JP6035152B2 - Color vision correction glasses - Google Patents
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Description
この発明は、色覚異常者の色覚を補正する色覚補正メガネに関する。 The present invention relates to color vision correction glasses that correct the color vision of a person with color vision deficiency.
本発明者は、色覚異常者の色覚を色覚正常者の色覚に近づけるべく補正する色覚補正メガネを製造販売しており、多数の色覚異常者がこの色覚補正メガネを利用するに至っている。 The present inventor manufactures and sells color vision correction glasses that correct the color vision of a person with color vision deficiency so as to approach the color vision of a person with normal color vision, and many color vision deficient persons have come to use these color vision correction glasses.
この色覚補正メガネは、色覚異常者の３種の錘状体視細胞の何れかが、他の錘状体視細胞より感度が相対的に強いことが色覚異常の原因であるとする理論に基づいている。即ち、当該色覚補正レンズは、色覚異常者が相対的に強く感じる光の透過率を抑えることで、色覚異常者の色覚を正常者の色覚に近づけるものである（特許文献１参照）。 These color vision correction glasses are based on the theory that one of the three types of pyramidal photoreceptor cells of a person with color vision deficiency is relatively more sensitive than the other pyramidal photoreceptor cells, which is the cause of the color vision deficiency. ing. That is, the color vision correction lens brings the color vision of a color blind person closer to that of a normal person by suppressing the light transmittance that the color vision deficient person feels relatively strongly (see Patent Document 1).
ところが、当該色覚補正レンズは、色覚異常者が強く感じる光の透過率を押えるためにレンズを透過する光が減少して視界が暗くなり、夕暮れ時等には視力が利かなくなるという不都合が有った。 However, the color vision correction lens has the inconvenience that the light transmitted through the lens is reduced to suppress the light transmittance strongly felt by a person with color vision deficiency, and the field of vision becomes dark, resulting in poor eyesight at dusk. It was.
そこで、本発明者は、一方のレンズのみに色覚補正レンズを用い、他方のレンズには色覚異常者がレンズを通して感じる明るさが色覚補正レンズを通して感じる明るさより大きい色覚明度向上レンズを用いた色覚補正メガネを提案している（特許文献２参照）。このレンズは、色覚異常者が色覚明度向上レンズで感じた明るさを、脳内にて色覚補正レンズで感じた明るさに置き換えることより、色覚異常者の視界が暗くなるのを抑制するものである。 Therefore, the present inventor uses a color vision correction lens for only one lens, and color vision correction using a color vision improving lens for the other lens, in which the brightness felt through the lens by a color blind person is greater than the brightness felt through the color vision correction lens. We are proposing glasses (see Patent Document 2). This lens suppresses the darkening of the vision of a person with color vision deficiency by replacing the brightness felt by the color vision deficiency lens with the brightness felt by the color vision correction lens in the brain. is there.
しかし、特許文献２に係る色覚補正メガネは、両方のレンズの色が大きく異なり、人前では使用しづらいという不都合があった。
本発明は、上記課題に鑑みてなされたものであり、色覚補正レンズと色覚明度向上レンズの色が近く、人前でも使用しやすい色覚補正メガネの提供を目的とする。
However, the color vision correction glasses according to Patent Document 2 have a disadvantage that the colors of both lenses are significantly different and it is difficult to use in public.
The present invention has been made in view of the above problems, and an object of the present invention is to provide color vision correction glasses in which the colors of the color vision correction lens and the color vision improvement lens are close to each other and are easy to use even in public.
