See-through eyepiece for head wearable display

摘要

An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region. The light guide component includes an input surface oriented to receive the display light into the light guide component, an eye-ward facing surface having a reflection portion and a viewing portion, a folding surface oriented to reflect the display light received through the input surface to the reflection portion of the eye-ward facing surface, and a first interface surface oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface. A partially reflective layer is disposed on the first interface surface in the viewing region to reflect the display light along the eye-ward direction through viewing portion of the eye-ward facing surface.

主权项

1. An eyepiece for a head wearable display, the eyepiece comprising:
a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region, the light guide component including:
an input surface oriented to receive the display light into the light guide component at the peripheral location;an eye-ward facing surface having a reflection portion and a viewing portion, wherein the input surface is a distinct and separate surface from the eye-ward facing surface;a folding surface disposed adjacent to the input surface and opposing the eye-ward facing surface, the folding surface oriented to reflect the display light received through the input surface to the reflection portion of the eye-ward facing surface; anda first interface surface disposed opposing the eye-ward facing surface in the viewing region and oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface, wherein the first interface surface and the folding surface are discontinuous surfaces with different curvatures; and a partially reflective layer disposed on the first interface surface in the viewing region, the partially reflective layer to reflect the display light along the eye-ward direction through the viewing portion of the eye-ward facing surface.