Optics: measuring and testing – Fiducial instruments – Artificial reference
Patent
1975-02-10
1977-12-13
Corbin, John K.
Optics: measuring and testing
Fiducial instruments
Artificial reference
356149, G01B 1126
Patent
active
040626342
ABSTRACT:
A system is disclosed for controlling the plane of a laser beam in either horizontal, vertical or selected grade angle attitudes. The system includes an assembly comprising a housing which carries the operative components in a water-tight enclosure. The laser beam is generated by a laser tube carried on a chassis which is mounted for a limited range of universal movement about orthogonally intersecting Y and X axes by means of a gimbal frame. Optics structure is provided to route the beam in a collimated path along a Z-axis longitudinally of the chassis. A beam reflector unit rotatably mounted on an end of the chassis reflects the beam in a plane orthogonal to the Z-axis through a lighthouse structure provided in an end of the housing. The system for controlling the beam plane attitude includes three level sensing vials which are carried on the chassis, as well as a pair of Y- and X-axis motors and associated drive trains.
REFERENCES:
patent: 621358 (1899-03-01), Merrill
patent: 3588249 (1971-06-01), Studebaker
patent: 3612700 (1971-10-01), Nelson
patent: 3729266 (1973-04-01), Mason et al.
patent: 3876309 (1975-04-01), Zicaro et al.
Heumann Thomas E.
Kahn Michael E.
Luebbers Scott S.
Rando Joseph F.
Corbin John K.
Koren Matthew W.
Spectra-Physics Inc.
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