Automatic angle compensator

Details Automatic angle compensator Automatic angle compensator

1995-04-03

1998-12-08

Hantis, K. P.

Optics: measuring and testing

Fiducial instruments

Artificial reference

33366, G01C 918

Patent

active

058478248

ABSTRACT:
An automatic angle compensator comprising a liquid sealing container 4 having transparent liquid to form a free liquid surface 1 sealed therein, light projecting systems 21 and 22 for projecting light at a given angle to the free liquid surface, and an optical system for guiding the light beam, which is reflected by the free liquid surface and irradiated from the liquid sealing container, whereby optical axis of the light beam reflected by the free liquid surface is aligned with optical axis of the optical system regardless of whether the free liquid surface is turned by 0.degree. or 90.degree., and automatic compensation can be achieved regardless of whether the system is positioned in horizontal or vertical directions.

REFERENCES:
patent: 3905707 (1975-09-01), Feist et al.
patent: 4993162 (1991-02-01), Scholian
patent: 5033848 (1991-07-01), Hart et al.
patent: 5218771 (1993-06-01), Redford

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