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. 22, 2010
Filed:
Oct. 31, 2008
Wenli Liu, Beijing, CN;
Jianping Zhu, Beijing, CN;
Baoyu Hong, Beijing, CN;
Fei LI, Beijing, CN;
Zhenya MA, Beijing, CN;
Lei Yang, Beijing, CN;
Wenli Liu, Beijing, CN;
Jianping Zhu, Beijing, CN;
Baoyu Hong, Beijing, CN;
Fei Li, Beijing, CN;
Zhenya Ma, Beijing, CN;
Lei Yang, Beijing, CN;
National Institute of Metrology, Beijing, CN;
Abstract
A cylindrical model eye comprises a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface, a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface. The second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has substantially the same radius curvature radius as the second cylindrical surface.