Distance-measuring device alignment

1. An adjustment method for an optoelectronic distance meter, which comprises:

a module having

a radiation source for emitting optical emission radiation,

a detector for receiving optical reception radiation, and

a printed circuit board, which are arranged in a rigid spatial relation to one another, and

an optics carrier having

emission optics and

reception optics,

an emission direction being defined by the radiation source and the emission optics, and a reception direction being defined by the detector and the reception optics, and the emission optics and the reception optics having different focal lengths,

the adjustment method comprising:

establishing a desired orientation of the emission direction relative to the reception direction; and

displacing the entire module relative to the optics carrier, the displacement causing displacement-induced direction angle changes of the emission direction and the reception direction by a lever action of the different focal lengths of respectively different size, so that the orientation of the emission direction relative to the reception direction is varied.

2. The adjustment method as claimed in claim 1 , wherein a first angular orientation of the emission direction with respect to the reception direction is adjusted by the displacement in a first lateral direction.

3. The adjustment method as claimed in claim 1 , wherein a second angular orientation of the emission direction with respect to the reception direction is adjusted by the displacement in a second lateral direction.

4. The adjustment method as claimed in claim 3 , wherein the first angular orientation and second angular orientation are orthogonal to one another.

5. The adjustment method as claimed in claim 1 , wherein a second angular orientation of the emission direction with respect to the reception direction is adjusted by the displacement in a second lateral direction with the first and second lateral directions and the first and second angular orientations respectively being independent of one another.

6. The adjustment method as claimed in claim 3 , wherein the reception direction is varied, and the emission direction remains unchanged, by the displacement in the second lateral direction.

7. The adjustment method as claimed in claim 1 , wherein bearing on a common support surface of the optics carrier and the module defines the direction of the lateral displacement.

8. The adjustment method as claimed in claim 1 , wherein the position of the emission optics relative to the reception optics orthogonally to their optical axis remains unchanged during the adjustment.

9. The adjustment method as claimed in claim 1 , wherein the position of the emission optics relative to the reception optics orthogonally to their optical axis remains unchanged during the adjustment, with the emission optics and/or the reception optics being displaced axially at most only for correction of focusing.

10. The adjustment method as claimed in claim 1 , wherein the position of the reception optics in the optics carrier is already definitively fixed before the adjustment.

11. The adjustment method as claimed in claim 1 , wherein before the adjustment, the position of the emission optics in the optics carrier is precollimated into a prefocus setting, in which a divergence of the emission radiation emitted by the distance meter is greater than that of optimal collimation.

12. The adjustment method as claimed in claim 1 , wherein before the adjustment, the position of the emission optics in the optics carrier is precollimated into a prefocus setting, in which a divergence of the emission radiation emitted by the distance meter is greater than that of optimal collimation, the focus setting being achievable from the prefocus setting by displacement of the emission optics in a tubular recess of the optics carrier.

13. The adjustment method as claimed in claim 11 , wherein maintenance of the precollimated prefocus setting of the emission optics during the adjustment by joint displacement of the emission optics with the module in the focus direction of the emission optics.

14. The adjustment method as claimed in claim 1 , wherein after the adjustment and fixing of the module relative to the optics carrier, collimation of the emission optics in the focus setting direction is carried out in order to adjust a desired divergence of the emission beam path.

15. The adjustment method as claimed in claim 1 , wherein after the adjustment and fixing of the module relative to the optics carrier, collimation of the emission optics in the focus setting direction is carried out in order to adjust a desired divergence of the emission beam path by pressing the emission optics into a tubular recess of the optics carrier.

16. The adjustment method as claimed in claim 12 , wherein before the precollimation, positioning of the module relative to the optics carrier is carried out in a position from which the module can be displaced only in the direction of decollimation of the emission optics or orthogonally thereto.

17. The adjustment method as claimed in claim 1 , wherein the emission optics and/or the reception optics comprise a deviating mirror.

18. The adjustment method as claimed in claim 1 , wherein the desired orientation of the emission direction relative to the reception direction is defined in that the emission direction and the reception direction at least approximately have a common point of intersection at a predetermined distance.

19. An optoelectronic distance meter comprising:

a printed circuit board, an optical radiation source and an optical detector, which are positioned and oriented immovably with respect to one another as a common module,

an optics carrier having emission optics and reception optics with a respectively different focal length, with the emission optics and the reception optics being displaceable with respect to one another only in the direction of their respective optical axes, and

an electronic evaluation unit with which a distance from the distance meter to a target object can be determined on the basis of a signal time of flight with the aid of a digitized reception signal of the detector,

wherein the optoelectronic distance meter is adjusted by

establishing a desired orientation of the emission direction relative to the reception direction; and

displacing the entire module relative to the optics carrier, the displacement causing displacement-induced direction angle changes of the emission direction and the reception direction by a lever action of the different focal lengths of respectively different size, so that the orientation of the emission direction relative to the reception direction is varied.

20. The optoelectronic distance meter as claimed in claim 19 , wherein:

the radiation source emits parallel to a surface of the printed circuit board in the direction of the emission optics,

the detector has a photosensitive region lying parallel to the printed circuit board,

and light from the reception optics is directed by means of a deviating mirror onto the detector, and

the module is displaceable relative to the optics carrier in a first direction and a second direction, and bears on a mechanical stop in a third direction, with the emission optics being pressable into a tubular recess of the optics carrier, axially with respect to the optical axis of the emission optics, in order to collimate radiation emitted by the optical radiation source.