Surveying instrument
AssigneePentax Precision Co., Ltd.
InventorKenji Kaneko
Life of this patent
Estimating the term…
Abstract
A surveying instrument includes a surveying instrument body rotatable about each of a vertical axis and a horizontal axis; and a first collimator optical system and a second collimator optical system each of which is positioned in the surveying instrument body to collimate the surveying instrument relative to a survey point, a viewing angle of the second collimator optical system being greater than a viewing angle of the first collimator optical system. A first collimating operation is performed with the first collimator optical system after a second collimating operation is performed with the second collimator optical system.
Claims10
A surveying instrument comprising:
- a surveying instrument body rotatable about each of a vertical axis and a horizontal axis;
- and
- a first collimator optical system and a second collimator optical system each of which is positioned in said surveying instrument body to collimate said surveying instrument relative to a survey point, a viewing angle of said second collimator optical system being smaller than a viewing angle of said first collimator optical system,
- wherein a first collimating operation is performed with said first collimator optical system after a second collimating operation is performed with said second collimator optical system.
A surveying instrument comprising:
- a surveying instrument body rotatable about each of a vertical axis and a horizontal axis;
- and
- a collimator optical system which is positioned in said surveying instrument body to collimate said surveying instrument relative to a survey point,
- wherein said collimator optical system comprises a zoom mechanism for varying a focal length of said collimator optical system.
A surveying instrument comprising:
- a surveying instrument body rotatable about each of a vertical axis and a horizontal axis;
- a telescope optical system positioned in said surveying instrument body;
- a collimator optical system positioned in said surveying instrument body, a viewing angle of said collimator optical system being greater than a viewing angle of said telescope optical system,
- wherein said surveying instrument body is driven to rotate about each of said vertical axis and said horizontal axis to position an image of a target at a survey point within a field-of-view of said telescope optical system in accordance with positional information on said survey point which is obtained through said collimator optical system.
Dependencies are inferred from the claim text.