Patent · US Active

Optics of wearable display to increase eye-box

US11061224B2 · kind B2 · utility

0Cited by

1References

5Claims

0Family size

Assignees

Fusao Ishii · US
NTT DOCOMO, INC. · JP

Inventors

Fusao Ishii · Menlo Park, US
Mikiko Nakanishi · Tokyo, JP
Kazuhiko Takahashi · Yokohama, JP
Yuji Aburakawa · Yokohama, JP
Keiichi Murakami · Hachioji, JP

Key dates

Filing date	Dec 14, 2017
Grant date	Jul 13, 2021
Priority date	—
Expiry date	Dec 14, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0178
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.

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