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:
Dec. 08, 2015
Filed:
Mar. 14, 2012
Applicants:
Zaiguang Yu, Pudong, CN;
Guijian Wang, Pudong, CN;
Zhaohua Liu, YangPu, CN;
Inventors:
Assignee:
Carestream Health, Inc., Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/18 (2006.01); A61B 1/045 (2006.01); A61B 1/00 (2006.01); A61B 1/04 (2006.01); A61B 1/247 (2006.01); G02B 7/28 (2006.01); G02B 3/14 (2006.01); G03B 3/10 (2006.01); H04N 5/232 (2006.01); A61B 1/24 (2006.01); H04N 5/225 (2006.01);
U.S. Cl.
CPC ...
A61B 1/045 (2013.01); A61B 1/0019 (2013.01); A61B 1/04 (2013.01); A61B 1/24 (2013.01); A61B 1/247 (2013.01); G02B 3/14 (2013.01); G02B 7/285 (2013.01); G03B 3/10 (2013.01); H04N 5/23212 (2013.01); H04N 2005/2255 (2013.01);
Abstract
An autofocus method for an intra-oral camera modulates the focus of a liquid lens in a cycle that has at least first, second, and third focus positions and obtains an image at each focus position, measuring focus of the obtained image. The position of the liquid lens is adjusted according to the measured focus. Steps of modulating the focus of the liquid lens in the cycle with at least first, second, and third focus positions, and obtaining the image at each focus position and measuring focus of the obtained image are repeated.