Device for the optical measurement of the distance from a reflecting or scattering target object

Patent metadata

Field	Value
Publication number	US-9791566-B2
Application number	US-201414779880-A
Country	US
Kind code	B2
Filing date	Mar 25, 2014
Priority date	Mar 28, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A device for the optical measurement of a distance from a reflecting or scattering target object is disclosed. The device has a distance measurement device and an adjusting device arranged outside of the distance measurement device having a second transmission optical unit adjustable between a first and second position for forming the laser light into a beam, where in the first position, the second transmission optical unit is arranged in the laser beam, and in the second position, it is arranged outside of the laser beam.

First claim

The invention claimed is:

1. An apparatus for optical measurement of a distance from a reflecting or scattering target object, comprising:
a distance measurement device, wherein the distance measurement device includes:
a beam source, wherein the beam source is a first electro-optical component and emits a laser beam;
a detector, wherein the detector is a second electro-optical component and receives a reception beam reflected or scattered at the target object; and
a first beam-shaping system with a first transmission optical unit for shaping the laser beam and a first reception optical unit for shaping the reception beam; and

an adjustment device disposed outside of the distance measurement device with a second transmission optical unit displaceable between a first position and a second position for shaping the laser beam;
wherein in the first position the second transmission optical unit is disposed in the laser beam;
wherein in the second position the second transmission optical unit is disposed outside of the laser beam;
wherein the first transmission optical unit is a collimation optical unit and wherein the second transmission optical unit is a scattering optical unit.

2. The apparatus according to claim 1 , wherein the distance measurement device has an optics carrier with a first mounting receptacle for attaching the first electro-optical component and a second mounting receptacle for attaching the first beam-shaping system.

3. The apparatus according to claim 2 , wherein the distance measurement device has a circuit board with a mounting receptacle for attaching the second electro-optical component and a connection device that connects the circuit board to the optics carrier.

4. The apparatus according to claim 1 , wherein the adjustment device has a plurality of second transmission optical units, wherein the plurality of second transmission optical units are scattering optical units with various expansion properties.

5. The apparatus according to claim 4 , wherein the adjustment device is an optics wheel that is displaceable about a rotation axis.

6. The apparatus according to claim 4 , wherein the adjustment device is an optics slider that is displaceable along a translation axis.

7. The apparatus according to claim 1 , wherein the adjustment device has a second reception optical unit displaceable between a first position and a second position for shaping the reception beam;
wherein in the first position the second reception optical unit is disposed in the reception beam;
and wherein in the second position the second reception optical unit is disposed outside of the reception beam.

8. The apparatus according to claim 7 , wherein the first reception optical unit is a focusing optical unit and wherein the second reception optical unit is a diffusing lens.

9. The apparatus according to claim 8 , wherein the adjustment device has a plurality of second reception optical units, wherein the plurality of second reception optical units are diffusing lenses with various properties.

Assignees

• Hilti Ag

Inventors

• Winter Andreas
• Gogolla Torsten
• Eyrich Petra

Classifications

• G01S7/481

  Constructional features, e.g. arrangements of optical elements · CPC title

• G02B27/40

  Optical focusing aids · CPC title

• G02B19/0076

  for use with a detector (G02B19/009, G02B19/0095 take precedence) · CPC title

• G02B19/0047

  for use with a light source (G02B19/009, G02B19/0095 take precedence; details of lighting devices in general F21V; non-semiconductor lasers having optical devices external to the laser cavity H01S3/005) · CPC title

• G02B7/16

  Rotatable turrets · CPC title