Optical instrument having a stabilization element for mounting and adjusting an optical assembly in a holder, and mounting method for the stabilization element

Patent metadata

Field	Value
Publication number	US-9429733-B2
Application number	US-201113823212-A
Country	US
Kind code	B2
Filing date	Sep 20, 2011
Priority date	Sep 22, 2010
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

An optical instrument for measuring has an a stabilization component for stably connecting an optical assembly and holder to at least one stabilization element that can be compressed in the gap. The stabilization element has, in an unmounted state, a thickness which is greater than the width of the gap, and the optical assembly, the holder and the stabilization component are configured and cooperate such that the stabilization element, which is positioned between optical assembly and holder, in a roughly positioned state, is compressed, by way of inserting the optical assembly into the holder, into the gap and is plastically deformed in the gap such that elastic forces act radially with respect to the optical axis between assembly and holder and the assembly and the holder are disposed in the radial direction in a stabilized state with respect to one another.

First claim

What is claimed is:

1. A geodetic apparatus for surveying, comprising:
an optical assembly having at least one optical element which defines an optical axis;
a holder for the optical assembly, the holder having a shape which is suitable for at least approximately accommodating the optical assembly, in an inserted state the optical assembly is inserted within the holder with a gap with a defined width between the optical assembly and the holder; and
a stabilization component for tolerance compensation and for stable connection of the optical assembly and the holder, having at least one stabilization element which can be compressed in the gap in the inserted state, wherein:
the stabilization element in an unmounted state has a thickness which is greater than the width of the gap,
the optical assembly, the holder and the stabilization component are formed in such a way and interact in such a way that in an approximately positioned state of the stabilization component, by inserting the optical assembly into the holder, the stabilization element positioned between the optical assembly and the optical holder is compressed in the gap and is plastically deformed in the gap in such a way that residual elastic forces act radially with respect to the optical sighting axis between the assembly and the holder, and the assembly and the holder are stabilized with respect to one another in the radial direction,
the stabilization element comprises a deformation zone, and the stabilization element comprises a material having homogeneous plastic properties; and
the stabilization component comprises a standalone component that is separate from the optical assembly and the holder.

2. The geodetic apparatus as claimed in claim 1 , wherein the number of stabilization elements and the residual elastic forces therefore acting perpendicularly to the optical axis are selected in such a way that, in an adjustment state, the angular setting of the optical assembly with respect to the holder can be aligned with high precision.

3. The geodetic apparatus as claimed in claim 1 , wherein the number of stabilization elements and the residual elastic forces therefore acting perpendicularly to the optical axis are selected in such a way that, in an adjustment state, the angular setting of the optical assembly with respect to the holder can be aligned with high precision by a sliding rotation movement, and/or the optical assembly can be axially adjusted with respect to the holder, the stabilization elements being plastically deformed.

4. The geodetic apparatus as claimed in claim 1 , wherein by fixing in a finally mounted state, the optical assembly and the holder are retained in the high-precision alignment.

5. The geodetic apparatus as claimed in claim 1 , wherein at least three stabilization elements are arranged on a stabilization component.

6. The geodetic apparatus as claimed in claim 1 , wherein the stabilization component has a frame.

7. The geodetic apparatus as claimed in claim 1 , wherein the stabilization component is annular and the stabilization elements are arranged uniformly distributed over the stabilization component and aligned in the axial direction.

8. The geodetic apparatus as claimed in claim 1 , wherein the stabilization element consists of a material with a homogeneous plastic flow range.

9. The geodetic apparatus as claimed in claim 1 , wherein the optical instrument is configured a total station, and the optical assembly is configured as a telescope objective.

10. The geodetic apparatus as claimed in claim 1 , wherein the stabilization element has an essentially constant maximum material stress within a material stress range above an elastic limit with varying material strain and in the approximately positioned state is in a loading state above the elastic limit.

11. The geodetic apparatus as claimed in claim 1 , wherein the stabilization element consists of a particular manufacturing material having a defined stress/strain gradient within a plastic range of a stress/strain curve representing a stress/strain property of the manufacturing material, in particular with the stress/strain gradient being defined by a slope of between −1000 MPa/(m/m) and +1000 MPa/(m/m).

12. The geodetic apparatus as claimed in claim 1 , wherein the stabilization element consists of a particular manufacturing material having a defined stress/strain gradient within a plastic range of a stress/strain curve representing a stress/strain property of the manufacturing material with the stress/strain gradient being defined by a slope of between −250 MPa and +250 MPa, of the stress/strain curve for the manufacturing material.

13. The geodetic apparatus as claimed in claim 1 , wherein the stabilization element consists of a particular manufacturing material having a defined stress/strain gradient within a plastic range of a stress/strain curve representing a stress/strain property of the manufacturing material with the stress/strain gradient being defined by a slope of between −250 MPa and +250 MPa, of the stress/strain curve for the manufacturing material with the manufacturing material having a material stress value of between 5 MPa and 1000 MPa within the plastic range with the stabilization element being plastically deformable with an essentially constant material strength within the plastic range.

14. The geodetic apparatus as claimed in claim 1 , wherein the at least one optical element includes a lens.

15. A stabilization component for the precisely positioned mounting of an optical assembly having a defined optical axis in a holder in a geodetic apparatus as claimed in claim 1 , having at least one stabilization element which can be compressed in the gap, wherein:
the stabilization element in an unmounted state has a thickness which is greater than the width of the gap; and
the optical assembly, the holder, and the stabilization component are formed in such a way and interact in such a way that in an approximately positioned state, by inserting the optical assembly into the holder, the stabilization element positioned between the optical assembly and the holder is compressed in the gap and is plastically deformed in the gap in such a way that residual elastic forces act radially with respect to the optical axis between the assembly and the holder and the assembly and the holder are stabilized with respect to one another in the radial direction, and
the stabilization element has a deformation zone, and the stabilization element comprises a material having homogeneous plastic properties.

16. A mounting method for the precisely positioned mounting of an optical assembly of a geodetic apparatus, the optical assembly having a defined optical axis in a holder, there being a gap with a defined width between the assembly and the holder in the assembled state, with a stabilization component, the stabilization component comprising a standalone component that is separate from the optical assembly and the holder, with at least one stabilization element, the stabilization element having a deformation zone, and the stabilization element comprising a material having homogeneous plastic properties, which can be compressed in the gap, and the method comprising:
approximate positioning of the optical assembly and the holder with respect to one another and placement of a stabilization component between the assembly and the holder;
compression of the stabilization element between the assembly and the holder, so that the stabilization element is deformed within a homogeneous plastic range and residual elastic forces act radially with respect to the optical

Assignees

• Iseli Claudio
• Scheja Jochen
• Hexagon Technology Ct Gmbh

Inventors

• Iseli Claudio
• Scheja Jochen

Classifications

• G02B7/026

  using retaining rings or springs (G02B7/027 takes precedence) · CPC title

• G02B7/02 Primary

  for lenses {(supports for magnifying lenses G02B25/002)} · CPC title

• G02B7/023 Primary

  permitting adjustment · CPC title