Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2005-02-22
2005-02-22
Sugarman, Scott J. (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S159000
Reexamination Certificate
active
06857742
ABSTRACT:
Disclosed is a manufacturing method of a spectacle lens. The entire range of available vertex power of a spectacle lens is divided into a plurality of sections, and a plurality of types of semifinished lens blanks that are different in base curve are prepared for each of the sections. On the basis of required vertex power, choices of lens blanks are narrowed down. The plurality of types of the semifinished lens blanks can be selected for a specific vertex power. A customer selects one type of the semifinished lens blank based on weightings of optical performance and outward appearance. Further, a back surface of the selected semifinished lens blank is processed to form a finished lens according to a required specification for the spectacle lens.
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English Language Abstract of JP 10-175149.
“World's First Both-Sides Aspherical Single Focus Lens—Seiko Super Sovereign AZ”, Optical Monthly Gankyo, General Technical Journal of Eyewear, Sep. 15, 1998, pp. 182-183.
English translation of “World's First Both-Sides Aspherical Single Focus Lens—Seiko Super Sovereign AZ”, Optical Monthly Gankyo, General Technical Journal of Eyewear, Sep. 15, 1998, pp. 182-183.
Obara Yoshimi
Shirayanagi Moriyasu
Greenblum & Bernstein P.L.C.
PENTAX Corporation
Sugarman Scott J.
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