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. 10, 2008
Filed:
Mar. 07, 2005
Hiroyuki Minakata, Hachioji, JP;
Hiroyuki Minakata, Hachioji, JP;
Olympus Corporation, Tokyo, JP;
Abstract
The invention concerns a zoom optical system in which, for zooming, an optical function surface is rotated about a point away from it to change the position of a light beam that passes through the optical function surface. The zoom optical system comprises a stopand one or more optical elementslocated on an object side with respect to the stop, each having at least one optical function surface, and is adapted to form an image of a distant object O at varying magnifications. At least one optical function surfacecomprises a continuous surface, and is constructed such that there is a continuous change in at least the radius of curvature in a sectional direction from one end to another end. Upon zooming, at least one optical elementhaving optical function surfacesis rotated about a point S that is not contiguous to one optical function surface.