Prism assembly having multi-directional reflectivity and targeti

Details Prism assembly having multi-directional reflectivity and targeti Prism assembly having multi-directional reflectivity and targeti

1989-04-04

1994-04-12

Cuchlinski, Jr., William A.

Geometrical instruments

Straight-line light ray type

Rod or target

359529, G01C 1506

Patent

active

053014359

ABSTRACT:
A prism assembly and sighting target which are omni-directional in azimuth and which provide a plurality of prisms dispersed symmetrically around the radial wall of a cylinder for reflecting incident laser light from any direction over 360 degrees in azimuth. A uniquely shaped sighting target for use with the prism assembly of the invention provides a visible target pattern from any direction over 360 degrees in azimuth. A cylindrical housing portion of the invention provides receptacles for receiving six prisms spaced at 60 degree intervals so that irrespective of the angle of azimuth from which the laser light is incident, a sufficient amount of light energy is reflected back to the laser light instrument to permit distance measuring over a pre-selected minimum distance.

REFERENCES:
patent: 2885670 (1959-05-01), Kirgan
patent: 4117455 (1978-09-01), Cervantes
patent: 4127972 (1978-12-01), Reimoser
patent: 4343550 (1982-08-01), Buckley et al.
patent: 4416509 (1983-11-01), Milan
patent: 4803784 (1989-02-01), Miller

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