阅读说明：本技术 色觉矫正滤光片以及光学部件 (Color vision correction filter and optical component ) 是由 和田英树 岩桥友也 山江和幸 于 2019-06-26 设计创作，主要内容包括：本申请的色觉矫正滤光片(1)包含一种以上的色素材料(20),色觉矫正滤光片(1)在440nm～600nm的波段内的透射率的最小值为535nm±50nm的范围。(The color vision correction filter (1) comprises one or more color materials (20), and the minimum value of the transmittance of the color vision correction filter (1) in the wavelength range of 440nm to 600nm is 535nm +/-50 nm.)

1. A color vision correction filter comprising one or more color materials, the color vision correction filter having a minimum value of 535nm + -50 nm in transmittance in a wavelength band of 440nm to 600 nm.

2. The color vision correction filter according to claim 1, wherein the minimum value of the transmittance of the color vision correction filter in a wavelength band of 440nm to 600nm is in a range of 535nm ± 30 nm.

3. The color vision correction filter according to claim 1, wherein a bandwidth of a peak including the minimum value is 30nm to 115nm at a specific value in a range of 40% to 60% of the transmittance of the color vision correction filter.

4. The color vision correction filter according to claim 1, wherein a bandwidth of a peak including the minimum value is 120nm to 175nm at a specific value in a range of 10% to 30% of the transmittance of the color vision correction filter.

5. The color vision correction filter according to claim 1, wherein the one or more kinds of pigment materials are a plurality of kinds of pigment materials.

6. The color vision correction filter according to any one of claims 1 to 5, wherein the one or more pigment materials are light-absorbing materials.

7. The color vision correction filter according to claim 6, wherein the one or more kinds of color materials have an absorption peak in a range of 415nm to 590 nm.

8. The color vision correction filter according to claim 6, wherein the first pigment material contained in the one or more pigment materials has an absorption peak in a range of 415nm to 425nm, and a half-value width of the peak is 20nm to 45 nm.

9. The color vision correction filter according to claim 6, wherein the second pigment material contained in the one or more pigment materials has an absorption peak in a range of 490 to 500nm, and a half-value width of the peak is 65 to 110 nm.

10. The color vision correction filter according to claim 6, wherein the third pigment material contained in the one or more pigment materials has an absorption peak in a range of 490 to 505nm, and the peak has a half-value width of 70 to 105 nm.

11. The color vision correction filter according to claim 6, wherein a fourth pigment material contained in the one or more pigment materials has an absorption peak in a range of 520nm to 530nm, and a half-value width of the peak is 60nm to 130 nm.

12. The color vision correction filter according to claim 6, wherein a fifth pigment material contained in the one or more pigment materials has an absorption peak in a range of 540 to 550nm, and a half-value width of the peak is 70 to 125 nm.

13. The color vision correction filter according to claim 6, wherein a sixth pigment material contained in the one or more pigment materials has an absorption peak in a range of 570nm to 580nm, and a half-value width of the peak is 25nm to 80 nm.

14. The color vision correction filter according to claim 6, wherein the seventh pigment material contained in the one or more pigment materials has an absorption peak in a range of 575nm to 585nm, and a half-value width of the peak is 25nm to 100 nm.

15. The color vision correction filter according to claim 6, wherein an eighth pigment material contained in the one or more pigment materials has an absorption peak in a range of 580 to 590nm, and a half-value width of the peak is 45 to 120 nm.

16. The color vision correction filter according to claim 1, wherein a reflectance of the color vision correction filter is 15% or less.

17. The color vision correction filter according to claim 1, wherein the one or more kinds of color materials have an absorbance of 90 to 310,

the basic skeleton of the one or more kinds of pigment materials is a part of cyanine series, tetraazaporphyrin series or phthalocyanine series.

18. The color vision correction filter according to claim 1, comprising a base material containing the one or more kinds of color materials,

the base material is composed of polycarbonate-based, cycloolefin-based or acrylic resin,

the total concentration of the one or more pigment materials contained in the base material is 20ppm to 850ppm,

the thickness of the base material is 1mm to 3mm,

the curvature radius of the base material is 60 mm-800 mm.

19. The color vision correction filter according to claim 18, wherein the one or more kinds of color materials are equally dispersed in the base material.

20. An optical member comprising the color vision correction filter according to any one of claims 1 to 19.

21. The optical component of claim 20, wherein the optical component is a spectacle lens, a contact lens, an intraocular lens, or a goggle.

Technical Field

The present invention relates to a color vision correction filter and an optical component.

Background

Conventionally, there is known a spectacle lens for assisting a color discrimination ability of a color vision disorder person. For example, in the spectacle lens for a color vision disorder described in patent document 1, a partial reflection film having a spectral curve in which the transmittance in a wavelength region corresponding to a color that is difficult to recognize monotonously increases or monotonously decreases is provided on the surface of the lens.

Disclosure of Invention

Problems to be solved by the invention

However, the conventional spectacle lenses for persons with abnormal color vision have a problem of high surface reflectance.

