The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Jul. 31, 1998
Shingo Hayakawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.