Title:
SPECTACLE LENS
Document Type and Number:
WIPO Patent Application WO/2021/186878
Kind Code:
A1
Abstract:
Provided are a spectacle lens and related techniques thereof, the lens comprising: a base region that causes a luminous flux entering from the surface on the object side to be emitted from the surface on the eyeball side and to be converged through an eye onto a position A on the retina; and a plurality of defocus regions in contact with the base region. The defocus regions each include a first portion and a second portion. The first portion has a refractive power in a range of ±0.12 D of the refractive power in the base region. A luminous flux that has passed through the second portion of the defocus region enters the position A as diverging light.
Inventors:
QI HUA (JP)
Application Number:
PCT/JP2021/001522
Publication Date:
September 23, 2021
Filing Date:
January 18, 2021
Export Citation:
Assignee:
HOYA LENS THAILAND LTD (TH)
QI HUA (JP)
QI HUA (JP)
International Classes:
G02C7/06
Domestic Patent References:
| WO2020004552A1 | 2020-01-02 | |||
| WO2020004551A1 | 2020-01-02 |
Foreign References:
| JP2020016886A | 2020-01-30 | |||
| CN104678572A | 2015-06-03 | |||
| US20120062836A1 | 2012-03-15 | |||
| US20170131567A1 | 2017-05-11 |
Other References:
See also references of EP 4123362A4
Attorney, Agent or Firm:
FUKUOKA Masahiro et al. (JP)
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