Patent · US Active

Optical system for displaying an object to a viewer

US11156814B2 · kind B2 · utility

4Cited by

6References

5Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Michael L. Steiner · New Richmond, US
Andrew John Ouderkirk · Kirkland, US
Timothy L. Wong · Windom, US
Zhisheng Yun · Woodbury, US
Jo A. Etter · Stillwater, US
Gilles J. Benoit · Minneapolis, US
John D. Le · Woodbury, US
Erin A. McDowell · Afton, US

Key dates

Filing date	Mar 21, 2018
Grant date	Oct 26, 2021
Priority date	—
Expiry date	Oct 13, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/283
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical system including one or more optical lenses, at least one retarder layer, a reflective polarizer, and a partial reflector is provided. The at least one retarder layer may include first and second retarder layers having different wavelength dispersion curves. The at least one retarder layer may include a first retarder layer having a non-uniform fast axis orientation and/or a non-uniform retardance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.