Accordingly, an object of the present invention is to provide a color vision correction filter and an optical member having a surface reflectance lower than that of the conventional color vision correction filter.

Means for solving the problems

In order to achieve the above object, a color vision correction filter according to an aspect of the present invention includes one or more kinds of color materials, and a minimum value of transmittance of the color vision correction filter in a wavelength band of 440nm to 600nm is in a range of 535nm ± 50 nm.

An optical component according to an aspect of the present invention includes the color vision correction filter.

Effects of the invention

According to the present invention, a color vision correction filter and an optical member having a surface reflectance lower than that of the conventional one can be provided.

Drawings

Fig. 1 is a schematic cross-sectional view of a color vision correction filter according to an embodiment.

Fig. 2 is a diagram showing spectral characteristics of eight types of pigment materials that may be included in the color vision correction filter according to the embodiment.

Fig. 3 is a graph showing spectral characteristics of the color vision correction filter of example 1.

Fig. 4 is a graph showing spectral characteristics of two types of pigment materials included in the color vision correction filter of example 1.

Fig. 5 is a graph showing spectral characteristics of the color vision correction filter of example 2.

Fig. 6 is a graph showing spectral characteristics of four pigment materials included in the color vision correction filter of example 2.

Fig. 7 is a graph showing spectral characteristics of the color vision correction filter of example 3.

Fig. 8 is a graph showing spectral characteristics of four pigment materials included in the color vision correction filter of example 3.

Fig. 9 is a graph showing spectral characteristics of the color vision correction filter of example 4.

Fig. 10 is a graph showing spectral characteristics of three pigment materials included in the color vision correction filter of example 4.

Fig. 11 is a graph showing spectral characteristics of the color vision correction filter of example 5.

Fig. 12 is a graph showing spectral characteristics of two types of pigment materials included in the color vision correction filter of example 5.

Fig. 13 is a perspective view of glasses provided with the color vision correction filter according to the embodiment.

Fig. 14 is a perspective view of a contact lens provided with the color vision correction filter according to the embodiment.

Fig. 15 is a plan view of an intraocular lens provided with the color vision correction filter according to the embodiment.

Fig. 16 is a perspective view of goggles provided with the color vision correction filter according to the embodiment.

Description of the symbols

1 color vision correction filter

10 base material

20. 22 pigment material

30 glasses

32 contact lens

34 intraocular lens

36 goggles

Detailed Description

Hereinafter, the color vision correction filter and the optical member according to the embodiment of the present invention will be described in detail with reference to the drawings. The embodiments described below are all specific examples of the present invention. Accordingly, the numerical values, shapes, materials, constituent elements, arrangement and connection of constituent elements, steps, step sequences, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Thus, among the components in the following embodiments, components not recited in the independent claims are described as optional components.

The drawings are schematic and not necessarily strictly illustrated. Therefore, for example, scales and the like in the respective drawings do not always coincide with each other. In the drawings, substantially the same components are denoted by the same reference numerals, and redundant description is omitted or simplified.

(embodiment mode)

[ color vision correction filter ]

First, the configuration of the color vision correction filter according to the embodiment will be described with reference to fig. 1. Fig. 1 is a schematic sectional view of a color vision correction filter 1 according to this embodiment.

As shown in fig. 1, the color vision correction filter 1 includes a base material 10 containing one or more pigment materials. Fig. 1 is a schematic enlarged view showing a part of a cross section of a substrate 10 within a rectangular frame surrounded by a single-dot chain line. For the example shown in fig. 1, the substrate 10 includes two pigment materials 20 and 22.

The substrate 10 is a plate-shaped member having translucency. Specifically, the base 10 is formed by molding a transparent resin material into a predetermined shape. For example, the substrate 10 is made of a polycarbonate-based, cycloolefin-based, or acrylic (PMMA) -based resin. The substrate 10 may be made of a transparent glass material.

The thickness of the substrate 10 is, for example, 1mm to 3 mm. The curvature radius of the base material 10 is 60mm to 800 mm. Alternatively, the radius of curvature of the substrate 10 may be 100mm to 300 mm. At this time, the curvature of the convex surface and the curvature of the concave surface of the substrate 10 may be different. For example, the curvature of the convex surface of the substrate 10 may be smaller than the curvature of the concave surface. The convex and concave surfaces are, for example, spherical surfaces, but may not be completely spherical surfaces. For example, in a cross-sectional view of the substrate 10, the roundness of the convex and concave surfaces may be several micrometers to ten and several micrometers.

The substrate 10 may have a function of condensing or diffusing light such as a convex lens or a concave lens. The size and shape of the substrate 10 are, for example, sizes corresponding to lenses or contact lenses that can be worn by a person.

