Optical system for head-mounted display
First Claim
1. A head-mounted display configured to display images viewable by a user, comprising:
- an array of pixels configured to produce the images;
a linear polarizer through which light associated with the images passes;
a first planar quarter wave plate that receives the light from the linear polarizer;
a plano-convex lens element having a convex surface and an opposing planar surface;
a partially reflective mirror on the convex surface;
a reflective polarizer;
a second planar quarter wave plate, wherein the second planar quarter wave plate is between the reflective polarizer and the partially reflective mirror; and
a plano-concave lens element having a concave surface and an opposing planar surface, wherein the planar surface of the plano-concave lens element is interposed between the concave surface and the planar surface of the plano-convex lens element, and wherein the planar surface of the plano-convex lens element is interposed between the planar surface of the plano-concave lens element and the convex surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A head-mounted display may include a display system and an optical system in a housing. The display system may have a pixel array that produces light associated with images. The display system may also have a linear polarizer through which light from the pixel array passes and a quarter wave plate through which the light passes after passing through the quarter wave plate. The optical system may be a catadioptric optical system having one or more lens elements. The lens elements may include a plano-convex lens and a plano-concave lens. A partially reflective mirror may be formed on a convex surface of the plano-convex lens. A reflective polarizer may be formed on the planar surface of the plano-convex lens or the concave surface of the plano-concave lens. An additional quarter wave plate may be located between the reflective polarizer and the partially reflective mirror.
35 Citations
21 Claims
-
1. A head-mounted display configured to display images viewable by a user, comprising:
-
an array of pixels configured to produce the images; a linear polarizer through which light associated with the images passes; a first planar quarter wave plate that receives the light from the linear polarizer; a plano-convex lens element having a convex surface and an opposing planar surface; a partially reflective mirror on the convex surface; a reflective polarizer; a second planar quarter wave plate, wherein the second planar quarter wave plate is between the reflective polarizer and the partially reflective mirror; and a plano-concave lens element having a concave surface and an opposing planar surface, wherein the planar surface of the plano-concave lens element is interposed between the concave surface and the planar surface of the plano-convex lens element, and wherein the planar surface of the plano-convex lens element is interposed between the planar surface of the plano-concave lens element and the convex surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 21)
-
-
10. A head-mounted display configured to display images viewable by a user, comprising:
-
an array of pixels configured to produce the images; a linear polarizer through which light associated with the images passes; a first quarter wave plate that receives the light from the linear polarizer; a first lens element having first and second opposing surfaces; a second lens element having third and fourth opposing surfaces, wherein the third surface faces the second surface; a third lens element having fifth and sixth opposing surfaces, wherein the fifth surface faces the fourth surface; a partially reflective mirror on the first surface; a second quarter wave plate, wherein the second quarter wave plate is between the second and third surfaces; and a reflective polarizer between the fourth and fifth surfaces. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A head-mounted device configured to present images to a user, comprising:
-
a support structure configured to be worn on a head of the user; a display system supported by the support structure that produces light for the images; and a catadioptric optical system supported by the support structure that focuses the light as the light passes to the user from the display system, wherein the catadioptric optical system includes a first lens element having a first surface that is convex and having an opposing second surface, a partially reflecting mirror on the first surface, a quarter wave plate at the second surface, a second lens element having a third surface at the quarter wave plate and an opposing fourth surface that is concave, a reflective polarizer at the fourth surface having a reflection axis and having a pass axis that is perpendicular to the reflection axis, and a third lens element having a fifth surface that is convex at the reflective polarizer and an opposing sixth surface that is concave. - View Dependent Claims (18, 19, 20)
-
Specification