JP6646031B2 - Color vision correction filter and color vision correction glasses - Google Patents

Color vision correction filter and color vision correction glasses Download PDF

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JP6646031B2
JP6646031B2 JP2017234986A JP2017234986A JP6646031B2 JP 6646031 B2 JP6646031 B2 JP 6646031B2 JP 2017234986 A JP2017234986 A JP 2017234986A JP 2017234986 A JP2017234986 A JP 2017234986A JP 6646031 B2 JP6646031 B2 JP 6646031B2
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公 足立
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Description

この発明は、色覚異常者の色の判別を補助する色覚補正フィルタ、及び該色覚補正フィルタを左右一対に備えた色覚補正メガネに関する。   The present invention relates to a color vision correction filter that assists a person with color vision deficiency in determining a color, and to color vision correction glasses including a pair of left and right color vision correction filters.

従来、色覚異常者の色覚を補正すべく、光の波長ごとに透過率の変化する色覚透過率曲線を備えた色覚補正メガネが知られている(例えば、特許文献1)。   Conventionally, in order to correct the color vision of a person with color vision deficiency, color vision correction glasses provided with a color vision transmittance curve whose transmittance varies for each wavelength of light are known (for example, Patent Document 1).

特許文献1の色覚補正フィルタは、色覚異常者が色覚正常者に比べて特定の波長の光に対する感度が他の波長の光に対する感度より強すぎるために色覚に異常をきたしており、その波長の光の透過率を抑えた色覚補正フィルタを使用すれば色覚を補正できるという理論に基づいている。
例えば、緑色に対する感度の強い色覚特性を有する色覚異常者には、緑色光の透過率を抑えるような透過率曲線を設けた色覚補正フィルタを使用させることにより、その色覚を補正するものである。この理論によると、いわゆる赤緑色覚異常者には、他の色に比べて緑色に対する感度の強いAタイプと、他の色に比べ緑と青の感度の強いBタイプが存在し、Aタイプの色覚異常者には、従来、図3に示したような、緑色光の透過率を抑えた色覚補正フィルタを用い、Bタイプの色覚異常者には、図4に示したような、緑と青の光の透過率を抑えた色覚補正フィルタを用いるようにしている。
The color vision correction filter of Patent Literature 1 has a color vision abnormality because a person with abnormal color vision has too high sensitivity to light of a specific wavelength as compared to a person with normal color vision than the sensitivity to light of another wavelength. It is based on the theory that color vision can be corrected by using a color vision correction filter that suppresses light transmittance.
For example, a color vision deficient person having a strong color vision characteristic with high sensitivity to green is used to correct the color vision by using a color vision correction filter provided with a transmittance curve that suppresses the transmittance of green light. According to this theory, so-called red-green color blinders have A type, which is more sensitive to green than other colors, and B type, which is more sensitive to green and blue than other colors. Conventionally, a color-vision-impaired person uses a color-vision correction filter that suppresses the transmittance of green light as shown in FIG. 3, and a B-type color-impaired person sees green and blue as shown in FIG. 4. A color vision correction filter that suppresses the transmittance of the light is used.

ところが、特許文献1に係る色覚補正フィルタは、このように色覚異常者が強く感じる光を押さえることで、色の判別能は向上するものの、全体として目に入る光の量が少なくなるため、夜間の自動車の運転等、暗い場所では使いづらいという課題や、フィルタの裏面に当たる光の多くがフィルタを抜けずに反射するため、フィルタの裏面に景色が映って目障りであるという課題があった。   However, the color vision correction filter according to Patent Literature 1 improves color discrimination ability by suppressing light strongly felt by a color vision impaired person, but reduces the amount of light that enters the eyes as a whole. There is a problem that it is difficult to use in a dark place, such as driving a car, and that much of the light that strikes the back surface of the filter is reflected without passing through the filter.

そこで、本発明者は、透過率曲線における緑色光領域の透過率を抑える際に、これにつられて透過率が下がっている緑色光領域の両側の領域の透過率を大きくすることで、全体としてフィルタを通る光の量を多くすることに想到する。   Therefore, the present inventor, when suppressing the transmittance of the green light region in the transmittance curve, by increasing the transmittance of the region on both sides of the green light region has been reduced transmittance accordingly, as a whole Consider increasing the amount of light passing through the filter.

