Patent · US Active

Screen for an HMD

US11150479B2 · kind B2 · utility

2Cited by

2References

4Claims

0Family size

Assignee

Carl Zeiss Meditec AG · DE

Inventors

Stefan Saur · Aalen, DE
Marco Wilzbach · Stuttgart, DE
Christopher Käsbach · Aalen, DE

Key dates

Filing date	Aug 11, 2020
Grant date	Oct 19, 2021
Priority date	—
Expiry date	Aug 11, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/12
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.

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