Title:
PROGRESSIVE POWER LENS
Document Type and Number:
WIPO Patent Application WO/2010/044260
Kind Code:
A1
Abstract:
Between a first progressive power lens and a second progressive power lens among a plurality of progressive power lenses, in a case where the distance powers (S) specified by prescription values are equal to each other and not lower than zero, the astigmatic powers (C) specified by the prescription values are equal to each other, and the surface addition powers (ADDb) of reference surfaces are equal to each other, setting is made so that the difference between ∆ADDh and ∆ADDl decreases as the addition power specified by the prescription value increases.
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Inventors:
YANARI MITSUHIRO (JP)
MIZUNO MASATOMO (JP)
UCHIYAMA YUKIMASA (JP)
MIZUNO MASATOMO (JP)
UCHIYAMA YUKIMASA (JP)
Application Number:
PCT/JP2009/005353
Publication Date:
April 22, 2010
Filing Date:
October 14, 2009
Export Citation:
Assignee:
NIKON ESSILOR CO LTD (JP)
YANARI MITSUHIRO (JP)
MIZUNO MASATOMO (JP)
UCHIYAMA YUKIMASA (JP)
YANARI MITSUHIRO (JP)
MIZUNO MASATOMO (JP)
UCHIYAMA YUKIMASA (JP)
International Classes:
G02C7/06
Domestic Patent References:
| WO2008010504A1 | 2008-01-24 | |||
| WO1997019383A1 | 1997-05-29 |
Foreign References:
| JP2008116510A | 2008-05-22 |
Attorney, Agent or Firm:
SHIGA, Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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