Zoom lens having vibration compensating function

Details Zoom lens having vibration compensating function Zoom lens having vibration compensating function

1998-07-31

1999-11-23

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359557, G20B 1514, G20B 2764

Patent

active

059910917

ABSTRACT:
A standard zoom lens of the negative-lead type having a vibration compensating function includes, in order from an object side to an image side, a first lens unit having a negative refractive power, the first lens unit moving along an optical axis during variation of magnification, a second lens unit having a positive refractive power, the second lens unit moving along the optical axis during variation of magnification, a third lens unit having a positive refractive power, the third lens unit moving along the optical axis during variation of magnification, and a fourth lens unit, the fourth lens unit being stationary during variation of magnification, wherein, when the zoom lens vibrates, the third lens unit is made to make a movement having at least a vector component which is perpendicular to the optical axis to compensate for shaking of an image.

REFERENCES:
patent: 5270857 (1993-12-01), Oizumi et al.
patent: 5303087 (1994-04-01), Hayakawa et al.
patent: 5598299 (1997-01-01), Hayakawa
patent: 5652678 (1997-07-01), Suzuki et al.
patent: 5774267 (1998-06-01), Kodama et al.
patent: 5835272 (1998-11-01), Kodama
patent: 5847875 (1998-12-01), Kodama

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