Optical system and head-mounted display

US10747003B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Andrew J. Ouderkirk · Windom, 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: Apr 9, 2019
• Grant date: Aug 18, 2020
• Expiry date: Apr 9, 2039

Classification

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

Abstract

An optical system includes a reflective surface, a display adapted to emit image light toward the reflective surface, and a multilayer reflective polarizer disposed proximate the reflective surface. The multilayer reflective polarizer is curved about two orthogonal axes and includes at least one layer that is substantially optically uniaxial at at least one location. The image light is transmitted by the multilayer reflective polarizer after it is first reflected by the multilayer reflective polarizer. A head-mounted display includes a first optical system and a second optical system disposed proximate the first optical system.