Precision sighting instrument for viewing obstructed areas

Illumination – With viewing mirror – Inspection type

Patent

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Details

362142, 362208, F21V 3300

Patent

active

056369182

ABSTRACT:
A precision sighting device is provided for viewing dark recesses as well as obstructed areas in general which are difficult to see with the naked eye comprising a longitudinally extendable/retractable rigid rodlike member, a focusable light source mounted at one end of the rodlike member, longitudinally parallel and adjacent to the rodlike member by at least one holding bracket such that light may be emitted from the focusable light source and directed lengthwise and parallel to the rodlike member toward an opposite end of the rodlike member, a tandem ball joint at said opposite end of the rodlike member formed in part by a first ball integral to said opposite end of the rodlike member, and a mirror pivotally connected by a flange extending from a peripheral portion of the mirror, to a second ball of said tandem ball joint--such that light emitted from the focusable light source may form a focal point or area on the center of the mirror at an exponential number of positions of the mirror with respect to a focal length of light emitted from the focusable light source. An object of the invention is to provide a focusable high intensity light source integral to a compact structural design to consistently provide for optical convergence of light at a center point of an integral mirror at many different focal lengths from the light source and angular positions of the mirror with respect to the integral light source. Another object of the invention is to provide an instrument which is especially suited for precision in aiming light and illuminating details very brightly for accurate and clear viewing while greatly reducing light reflected from the background of the area surrounding the mirror thereby providing much improved visual contrast.

REFERENCES:
patent: 1462398 (1923-07-01), Van Nostrand
patent: 1656754 (1928-01-01), Norris
patent: 1750194 (1930-03-01), Rydman
patent: 2107791 (1938-02-01), Henning
patent: 2222879 (1940-11-01), Porter
patent: 2652479 (1953-09-01), Wilson
patent: 4907135 (1990-03-01), Torrson et al.
patent: 5428484 (1995-06-01), Baker

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