Augmented reality display system for smart glasses with streamlined form factor

A smart glass augmented reality (AR) display system is designed with a streamlined form factor featuring an off-axis mirror design. The main component of the combiner optics is in the shape of a regular pair of eyeglasses or sunglasses, with no diffractive gratings, waveguides (lightguides), prisms or Fresnel surfaces involved. High quality see-through performance is achieved with a low-cost combiner that consists of only highly manufacturable reflective surfaces. The 20-degree full field of view of the AR display is centered at about 30 degrees with respect to the center of the ocular vision. Such a design allows the user to have a clear unobscured central field of view. At the same time, the projected image is accessible by moving the eyeball off the central vision. The system is designed with a circular eye box with more than 10 mm in diameter.