Surveying device
AssigneeTopcon Corporation
InventorsTaichi Yuasa, Nobuyuki Nishita
Life of this patent
Estimating the term…
Abstract
In a surveying device 1 having a rotation unit 18 that houses part or all of the optical system of the surveying device, the rotation unit has an instrument center of the surveying device; the surveying device has a target as a second optical system having a retroreflective function and a target center; the optical system of the surveying device has a collimation optical axis, and the target has a reference optical axis; the target is provided with the target center coinciding or substantially coinciding with the instrument center; and, upon rotation of the rotation unit, the reference optical axis of the target is configured to coincide or substantially coincide with a direction of the collimation optical axis of the optical system of the surveying device.
Claims21
A surveying device comprising:
- a rotation unit that accommodates at least part of an optical system of the surveying device or the entirety thereof, the rotation unit having an instrument center of the surveying device;
- a target that is a second optical system having a retroreflective function and a target center, wherein the optical system of the surveying device has a collimation optical axis, and the target has a reference optical axis;
- wherein the target is provided with the target center coinciding or substantially coinciding with the instrument center;
- and
- wherein, upon rotation of the rotation unit, the reference optical axis of the target is configured to coincide or substantially coincide with a direction of the collimation optical axis of the optical system of the surveying device.
Dependencies are inferred from the claim text.