DUAL AXIS INTERNAL OPTICAL BEAM TILT FOR EYEPIECE OF AN HMD

摘要

An eyepiece includes a display module for providing display light, a concave end reflector, and a viewing region including a partially reflective surface to redirect at least a portion of the display light out of an eye-ward side of the eyepiece along an emission path. The partially reflective surface is obliquely angled with an offset from 45 degrees relative to the eye-ward side to cause the emission path to have a first oblique angle in a horizontal dimension relative to a first normal vector of the eye-ward side. The concave end reflector is tilted such that a second normal vector from a center point of the concave end reflector is obliquely angled relative to a top or bottom surface of the eyepiece to cause the emission path to have a second oblique angle in a vertical dimension relative to the first normal vector of the eye-ward side.

主权项

1. An eyepiece, comprising:
a display module for providing display light along a forward propagation path within the eyepiece; a concave end reflector disposed at an opposite end of the eyepiece from the display module to reflect the display light back along a reverse propagation path within the eyepiece; and a viewing region disposed between the display module and the concave end reflector and including a partially reflective surface, the partially reflective surface to redirect at least a portion of the display light traveling along the reverse propagation path out of an eye-ward side of the eyepiece along an emission path, wherein the partially reflective surface is obliquely angled with an offset from 45 degrees relative to the eye-ward side to cause the emission path to have a first oblique angle in a horizontal dimension relative to a first normal vector of the eye-ward side, wherein the concave end reflector is tilted such that a second normal vector from a center point of the concave end reflector is obliquely angled relative to a top or bottom surface of the eyepiece to cause the emission path to have a second oblique angle in a vertical dimension relative to the first normal vector of the eye-ward side.