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US 7,742,244 B2Granted
Cylindrical model eye, cylindrical test device and the manufacturing method thereof
AssigneeNational Institute of Metrology
InventorsWenli Liu, Jianping Zhu, Baoyu Hong, Fei Li, Zhenya Ma, Lei Yang
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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.
Claims17
A model eye, comprising:
- a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface;
- and
- a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface;
- wherein the second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has a first radius of curvature which is substantially identical to a second radius of curvature of the second cylindrical surface.
1 more element
A method for manufacturing a cylindrical model eye, comprising:
- forming a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface;
- forming a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface;
- bonding the plano-cylindrical portion with the sphero-cylindrical portion, wherein the second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has a first radius curvature of the second cylindrical surface.
Dependencies are inferred from the claim text.