Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1986-05-12
1988-09-13
Corbin, John K.
Optics: measuring and testing
Range or remote distance finding
With photodetection
350500, 350286, 356138, G02B 2610, G01B 1126
Patent
active
047704802
ABSTRACT:
Apparatus for projecting a laser beam to provide multiple reference beams includes a beam diverting assembly rotatably mounted at an end of a housing from which emerges a laser beam generated within the housing, and a pentaprism assembly disposed stationarily at the housing end outwardly of the beam diverting assembly. The beam diverting assembly receives the laser beam and splits it into orthogonally-disposed transmitted and reflected beam components. Rotation of the beam diverting assembly about the axis of the transmitted beam component causes rotation of the reflected beam component to define a reference plane. The pentaprism assembly receives the transmitted beam component from the diverting assembly and deflects it to define a stationary reference line disposed in a generally parallel spaced relationship to the reference plane defined by the rotating reflected beam component. Also, an end cap mounts the pentaprism assembly at the housing end and a sighting telescope outwardly of and adjacent to the pentaprism assembly for facilitating alignment of the reference line.
REFERENCES:
patent: 3684381 (1972-08-01), Zoot
patent: 3796496 (1974-03-01), Appler et al.
patent: 3966328 (1976-06-01), Wiklund
patent: 4031629 (1977-06-01), Paluck
patent: 4035084 (1977-07-01), Ramsay
patent: 4062634 (1977-12-01), Rando et al.
patent: 4519705 (1985-05-01), Morrow
patent: 4676598 (1987-06-01), Markley et al.
Product brochure, "910 and 942 LaserLevel, Leveling and Vertical Alignment Systems for Interior and Exterior Applications".
Ben Loha
Corbin John K.
Spectra-Physics Inc.
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