Measuring apparatus and referencing method for a digital laser distance meter, and laser distance meter

US9041918B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Andreas Eisele · Echterdingen, DE
• Bernd Schmidtke · Neumarkt am Wallersee, AT
• Reiner Schnitzer · Reutlingen, DE
• Oliver Wolst · Walzbachtal, DE

Key dates

• Filing date: Dec 17, 2013
• Grant date: May 26, 2015
• Expiry date: Dec 17, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S17/08
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A handheld distance measuring instrument includes a first emission device, a first reception device and a second reception device. The first emission device is configured to emit an optical measurement radiation onto a target object. The first reception device is configured to detect the radiation returning from the target object. The second reception device is configured in order to detect a reference radiation internal to the instrument. The reception devices respectively include a first detector unit, a second detector unit, a first time measurement unit, and a second time measurement unit. The first time measurement unit is configured to be connected selectively to the first detector unit and to the second detector unit. The second time measurement unit is configured to be connected selectively to the first detector unit and to the second detector unit.