眼鏡用の偏心非矯正レンズ

Japanese Patent JP4369534

B2

The invention relates to a dual lens optically corrected eyeglass comprising a first lens, a second lens and a dual lens frame for supporting the first lens in front of a first normal line of sight and a second lens in front of a second normal line of sight. Each lens has a posterior surface with a posterior center of curvature, an anterior surface with a separate and distinct anterior center of curvature, a thickness between the posterior and anterior surfaces, and a separate and distinct optical centerline passing through the respective posterior and anterior centers of curvature. The thickness of each lens is vertically tapered on either side of a horizontal plane which includes the corresponding optical centerline, and horizontally tapered on at least one side of a vertical plane which includes the corresponding optical centerline, for optical correction of each lens. Each lens exhibits a degree of wrap and a degree of downward rake such that each of the first and second normal lines of sight cross the first and second lenses, respectively, at a non-perpendicular angle in each of horizontal and vertical planes. A mechanical center of each lens is spaced below the horizontal plane by a distance which corresponds to the degree of downward rake of each lens, thereby minimizing prismatic shift which would otherwise have been induced by mounting each lens with the degree of downward rake.

WO/2014/195471	METHOD FOR DETERMINING AN OPTICAL EQUIPMENT
JPS56137999	METHOD OF PREPARING SOLID DRAWING AND ITS INSTRUMENT

Janard, James, H.
Reyes, Carlos, Dee.
Houston, Malcolm, Neil

JP52136097A

November 25, 2009

December 04, 1996

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Oakley, Inc.

G02C1/00; A42B3/22; G02C7/02; A61F9/02; G02B3/06; G02C5/00

JP7146453A
JP7508424A

Tsutomu Toyama
Hidemi Matsukura
Yoshiyuki Kawaguchi
Yutaka Nagata

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