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https://drivepatents.com/patents/1396687 · 6 May 2026
Provided is a surveying instrument that reduces the burden of a centering work on a worker. A surveying instrument (1) capable of irradiating a spotlight (SL) as visible light for centering toward a position below a vertical axis of a surveying instrument ...
https://drivepatents.com/patents/1396311 · 29 Apr 2026
Provided is a surveying instrument equipped with an instrument height measuring unit compact in size. In a surveying instrument including an instrument height measuring unit configured to make a distance measurement by irradiating light toward a position b...
https://drivepatents.com/patents/1396497 · 29 Apr 2026
Provided is a surveying instrument capable of easily measuring an instrument height with precision. In a surveying instrument including an instrument height measuring unit configured to make a distance measurement by emitting distance-measuring light to a ...
https://drivepatents.com/patents/981526 · 27 Nov 2013
The converter has an illumination device including a polychromatic light source (1). A filtering device is formed with holes for filtering reflected beams to convert into filtered beams with low spectral width to form a real image with constitutive spots. ...