Method for operating a panoramic optical system
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United States of America Patent
Stats
-
Apr 27, 1982
Issued Date -
N/A
app pub date -
Jun 9, 1980
filing date -
Feb 7, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for operating a panoramic optical system to produce a shadow or darkened zone on the apex of a curved lens in order to eliminate undesirable optical interference in the region between the curved reflector and the focal plane is disclosed. The claimed method makes possible the accurate prediction of the diameter of the darkened zone around which the reflected image is annularly disposed, for a lens having a reflective surface of a given radius of curvature and for a specific location of the transparent/opaque border relative to the top of the lens. This makes possible the calibration of vertical displacement of an opaque sleeve for quickly and easily establishing a setting which will produce a darkened zone of a standard diameter.
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International Classification(s)
Cited Art Landscape
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