Color vision correction filter and optical component

Patent metadata

Field	Value
Publication number	US-2020004051-A1
Application number	US-201916441407-A
Country	US
Kind code	A1
Filing date	Jun 14, 2019
Priority date	Jun 28, 2018
Publication date	Jan 2, 2020
Grant date	—

Abstract

A color vision correction filter includes a least one type of dye material and the lowest value of transmittance of the color vision correction filter in a wavelength band ranging from 440 nm to 600 nm, inclusive, is in the range of plus or minus 50 nm of 535 nm.

First claim

What is claimed is:

1 . A color vision correction filter, comprising:
at least one type of dye material, wherein a lowest value of transmittance of the color vision correction filter in a wavelength band ranging from 440 nm to 600 nm, inclusive, is in a range of plus or minus 50 nm of 535 nm.

2 . The color vision correction filter according to claim 1 , wherein
the lowest value of the transmittance of the color vision correction filter in the wavelength band ranging from 440 nm to 600 nm, inclusive, is in a range of plus or minus 30 nm of 535 nm.

3 . The color vision correction filter according to claim 1 , wherein
a bandwidth of a peak that includes the lowest value is at least 30 nm and at most 115 nm for a predetermined value in a range in which the transmittance of the color vision correction filter is at least 40% and at most 60%.

4 . The color vision correction filter according to claim 1 , wherein
a bandwidth of a peak that includes the lowest value is at least 120 nm and at most 175 nm for a predetermined value in a range in which the transmittance of the color vision correction filter is at least 10% and at most 30%.

5 . The color vision correction filter according to claim 1 , wherein
the at least one type of dye material comprises a plural types of dye materials.

6 . The color vision correction filter according to claim 1 , wherein
the at least one type of dye material is a light-absorbing material.

7 . The color vision correction filter according to claim 6 , wherein
the at least one type of dye material has a peak of absorption in a range from 415 nm to 590 nm, inclusive.

8 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 415 nm to 425 nm, inclusive, and a full width at half maximum of the peak is at least 20 nm and at most 45 nm.

9 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 490 nm to 500 nm, inclusive, and a full width at half maximum of the peak is at least 65 nm and at most 110 nm.

10 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 490 nm to 505 nm, inclusive, and a full width at half maximum of the peak is at least 70 nm and at most 105 nm.

11 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 520 nm to 530 nm, inclusive, and a full width at half maximum of the peak is at least 60 nm and at most 130 nm.

12 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 540 nm to 550 nm, inclusive, and a full width at half maximum of the peak is at least 70 nm and at most 125 nm.

13 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 570 nm to 580 nm, inclusive, and a full width at half maximum of the peak is at least 25 nm and at most 80 nm.

14 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 575 nm to 585 nm, inclusive, and a full width at half maximum of the peak is at least 25 nm and at most 100 nm.

15 . The color vision correction filter according to claim 6 , wherein
a dye material included in the at least one type of dye material has a peak of absorption in a range from 580 nm to 590 nm, inclusive, and a full width at half maximum of the peak is at least 45 nm and at most 120 nm.

16 . The color vision correction filter according to claim 1 , wherein
reflectance of the color vision correction filter is at most 15%.

17 . The color vision correction filter according to claim 1 , wherein
the at least one type of dye material has an absorbance of at least 90 and at most 310, and the at least one type of dye material has a basic skeleton of merocyanine, tetraazaporphyrin, or phthalocyanine.

18 . The color vision correction filter according to claim 1 , further comprising:
a base material that contains the at least one type of dye material, wherein the base material includes a polycarbonate-based, cycloolefin-based, or acrylic resin, a total concentration of the at least one type of dye material contained in the base material is at least 20 ppm and at most 850 ppm, the base material has a thickness of at least 1 mm and at most 3 mm, and the base material has a radius of curvature of at least 60 mm and at most 800 mm.

19 . The color vision correction filter according to claim 18 , wherein
the at least one type of dye material is evenly dispersed in the base material.

20 . An optical component, comprising:
the color vision correction filter according to claim 1 .

21 . The optical component according to claim 20 , wherein
the optical component is a pair of eyeglasses, a contact lens, an intraocular lens, or a pair of goggles.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Wada Hideki
• Iwahashi Tomoya
• Yamae Kazuyuki

Classifications

• G02B5/223 Primary

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• G02C7/10

  Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses · CPC title

• G02C7/108 Primary

  Colouring materials · CPC title

• G02C7/104 Primary

  having spectral characteristics for purposes other than sun-protection · CPC title

• C09B47/00

  Porphines; Azaporphines {(non-dyeing compounds C07D487/22)} · CPC title