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:
Jul. 20, 2010
Filed:
Nov. 29, 2005
Fumiya Yagi, Osaka, JP;
Fumiya Yagi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A zoom lens device is reduced in size and capable of zoom operation with the number of steps large enough to display the value as a zoom lens. The zoom lens device comprises lens system (A) with a first lens group, a second lens group, and a third lens group arranged on optical axis (Z). It comprises zoom mechanism (E) for changing the focal distance of lens system (A) by changing the second lens group in the direction of optical axis (Z). It comprises focus mechanism (C) for adjusting the image forming position of lens system (A) by moving the third lens groupin the same direction as optical axis (Z). It also comprises driving force transmitting section (B) for transmitting the driving force from the motor to zoom mechanism (E) and focus mechanism (C). Driving force transmitting section (B) includes stopwork (D) like Geneva drive (F) for intermittently transfer the driving force from the driving source to zoom mechanism (E).