Apple Inc.

Weibo Cheng

John N Border

Graham Butler Myhre

Sajjad Ali Khan

Nan Zhu

Tyler G Anderson

Brent J Bollman

Bryan W Posner

Simon R Lancaster-Larocque

Nathan K Gupta

Abhijit Ashok Kangude

Karan Bir

Sudirukkuge T Jinasundera

Prithu Sharma

Bren J Bollman

John Borden N

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.

Optical system for head-mounted display

A hybrid laser modulation and acid etch process for the creation of a patterned substrate. According to some embodiments, a hole is formed in a glass substrate by first modulating a portion of the substrate in the desired shape. A mask is coated on the glass substrate and is patterned to expose the modulated portion. The glass substrate is then acid etched to remove the modulated portion. Once the modulated portion has been etched, the desired shape may be removed from the glass substrate and the mask may be stripped.

Hybrid substrate processing

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Santa Clara, CA, United States of America

Weibo Cheng