Further, the size and shape of the substrate 10 are not limited to those described above. The thickness of the substrate 10 may be, for example, less than 1mm or may be greater than 3 mm. The thickness of the substrate 10 may vary depending on the location. That is, the substrate 10 may have a portion with a thin plate thickness and a thick portion. Alternatively, the substrate 10 may be a flat plate having a uniform plate thickness.

The pigment materials 20 and 22 are uniformly dispersed in the base material 10, respectively. For example, the pigment materials 20 and 22 are uniformly dispersed throughout the base material 10. Alternatively, the pigment materials 20 and 22 may be dispersed only in the central region in the plan view of the base material 10. Alternatively, the pigment materials 20 and 22 may be dispersed only in the surface layer portion including the main surface of the substrate 10. The main surface of the substrate 10 is a surface intersecting the thickness direction of the substrate 10, and is, for example, a surface having the largest area. In addition, fig. 1 is a schematic view showing that the pigment materials 20 and 22 are respectively micronized to form aggregated particle bodies and are dispersed in the base material 10 in a molecular state.

The total concentration of the one or more pigment materials 20 and 22 contained in the base material 10 is, for example, 20ppm to 850ppm, but is not limited thereto. The total concentration may be less than 20ppm, or greater than 850 ppm. The total concentration may be adjusted, for example, according to the thickness of the substrate 10.

The pigment materials 20 and 22 are light absorbing materials. Specifically, the pigment materials 20 and 22 absorb light of predetermined wavelength components, respectively. The absorbance of each of the pigment materials 20 and 22 is, for example, 90 to 310. The basic skeleton of the pigment material 20 or 22 is, for example, a partially cyanine system represented by the following general formula (1). Alternatively, the basic skeleton of the pigment material 20 or 22 may be, for example, a porphyrazine system represented by the following general formula (2). The basic skeleton of the coloring material 20 or 22 may be, for example, a phthalocyanine group represented by the following general formula (3). For example, by appropriate pairing of these functional groups (e.g. R of formula (2))₁～R₈At least one of them) is adjusted to obtain a desired spectral characteristic.

The pigment material 20 and the pigment material 22 are different from each other in kind. Specifically, the respective spectral characteristics of the pigment materials 20 and 22 are different. The pigment materials 20 and 22 are, for example, one selected from the pigment materials C1 to C8 shown in fig. 2.

Fig. 2 is a diagram showing spectral characteristics of eight pigment materials C1 to C8 that may be included in the color vision correction filter 1 of the present embodiment. In fig. 2, the horizontal axis represents the wavelength [ nm ], and the vertical axis represents the transmittance [% ]. This is also the same in fig. 3 to 10 described later.

Fig. 2 shows the transmittance at each wavelength of a polycarbonate substrate (hereinafter referred to as a PC substrate) in which a target dye material is uniformly dispersed at a predetermined concentration, as the spectral characteristics of the dye material. The concentration of the pigment material contained is adjusted to a level such that the minimum value of the transmittance becomes about 25% depending on the color material.

As shown in FIG. 2, the dye materials C1 to C8 all have absorption peaks in the range of 415nm to 590 nm. Specifically, the peak wavelengths of the dye materials C1 to C8 located at the maximum absorption peak in the visible light band are all in the range of 415nm to 590 nm. The maximum absorption peak is a peak at which the transmittance in the visible light band reaches a minimum, and the peak wavelength is a wavelength at which the transmittance reaches a minimum. The visible light wave band is 380 nm-780 nm.

The pigment material C1 is an example of a first pigment material having an absorption peak in the range of 415nm to 425nm and a half-value width of the peak of 20nm to 45 nm. Specifically, the pigment material C1 has a peak wavelength of 415nm to 590nm at the maximum absorption peak in the visible light band.

The half-peak width corresponds to the width of the peak at which the transmittance at the peak reaches a middle value of a maximum value (100%) and a minimum value (specifically, the transmittance at the peak wavelength). For example, the minimum value of the transmittance of the pigment material C1 shown in fig. 2 is about 27%, and therefore the half-value width is the width of the peak when the transmittance reaches about 64%, and is about 26 nm. The minimum value of the transmittance at the peak may be adjusted according to the concentration of the pigment material C1 contained in the base material 10. This is also true for the pigment materials C2 to C8.

The pigment material C2 is an example of a second pigment material having an absorption peak in the range of 490 to 500nm and a half-value width of the peak of 65 to 110 nm. Specifically, the pigment material C2 has a peak wavelength of 490 to 500nm at the maximum absorption peak in the visible light band. For example, since the minimum value of the transmittance of the pigment material C2 shown in fig. 2 is about 25%, the half-value width is the width of the peak when the transmittance reaches about 63%, and is about 65 nm.

The pigment material C3 is an example of a third pigment material having an absorption peak in the range of 490 to 505nm and a half-value width of the peak of 70 to 105 nm. Specifically, the pigment material C3 has a peak wavelength of 490 to 505nm at the maximum absorption peak in the visible light band. For example, since the minimum value of the transmittance of the pigment material C3 shown in fig. 2 is about 26%, the half-value width is the width of the peak when the transmittance reaches about 63%, and is about 80 nm.

