Method and apparatus for retaining a contact lens
OwnerRobert Cameroninventor
Life of this patent
Estimating the term…
Abstract
A contact lens is retained on the end of a generally cylindrical mounting member having a hemispherical upper surface shaped to receive the contact lens. The mounting member has a central opening and a plurality of small capillaries extending to the hemispherical upper surface. A vacuum is drawn through the central opening and the capillaries to retain a contact lens to the upper surface of the mounting member.
Claims5
A mounting for a contact lens having a semi spherical surface and a circular outer edge, said mounting comprising
- a mounting body having a mounting surface,
- said mounting surface complementary to said semi spherical surface of contact lens,
- a plurality of capillaries extending through said mounting body to said mounting surface,
- means for drawing a vacuum through said capillaries to retain said semi spherical surface to said mounting surface,
- a sleeve surrounding said mounting body,
- said sleeve having a planar end surface, and
- one of said mounting body and said sleeve moveable with respect to the other.
A mounting for a contact lens having a concave semi spherical surface having a circular outer edge with a given diameter, said mounting comprising
- a mounting body having a mounting surface,
- said mounting surface being convex semi spherical and complementary to said concave semi spherical surface of said contact lens,
- a plurality of capillaries extending through said mounting body to said mounting surface,
- means for drawing a vacuum through said capillaries to retain said concave semi spherical surface to said mounting surface,
- said mounting surface having a circular outer edge and having a diameter a little larger than said given diameter of said contact lens, and
- a radial shoulder surrounding said circular outer edge of said mounting surface.
Dependencies are inferred from the claim text.