Patent · US Active

Method of making a single crystal wavelength conversion element, single crystal wavelength conversion element, and light source containing same

US10472735B2 · kind B2 · utility

1Cited by

1References

13Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

John F. Kelso · Exeter, US
Alan Piquette · Kensington, US
David W. Johnston · Kensington, US

Key dates

Filing date	Apr 28, 2016
Grant date	Nov 12, 2019
Priority date	—
Expiry date	Apr 28, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/0361
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

There is herein described a method of making a single crystal wavelength conversion element from a polycrystalline wavelength conversion element, a single crystal wavelength conversion element, and a light source containing same. By making the single crystal wavelength conversion element from a polycrystalline wavelength conversion element, the method provides greater flexibility in creating single crystal wavelength conversion elements as compared to melt grown methods for forming single crystals. Advantages may include higher activator contents, forming more complex shapes without machining, providing a wider range of possible activator gradients and higher growth rates at lower temperatures.

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