The pigment material C4 is an example of a fourth pigment material having an absorption peak in the range of 520nm to 530nm and a half-value width of the peak of 60nm to 130 nm. Specifically, the pigment material C4 has a peak wavelength of 520nm to 530nm at the maximum absorption peak in the visible light band. For example, since the minimum value of the transmittance of the pigment material C4 shown in fig. 2 is about 27%, the half-value width is the width of the peak when the transmittance reaches about 64%, and is about 71 nm.

The pigment material C5 is an example of a fifth pigment material having an absorption peak in a range of 540 to 550nm and a half-value width of the peak of 70 to 125 nm. Specifically, the pigment material C5 has a peak wavelength of 540nm to 550nm at the maximum absorption peak in the visible light band. For example, the minimum value of the transmittance of the pigment material C5 shown in fig. 2 is about 28%, and therefore the half-width is a peak width at which the transmittance reaches about 64%, and is about 71 nm.

The pigment material C6 is an example of the sixth pigment material having an absorption peak in the range of 570nm to 580nm and a half-value width of the peak of 25nm to 80 nm. Specifically, the pigment material C6 has a peak wavelength of 570nm to 580nm at the maximum absorption peak in the visible light band. For example, the minimum value of the transmittance of the pigment material C6 shown in fig. 2 is about 24%, and thus the half-width is about 72nm, which is the peak width at which the transmittance reaches about 62%.

The pigment material C7 is an example of a seventh pigment material having an absorption peak in the range of 575nm to 585nm and a half-value width of the peak of 25nm to 80 nm. Specifically, the pigment material C7 has a peak wavelength of 575nm to 585nm at the maximum absorption peak in the visible light band. For example, the minimum value of the transmittance of the pigment material C7 shown in fig. 2 is about 26%, and therefore the half-width is about 26nm, which is the peak width when the transmittance reaches about 63%.

The pigment material C8 is an example of the eighth pigment material having an absorption peak in the range of 580 to 590nm and a half-value width of the peak of 45 to 120 nm. Specifically, the pigment material C8 has a peak wavelength of 580 to 590nm at the maximum absorption peak in the visible light band. For example, the minimum value of the transmittance of the pigment material C8 shown in fig. 2 is about 29%, and therefore the half-width is about 52nm, which is the peak width at which the transmittance reaches about 65%.

The color vision correction filter 1 shown in fig. 1 contains one or more pigment materials selected from the eight pigment materials C1 to C8 described above. The color vision correction filter 1 contains one or more kinds of color materials at a predetermined ratio to the resin material constituting the base material 10.

In the present embodiment, the minimum value of the transmittance of the color vision correction filter 1 in the wavelength band of 440nm to 600nm is in the range of 535nm ± 50nm (i.e., in the range of 485nm to 585 nm). More specifically, the minimum value of the transmittance of the color vision correction filter 1 in the wavelength band of 440nm to 600nm is in the range of 535nm ± 30nm (i.e., in the range of 505nm to 565 nm).

In addition, the bandwidth of the peak including the minimum value of the transmittance is 30nm to 115nm at a predetermined value in the range of 40% to 60% of the transmittance of the color vision correction filter 1. Alternatively, the bandwidth of the peak including the minimum value of the transmittance may be 120nm to 175nm at a predetermined value in the range of 10% to 30% of the transmittance of the color vision correction filter 1.

In the present embodiment, the reflectance of the color vision correction filter 1 is 15% or less. Specifically, the reflectance at a wavelength of 535nm is 15% or less. The reflectance of the color vision correction filter 1 may be 15% or less over the entire visible light band.

In the present embodiment, the color vision correction filter 1 realizes a desired spectral spectrum by including a coloring material in the base material 10. That is, since the partial reflection film is not provided on the surface of the substrate 10, the reflectance of the surface can be sufficiently reduced.

A plurality of examples of the color vision correction filter 1 will be described below. The color vision correction filter 1 of each example can correct the color vision of a person with abnormal color vision. The color vision correction filters 1 of the respective embodiments have spectral characteristics different from each other depending on the type and degree of color vision abnormality.

[ example 1]

First, example 1 will be described.

Fig. 3 is a graph showing spectral characteristics of the color vision correction filter of example 1. The color vision correction filter of example 1 includes two pigment materials, pigment material C4 and pigment material C6.

As shown in fig. 3, the color vision correction filter of example 1 has a peak wavelength of about 525 nm. The transmittance at the peak wavelength is about 15% and reaches the minimum value in the wavelength band of 440nm to 600 nm. The bandwidth at which the transmission reaches 40% is about 55 nm. The bandwidth when the transmittance reached 60% was about 79 nm. In the color vision correction filter of example 1, the peak bandwidth was in the range of about 55nm to about 79nm in the range of 40% to 60% transmittance.

