Optical: systems and elements – Lens – With variable magnification
Patent
1995-04-21
1996-10-01
Epps, Georgia Y.
Optical: systems and elements
Lens
With variable magnification
359698, 359694, 359697, G02B 1514
Patent
active
055615619
ABSTRACT:
A lens barrel has a fixed barrel portion including therein a focusing optical system movable in the direction of the optical axis thereof to perform the focusing operation, and having a groove portion for electric wiring on the outer peripheral portion thereof. A moving member is rotatable about the fixed barrel portion with the optical axis as the center and moves the focusing optical system in the direction of the optical axis by rotation. An operating mechanism is rotatively operable about the optical axis and rotatable about the fixed barrel portion by the drive operation for the moving member. A fitted auxiliary member is secured on the outer peripheral portion of the fixed barrel portion and is rotatably fitted to one or both of the moving member and the operating mechanism.
REFERENCES:
patent: 4413894 (1983-11-01), Miki
patent: 4456356 (1984-06-01), Okabe
patent: 4796045 (1989-01-01), Hamanashi
patent: 4963000 (1990-10-01), Kawai
patent: 4964697 (1990-10-01), Fuziwara
patent: 5051764 (1991-09-01), Nomura
patent: 5144493 (1992-09-01), Nomura
patent: 5239415 (1993-08-01), Imanari
patent: 5264966 (1993-11-01), Okada
patent: 5418650 (1995-05-01), Imanari
Epps Georgia Y.
Mack Ricky
Nikon Corporation
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