Optical system for shaping a laser beam and laser system having such an optical system

• US 9,568,311 B2
• Filed: 12/21/2011
• Issued: 02/14/2017
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Dang, Lieu-Kim, Wuersch, Christoph
• Primary Examiner(s): Sugarman, Scott J
• Application Number:
  US13/333,613
• Publication Number:
  US 20120327662A1
• Time in Patent Office: 1,882 Days
• Field of Search: 359629-640, 359/725
• US Class Current: 1/1
• CPC Class Codes: G01C 15/004 Reference lines, planes or sectors
• CPC Class Codes: G02B 19/0028 refractive and reflective surfaces, e.g. non-imaging catadioptric systems
• CPC Class Codes: G02B 19/0052 the light source comprising a laser diode coupling into light guides using intermediate optical elements G02B6/4204; semiconductor lasers having optical devices external to the laser cavity H01S5/005
• CPC Class Codes: G02B 27/0927 Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
• CPC Class Codes: G02B 27/0944 Diffractive optical elements, e.g. gratings, holograms gratings per se G02B5/18; holograms used as optical elements per se G02B5/32
• CPC Class Codes: G02B 27/095 Refractive optical elements
• CPC Class Codes: G02B 27/0977 Reflective elements

Abstract

An optical system for shaping a laser beam is disclosed. The system includes a first optical element that has a lateral surface which is designed as a reflecting surface for the laser beam, where the lateral surface reshapes the laser beam at least in some segments thereof into a ring-shaped laser beam. The at least segmentally ring-shaped laser beam propagates in a propagation plane. A further optical element is provided for shaping the ring-shaped laser beam that shapes the ring-shaped laser beam at least in some segments thereof in a plane parallel to the propagation plane of the laser beam.

Claims

1. An optical system for shaping a laser beam, comprising:

a first optical element including a lateral surface, wherein the lateral surface includes a reflecting surface for the laser beam and wherein the laser beam is re-shapeable in at least in some sections thereof into a ring-shaped laser beam that is propagatable in a propagation plane by the lateral surface; and

a second optical element, wherein the ring-shaped laser beam is shapeable at least in some segments thereof in a plane parallel to the propagation plane by the second optical element.

2. The optical system according to claim 1, wherein the second optical element is integrated into the lateral surface of the first optical element or directly abuts the lateral surface.

3. The optical system according to claim 1, wherein the second optical element includes a lateral surface and wherein the lateral surface of the second optical element abuts the lateral surface of the first optical element.

4. The optical system according to claim 1, further comprising a third optical element including an interface, wherein the second optical element is integrated into the interface or directly abuts the interface.

5. The optical system according to claim 1, further comprising a third optical element integrated into an interface or directly abutting an interface.

6. The optical system according to claim 1, wherein the second optical element is a diffractive optical element.

7. The optical system according to claim 1, wherein the second optical element is a ground optical element.

8. The optical system according to claim 1, wherein the first optical element includes a base member with a lower base, an upper base, and a lateral surface abutting the lower base and the upper base, wherein the lower base and the lateral surface include a transmitting surface for the laser beam, and wherein the base member includes a first cutout portion with a base arranged in the upper base of the base member.

9. The optical system according to claim 8, wherein the base member includes a second cutout portion including a lower base arranged in the lower base of the base member, an upper base including a transmitting surface for the laser beam, and a lateral surface abutting the lower base and the upper base of the second cutout portion, wherein the lateral surface includes a second reflecting surface for the laser beam.

10. The optical system according to claim 8, wherein the first cutout portion includes an upper base parallel to the base of the first cutout portion, wherein the upper base includes a transmitting surface for the laser beam.

11. A laser system, comprising:

a beam source, wherein a laser beam is generatable by the beam source; and

an optical system according to claim 1.

12. The laser system according to claim 11, further comprising an adjustment device, wherein a position of the beam source relative to the optical system and/or a position of the optical system relative to the beam source is adjustable in a propagation direction of the laser beam and/or in a plane perpendicular to the propagation direction of the laser beam by the adjustment device.

13. The laser system according to claim 11, further comprising a second optical system, wherein a segmentally ring-shaped laser beam and a spot-shaped laser beam are generatable by the second optical system, and a third optical system, wherein a segmentally ring-shaped laser beam and a spot-shaped laser beam are generatable by the third optical system.

14. An optical system for shaping a laser beam, comprising:

a first optical element including a lateral surface, wherein the lateral surface includes a reflecting surface for the laser beam and wherein the laser beam is re-shapeable in at least in some sections thereof into a ring-shaped laser beam by the lateral surface; and

a second optical element, wherein the ring-shaped laser beam is shapeable at least in some segments thereof in a plane parallel to a propagation plane of the ring-shaped laser beam by the second optical element.