In the color vision correction filter of example 1, polycarbonate was used as the resin material constituting the base material 10. Specifically, the pigment material C4 and the pigment material C6 were mixed at equal concentrations of 30ppm each. The concentration of each color material here corresponds to the design value when the thickness of the base material 10 is set to 1 mm. For example, the concentration is determined in inverse proportion to the thickness of the substrate 10. For example, when the thickness of the base material 10 is 2 times 2mm, the concentration of each of the pigment material C4 and the pigment material C6 becomes 15ppm, which is half. At this time, the transmittance is determined according to lambert-beer law.

Fig. 4 is a graph showing spectral characteristics of two types of pigment materials C4 and C6 contained in the color vision correction filter of example 1. Fig. 4 shows the transmittance (i.e., spectral characteristics) at each wavelength of the PC base material including only the corresponding pigment material in an amount included in the color vision correction filter of example 1. Specifically, fig. 4 shows the spectral characteristics of the PC base material in which the dye material C4 was uniformly dispersed at a concentration of 30ppm and the spectral characteristics of the PC base material in which the dye material C6 was uniformly dispersed at a concentration of 30 ppm.

As shown in fig. 4, in the case of the color vision correction filter of example 1, the transmittance of the pigment material C4 was minimized at a wavelength of about 525nm, and the minimum value was about 28%. Further, the half-width of the peak including the minimum value was about 72 nm.

In addition, in the case of the color vision correction filter of example 1, the transmittance of the pigment material C6 was minimized at a wavelength of about 580nm, and the minimum value thereof was about 87%. Further, the half-width of the peak including the minimum value was about 48 nm.

Further, as can be seen by comparing fig. 2 and 4: the peak wavelength is the same even if the concentration of the pigment material is different. The minimum value of the peak varies depending on the concentration of the pigment material. That is, desired spectral characteristics can be realized by adjusting the type and concentration of the dye material contained in the PC base material.

[ example 2]

Next, example 2 will be explained.

Fig. 5 is a graph showing spectral characteristics of the color vision correction filter of example 2. The color vision correction filter of example 2 includes four pigment materials of a pigment material C1, a pigment material C4, a pigment material C5, and a pigment material C6.

As shown in fig. 5, the peak wavelength of the color vision correction filter of example 2 was about 528 nm. The transmittance at the peak wavelength is about 5% and reaches the minimum value in the wavelength band of 440nm to 600 nm. The bandwidth at which the transmission reached 40% was about 91 nm. In addition, the bandwidth at which the transmittance reaches 60% is about 115 nm. In the color vision correction filter of example 2, the peak bandwidth was in the range of about 91nm to about 115nm in the range of 40% to 60% transmittance.

In the color vision correction filter of example 2, polycarbonate was used as the resin material constituting the base material 10. Specifically, pigment materials C1, C4, C5 and C6 were mixed at a ratio of about 1: 2: 4: 2, were mixed. More specifically, the concentrations of the pigment materials C1, C4, C5 and C6 were set to 15ppm, 30ppm, 60ppm and 30ppm, respectively.

Fig. 6 is a graph showing spectral characteristics of four pigment materials C1, C4, C5, and C6 contained in the color vision correction filter of example 2. Fig. 6 shows the transmittance (i.e., spectral characteristics) at each wavelength of the PC base material including only the corresponding pigment material in an amount included in the color vision correction filter of example 2. Specifically, fig. 6 shows the spectral characteristics of the PC base material in which the pigment material C1 was uniformly dispersed at a concentration of 15ppm, the spectral characteristics of the PC base material in which the pigment material C4 was uniformly dispersed at a concentration of 30ppm, the spectral characteristics of the PC base material in which the pigment material C5 was uniformly dispersed at a concentration of 60ppm, and the spectral characteristics of the PC base material in which the pigment material C6 was uniformly dispersed at a concentration of 30 ppm.

As shown in fig. 6, in the case of the color vision correction filter of example 2, the transmittance of the pigment material C1 was minimized at a wavelength of about 420nm, and the minimum value was about 17%. Further, the half-width of the peak including the minimum value was about 24 nm.

In addition, in the case of the color vision correction filter of example 2, the transmittance of the pigment material C4 was minimized at a wavelength of about 525nm, and the minimum value was about 25%. Further, the half-width of the peak including the minimum value was about 70 nm.

Further, in the case of the color vision correction filter of example 2, the transmittance of the pigment material C5 was minimized at a wavelength of about 545nm, and the minimum value thereof was about 19%. Further, the half-width of the peak including the minimum value was about 75 nm.

In addition, in the case of the color vision correction filter of example 2, the transmittance of the pigment material C6 was minimized at a wavelength of about 575nm, and the minimum value thereof was about 87%. Further, the half-width of the peak including the minimum value was about 45 nm.

[ example 3]

Next, example 3 will be explained.

Fig. 7 is a graph showing spectral characteristics of the color vision correction filter of example 3. The color vision correction filter of example 3 includes four pigment materials of a pigment material C3, a pigment material C5, a pigment material C6, and a pigment material C7.

