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:
Jun. 26, 1984
Filed:
Oct. 02, 1981
Applicant:
Inventor:
Takeshi Muryoi, Chigasaki, JP;
Assignee:
Nippon Kogaku K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350430 ;
Abstract
A zoom lens barrel has a focusing operating member and a zooming operating member and a blocking member. When the blocking member is at a first position, movement of the focusing operating member is blocked so as to prevent focusing of a lens system with respect to an object at a distance shorter than a predetermined distance, and when the blocking member is at a second position, movement of the zooming operating member is blocked so as to prevent zooming outside of a predetermined focal length range of the lens system.