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Title:
視野角に依存する処方データを用いて眼鏡レンズを計算する方法
Document Type and Number:
Japanese Patent JP5795362
Kind Code:
B2
Abstract:
Optimizing a spectacle lens by: obtaining prescription or refraction data VA11 and VA12 of a wearer for at least two different object distances A11 and A12 (A11≠A12), comprising data relating to a spherical power Sphv, a magnitude of an astigmatism CylV, and an astigmatism axis AxisV; specifying an object distance model A1(x, y), wherein A1 designates the object distance and (x, y) designates a visual spot or visual point of the spectacle lens in a predetermined direction of sight; specifying a function PRef=ƒ(A1), which describes the dependence of a power vector P Ref = ( M Ref J 0 Ref J 45 Ref ) = ( Sph V + Cyl V 2 - Cyl V 2 ⁢ cos ⁢ ⁢ 2 ⁢ ⁢ Axis V J 45 Ref = - Cyl V 2 ⁢ sin ⁢ ⁢ 2 ⁢ ⁢ Axis V ) of the prescription on the object distance A1, determining the components of the power vector PRef of the prescription in a plurality of visual points (x, y) on the basis of the object distance model A1(x, y) and the obtained prescription data VA11 and VA12; and calculating at least one surface of the spectacle lens taking the determined components of the power vector PRef of the prescription in the visual points (x, y) into account.

Inventors:
Gregor, Esser
Helmut, Altoheimer
Wolfgang, Becken
Andrea, Berg
Dietmar, Uttenbailler
Application Number:
JP2013506532A
Publication Date:
October 14, 2015
Filing Date:
April 21, 2011
Export Citation:
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Assignee:
Rodenstock. Gezel Shaft. Mitt. Beschlenktel. Haftung
International Classes:
G02C13/00; G02C7/02
Domestic Patent References:
JP2007501960A
JP2002508674A
Foreign References:
WO2008089999A1
Attorney, Agent or Firm:
Hirohito Katsunuma
Hiroyuki Nagai
Katsuomi Isogai
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Kazuo Okamura