As shown in fig. 7, the color vision correction filter of example 3 had a peak wavelength in the range of 480nm to 510 nm. The transmittance at the peak wavelength is about 1% and reaches the minimum value in the wavelength band of 440nm to 600 nm. The bandwidth at which the transmission reaches 10% is about 124 nm. In addition, the bandwidth at which the transmittance reaches 30% is about 164 nm. In the color vision correction filter of example 3, the peak bandwidth was in the range of about 124nm to about 164nm in the range of 10% to 30% transmittance.

In the color vision correction filter of example 3, polycarbonate was used as the resin material constituting the base material 10. Specifically, pigment materials C3, C5, C6 and C7 were mixed at a ratio of about 28: 20: 2: 3, and mixing. More specifically, the concentrations of the pigment materials C3, C5, C6, and C7 were set to 424ppm, 303ppm, 30ppm, and 45ppm, respectively.

Fig. 8 is a graph showing spectral characteristics of four pigment materials C3, C5, C6, and C7 contained in the color vision correction filter of example 3. Fig. 8 shows the transmittance (i.e., spectral characteristics) at each wavelength of the PC base material including only the corresponding pigment material in an amount included in the color vision correction filter of example 3. Specifically, fig. 8 shows the spectral characteristics of the PC base material in which the pigment material C3 was uniformly dispersed at a concentration of 424ppm, the spectral characteristics of the PC base material in which the pigment material C5 was uniformly dispersed at a concentration of 303ppm, the spectral characteristics of the PC base material in which the pigment material C6 was uniformly dispersed at a concentration of 30ppm, and the spectral characteristics of the PC base material in which the pigment material C7 was uniformly dispersed at a concentration of 45 ppm.

As shown in fig. 8, in the case of the color vision correction filter of example 3, the transmittance of the pigment material C3 was minimized at a wavelength of about 500nm, and the minimum value was about 3%. Further, the half-width of the peak including the minimum value was about 98 nm.

In addition, in the case of the color vision correction filter of example 3, the transmittance of the pigment material C5 was minimized at a wavelength of about 545nm, and the minimum value thereof was about 0%. Further, the half-width of the peak including the minimum value was about 112 nm.

Further, in the case of the color vision correction filter of example 3, the transmittance of the pigment material C6 was minimized at a wavelength of about 575nm, and the minimum value thereof was about 49%. Further, the half-width of the peak including the minimum value was about 55 nm.

In addition, in the case of the color vision correction filter of example 3, the transmittance of the pigment material C7 was minimized at a wavelength of about 580nm, and the minimum value thereof was about 45%. Further, the half-width of the peak including the minimum value was about 25 nm.

[ example 4]

Next, example 4 will be explained.

Fig. 9 is a graph showing spectral characteristics of the color vision correction filter of example 4. The color vision correction filter of example 4 includes three pigment materials of a pigment material C3, a pigment material C5, and a pigment material C8.

As shown in fig. 9, the color vision correction filter of example 4 had a peak wavelength in the range of 480nm to 510 nm. The transmittance at the peak wavelength is about 1% and reaches the minimum value in the wavelength band of 440nm to 600 nm. The bandwidth at which the transmission reaches 10% is about 108 nm. In addition, the bandwidth at which the transmittance reaches 30% is about 150 nm. In the color vision correction filter of example 4, the peak bandwidth was in the range of about 108nm to about 150nm in the range of 10% to 30% transmittance.

In the color vision correction filter of example 4, polycarbonate was used as the resin material constituting the base material 10. Specifically, pigment materials C3, C5, and C8 were mixed at a ratio of about 14: 10: 3, and mixing. More specifically, the concentrations of the pigment materials C3, C5, and C8 were set to 424ppm, 303ppm, and 90ppm, respectively.

Fig. 10 is a graph showing spectral characteristics of three pigment materials C3, C5, and C8 contained in the color vision correction filter of example 4. Fig. 10 shows the transmittance (i.e., spectral characteristics) at each wavelength of the PC base material including only the corresponding pigment material in an amount included in the color vision correction filter of example 4. Specifically, fig. 10 shows the spectral characteristics of the PC base material in which the pigment material C3 was uniformly dispersed at a concentration of 424ppm, the spectral characteristics of the PC base material in which the pigment material C5 was uniformly dispersed at a concentration of 303ppm, and the spectral characteristics of the PC base material in which the pigment material C8 was uniformly dispersed at a concentration of 90 ppm.

As shown in fig. 10, in the case of the color vision correction filter of example 4, the transmittance of the pigment material C3 was minimized at a wavelength of about 500nm, and the minimum value was about 5%. Further, the half-width of the peak including the minimum value was about 95 nm.

In addition, in the case of the color vision correction filter of example 4, the transmittance of the pigment material C5 was minimized at a wavelength of about 545nm, and the minimum value thereof was about 0%. Further, the half-width of the peak including the minimum value was about 112 nm.

