3‐2: Invited Paper: Dual‐edge Color Sequential Front‐lit LCOS for AR Glasses Applications

A novel color sequential (CS) Front‐lit LCOS (FL‐LCOS) with dual‐edge illumination system is introduced. It enables better etendue matching and hence, a better light efficiency is realized. Accompanied with a tailormade FOV 30 deg. collimator, the projector volume is only 0.98 c.c. for a 1024x1024 display. With such efficient and compact FL‐LCOS based projectors, we had demonstrated AR glasses with brightness‐to‐eye >1000nits with 2D diffractive waveguides. A newly developed 0.17” 720x720 FL‐LCOS will also be introduced. The total projector size can be shrunk down to <0.4c.c., and it can provide 0.6lm~0.8lm out of the projector with only 200mW LED power. We believe that it can be a promising candidate for the AR glasses applications.