上記課題を解決するためになされた発明は、光の波長が４４０ｎｍから大きくなるにつれて透過率が減少して最小値に達したのち光の波長が６００ｎｍまで大きくなるにつれて透過率が増加する透過率曲線を有する複数等級のレンズを含むＡＢ類のレンズ郡、光の波長が４４０ｎｍから大きくなるにつれて透過率が減少し最小値に達したのち光の波長が６００ｎｍまで大きくなるにつれて透過率が増加するとともに当該透過率の最小値が５０％以上である透過率曲線を有する複数等級のレンズを含むＣ類のレンズ郡、及び光の波長が４４０ｎｍから６００ｎｍまでの範囲で略右上がり形状の透過率曲線を有する複数等級のレンズ郡を含むＤ類のレンズ郡からなる３類のレンズ郡より選択された色覚補正レンズと、前記色覚補正レンズと同類のレンズ郡から選択された明度向上レンズと、を備え、前記明度向上レンズは、前記色覚補正レンズより視感透過率が大きい色覚補正メガネである。 The invention made to solve the above problems is a transmittance curve in which the transmittance decreases as the wavelength of light increases from 440 nm and reaches the minimum value, and then increases as the wavelength of light increases to 600 nm. A group of AB lenses including multiple grade lenses having a transmittance, the transmittance decreases as the wavelength of light increases from 440 nm, reaches the minimum value, and then increases as the wavelength of light increases to 600 nm. It has a class C lens group including multiple grade lenses having a transmittance curve with a minimum transmittance of 50% or more, and a transmittance curve having a substantially upward-sloping shape in the range of light wavelengths from 440 nm to 600 nm. The The brightness improving lens is color vision correction glasses having a higher visual transmittance than the color vision correction lens.
本発明の色覚補正メガネでは、片方のレンズに当該メガネを使用する色覚異常者が最もよく色の判別を行うことができる類のレンズである色覚補正レンズを用い、他方のレンズに色覚補正レンズより視感透過率の大きい明度向上レンズを用いることで、両目用のレンズとして共に色覚異常者が最もよく色の判別を行うことができるレンズを使用する場合に比べて、色覚異常者が感じる明るさを向上させることができる。また、明度向上レンズと色覚補正レンズとを、ＡＢ類、Ｃ類及びＤ類の３類のうちの同類のレンズとすることで、色覚補正レンズと明度向上レンズの外観差を抑制することができる。 In the color vision correction glasses of the present invention, a color vision correction lens, which is a type of lens that allows a person with color vision deficiency who uses the glasses to discriminate colors best, is used for one lens, and a color vision correction lens is used for the other lens. By using a brightness-enhancing lens with a large visual transmissivity, the brightness felt by a color-blind person is compared to the case of using a lens for both eyes that allows a color-blind person to discriminate colors best. Can be improved. Further, by using the brightness improving lens and the color vision correction lens as the same type of lenses among the three types AB, C and D, it is possible to suppress the difference in appearance between the color vision correction lens and the color vision correction lens. ..
本発明は、前記ＡＢ類のレンズ郡が、Ａ類のレンズ郡とＢ類のレンズ郡とからなり、前記Ａ類のレンズは、波長４４０ｎｍの光の透過率が４０％以上となるよう形成され、前記Ｂ類のレンズは、波長４４０ｎｍの光の透過率が４０％未満であるとともに、Ｂ類に含まれる異なる等級のレンズは、波長４４０ｎｍの光の透過率と波長６００ｎｍの光の透過率の大小関係が逆に成るよう形成されており、前記色覚補正レンズがＢ類のレンズ郡より選択され、前記明度向上レンズがＡ類のレンズ郡より選択された色覚補正メガネを含む。このように、Ｂ類のレンズは、異なる等級のレンズが光の波長４４０ｎｍにおける透過率と光の波長６００ｎｍにおける透過率の大小関係が逆になるため、各等級で視感透過率がほとんど変化しない。このため、色覚補正レンズとしてＢ類のレンズが最適であるとされた際には、明度向上レンズとしてＡ類のレンズを用いることで使用者が感じる明度を向上させることができる。 In the present invention, the lens group of the AB class is composed of the lens group of the A class and the lens group of the B class, and the lens of the A class is formed so that the transmission rate of light having a wavelength of 440 nm is 40% or more. The class B lenses have a light transmittance of less than 40% at a wavelength of 440 nm, and the lenses of different grades included in the class B have a light transmittance of a wavelength of 440 nm and a light transmittance of a wavelength of 600 nm. It is formed so that the magnitude relationship is reversed, and the color vision correction lens is selected from the lens group of class B, and the brightness improving lens includes color vision correction glasses selected from the lens group of class A. In this way, in the B-class lenses, the magnitude relationship between the transmittance at the light wavelength of 440 nm and the transmittance at the light wavelength of 600 nm is reversed for lenses of different grades, so that the visible transmittance hardly changes in each grade. .. Therefore, when it is considered that the B-class lens is the most suitable as the color vision correction lens, the brightness felt by the user can be improved by using the A-class lens as the brightness improving lens.