Further, in the case of the color vision correction filter of example 4, the transmittance of the pigment material C8 was minimized at a wavelength of about 585nm, and the minimum value thereof was about 20%. Further, the half-width of the peak including the minimum value was about 56 nm.

[ example 5]

Next, example 5 will be explained.

Fig. 11 is a graph showing spectral characteristics of the color vision correction filter of example 5. The color vision correction filter of example 5 includes two pigment materials, pigment material C2 and pigment material C4.

As shown in fig. 11, the color vision correction filter of example 5 has a peak wavelength in the range of 460nm to 540 nm. The transmittance at the peak wavelength is about 0% and reaches the minimum value in the wavelength band of 440nm to 600 nm. The bandwidth at which the transmission reaches 10% is about 112 nm. The bandwidth when the transmittance reached 30% was about 129 nm. In the color vision correction filter of example 5, the peak bandwidth was in the range of about 112nm to about 129nm in the range of 10% to 30% transmittance.

The color vision correction filter of example 5 uses a polycarbonate substrate as the resin material constituting the substrate 10. Specifically, pigment materials C2 and C4 were mixed at a ratio of about 7: 10, were mixed. More specifically, the concentrations of the pigment materials C2 and C4 were set to 212ppm and 303ppm, respectively.

Fig. 12 is a graph showing spectral characteristics of two types of pigment materials C2 and C4 contained in the color vision correction filter of example 5. Fig. 12 shows the transmittance (i.e., spectral characteristics) at each wavelength of the PC base material including only the corresponding pigment material in an amount included in the color vision correction filter of example 5. Specifically, fig. 12 shows the spectral characteristics of the PC base material in which the dye material C2 was uniformly dispersed at a concentration of 212ppm and the spectral characteristics of the PC base material in which the dye material C4 was uniformly dispersed at a concentration of 303 ppm.

As shown in fig. 12, in the case of the color vision correction filter of example 5, the transmittance of the pigment material C2 was minimized at a wavelength ranging from about 460nm to 520nm, and the minimum value was about 0%. Further, the half-width of the peak including the minimum value was about 118 nm.

In the color vision correction filter of example 5, the transmittance of the pigment material C4 was minimized in the wavelength range of about 470nm to 570nm or less, and the minimum value was about 0%. Further, the half-width of the peak including the minimum value was about 134 nm.

[ optical component ]

The color vision correction filter 1 is used for various optical components.

Fig. 13 to 16 are diagrams showing examples of optical members provided with the color vision correction filter 1 according to the present embodiment. Specifically, fig. 13, 14, and 16 are perspective views of a pair of spectacles 30, a pair of contact lenses 32, and a pair of goggles 36, which are examples of optical components. Fig. 15 is a plan view of intraocular lens 34 as an example of an optical component. For example, as shown in the figures, glasses 30, contact lenses 32, intraocular lenses 34, and goggles 36 are provided with color vision correction filters 1.

For example, the eyeglasses 30 include two color vision correction filters 1 as left and right lenses. The contact lens 32 and the intraocular lens 34 may be the color vision correction filter 1 as a whole. Alternatively, only the central portions of the contact lens 32 and the intraocular lens 34 may be the color vision correction filter 1. The goggles 36 are provided with one color vision correction filter 1 as a protective lens (cover lens) for covering both eyes.

The optical member provided with the color vision correction filter 1 is not limited to the glasses 30. For example, the optical member may be a sun visor of a vehicle. That is, the optical component may not be a component worn by a person.

[ Effect and the like ]

As described above, the color vision correction filter 1 of the present embodiment includes one or more kinds of color materials. The minimum value of the transmittance of the color vision correction filter 1 in the wavelength range of 440nm to 600nm is 535nm ± 50 nm.

This makes it possible to suppress transmission of a wavelength component (green light) centered around 535nm by the color vision correction filter 1. A normal color anomaly person is congenital red-green color anomaly, and senses green light more strongly than red light. Since the color vision correction filter 1 can suppress the transmission of green light, it is possible to maintain the perceived balance between red light and green light, and to correct the color vision.

Further, the color vision correction filter 1 contains a pigment material to suppress the transmission of green light. That is, since a partially reflective film or the like may not be provided on the surface as in the conventional case, the reflectance at the surface can be reduced. Therefore, according to the present embodiment, the color vision correction filter 1 having a surface reflectance lower than that of the conventional color vision correction filter can be realized.

The minimum value of the transmittance of the color vision correction filter 1 in the wavelength range of 440nm to 600nm is, for example, 535nm ± 30 nm.

This can suppress the transmission of green light, and therefore, the color sense can be corrected while maintaining the perceptual balance between red light and green light.

For example, at a specific value in the range of 40% to 60% of the transmittance of the color vision correction filter 1, the bandwidth of the peak including the minimum value is 30nm to 115 nm.

This makes it possible to perform appropriate color vision correction according to the type and degree of color vision abnormality.

