US 10,094,738 B2 · Method for determining angle errors and light-emitting device

Abstract

A method is described for determining angle errors when measuring slewing angles of a pivoted light-deflecting device, including the following steps: emitting a first light beam and a second light beam, which enclose a light beam angle, onto the light-deflecting device; receiving the first light beam and second light beam deflected by the light-deflecting device and reflected by an object; calculating a first propagation path of the first light beam and a second propagation path of the second light beam; pivoting the light-deflecting device from an initial position to a final position, respective slewing angles of the light-deflecting device being measured in the process and a dependency of the first propagation path on the measured slewing angles being determined; and calculating an angle error for a measured slewing angle to be corrected from the set of measured slewing angles by using the light beam angle, the second propagation path and the dependency of the first propagation path on the measured slewing angle.

Claims10

Dependent claims

A method comprising:

emitting a first light beam and a second light beam that enclose a light beam angle, the first light beam and the second light beam being emitted onto the light-deflecting device;
receiving the first light beam and the second light beam deflected by the light-deflecting device and reflected by an object;
calculating a first propagation path of the first light beam and a second propagation path of the second light beam;
pivoting the light-deflecting device from an initial position to a final position;
measuring respective slewing angles of the light-deflecting device;
determining a dependency of the first propagation path on the measured slewing angles;
and
calculating an angle error for one of the measured slewing angles, which is to be corrected, by using the light beam angle, the second propagation path, and the dependency of the first propagation path on the measured slewing angle.

5 more elements

Dependencies are inferred from the claim text.

Method for determining angle errors and light-emitting device

Life of this patent

Method for determining angle errors and light-emitting device

Life of this patent

Abstract

Claims10