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:
Apr. 17, 2001
Filed:
Sep. 22, 1997
Hiroyuki Kawamura, Omiya, JP;
Hiroshi Mizumura, Omiya, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
There are provided a position control signal generating means and a rate control signal generating means for driving a master lens group. One of these two means is validated by means of a changeover switch. A macro-shooting controller including the rate control signal generating means also serves as a zoom controller. After the position control signal generating means is validated to adjust a flange back length, the rate control signal generating means is validated, and then the master lens group moves to a macro-shooting position, etc. Thereafter, if the position control signal generating means is validated again by means of the changeover switch, the master lens group automatically returns to the previously-adjusted position of the proper flange back length.