Spectacle lens semi-finished product or spectacle lens finished product and method of making the same
AssigneeCarl Zeiss Vision International GmbH
InventorsRalf Meschenmoser, Karl-Heinz Winter, Ralf Gorosics
Life of this patent
Estimating the term…
Abstract
The invention relates to a spectacle lens semi-finished or finished product with a front surface, a rear surface, a cylinder rim surface, a front edge surface with a front surface transition to the front surface and a front cylinder rim surface transition to the cylinder rim surface and/or a rear edge surface with a rear surface transition to the rear surface and a rear cylinder rim surface transition to the cylinder rim surface. The front surface transition is formed as a rounding and/or the rear surface transition is formed as a rounding.
Claims13
A spectacle lens semi-finished product or spectacle lens finished product comprising:
- a front surface;
- a rear surface;
- a cylinder rim surface;
- a front edge surface having a front surface transition to said front surface and a front cylinder rim surface transition to said cylinder rim surface;
- and/or, a rear edge surface having a rear surface transition to said rear surface and a rear cylinder rim surface transition to said cylinder rim surface;
- and,
- said front surface transition being configured as a rounding;
- and/or, said rear surface transition being configured as a rounding, wherein:
- said rounding of said front surface transition has a radius of curvature (R204a) greater than 1.0 mm;
- and/or,
- said rounding of said rear surface transition has a radius of curvature (R205a) greater than 1.0 mm.
A method of making a spectacle lens semi-finished product or spectacle lens finished product, the product including:
- a front surface;
- a rear surface;
- a cylinder rim surface;
- a front edge surface having a front surface transition to said front surface and a front cylinder rim surface transition to said cylinder rim surface;
- and/or, a rear edge surface having a rear surface transition to said rear surface and a rear cylinder rim surface transition to said cylinder rim surface;
- the method comprising the steps of:
- imparting a rounding to said front surface transition;
- and/or,
- imparting a rounding to said rear surface transition,
- wherein said rounding of said front surface transition and/or said rounding of said rear surface transition is integrally cast.
A method of making a spectacle lens semi-finished product or spectacle lens finished product, the product including:
- a front surface;
- a rear surface;
- a cylinder rim surface;
- a front edge surface having a front surface transition to said front surface and a front cylinder rim surface transition to said cylinder rim surface;
- and/or, a rear edge surface having a rear surface transition to said rear surface and a rear cylinder rim surface transition to said cylinder rim surface;
- the method comprising the steps of:
- imparting a rounding to said front surface transition and/or imparting a rounding to said rear surface transition;
- and,
- thereafter, wetting said product having said front surface transition and/or said product having said rear surface transition,
- wherein said rounding of said front surface transition and/or said rounding of said rear surface transition is integrally cast.
Dependencies are inferred from the claim text.