Patent · US Active

Light source for projection display

US11231529B2 · kind B2 · utility

0Cited by

0References

10Claims

0Family size

Assignees

FUSHO ISHII · US
NTT DOCOMO, INC. · JP

Inventors

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

Key dates

Filing date	Jan 19, 2019
Grant date	Jan 25, 2022
Priority date	—
Expiry date	Jun 20, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG03B21/208
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A compact integrator of light beams is disclosed using a diffractive optical element to integrate multiple beams into a single beam regardless of wavelength or polarization.

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