For example, in a specific value in the range of 10% to 30% of the transmittance of the color vision correction filter 1, the bandwidth of the peak including the minimum value may be 120nm to 175 nm.

This makes it possible to perform appropriate color vision correction according to the type and degree of color vision abnormality.

The one or more pigment materials are, for example, a plurality of pigment materials. That is, the color vision correction filter 1 may contain a plurality of pigment materials.

Thus, by appropriately adjusting the type and concentration of the color material, the color vision correction filter 1 having desired spectral characteristics can be realized. Therefore, appropriate color vision correction can be performed according to the type and degree of color vision abnormality.

For example, more than one pigment material has an absorption peak in the range of 415nm to 590 nm. The first coloring material contained in the one or more coloring materials has an absorption peak in a range of 415nm to 425nm, for example, and the half-value width of the peak is 20nm to 45 nm. The second pigment material contained in the one or more pigment materials has an absorption peak in a range of, for example, 490 to 500nm, and the half-value width of the peak is 65 to 110 nm. The third pigment material contained in the one or more pigment materials has an absorption peak in a range of, for example, 490 to 505nm, and the half-value width of the peak is 70 to 105 nm. The fourth pigment material contained in the one or more pigment materials has an absorption peak in a range of 520 to 530nm, for example, and the half-value width of the peak is 60 to 130 nm. The fifth coloring material contained in the one or more coloring materials has an absorption peak in a range of 540 to 550nm, for example, and the half-value width of the peak is 70 to 125 nm. The sixth pigment material contained in the one or more pigment materials has an absorption peak in a range of, for example, 570 to 580nm, and the half-value width of the peak is 25 to 80 nm. The seventh coloring material contained in the one or more coloring materials has an absorption peak in a range of, for example, 575 to 585nm, and the half-value width of the peak is 25 to 100 nm. The eighth pigment material contained in the one or more pigment materials has an absorption peak in a range of, for example, 580 to 590nm, and the half-value width of the peak is 45 to 120 nm.

By including such one or more color materials selected from among the plurality of color materials, it is possible to realize the color vision correction filter 1 capable of performing appropriate color vision correction according to the type and degree of color vision abnormality.

The one or more pigment materials are, for example, light absorbing materials.

This can suppress the light whose transmission is suppressed from being reflected and returned, and thus can further reduce the reflectance of the color vision correction filter.

The reflectance of the color vision correction filter 1 is, for example, 15% or less.

This enables the color vision correction filter to have sufficiently low reflectance.

The absorbance of the one or more kinds of color materials is, for example, 90 to 310. The basic skeleton of one or more kinds of the pigment materials is a part of cyanine series, tetraazaporphyrin series or phthalocyanine series.

The color vision correction filter 1 includes, for example, a base material 10 containing one or more pigment materials. The substrate 10 is made of a polycarbonate-based, cycloolefin-based, or acrylic resin. The total concentration of the one or more color materials contained in the base material 10 is 20ppm to 850 ppm. The thickness of the substrate 10 is 1mm to 3 mm. The curvature radius of the base material 10 is 60mm to 800 mm.

In addition, the one or more color materials are, for example, uniformly dispersed in the base material 10.

The optical member of the present embodiment includes, for example, the color vision correction filter 1. For example, the optical component is a lens 30, a contact lens 32, an intraocular lens 34, or a goggle 36.

This can be realized as an optical member wearable by a person such as the eyeglasses 30. For example, according to the present embodiment, glasses 30 including the color vision correction filter 1 as a lens can be realized. Here, if glasses having a high surface reflectance are worn, the eyes of the wearer may be hidden and become difficult to see, and the expression may be difficult to understand, which may cause an obstacle to the daily conversation. On the other hand, since the color vision correction filter 1 has a low surface reflectance, a conversation can be performed while seeing the eyes of the person wearing the glasses 30, and discomfort in daily life can be reduced.

(others)

The color vision correction filter and the optical member of the present invention have been described above based on the above embodiments, but the present invention is not limited to the above embodiments.

For example, although the above embodiment shows eight pigment materials C1 to C8, the pigment materials included in the color vision correction filter 1 are not limited to these. The color vision correction filter 1 may contain a different type of pigment material from the pigment materials C1 to C8.

In addition, although the color vision correction filter 1 including two to four kinds of pigment materials is shown as examples 1 to 4 in the above embodiment, the number of kinds of pigment materials included in the color vision correction filter 1 is not limited to these. The color vision correction filter 1 may contain only one kind of pigment material, or may contain five or more kinds of pigment materials.

In addition, the above embodiments show examples in which the basic skeleton of the pigment material is a part of cyanine system or tetraazaporphyrin system, but the present invention is not limited thereto. Any pigment material may be used as long as it has the spectral characteristics described above.

In addition, the present invention includes a configuration in which various modifications that occur to those skilled in the art are implemented in each embodiment, and a configuration in which constituent elements and functions in each embodiment are arbitrarily combined without departing from the scope of the present invention.