Luminescent-substance mixture, light-emitting semiconductor component having a luminescent-substance mixture, and streetlamp having a luminescent-substance mixture

US10190046B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Rebecca Römer · Regensburg, DE
• Barbara Huckenbeck · Augsburg, DE
• Stefan Lange · Shepperton, GB
• Hailing Cui · Regensburg, DE

Key dates

• Filing date: Nov 18, 2014
• Grant date: Jan 29, 2019
• Expiry date: Jun 28, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F21Y2115/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A luminescent material mixture has a first luminescent material and a second luminescent material, wherein, under excitation with blue light, an emission spectrum of the first luminescent material has a relative intensity maximum in a yellowish-green region of the spectrum at a wavelength of greater than or equal to 540 nm and less than or equal to 560 nm and an emission spectrum of the second luminescent material has a relative intensity maximum in an orange-red region of the spectrum at a wavelength of greater than or equal to 600 nm and less than or equal to 620 nm.