Cam ring of lens barrel and method for manufacturing same

Details Cam ring of lens barrel and method for manufacturing same Cam ring of lens barrel and method for manufacturing same

1992-04-10

1993-10-19

Arnold, Bruce Y.

Optical: systems and elements

Lens

With variable magnification

359699, 359704, G02B 1514

Patent

active

052551245

ABSTRACT:
A cam ring of a substantially annular shape for a lens barrel including at least one cam groove in which a guide pin provided on a lens group which is movable in an optical axis direction is placed and a gear which is provided on an outer periphery of the cam ring to rotate the cam ring, wherein at least a part of the cam groove is in the form of an inner cam groove with a closed bottom located on the outer surface thereof. The gear is integrally formed on the outer surface of the cam ring. The invention is also directed to a method for manufacturing such a cam ring.

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European Search Report (for E.P.O. Application No. 0 273 382.), Sep. 4, 1988.

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