SPECTACLE LENS, METHOD FOR DESIGNING SPECTACLE LENS, METHOD FOR MANUFACTURING SPECTACLE LENS, AND DEVICE FOR DESIGNING SPECTACLE LENS

WIPO Patent Application WO/2022/138060

A1

A spectacle lens (L1) comprises a first lens section (10) including a first region (11) for seeing an object at a first distance, and a second lens section (20), and the second lens section (20) comprises: a second region (22) in which a refractive index that is higher than the refractive index of the first lens section (10) is distributed, for seeing an object at a second distance less than the first distance; an intermediate region (21) which is disposed above the second region (22) and has a prescribed width (D21) in the vertical direction in a longitudinal cross section including the optical axis (AX) of the spectacle lens (L1), and which has a refractive index gradient component that is positive downward on a certain line connecting at least the first lens section (10) and the second region (22); and a third region (23) which is disposed behind, beside, or below at least the second region (22) between the second region (22) and the first lens section (10), and has a nonuniform refractive index higher than the refractive index of the first lens section (10).

WO/2005/083497	BIFOCAL LENS WITH FAR AND NEAR VISION CORRECTION POWER
WO/1995/025288	ZONED LENS
JP5044557	Photochromic multifocal optical products

YOSHIDA YOSHINORI (JP)

PCT/JP2021/044391

June 30, 2022

December 03, 2021

Click for automatic bibliography generation  

NIKON ESSILOR CO LTD (JP)

G02C7/06

WO2018152596A1

2018-08-30

JP2013526728A	2013-06-24
JP2009540386A	2009-11-19

NISHIZAWA Kazuyoshi et al. (JP)

View/Download PDF      PDF Help

Previous Patent: FIXTURE

Next Patent: JOINT PURCHASE SUPPORT METHOD, PROGRAM, SERVER TERMINAL, AND JOINT PURCHASE SUPPORT SYSTEM