ここで、透過率が「増加する」若しくは「減少する」とは、多少増減しながら増加又は減少する場合を含むものとする。 Here, the term "increasing" or "decreasing" the transmittance includes a case where the transmittance increases or decreases while slightly increasing or decreasing.
以上説明したように、本発明の色覚補正メガネによれば、色覚補正メガネのデザイン性を損なうことなく当該メガネを使用する色覚異常者が感じる明るさを向上させることができる。 As described above, according to the color vision correction glasses of the present invention, it is possible to improve the brightness felt by a color blind person who uses the glasses without impairing the design of the color vision correction glasses.
次に、適宜図面を参照しながら本発明に係る色覚補正メガネの実施形態について詳述する。本発明の色覚補正メガネは、色覚異常者の色覚を補正する色覚補正レンズと色覚異常者が感じる明るさを向上させる明度向上レンズとを備えている。
尚、本発明の色覚補正メガネは以下の実施の形態に限られるものではない。また、色覚補正レンズと明度向上レンズを総称して単に「レンズ」ともいうものとする。
Next, an embodiment of the color vision correction glasses according to the present invention will be described in detail with reference to the drawings as appropriate. The color vision correction glasses of the present invention include a color vision correction lens that corrects the color vision of a color blind person and a brightness improving lens that improves the brightness felt by the color vision deficient person.
The color vision correction glasses of the present invention are not limited to the following embodiments. Further, the color vision correction lens and the brightness improving lens are collectively referred to as a "lens".
色覚補正レンズ、及び明度向上レンズは、図１乃至図４のグラフに模式的に示したような透過率曲線を有している。図１乃至図４のグラフは、それぞれＡ類、Ｂ類、Ｃ類、及びＤ類のレンズの透過率曲線を示しており、各類は、少しずつ透過率曲線の形状の異なる８つのレンズ郡からなる。Ａ類とＢ類のレンズは、透過率曲線の形状が類似するため、合わせてＡＢ類のレンズと称するものとする。 The color vision correction lens and the brightness improving lens have a transmittance curve as schematically shown in the graphs of FIGS. 1 to 4. The graphs of FIGS. 1 to 4 show the transmittance curves of the A, B, C, and D lenses, respectively, and each of the eight lens groups having a slightly different shape of the transmittance curve. Consists of. Since the lenses of class A and class B have similar shapes of the transmittance curves, they are collectively referred to as class AB lenses.
ＡＢ類のレンズ郡は、光の波長が４４０ｎｍから大きくなるにつれて透過率が減少して最小値に達したのち光の波長が６００ｎｍまで大きくなるにつれて透過率が増加する透過率曲線を有している。ＡＢ類のレンズ郡のうち、Ａ類のレンズ郡は、図１に示すように、光の波長が４４０ｎｍにおける透過率が４０％以上となるように形成されたＡ１からＡ８までの８等級のレンズからなる。 The AB lens group has a transmittance curve in which the transmittance decreases as the wavelength of light increases from 440 nm and reaches the minimum value, and then increases as the wavelength of light increases to 600 nm. .. Of the AB lens groups, the A lens group is an 8th grade lens from A1 to A8 formed so that the transmittance at a wavelength of light of 440 nm is 40% or more, as shown in FIG. Consists of.
ＡＢ類のレンズ郡のうち、Ｂ類のレンズ郡は、図２に示したように、光の波長４４０ｎｍにおける透過率が４０％未満となるよう形成されたＢ１からＢ８までの８等級のレンズからなる。Ｂ類に含まれる異なる等級のレンズは、図２に示すように、光の波長４４０ｎｍにおける透過率と光の波長６００ｎｍにおける透過率の大小関係が逆になるよう形成されている。 Of the AB lens groups, the B lens group consists of 8th grade lenses from B1 to B8 formed so that the transmittance at a light wavelength of 440 nm is less than 40%, as shown in FIG. Become. As shown in FIG. 2, the lenses of different grades included in Class B are formed so that the magnitude relationship between the transmittance at a light wavelength of 440 nm and the transmittance at a light wavelength of 600 nm is reversed.
