Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1975-03-27
1976-11-23
Stephan, Steven L.
Geometrical instruments
Straight-line light ray type
Multisight line
356252, F41G 138, G02B 2310
Patent
active
039927822
ABSTRACT:
A low profile gun sight suitable for use on a small firearm such as a handgun, is disclosed having a hollow sight housing containing optical elements including at least a collimating lens, a first fully reflective optical element and a second semitransparent optical element arranged in periscopic relation and fixed within the housing, and reticle indicia means movably supported within the housing, the housing having first and second openings at opposite ends of a sight path through the housing from an observer to a target which passes through the semitransparent optical element as well as a third opening for allowing light from the general target area to illuminate the reticle indicia so that a collimated image of the reticle indicia may be superimposed on the target view. Horizontal and vertical adjustment screws pass through the housing in generally mutually perpendicular directions to provide for change of aim of the sight with the first and second optical elements providing a line of sight from the observer to the reticle indicia which is deviated from the sight path through the housing in a direction oblique to both of the generally mutually perpendicular directions. The housing may be formed in two portions, each having a transverse generally cylindrical aperture with a hollow sleeve snugly engaging both transverse apertures to simultaneously provide a light pathway between the first and second portions through the sleeve and a mechanical connection between the portions. The hollow sleeve may be fastened in each of the transverse apertures by an adhesive material with one end of the sleeve forming a narrow annular optical element mounting surface for the collimating lens.
REFERENCES:
patent: 683203 (1901-09-01), Grubb
patent: 2472809 (1949-06-01), Decker
patent: 3153856 (1964-10-01), Felix
patent: 3297389 (1967-01-01), Gibson
patent: 3645635 (1972-02-01), Steck
patent: 3836263 (1974-09-01), Rickert
patent: 3880529 (1975-04-01), Althouse et al.
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