Night vision goggle focusing aid
OwnerLeonard A. Temme, David L. Still +1inventors
InventorsLeonard A. Temme, David L. Still, Michael H. Mittelman
Life of this patent
Estimating the term…
Abstract
An eye piece focusing aid provides improved focusing of an eye onto an intensified image screen of a NVG. A lens cap or blocking screen has two small holes (approximately one to two millimeters in diameter) which appear as a single hole when the retina of the eye is focused on the intensified image screen.
Claims7
A method of focusing an eyepiece of a night vision goggle comprising the steps of:
- making a plurality of holes in a night vision goggle lens cover;
- placing said night vision goggle cover over aid night vision goggle eyepiece lens;
- and
- adjusting the eyepiece of said light vision goggle to cause spots of light produced by said plurality of holes in said cover to converge at the same location on a night vision goggle user's retina.
An apparatus for aiding focusing of an eyepiece of a night vision goggle comprising in combination;
- in night vision goggle having an objective lens, an objective screen, a viewing screen and a light amplification means located between said objective lens and said viewing screen, and an eyepiece;
- a cover placed over aid eyepiece lens, said cover having a plurality of pinholes for receiving light;
- eyepiece adjusting means for focusing a viewer's eye on said viewing screen;
- and
- whereby adjusting said eyepiece causes said plurality of pinholes to appear as a single hole to a person looking into said night vision goggle when said night vision goggle focuses the viewing screen on a retina of said viewer.
An apparatus for focusing optical system at infinity comprising in combination:
- an eyepiece of said apparatus wherein said eyepiece contains an objective lens for capture of parallel light from a point source at an infinite distance;
- means for focusing light captured by said objective lens on a user's retina;
- a plurality of light emitting holes in a cover placed over said objective lens;
- and
- means for adjusting the eyepiece of said apparatus whereby the user viewer can cause said plurality of holes to converge at a single location on the retina.
A method for focusing an eyepiece of a night vision goggle comprising the steps of:
- making a plurality of holes in a night vision goggle lens cover;
- placing said night vision goggle cover over an night vision goggle objective lens:
- and
- adjusting the eyepiece of said night vision goggle to cause spots of light produced by said plurality of holes in said cover to converge at the same location on a night vision goggle user's retina.
An apparatus for aiding focusing of an eyepiece of a night vision goggle comprising in combination:
- an night vision goggle having an objective lens, an objective screen, a viewing screen and a light amplification means located between said objective and said viewing screen, and an eyepiece;
- a cover placed over said objective lens, said cover having a plurality of pinholes for receiving light;
- eyepiece adjusting means for focusing a viewer's eye on said viewing screen;
- and
- whereby adjusting said eyepiece causes said plurality of holes to appear as a single hole to a person looking into said night vision goggle when said night vision goggle focuses the viewing screen on a retina of said user.
Dependencies are inferred from the claim text.