Patent · US Active

Combination wheel for light conversion including both phosphor segments and color filters

US11448950B2 · kind B2 · utility

1Cited by

20References

20Claims

0Family size

Assignee

MATERION PRECISION OPTICS (SHANGHAI) LIMITED · CN

Inventors

Shengyuan Bai · Shanghai, CN
James Li · Pittsford, US
David Zhang · Elmont, US

Key dates

Filing date	Apr 10, 2017
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Apr 10, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG03B33/08
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A combination wheel is disclosed, which comprises a color filter, a reflective substrate coaxially aligned with and on a surface of the color filter, light-emitting phosphor segments of different colors on the reflective substrate, and a diffuser segment. When used with a blue laser generator and a series of a dichroic filters and mirrors, the combination wheel tunes and convert lights to be collected by a subsequent optical system.

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