Method for manufacturing a phospor device and lighting apparatus comprising such phosphor device

US9062847B2 · kind B2 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Dirk Berben · Herdecke, DE
• Ulrich Hartwig · Berlin, DE
• Nico Morgenbrod · Berlin, DE

Key dates

• Filing date: Apr 13, 2011
• Grant date: Jun 23, 2015
• Expiry date: Apr 13, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N9/315
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method for manufacturing a phosphor device may include: providing an optical transmitting member having a first end face and a second end face, whereby the optical transmitting member is designed for guiding exciting light entering through the first end face onto a phosphor layer arranged on the second end face, whereby at least a part of the exciting light is being wavelength-converted by the phosphor layer, and whereby the optical transmitting member is further designed for at least partially collecting and guiding the light converted by the phosphor layer; attaching an optically transparent electrode on the second end face of the optical transmitting member; providing a phosphor and a counter-electrode designed for electrophoretic deposition of the phosphor; and depositing a phosphor layer on the optically transparent electrode by means of electrophoretic deposition, thereby using the optically transparent electrode as a coating electrode.