Patent · US Active

Optical microcavity for a high-contrast display

US10073293B2 · kind B2 · utility

0Cited by

2References

21Claims

0Family size

Assignee

The Board of Trustees of the University of Illinois · US

Inventors

Paul V. Braun · Champaign, US
Osman S. Cifci · Urbana, US
Eric Scott Epstein · Urbana, US
Hao Chen · Beijing, CN
Lu Xu · San Jose, US
Ralph G. Nuzzo · Champaign, US

Key dates

Filing date	Apr 11, 2017
Grant date	Sep 11, 2018
Priority date	—
Expiry date	Apr 22, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/34
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.

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