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:
Sep. 18, 1984
Filed:
Jun. 18, 1982
Toru Fukuhara, Isehara, JP;
Kunio Konno, Yokohama, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
A zoom lens provided with a first group lens having a negative power and a second group lens having a positive power, the first group lens being moved in the direction of the optical axis for focus adjustment, the first group lens and the second group lens being moved in the direction of the optical axis for zooming, includes means for detecting the focused condition of the zoom lens to an object, the detecting means including optical means for receiving a light beam from the object which is discrete from a light beam incident on the zoom lens, and means for making an output signal representative of the focused condition from the light beam passed through the optical means, and means for integrally supporting the detecting means and the first group lens for conjoint movement in the direction of the optical axis.