Ｃ類のレンズ郡は、図３に示すように、Ｃ１からＣ８までの８等級のレンズからなり、光の波長が４４０ｎｍから大きくなるにつれて透過率が減少して最小値に達したのち、光の波長が６００ｎｍまで大きくなるにつれて透過率が増加する透過率曲線を有している。Ｃ類の各レンズの波長４４０ｎｍから６００ｎｍまでの透過率曲線における透過率の最小値は５０％以上である。 As shown in FIG. 3, the C-class lens group consists of 8th grade lenses from C1 to C8, and the transmittance decreases as the wavelength of light increases from 440 nm to reach the minimum value, and then the light becomes It has a transmittance curve in which the transmittance increases as the wavelength increases to 600 nm. The minimum value of the transmittance in the transmittance curve from the wavelength of 440 nm to 600 nm of each lens of Class C is 50% or more.
Ｄ類のレンズは、図４に示すように、Ｄ１からＤ８までの８等級のレンズからなり、光の波長が４４０ｎｍから６００ｎｍまでの範囲で略右上がり形状の透過率曲線を有している。 As shown in FIG. 4, the D-class lens is composed of 8th magnitude lenses from D1 to D8, and has a transmittance curve having a substantially upward-sloping shape in a light wavelength range of 440 nm to 600 nm.
次に、レンズの製造方法について説明する。表１乃至表４は、Ａ〜Ｄ類のレンズの透過率分布の設計値の一例を示している。各分類のレンズは、表１乃至表４に示した透過率から所定の許容範囲（例えば、設計値±５％）を満たすように、かつ図１乃至図４に示した模式図と近似の形状となることをねらって製造される。 Next, a method for manufacturing a lens will be described. Tables 1 to 4 show an example of the design values of the transmittance distribution of the lenses A to D. The lenses of each category have a shape similar to the schematic diagram shown in FIGS. 1 to 4 so as to satisfy a predetermined allowable range (for example, design value ± 5%) from the transmittance shown in Tables 1 to 4. Manufactured with the aim of becoming.
レンズに、所望の透過率曲線を付与する方法としては、レンズ生地を着色する方法、部分反射膜を設ける方法、着色と部分反射膜とを併用する方法を用いることができる。
レンズ生地を着色する方法は、特に限定されず、レンズ生地表面に着色を行ってもよいし、レンズ生地をモノマーから重合する際に染料や顔料を配合することによりレンズ生地自体を着色してもよい。レンズ生地表面に着色を行う場合は、所望の透過率曲線をより精度よく形成するために、グラディエーション状に行ってもよい。また、着色を行う前にハードコート被膜を設けてもよい。
As a method of imparting a desired transmittance curve to the lens, a method of coloring the lens fabric, a method of providing a partial reflection film, and a method of using the coloring and the partial reflection film in combination can be used.
The method of coloring the lens fabric is not particularly limited, and the surface of the lens fabric may be colored, or the lens fabric itself may be colored by blending a dye or a pigment when polymerizing the lens fabric from a monomer. Good. When coloring the surface of the lens fabric, it may be performed in a gradient shape in order to form a desired transmittance curve with higher accuracy. Further, a hard coat film may be provided before coloring.
部分反射膜は、真空蒸着法、イオンプレーティング法、スパッタリング法等により形成することができる。部分反射膜は、単層又は多層のいずれにしてもよい。 The partially reflective film can be formed by a vacuum vapor deposition method, an ion plating method, a sputtering method, or the like. The partial reflective film may be either a single layer or a multilayer.
