Patent
1981-11-04
1985-01-29
Corbin, John K.
350453, 350477, 350481, G02B 910, G02B 912, G02B 1318
Patent
active
044962231
ABSTRACT:
A compact convertible photographic objective that is separable into two working components consisting of a front substantially afocal component that can be rotated or translated laterally into or away from a coaxial position with a rear component which normally is fixed in position on an assigned optical axis. Movement of the front component into coaxial alignment with the rear component increases the focal length of the combination so that the two components can be used for telephoto purposes.
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Caufield Francis J.
Corbin John K.
Gass Rebecca D.
Polaroid Corporation
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