Spectacle lens

Patent metadata

Field	Value
Publication number	US-2022390764-A1
Application number	US-202017770021-A
Country	US
Kind code	A1
Filing date	Dec 18, 2020
Priority date	Dec 23, 2019
Publication date	Dec 8, 2022
Grant date	—

Abstract

Provided is an eyeglass lens including: a first region formed such that light transmitted therethrough is focused at a predetermined position in an eye; and a plurality of second regions formed such that light transmitted therethrough is focused at a position defocused from the predetermined position, wherein the plurality of second regions are formed to have a size and an arrangement interval such that light perceived in peripheral vision is perceived as pseudo-focusing at a position other than the predetermined position.

First claim

1 . An eyeglass lens comprising: a first region formed such that light transmitted therethrough is focused at a predetermined position in an eye; and a plurality of second regions formed such that light transmitted therethrough is focused at a position defocused from the predetermined position,
wherein the plurality of second regions are formed to have a size and an arrangement interval such that light perceived in peripheral vision is perceived as pseudo-focusing at a position other than the predetermined position.

2 . The eyeglass lens according to claim 1 , wherein a size and an arrangement interval of the plurality of second regions are set such that an evaluation value using a Gabor function for the transmitted light in the peripheral vision has a maximum value at a position other than the predetermined position.

3 . The eyeglass lens according to claim 1 , wherein a size and an arrangement interval of the plurality of second regions are set such that an evaluation value using a Gabor function for the transmitted light in the peripheral vision has a largest value at a position other than the predetermined position.

4 . The eyeglass lens according claim 1 , wherein a size and an arrangement interval of the plurality of second regions are set such that at least three of the plurality of second regions are arranged within a range of a diameter of a pupil through which the transmitted light passes and such that a graphic formed by connecting reference points of the respective three second regions is an acute-angle triangle.

5 . The eyeglass lens according to claim 1 , wherein D 2 ≤(4K/3)×cos 25° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

6 . The eyeglass lens according to claim 1 , wherein D 2 ≤(4K/3)×cos 45° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

7 . The eyeglass lens according to claim 5 , wherein LP/(60+P)≥0.010 is satisfied, when an interval between adjacent second regions is taken as L, and a power that is given to the second regions is taken as P.

8 . The eyeglass lens according to claim 5 , wherein a power difference ΔP between the plurality of second regions has a largest value of 0.25 or less.

9 . The eyeglass lens according to claim 1 , wherein the plurality of second regions are arranged in a hexagon formation.

10 . An eyeglass lens comprising: a first region formed such that light transmitted therethrough is focused at a predetermined position in an eye; and a plurality of second regions formed such that light transmitted therethrough is focused at a position defocused from the predetermined position,
wherein the plurality of second regions are formed to have a size and an arrangement interval such that at least three of the plurality of second regions are arranged within a range of a diameter of a pupil through which the transmitted light passes and such that a graphic formed by connecting reference points of the respective three second regions is an acute-angle triangle.

11 . The eyeglass lens according to claim 10 , wherein D 2 ≤(4K/3)×cos 25° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

12 . The eyeglass lens according to claim 10 , wherein D 2 ≤(4K/3)×cos 45° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

13 . The eyeglass lens according to claim 11 , wherein LP/(60+P)≥0.010 is satisfied, when an interval between adjacent second regions is taken as L, and a power that is given to the second regions is taken as P.

14 . The eyeglass lens according to claim 11 , wherein a power difference ΔP between the plurality of second regions has a largest value of 0.25 or less.

15 . The eyeglass lens according to claim 12 , wherein LP/(60+P)≥0.010 is satisfied, when an interval between adjacent second regions is taken as L, and a power that is given to the second regions is taken as P.

16 . The eyeglass lens according claim 15 , wherein a power difference ΔP between the plurality of second regions has a largest value of 0.25 or less.

17 . The eyeglass lens according to claim 2 , wherein a size and an arrangement interval of the plurality of second regions are set such that an evaluation value using a Gabor function for the transmitted light in the peripheral vision has a largest value at a position other than the predetermined position.

18 . The eyeglass lens according to claim 17 , wherein a size and an arrangement interval of the plurality of second regions are set such that at least three of the plurality of second regions are arranged within a range of a diameter of a pupil through which the transmitted light passes and such that a graphic formed by connecting reference points of the respective three second regions is an acute-angle triangle.

19 . The eyeglass lens according to claim 18 , wherein D 2 ≤(4K/3)×cos 25° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

20 . The eyeglass lens according to claim 19 , wherein D 2 ≤(4K/3)×cos 45° is satisfied, when a diameter of each of the second regions that are circular in a plan view is taken as D, and an area ratio of the second regions per unit area on the lens surface is taken as K.

Assignees

• Matsuoka Shohei
• Hoya Lens Thailand Ltd

Inventors

• Matsuoka Shohei

Classifications

• G02C7/06 Primary

  bifocal; multifocal {; progressive (G02C7/041 takes precedence)} · CPC title

• G02C7/022 Primary

  Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence) · CPC title

• G02C7/024

  Methods of designing ophthalmic lenses · CPC title

• G02C2202/24

  Myopia progression prevention · CPC title