Laser distance measuring device

US7075626B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dierk Schmidt · Sindelfingen, DE
• Joerg Stierle · Waldenbuch, DE
• Peter Wolf · Wiesbaden, DE

Key dates

• Filing date: Dec 5, 2002
• Grant date: Jul 11, 2006
• Expiry date: Jun 6, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/4911
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention is based on a laser range finder that has a transmitter unit (10) with at least one laser, a receiver unit (12), and a single sideband modulation unit (14) that can use a first single sideband modulation frequency (ZF1) generated by an oscillator unit (16) and a carrier frequency (T1) to generate a modulation frequency (S1) of the transmitter unit (10).According to the invention, the oscillator unit (16) can generate at least one additional frequency (ZF2) and the single sideband modulation unit (14) can use the additional frequency (ZF2) to generate a demodulation frequency (S2) of the receiver unit (12).