Surveying instrument

Patent metadata

Field	Value
Publication number	US-2016202058-A1
Application number	US-201514982334-A
Country	US
Kind code	A1
Filing date	Dec 29, 2015
Priority date	Jan 13, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

A technique for more smoothly moving a reflective prism to a target position is provided. A surveying instrument 100 includes a leg part 101, a base 102 supported by the leg part 101, a movable part 112 held by the base 102 and being movable straight in any direction within a two-dimensional plane relative to the base 102, a reflective prism 113 mounted on the movable part 112, and a laser pointer 114 that is mounted to the movable part 112 and that emits a guiding light in a vertical direction.

First claim

What is claimed is:

1 . A surveying instrument comprising:
a leg part; a base supported by the leg part; a movable part held by the base and being movable straight in any direction within a two-dimensional plane relative to the base; a reflective prism mounted on the movable part; and a guiding light emitting part that is mounted to the movable part and that emits a guiding light in a vertical direction.

2 . The surveying instrument according to claim 1 , wherein the leg part is a tripod, and two legs of the tripod are extendable.

3 . The surveying instrument according to claim 1 , wherein the base is arranged with a first guide and a second guide, which are movable independently with each other relative to the base and cross each other, and the movable part engages with the first guide and the second guide at a portion, at which the first guide and the second guide cross each other, so as to be simultaneously movable relative to the first guide and the second guide.

4 . The surveying instrument according to claim 3 , wherein the first guide is mounted on the base in a condition in which the first guide is movable in a first direction, and the second guide is mounted on the base in a condition in which the second guide is movable in a second direction which orthogonally crosses the first direction.

5 . The surveying instrument according to claim 3 , wherein the first guide is pivotably mounted at a first portion of the base, and the second guide is pivotably mounted at a second portion of the base, which is different from the first portion.

6 . The surveying instrument according to claim 4 , further comprising:
a first driving source configured to move the first guide relative to the base; a second driving source configured to move the second guide relative to the base; and a controlling part configured to control movements of the first driving source and the second driving source.

7 . The surveying instrument according to claim 6 , wherein the controlling part controls movement of the movable part based on data relating to positional change of the movable part when the first driving source is driven and based on data relating to positional change of the movable part when the second driving source is driven.

8 . The surveying instrument according to claim 2 , wherein the base is arranged with a first guide and a second guide, which are movable independently with each other relative to the base and cross each other, and the movable part engages with the first guide and the second guide at a portion, at which the first guide and the second guide cross each other, so as to be simultaneously movable relative to the first guide and the second guide.

9 . The surveying instrument according to claim 5 , further comprising:
a first driving source configured to move the first guide relative to the base; a second driving source configured to move the second guide relative to the base; and a controlling part configured to control movements of the first driving source and the second driving source.

Assignees

• Topcon Corp

Inventors

• Nagashima Terukazu
• Hayase Shin-Ichi
• Shoji Atsushi

Classifications

• G01C15/004 Primary

  Reference lines, planes or sectors · CPC title

• B25J9/023

  Cartesian coordinate type · CPC title

• G01C15/08 Primary

  Plumbing or registering staffs or markers over ground marks · CPC title