METHOD OF MANUFACTURING SPECTACLE LENS, FINISHED UNCUT SPECTACLE LENS AND SEMI-FINISHED LENS BLANK

A finished uncut spectacle lens (20) is provided. The spectacle lens (20) includes a curved front surface (21) including an optical bowl (15) with a convex curvature and a peripheral lentic zone (27) surrounding the optical bowl (15). The curvature of the curved front surface (21) in the peripheral...

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Bibliographische Detailangaben
Hauptverfasser: GALL MICHAEL, NOLAN ANGELA
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:A finished uncut spectacle lens (20) is provided. The spectacle lens (20) includes a curved front surface (21) including an optical bowl (15) with a convex curvature and a peripheral lentic zone (27) surrounding the optical bowl (15). The curvature of the curved front surface (21) in the peripheral lentic zone (27) is flatter than in the optical bowl (15). The optical bowl size is large enough that a lens filling the entire frame can be glazed from it. The inclusion of a flatter peripheral lentic zone enables a larger diameter of the finished unglazed lens (d) with larger edge thickness (29) than would be possible if the same back surface was cut on a semi-finished blank having a uniform spherical front (30), without compromise to the finished lens center thickness (32). In addition, a method of manufacturing such a spectacle lens (20) and a semi-finished lens blank used in the method are provided. 提供了一种成品未切眼镜片(20)。眼镜片(20)包括包括弯曲前表面(21)以及周边镜片区(27),该弯曲前表面包括具有凸曲率的光学碗(15),该周边镜片区围绕光学碗(15)。弯曲前表面(21)在周边镜片区(27)中的曲率比在