Claims
- 1. A method of making a steeply curved lens element adapted for mounting in eyewear, the lens element having a non-zero, prescription through power comprising the steps of:
molding a lens blank having a radius of curvature along a principle meridian of less than 35 mm over a substantial portion of an anterior surface thereof; cutting a back surface on the molded lens blank, which, together with the front surface, provides the non-zero prescription through power; and edging the lens blank to provide an edged lens having a maximum hollow depth of at least 8 mm.
- 2. The method of claim 1, wherein the cut back surface together with the front surface provides a non-zero astigmatism correction for the wearer.
- 3. The method of claim 2, wherein a circular meridian toroid is used in the generation of the back surface to provide the astigmatism correction for the wearer.
- 4. The method of claim 1, wherein a progressive surface power addition is provided by at least the front of the lens element.
- 5. The method of claim 1, wherein a progressive surface power addition is provided by at least the back surface of the lens element.
- 6. A method of making protective eyewear with steeply curved lens elements comprising the steps of:
molding a lens blanks having an anterior spherical surface with a radius of curvature along a principle meridian of less than 35 mm over a substantial portion of a said surface and a molded back surface on the molded lens blank, which, together with the front surface, provides essentially no through power; edging the lens blanks to provide a pair of edged lens each having a maximum hollow depth of at least 8 mm; and mounting the pair of lenses in eyewear so that a center of curvature of the anterior surface is located approximately on the respective centroids of rotation of the eyes of a wearer in the as worn position.
RELATED APPLICATIONS
[0001] This application is a divisional of U.S. patent application Ser. No. 09/698,270 filed Oct. 30, 2000, which is a continuation-in-part of U.S. Pat. No. 6,440,335, which issued on Aug. 27, 2002.
[0002] The '270 application and the '335 patent are also continuations-in-part of U.S. Pat. No. 6,142,624, which issued on Nov. 7, 2000, which application is hereby incorporated by reference in its entirety.
[0003] The '270 application is also a continuation-in-part of International Application No. PCT/AU99/01029 to Yip et al. filed internationally on Nov. 19, 1999 with the U.S. as a designated state, published on Jun. 8, 2000 as WO 00/33111, which application is hereby incorporated by reference in its entirety.
Divisions (1)
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Number |
Date |
Country |
Parent |
09698270 |
Oct 2000 |
US |
Child |
10718578 |
Nov 2003 |
US |
Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
09658496 |
Sep 2000 |
US |
Child |
09698270 |
Oct 2000 |
US |
Parent |
09223006 |
Dec 1998 |
US |
Child |
09698270 |
Oct 2000 |
US |
Parent |
PCT/AU99/01029 |
Nov 1999 |
US |
Child |
09698270 |
Oct 2000 |
US |