Title:
MULTI-RING AND MULTI-FOCAL-LENGTH LENS HAVING WAVY INDIVIDUAL RINGS
Document Type and Number:
WIPO Patent Application WO/2023/016515
Kind Code:
A1
Abstract:
A multi-ring and multi-focal-length lens having wavy individual rings. The lens comprises a main lens region (1) and a concentric circular ring region (2). The concentric circular ring region (2) comprises a plurality of circular rings, wherein the plurality of circular rings are concentrically distributed by taking the center of the lens as the center; the ring band widths between adjacent circular rings are gradually increased from inside to outside; and each circular ring is of a wavy structure (3). The wavy structure (3) comprises crests and troughs, wherein the diopter of the position of each crest is greater than the diopter of the main lens region (1), and the diopter of the position of each trough is less than the diopter of the main lens region (1). By means of the lens, a plurality of focus regions can be provided, such that the fitness of human eyes can be enhanced; and the focal lengths in different rings are different, and the distances of overall imaging on the retina are different, such that the effect of suppressing the progression of refractive errors can be achieved. Moreover, a large number of optimization parameters are more conducive to optimizing the aberration of the whole lens, such that a wearer can distinguish objects better and more clearly, and even if the eyeballs move, the wearer can still see an object clearly by means of observation at different angles, without feeling uncomfortable.
Inventors:
DOU JIANTAI (CN)
Application Number:
PCT/CN2022/111714
Publication Date:
February 16, 2023
Filing Date:
August 11, 2022
Export Citation:
Assignee:
JIANGSU RARE OPTICS CO LTD (CN)
International Classes:
G02C7/06
Foreign References:
| CN88103410A | 1988-12-14 | |||
| US5166712A | 1992-11-24 | |||
| CN113641007A | 2021-11-12 | |||
| CN114755844A | 2022-07-15 | |||
| CN213423626U | 2021-06-11 | |||
| CN104094164A | 2014-10-08 | |||
| JP2012093522A | 2012-05-17 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
Download PDF: