Fiber-optic pressure sensor

US6820488B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Thomas Lenzing · Memmingen, DE
• Uwe Konzelmann · Asperg, DE

Key dates

• Filing date: Jun 10, 2003
• Grant date: Nov 23, 2004
• Expiry date: Jun 11, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L9/0077
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fiber-optic pressure sensor having a pressure measuring head including a housing which accommodates a diaphragm functioning as a pressure transducer and completing a translational movement under applied pressure and including at least one optical waveguide, the face of which is directed to the inside surface of the diaphragm and via which the light emitted by a light source is introduced into the pressure measuring head, the inside diaphragm surface having a pattern of highly reflective areas and areas of low reflectivity.