ハードコート被膜を形成する方法は、特に限定されないが、例えば、レンズ生地表面にシリコーン系のハードコート液を塗布した後に熱処理をして、ハードコート液を硬化させる方法を用いることができる。ハードコート被膜の上に部分反射層を形成する場合は、酸処理やアルカリ処理、紫外線照射処理、プラズマ処理、イオンビーム照射等のいずれかの方法により、ハードコート被膜表面の処理を行うことが好ましい。 The method for forming the hard coat film is not particularly limited, and for example, a method can be used in which a silicone-based hard coat liquid is applied to the surface of the lens fabric and then heat-treated to cure the hard coat liquid. When a partially reflective layer is formed on the hard coat film, it is preferable to treat the surface of the hard coat film by any method such as acid treatment, alkali treatment, ultraviolet irradiation treatment, plasma treatment, and ion beam irradiation. ..
レンズの製造を完了すると、同一ロットのレンズからサンプルを抽出して、標準光源Ｄ６５について、透過率測定器（例えば、株式会社村上色彩技術研究所製の高速積分球式分光透過率測定器「ＤＯＴ−３Ｃ」）を用いて光線透過率の測定を行い、ＪＩＳＴ７３３０（２０００）に準拠して視感透過率を算出する。
本実施形態では、各類のレンズとも、１等級から８等級にかけて視感透過率が順次低下するよう設計されている。ただし、Ｂ類のレンズは、異なる等級のレンズが光の波長４４０ｎｍにおける透過率と光の波長６００ｎｍにおける透過率の大小関係が逆になるため、各等級で視感透過率がほとんど変わらない値となっている。
When the production of the lens is completed, a sample is extracted from the same lot of lenses, and the standard light source D65 is subjected to a transmittance measuring device (for example, a high-speed integrating sphere type spectral transmittance measuring device “DOT” manufactured by Murakami Color Technology Laboratory Co., Ltd.). The light transmittance is measured using -3C "), and the visual transmittance is calculated in accordance with JIST7330 (2000).
In the present embodiment, each type of lens is designed so that the visual transmittance gradually decreases from the 1st grade to the 8th grade. However, in the case of class B lenses, the magnitude relationship between the transmittance at a light wavelength of 440 nm and the transmittance at a light wavelength of 600 nm is reversed for lenses of different grades, so that the visible transmittance is almost the same for each grade. It has become.
次に、色覚補正メガネの使用者に適合したレンズを選択する方法について説明する。レンズを購入しようとする色覚異常者が、検査により、Ａ類の色覚補正メガネが最適であると判断された場合は、明度向上レンズとしてもＡ類のレンズを用いる。例えば、表１に示したＡ６の透過率曲線を有するレンズ（以下「Ａ６レンズ」のように言う。）が色覚補正レンズとして最適であるいう検査結果が出た場合、色覚補正レンズとしてＡ６レンズを選択し、明度向上レンズとして、Ａ６レンズよりも視感透過率の大きいＡ１からＡ５までの透過率曲線を有するレンズを選択する。 Next, a method of selecting a lens suitable for the user of the color vision correction glasses will be described. If a person with color vision deficiency who wants to purchase a lens determines that the color vision correction glasses of class A are optimal by inspection, the lens of class A is also used as the brightness improving lens. For example, if the inspection result shows that the lens having the A6 transmittance curve shown in Table 1 (hereinafter referred to as "A6 lens") is the most suitable as the color vision correction lens, the A6 lens is used as the color vision correction lens. Select and select a lens having a transmittance curve from A1 to A5, which has a larger visible transmittance than the A6 lens, as the brightness improving lens.
また、使用者にＢ類の色覚補正レンズが最適であると診断された場合、明度向上レンズとしてＢ類のレンズの中で色覚補正レンズよりも視感透過率の大きいレンズを選択することもできるが、Ｂ類のレンズは各等級の視感透過率がほとんど変わらないため、Ａ類のレンズを明度向上レンズに選択することができる。例えば、色覚補正レンズとして表２のＢ４レンズを選択した場合、Ｂ１からＢ３のレンズで充分に使用者が感じる明るさを確保できないときは、明度向上レンズとしてＡ１やＡ２のレンズを用いることができる。 Further, when the user diagnoses that the B-class color vision correction lens is optimal, it is possible to select a lens having a larger visual transmittance than the color vision correction lens among the B-class lenses as the brightness improving lens. However, since the visual transmittance of each grade of the B-class lens is almost the same, the A-class lens can be selected as the brightness-improving lens. For example, when the B4 lens in Table 2 is selected as the color vision correction lens, and the B1 to B3 lenses cannot sufficiently secure the brightness felt by the user, the A1 or A2 lens can be used as the brightness improving lens. ..
