Title:
FORWARD BEND CURVE DESIGN METHOD FOR PREPARING RESIN LENS HAVING HIGH REFRACTIVE INDEX
Document Type and Number:
WIPO Patent Application WO/2023/024141
Kind Code:
A1
Abstract:
A forward bend curve design method for preparing a resin lens having a high refractive index. The method comprises: within the range of myopia diopters from -1.00 to -15.00, the maximum designed forward bend curve for the range from -1.00 to -3.50 is -4.00D; the maximum designed forward bend curve for the range from -3.75 to -5.50 is -3.00D; the maximum designed forward bend curve for the range from -5.75 to -8.75 is -2.00D; and the maximum designed forward bend curve for the range from -9.00 to -15.00 is -1.50D. The method is mainly applicable to resin lenses having refractive indexes of 1.60, 1.67 and 1.74, and the maximum designed forward bend curves of the resin lenses are limited, such that the geometric structure and performance of lens forming can be effectively solved, and the sphere diopter error and oblique astigmatism can be reduced to the maximum extent.
Inventors:
WANG CHUANBAO (CN)
FAN HONGBIN (CN)
YAN QINGBO (CN)
DU QIU (CN)
WEN CHUNHONG (CN)
SCHWARTZ KENNY (CN)
FAN HONGBIN (CN)
YAN QINGBO (CN)
DU QIU (CN)
WEN CHUNHONG (CN)
SCHWARTZ KENNY (CN)
Application Number:
PCT/CN2021/116160
Publication Date:
March 02, 2023
Filing Date:
September 02, 2021
Export Citation:
Assignee:
JIANGSU CONANT OPTICAL CO LTD (CN)
SHANGHAI CONANT OPTICAL CO LTD (CN)
SHANGHAI CONANT OPTICAL CO LTD (CN)
International Classes:
G02C7/02; C08G18/38
Foreign References:
| TW201923386A | 2019-06-16 | |||
| CN109696754A | 2019-04-30 | |||
| CN113109894A | 2021-07-13 | |||
| CN102937750A | 2013-02-20 | |||
| US20100157243A1 | 2010-06-24 |
Attorney, Agent or Firm:
BEIJING SICHUANG DACHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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