LENS SET, METHOD OF DESIGNING LENS AND METHOD OF MANUFACTURING LENS

There is provided a progressive addition lens for spectacles including a distance portion and a near portion having different powers, wherein an equivalent spherical power of the distance portion is plus; and a first lens and a second lens having different addition powers from each other, and a diff...

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Bibliographische Detailangaben
Hauptverfasser:	MORI, Takateru, SHINOHARA, Toshihide, KAGA, Tadashi, ITO, Ayumu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTACT LENSES OPTICS PHYSICS SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	There is provided a progressive addition lens for spectacles including a distance portion and a near portion having different powers, wherein an equivalent spherical power of the distance portion is plus; and a first lens and a second lens having different addition powers from each other, and a difference between vertical surface power OVPf1 in the distance portion and vertical surface power OVPn1 in the near portion on an object-side surface of the first lens, and a difference between vertical surface power OVPf2 in the distance portion and vertical surface power OVPn2 in the near portion on an object-side surface of the second lens are the same.