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:
Feb. 02, 2016
Filed:
Mar. 15, 2013
Applicant:
Iain A. Neil, Cummugny, CH;
Inventor:
Iain A. Neil, Cummugny, CH;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/14 (2006.01); H04N 5/225 (2006.01); G02B 15/167 (2006.01); G02B 15/177 (2006.01);
U.S. Cl.
CPC ...
G02B 15/14 (2013.01); G02B 15/167 (2013.01); G02B 15/177 (2013.01); H04N 5/2254 (2013.01);
Abstract
A zoom lens including, along an optical axis and in order from an object space to an image space: first lens group with negative power; an aperture stop; a second lens group with positive power; a third lens group with positive power; and a fourth lens group. The second and third lens groups and the aperture stop are axially movable for zooming. At least one lens element in the first lens group is moveable to provide for focusing. The aperture stop moves independently of the lens groups during zooming and has a clear aperture that changes size during zooming.