The invention discloses a polarized light reuse imaging method and a micro optical engine
system based on an optical wand. Illuminating rays emitted by an
LED illumination light source pass through the non-imaging optical element optical wand, a splitting lens and a polarized light conversion
system to realize uniform light,
beam splitting and shaping and polarized light conversion of the illuminating rays, and reaches an LCoS micro-display
chip through collection and transfer of a follow-up
relay system to form uniform illuminating spots; the illuminating spots illuminate an image on the LCoS micro-display
chip to form a required image; and then, projection imaging is carried out on the image through a PBS polarizing
prism, an imaging projection objective lens or an
eye lens, wherein the optical wand serves as a generation source of a two-dimensional virtual
light source array, the splitting lens carries out re-imaging on the two-dimensional virtual
light source array formed at the front end of the optical wand, and the corresponding polarized light conversion system is added to a splitting surface of the illuminating rays to realize conversion of polarized light. The method can greatly improve light efficiency under the condition of basically not increasing size and cost of an original illumination system.