Head-mounted display

US9557568B1 · kind B1 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Andrew John Ouderkirk · Kirkland, US
• Timothy L. Wong · Windom, US
• Zhisheng Yun · Woodbury, US
• Erin A. McDowell · Afton, US
• Gregg A. Ambur · River Falls, US

Key dates

• Filing date: Sep 25, 2015
• Grant date: Jan 31, 2017
• Expiry date: Sep 25, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0138
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A head-mounted display including a first optical system is provided. The first optical system includes an image surface, a stop surface, a first optical stack disposed between the image surface and the stop surface and a second optical stack disposed between the first optical stack and the stop surface. The first optical stack includes a first optical lens and a partial reflector. The second optical stack includes a second optical lens, a multilayer reflective polarizer and a first quarter wave retarder disposed between the multilayer reflective polarizer and the first optical stack. The multilayer reflective polarizer may be convex toward the image surface along orthogonal first and second axes.