Adapter for extracting a portion of an image from an optical system or device
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United States of America Patent
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Apr 21, 1998
Grant Date -
N/A
app pub date -
Nov 21, 1996
filing date -
Nov 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adapter for an optical eyepiece for propagating a non-collimated light beam from an object along an optical axis of the eyepiece so as to present an image to an observer, the adapter comprising a beam splitter for inserting into the eyepiece so as to intercept the light beam and direct a portion thereof outside the eyepiece through an exit aperture of the beam splitter without substantially changing the image to the observer. The adapter is particularly useful for extracting a portion of an image from an eyepiece having restricted access in a night vision goggles thus permitting an external scene to be recorded simultaneous with its being viewed by the observer.
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