Height sensing measurement device

Details Height sensing measurement device Height sensing measurement device

1998-01-20

1999-09-07

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

33227, 33292, 33299, 25055938, G01B 1100, G01C 1500

Patent

active

059495480

ABSTRACT:
A measurement device has a telescope supported by a main body of a total station so as to be rotatable about the horizontal axis. A vertically extending light-passing hole is formed in the main body, so that a distance measuring light wave, which is emitted through the telescope from a light-emitting element provided in the main body, can pass. A prism unit having a corner cube prism is placed on a base point. A centering operation is carried out by rotating the telescope vertically downward. Then, a distance measurement is carried out by radiating the distance measuring light wave onto the corner cube prism through the telescope.

REFERENCES:
patent: 5028949 (1991-07-01), Kawano
patent: 5051767 (1991-09-01), Honma et al.
patent: 5159760 (1992-11-01), Spiegel et al.
patent: 5639966 (1997-06-01), Whitted

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