Patent · US Active

Phosphor wheel having a balancing piece

US11402625B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

MATERION PRECISION OPTICS (SHANGHAI) LIMITED · CN

Inventors

Carter Ni · Shanghai, CN
James Li · Pittsford, US

Key dates

Filing date	Jun 29, 2017
Grant date	Aug 2, 2022
Priority date	—
Expiry date	Nov 19, 2037

Classification

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

Abstract

A phosphor wheel (300, 400, 500, 600) includes an annular disc (310, 410, 510, 610) having phosphor segments (320, 420, 522, 524, 620) and an exposed annular sector (305, 405, 505, 605), a hub (330, 430, 530, 630) coupled to the inner perimeter (304, 413) of the annular disc, and a balancing piece (340, 440, 540, 640) located between the hub and the exposed annular sector. The balancing piece minimizes the initial imbalance of the phosphor wheel about the center (301, 441, 541) of the disc due to the exposed annular sector by making up the difference in torque. A method for making a phosphor wheel, a projector comprising a phosphor wheel, and a method for minimizing imbalance in a phosphor wheel.

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