Hybrid Light Engine for Projector

摘要

A projector includes a light source, a filter unit, an auxiliary light source and a combiner. The light source produces a first beam of light having light in a plurality of ranges of wavelengths, corresponding to a plurality of colors. The filter unit is positioned in the optical path of the first light beam. The filter unit is configured in a first configuration during a first time interval and in a second configuration during a second time interval. When the filter unit is configured in the second configuration, the auxiliary light source produces a second beam of light. The combiner combines the first beam of light and the second beam of light. The combined beams of light are directed to a spatial light modulator.

主权项

1. A projector, comprising:
a first light source producing a first light beam, the first light beam having light in a first range of wavelengths and having light in a second range of wavelengths, wherein the first range and the second range have no wavelengths in common; a filter unit positioned in an optical path of the first light beam, wherein:
the filter unit is configured in a first configuration during a first time interval;the filter unit is configured in a second configuration during a second time interval; andthe filter unit is configured in a third configuration during a third time interval; a second light source producing a second light beam, wherein:
the second light beam includes light in a third range of wavelengths, andthe third range is not in the first range or in the second range; andthe second light source produces the second light beam only during the third time interval; and a first combiner positioned after the filter unit in the optical path, wherein the first combiner merges the second light beam into the first light beam.