Patent · US Expired

Device for optical distance measurement of distance over a large measuring range

US6833909B2 · kind B2 · utility

13Cited by

4References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Dierk Schmidt · Sindelfingen, DE
Joerg Stierle · Waldenbuch, DE
Peter Wolf · Wiesbaden, DE
Gunter Flinspach · Leonberg, DE

Key dates

Filing date	Feb 4, 2003
Grant date	Dec 21, 2004
Priority date	—
Expiry date	Feb 4, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01S17/32
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a device for optical distance measurement, having a emitter unit (12) having a light source (17, 18) emitting modulated optical beam (13, 20, 22) to a target object (15), and having a receiver unit (14), spaced apart from the optical axis (38) of the emitter unit (12) with at least one optical detector (54) for receiving the optical beam (16, 49, 50) returning from the target object (15), and having a control and evaluation unit (36) for ascertaining the distance (48) of the device from the target object (15).It is proposed that the active, light-sensitive face (66, 67, 68, 69) of the detector (54) of the receiver unit (14) narrows in the direction (61) of a beam displacement for decreasing target object distances (48) that is due to the parallax of the returning beam (16).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.