Optical systems

Details Optical systems Optical systems

1978-01-04

1979-09-25

Corbin, John K.

350179, 350221, 350222, G02B 2300

Patent

active

041688821

ABSTRACT:
An optical system for conveying an optical image having two first biconvex od lenses arranged end to end on a common optical axis in spaced relationship, and between said first rod lenses but not in contact with them a pair of second rod lenses also arranged end to end on the same axis, the adjacent ends of the second rod lenses being concave and defining a biconvex cavity which can contain a fluid whereby a fluid lens is formed, the system being substantially symmetrical about a median plane through the biconvex cavity and the modulus of the reciprocal of the radius of curvature of the fluid lens being less than or equal to the modulus of the difference between the reciprocal of the radius of curvature of the convex surfaces of the first rod lenses adjacent to the second rod lenses and the reciprocal of the radius of curvature of the convex surfaces of the second rod lenses adjacent to the first rod lenses.

REFERENCES:
patent: 2171640 (1939-09-01), Berek
patent: 3257902 (1966-06-01), Hopkins
patent: 3364816 (1968-01-01), Jeffree
patent: 3799656 (1974-03-01), Fleischman

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