Systems, devices and methods for integrating eye tracking and scanning laser projection on wearable head-up displays

摘要

Described are systems, devices, and methods that incorporate eye tracing capability with scanning laser projector ("SLP") based wearable head up displays. An infrared laser diode is added to the RGB SLP and an infrared photodetector is arranged to detect reflections of infrared light from the eye features. The hologram optical element ("HOE") can be used to couple visible light, infrared light, and ambient light to a user ' The HOE can be hybridized and multiplexed to apply a positive or negative optical power to the positive optical power and visible light to the visible light.