Title:
SPECTACLE LENS DESIGN METHOD, SPECTACLE LENS MANUFACTURING METHOD AND SPECTACLE LENS
Document Type and Number:
Japanese Patent JP2014112154
Kind Code:
A
Abstract:
To design a spectacle lens suitable for a spectacle wearer.
A spectacle lens design method includes the steps of: photographing a spectacle wearer in a far vision state; photographing the spectacle wearer in a near vision state; measuring a far vision parameter relating to a position of an eye in the far vision state on the basis of a far vision image photographed in the far vision state; measuring a near working distance on the basis of a near vision image photographed in the near vision state; and designing a spectacle lens by ray tracing calculation using the far vision parameter, the near working distance, and a spectacle prescription value of the spectacle wearer.
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Inventors:
YOSHIDA YOSHINORI
Application Number:
JP2012266382A
Publication Date:
June 19, 2014
Filing Date:
December 05, 2012
Export Citation:
Assignee:
NIKON ESSILOR CO LTD
International Classes:
G02C7/06; G02C13/00
Domestic Patent References:
JP2007093636A | 2007-04-12 | |||
JP2001145613A | 2001-05-29 | |||
JP2000241118A | 2000-09-08 | |||
JP2010162354A | 2010-07-29 | |||
JP2011227173A | 2011-11-10 |
Foreign References:
WO2010090144A1 | 2010-08-12 |
Attorney, Agent or Firm:
Fuyuki Nagai
Takao Watanabe
Takao Watanabe