Patent · US Active

Liquid crystal reflective polarizer and pancake lens assembly having the same

US11269131B2 · kind B2 · utility

1Cited by

2References

17Claims

0Family size

Assignee

Facebook Technologies, LLC · US

Inventors

Fenglin Peng · Redmond, US
Junren Wang · Mercer Island, US
Yuge HUANG · Riverside, US
Lu Lu · Kirkland, US
Yusufu Njoni Bamaxam Sulai · Bothell, US
Ying Geng · Bellevue, US
Jacques Gollier · Sammamish, US
Barry D. Silverstein · Menlo Park, US
Yu-Jen Wang · San Jose, US
Yun-Han Lee · Hengshan, TW

Key dates

Filing date	Mar 16, 2020
Grant date	Mar 8, 2022
Priority date	—
Expiry date	Mar 16, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F2413/13
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical device is provided. The optical device includes a first optical element configured to output an elliptically polarized light having one or more predetermined polarization ellipse parameters. The optical device also includes a second optical element including a birefringent material with a chirality, and configured to receive the elliptically polarized light from the first optical element and reflect the elliptically polarized light as a circularly polarized light.

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