Surveying device and surveying system

• US 7,965,383 B2
• Filed: 03/20/2009
• Issued: 06/21/2011
• Est. Priority Date: 03/26/2008
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Topcon
• Original Assignee: Kabushiki Kaisha Topcon
• Inventors: Ohtomo, Fumio, Hayashi, Kunihiro, Kumagai, Kaoru
• Primary Examiner(s): ALSOMIRI, ISAM A
• Application Number:
  US12/383,129
• Publication Number:
  US 20090241359A1
• Time in Patent Office: 823 Days
• Field of Search: 356/4.01, 356/5.01, 356/141.1, 702/159
• US Class Current: 356/4.01
• CPC Class Codes: G01C 15/004 Reference lines, planes or sectors
• CPC Class Codes: G01S 17/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S17/46
• CPC Class Codes: G01S 7/4817 relating to scanning

Abstract

The present invention provides a surveying device, which comprises a light source for emitting a distance measuring light 6, an elevation rotary mirror 56 for deflecting said distance measuring light in a direction toward an object to be measured, a high-speed deflection mirror 62 for deflecting said distance measuring light at a speed higher than said elevation rotary mirror, a distance measuring light projecting unit for projecting said distance measuring light, and an arithmetic control unit for controlling driving of said high-speed deflection mirror and said elevation rotary mirror.

Claims

1. A surveying device, comprising a light source for emitting a distance measuring light, an elevation rotary mirror for deflecting said distance measuring light in a direction toward an object to be measured and for rotating in an elevation direction, a high-speed deflection mirror for deflecting said distance measuring light at a speed higher than said elevation rotary mirror and for giving an amplitude in elevation direction to said distance measuring light, a distance measuring light projecting unit for projecting said distance measuring light, and an arithmetic control unit for controlling driving of said high-speed deflection mirror and said elevation rotary mirror.

2. A surveying device according to claim 1, wherein said high-speed deflection mirror is disposed on an optical axis passing portion of the elevation rotary mirror, said distance measuring light is projected via said high-speed deflection mirror, and the reflected distance measuring light reflected by the object to be measured is received via a condensing member.

3. A surveying device according to claim 1, wherein said high-speed deflection mirror is disposed on one surface of said elevation rotary mirror, and the other surface of said elevation rotary mirror is used as a reflection mirror.

4. A surveying device according to claim 1, wherein a mirror surface of said elevation rotary mirror is arranged by using a mirror surface of said high-speed deflection mirror, and said elevation rotary mirror deflects said distance measuring light in a direction of the object to be measured by a driving unit for driving a holding unit for holding said high-speed deflection mirror.

5. A surveying device according to claim 1, wherein said distance measuring light projecting unit comprises a rotator for projecting the distance measuring light in rotary irradiation, an image rotator, and an image rotator rotating unit for rotating said image rotator, and wherein said rotator can be adjusted by said image rotator rotating unit so that a deflecting direction of said distance measuring light reflected by said high-speed deflection mirror is directed in a direction toward the object to be measured.

6. A surveying device according to claim 1, wherein said distance measuring light projecting unit has an elevation rotary mirror for deflecting the distance measuring light in a direction toward the object to be measured, wherein two of said high-speed deflection mirrors are disposed at positions opposite to each other, and wherein said high-speed deflection mirrors have reflection surfaces with different moving directions, and the deflecting direction of the distance measuring light projected via said two high-speed deflection mirror can be adjusted so that it is directed toward the object to be measured.

7. A surveying device according to claim 5 or 6, wherein said distance measuring light is projected with a deflection range in elevation direction extended by a deflection range extending member, and the reflected distance measuring light reflected by said object to be measured is received via a condensing member.

8. A surveying device according to claim 1, further comprising a fan-shaped beam projecting unit for projecting two or more fan-shaped beams with at least one of the fan-shaped beams being tilted, a fan-shaped beam receiving unit for receiving the reflected fan-shaped beam reflected from the object to be measured, and a fan-shaped beam projecting direction detecting unit for detecting a fan-shaped beam projecting direction of said fan-shaped beam projecting unit, wherein said arithmetic control unit calculates a direction of the object to be measured based on signal from said fan-shaped beam receiving unit and from said fan-shaped beam projecting direction detecting unit.

9. A surveying device according to claim 5, wherein said arithmetic control unit controls said high-speed deflection mirror and said rotating unit so that the projected distance measuring light is projected to said object to be measured based on the acquired direction of the object to be measured.

10. A surveying device according to one of claims 1, and 2 to 6, wherein said high-speed deflection mirror is a MEMS mirror.

11. A surveying system, comprising a surveying device and an object to be measured, wherein said surveying device comprises a distance measuring light projecting unit for projecting a distance measuring light, which has a light source for emitting said distance measuring light, an elevation rotary mirror for deflecting said distance measuring light in a direction toward said object to be measured and for rotating in an elevation direction, and a high-speed deflection mirror for deflecting said distance measuring light at a speed higher than said elevation rotary mirror and for giving an amplitude in elevation direction to said distance measuring light,

a projecting direction detecting unit for detecting a projecting direction of the distance measuring light from said distance measuring light projecting unit,

a distance measuring unit for measuring a distance based on a reflection light from the object to be measured,

a fan-shaped beam projecting unit for projecting two or more fan-shaped beams, with at least of one of the fan-shaped beams being tilted, in rotary irradiation,

a first communication unit,

and an arithmetic control unit for controlling a driving of said elevation rotary mirror and said high speed deflecting mirror,

and wherein said object to be measured has a reflector for reflecting said distance measuring light,

a fan-shaped beam receiving unit for receiving the fan-shaped beams,

and a second communication unit for transmitting a signal from said fan-shaped beam receiving unit to said first communication unit.

12. A surveying system according to claim 11, wherein said high-speed deflection mirror is disposed on an optical axis passing portion of the elevation rotary mirror, said distance measuring light is projected via said high-speed deflection mirror, and the reflected distance measuring light reflected by the object to be measured is received via a condensing member.

13. A surveying system according to claim 11, wherein said high-speed deflection mirror is disposed on one surface of said elevation rotary mirror, and the other surface of said elevation rotary mirror is used as a reflection mirror.

14. A surveying system according to claim 11, wherein said distance measuring light projecting unit comprises a rotator for projecting the distance measuring light in rotary irradiation, an image rotator, and an image rotator rotating unit for rotating said image rotator, wherein said rotator can be adjusted by said image rotator rotating unit so that deflecting direction of said distance measuring light reflected by said high-speed deflection mirror is directed in a direction toward the object to be measured.

15. A surveying system according to claim 11, wherein said distance measuring light projecting unit has an elevation rotary mirror for deflecting the distance measuring light in a direction toward the object to be measured, wherein two of said high-speed deflection mirrors are disposed at positions opposite to each other, and wherein said high-speed deflection mirrors have reflection surfaces with different moving directions, and the deflecting direction of the distance measuring light projected via said two high-speed deflection mirror can be adjusted so that it is directed toward the object to be measured.

16. A surveying system according to claim 14 or 15, wherein said distance measuring light is projected with a deflection range in elevation direction extended by a deflection range extending member, and wherein the reflected distance measuring light reflected by said object to be measured is received via a condensing member.