Method for operating a panoramic optical system

Details Method for operating a panoramic optical system Method for operating a panoramic optical system

1980-06-09

1982-04-27

Henry, Jon W.

350293, 350441, G02B 510, G02B 2718

Patent

active

043267750

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.

REFERENCES:
patent: 1653575 (1927-12-01), Kirtane
patent: 2176554 (1939-10-01), Hardy
patent: 2244235 (1941-06-01), Ayres
patent: 2299682 (1942-10-01), Conant
patent: 3209073 (1965-09-01), Falbel
patent: 3846809 (1974-11-01), Pinzone et al.

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