light of the corresponding color; wherein illuminating the imaging element with light of the corresponding color comprises directing light of the corresponding color onto a phase modulator that is controlled to provide a phase pattern operative to steer the light of the corresponding color to desired locations on the imaging device; and wherein the phase modulator is refreshed at a frequency that is less than a frequency with which the fields of the series of fields are presented.