Optoelectronic distance sensor with visible pilot beam
AssigneeCarl-Zeiss-Stiftung
InventorsKarl-Hermann Breyer, Klaus P. Koch
Life of this patent
Estimating the term…
Abstract
The invention is directed to a distance sensor operating in accordance with the triangulation principle. The distance sensor has at least one pilot beam source which makes the imaging beam path of the sensor visible. The imaging beam path is inclined with respect to the measuring beam. A second pilot beam source is provided for the situation wherein the actual measuring beam of the sensor is not in the visible spectral region. A visible pilot beam is then superposed on the measuring beam.
Claims8
An optoelectronic distance sensor for operating on a workpiece in accordance with the triangulation principle, the distance sensor comprising:
- light source means for generating a measuring beam and directing the same onto a workpiece to define a measuring region;
- a position-sensitive photoelectric receiver;
- optical imaging means for imaging said measuring region on said receiver and for defining an imaging beam path inclined to said measuring beam and extending from said measuring region to said receiver;
- and,
- pilot beam means for superposing a pilot beam in the visible spectral range onto said imaging beam path.
An optoelectronic distance sensor for operating on a workpiece in accordance with the triangulation principle, the distance sensor comprising:
- light source means for generating a measuring beam in the non-visible spectral range and for directing said measuring beam onto a workpiece to define a measuring region;
- a position-sensitive photoelectric receiver;
- optical imaging means for imaging said measuring region on said receiver and for defining an imaging beam path inclined to said measuring beam and extending from said measuring region to said receiver;
- first pilot beam means for superposing a first pilot beam in the visible spectral range onto said imaging beam path;
- and,
- second pilot beam means for superposing a second pilot beam in the visible spectral range onto said measuring beam.
Dependencies are inferred from the claim text.