色覚補正レンズとしてＣ類又はＤ類のレンズを選択する場合は、明度向上レンズとして色覚補正レンズと同類のレンズの中で色覚補正レンズよりも視感透過率の大きいレンズの中から明度向上レンズを選択する。 When a C-class or D-class lens is selected as the color-vision correction lens, a brightness-improving lens is selected as a brightness-improving lens from among lenses similar to the color-vision correction lens and having a higher visual transmittance than the color-vision correction lens. select.
本発明の色覚補正レンズは、上記の実施形態に限らず、例えば、本発明の趣旨を逸脱しない範囲であれば、透過率曲線が表１乃至表４に示した透過率分布と異なる透過率分布や、図１乃至図４に示した透過率曲線と異なる形状の透過率曲線を有していてもよい。 The color vision correction lens of the present invention is not limited to the above-described embodiment, and the transmittance distribution is different from the transmittance distribution shown in Tables 1 to 4 as long as the transmittance curve does not deviate from the gist of the present invention. Alternatively, it may have a transmittance curve having a shape different from the transmittance curve shown in FIGS. 1 to 4.
本発明の色覚補正メガネは、薄暗い場所で視力が落ちることを抑制でき、かつ意匠性に優れるため、色覚補正メガネに好適に採用することができる。 The color vision correction glasses of the present invention can be suitably used for color vision correction glasses because they can suppress the deterioration of visual acuity in a dim place and are excellent in design.
Claims (2)
前記色覚補正レンズと同類のレンズ郡から選択された明度向上レンズと、
を備え、
前記明度向上レンズは、前記色覚補正レンズより視感透過率が大きい色覚補正メガネ。 AB lenses including multi-grade lenses with a transmittance curve in which the transmittance decreases as the light wavelength increases from 440 nm to reach the minimum value and then increases as the light wavelength increases to 600 nm. As the wavelength of light increases from 440 nm, the transmittance decreases and reaches the minimum value, and then as the wavelength of light increases to 600 nm, the transmittance increases and the minimum value of the transmittance is 50% or more. Class C lens group including a multi-grade lens having a rate curve, and a class D lens group including a multi-grade lens group having a transmittance curve having a substantially upward-sloping shape in a light wavelength range of 440 nm to 600 nm. A color vision correction lens selected from three types of lens groups consisting of
A brightness-enhancing lens selected from a lens group similar to the color vision correction lens, and
With
The brightness improving lens is a color vision correction eyeglass having a higher visual transmittance than the color vision correction lens.
前記Ａ類のレンズは、波長４４０ｎｍの光の透過率が４０％以上となるよう形成され、
前記Ｂ類のレンズは、波長４４０ｎｍの光の透過率が４０％未満であるとともに、Ｂ類に含まれる異なる等級のレンズは、波長４４０ｎｍの光の透過率と波長６００ｎｍの光の透過率の大小関係が逆に成るよう形成されており、
前記色覚補正レンズがＢ類のレンズ郡より選択され、前記明度向上レンズがＡ類のレンズ郡より選択された請求項１に記載の色覚補正メガネ。 The AB lens group consists of an A lens group and a B lens group.
The Class A lens is formed so that the transmittance of light having a wavelength of 440 nm is 40% or more.
The class B lens has a light transmittance of less than 40% at a wavelength of 440 nm, and the lenses of different grades included in the class B have a large or small transmittance of light having a wavelength of 440 nm and a light transmittance of 600 nm. The relationships are formed in reverse,
The color vision correction glasses according to claim 1, wherein the color vision correction lens is selected from the lens group of class B, and the brightness improving lens is selected from the lens group of class A.
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