Image waveguide having a bend
AssigneeGoogle Inc.
InventorDaniel G. Kelly
Life of this patent
Estimating the term…
Abstract
An optical apparatus having a waveguide that includes a bend, a first segment and a second segment operatively coupled at the bend, the first and second segments each including a pair of reflective surfaces being substantially parallel and opposing each other. An in-coupling region receives light into the first segment of the waveguide, and an out-coupling region allows the light to exit the second segment of the waveguide. A light filtering region disposed near the bend between the first segment of the waveguide and the second segment of the waveguide will selectively filter light transmitted from the first segment of the waveguide to the second segment of the waveguide.
Claims23
An optical apparatus comprising:
- a waveguide having a bend and including a first segment and a second segment operatively coupled at the bend, the first and second segments each including a pair of reflective surfaces being substantially parallel and opposing each other to guide light along an optical path disposed at least partially between the reflective surfaces;
- an in-coupling region to receive the light into the first segment of the waveguide;
- an out-coupling region to allow the light to exit the second segment of the waveguide;
- and
- a light filtering region disposed near the bend between the first segment of the waveguide and the second segment of the waveguide to selectively filter light transmitted from the first segment of the waveguide to the second segment of the waveguide.
A head mounted display for rendering an augmented reality to a user, the head mounted display comprising:
- a waveguide including:
- a bend;
- a first segment and a second segment operatively coupled at the bend, the first and second segments each including a pair of reflective surfaces being substantially parallel and opposing each other to guide light along an optical path disposed at least partially between the reflective surfaces;
- an in-coupling region to receive the light into the first segment of the waveguide;
- an out-coupling region to allow the light to exit the second segment of the waveguide;
- and
- a light filtering region disposed near the bend between the first segment of the waveguide and the second segment of the waveguide to selectively filter light transmitted from the first segment of the waveguide to the second segment of the waveguide;
- an image source positioned to launch a computer generated image into the in-coupling region of the waveguide;
- and
- a frame assembly to support the waveguide and the image source for wearing on a head of the user.
Dependencies are inferred from the claim text.