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. 19, 2012
Filed:
Apr. 14, 2009
Applicants:
Ewan Findlay, Dollar, GB;
Andrew Harvey, Glasgow, GB;
Mads Demenikov, Edinburgh, GB;
Inventors:
Assignee:
STMicroelectronics (Research & Development) Ltd, Marlow, Buckinghamshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/262 (2006.01);
U.S. Cl.
CPC ...
Abstract
A zoom lens system includes a variator lens group, a compensator lens group and a third lens group. The compensator lens group is arranged to only partially compensate for movement of the variator group. In order to provide further compensation for the zoom lens, an image enhancer implement wavefront coding and artifact reduction techniques. The compensator group may be fixed or alternatively, its movement relative to the variator may be effected by a simple cam mechanism.