Lens and optical device provided with the lens

Details Lens and optical device provided with the lens Lens and optical device provided with the lens

1998-04-14

1999-09-21

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359704, G02B 1514

Patent

active

059561874

ABSTRACT:
Part of a shutter drive mechanism 28 which drives a shutter blade 27 extends forward in the optical axis direction from a third lens unit 33 provided with the shutter blade 17. A space 36 is provided around an adjacent second lens unit 32 to accommodate the extension of the shutter drive mechanism 28 when the lens barrel is retracted. Part of a focus drive mechanism 15 extends forward in the optical axis direction from a third lens unit 33 which is driven to focus. A space 37 is provided around the adjacent second lens unit 32 to accommodate the extension of the focus drive mechanism 15 when the lean barrel is retracted.

REFERENCES:
patent: 5115348 (1992-05-01), Notagashira
patent: 5182674 (1993-01-01), Notagashira et al.
patent: 5548446 (1996-08-01), Enomoto

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