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Title:
METHOD OF MANUFACTURING LENS
Document Type and Number:
Japanese Patent JP2014145909
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a lens, which is capable of objectively and quantitatively evaluating an influence of roughness a spectacle lens.SOLUTION: The method of manufacturing a lens includes a step of cutting at least one surface of a lens base material and a step of depositing a prescribed coat liquid on at least a partial area of the cut surface to form a hard coat film. The method further includes the steps of: measuring a shape of the cut surface having the hard coat film formed thereon to obtain surface property measurement data; obtaining a shape of roughness of the cut surface on the basis of the surface property measurement data; tracking a light beam in the case of incidence of parallel light on the cut surface on the basis of the shape of roughness; and obtaining a light amount distribution of light transmitted through the lens base material by tracking the light beam, on a virtual plane which is spaced from the lens base material by a prescribed distance and is perpendicular to an optical path of the parallel light.

Inventors:
KUWAMURA YU
TSUKAHARA MASAHIRO
Application Number:
JP2013014410A
Publication Date:
August 14, 2014
Filing Date:
January 29, 2013
Export Citation:
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Assignee:
HOYA CORP
International Classes:
G02C13/00; G01M11/00
Domestic Patent References:
JPH02223813A1990-09-06
JPH05272949A1993-10-22
JP2005324316A2005-11-24
Foreign References:
WO2009016921A12009-02-05
Attorney, Agent or Firm:
Shuhei Matsuoka
Oyama 栄啓