特開平6−18819号公報JP-A-6-18819

しかし、この緑色光領域の両側の領域の透過率を上げると、色覚異常者の中には、眩しすぎて、逆に、色覚補正フィルタを明るい所で使えないという問題が判明した。
本発明は、上記課題に鑑みてなされたものであり、明るい所でも暗い所でも使用可能な色覚補正フィルタ、及び色覚補正メガネの提供を目的とする。
However, when the transmittance in the region on both sides of the green light region is increased, it has been found that some of the color vision impaired persons are too dazzling, and conversely, the color vision correction filter cannot be used in a bright place.
The present invention has been made in view of the above problems, and has as its object to provide a color vision correction filter that can be used in a bright place and a dark place, and color vision correction glasses.

上記課題を解決するためになされた第1の発明は、色覚異常者の色覚を補正する色覚補
正フィルタであって、波長が470nmである青色光の透過率が30%以上80%以下で
あり、波長が500nm以上550nm以下からなる緑色光領域の透過率が30%以上6
0%以下に設けられるとともに、波長が450nm以上600nm以下の領域における最
小透過率が前記緑色光領域に設けられ、波長が560nmである黄色光の透過率が80%
以上であり、波長が600nmである赤色光の透過率が90%以上である。
A first invention made to solve the above-mentioned problem is a color vision correction filter for correcting color vision of a color vision impaired person, wherein the transmittance of blue light having a wavelength of 470 nm is 30% or more and 80% or less, The transmittance in the green light region having a wavelength of 500 nm or more and 550 nm or less is 30% or more and 6% or more.
0% or less, and the minimum transmittance in a region having a wavelength of 450 nm or more and 600 nm or less is provided in the green light region, and the transmittance of yellow light having a wavelength of 560 nm is 80%.
As described above, the transmittance of red light having a wavelength of 600 nm is 90% or more.

本発明者が鋭意検討したところによると、色覚補正フィルタの赤色側の透過率を大きくしても色覚異常者はあまり眩しく感じないのに対し、青色側の透過率を一定以上大きくすると、非常に眩しく感じることが判明した。即ち、本発明に係る色覚補正フィルタでは、波長が470nmである青色光の透過率を80%以下に抑えたことで、使用者が眩しく感じることを抑制することができる。また、波長が560nmである黄色光の透過率を80%以上とし、波長が600nmである赤色光の透過率を90%以上としたことで、フィルタ全体を通る光の量を増加するため、使用者は、暗い所でも、色覚補正が十分に行うことができる。
さらに、本発明の色覚補正フィルタは、赤色光の透過率を高くしたことで、緑色光の透過率を高くしても、緑色光と赤色光の透過率の差を十分に確保できるため、緑色光の透過率を従来品より高い30%から60%以上にした。これにより緑色光の範囲においても、従来品に比べフィルタを通過する光量が増加し、より暗い所での使用が可能となり、また、本発明の色覚補正フィルタを通して見た緑色が、裸眼で見た色と異なる色に見えることを抑制できる。
According to the inventor's intense study, even if the color-vision correction filter increases the transmittance on the red side, a person with abnormal color vision does not feel so dazzling. It turned out to be dazzling. That is, in the color vision correction filter according to the present invention, the transmittance of blue light having a wavelength of 470 nm is suppressed to 80% or less, so that the user can be prevented from feeling dazzling. Further, since the transmittance of yellow light having a wavelength of 560 nm is set to 80% or more and the transmittance of red light having a wavelength of 600 nm is set to 90% or more, the amount of light passing through the entire filter is increased. The person can sufficiently perform color vision correction even in a dark place.
Furthermore, the color vision correction filter of the present invention, by increasing the transmittance of red light, even if the transmittance of green light is increased, the difference between the transmittance of green light and red light can be sufficiently ensured, The light transmittance is increased from 30%, which is higher than that of the conventional product, to 60% or more. As a result, even in the range of green light, the amount of light passing through the filter is increased as compared with the conventional product, enabling use in a darker place.Also, the green color seen through the color vision correction filter of the present invention is seen with the naked eye. The appearance of a color different from the color can be suppressed.

上記第1の発明に係る色覚補正フィルタ(以下「Aタイプ」の色覚補正フィルタという)は、500nm以上550nm以下からなる緑色光領域における最大透過率と最小透過率の差が10%以内であることを特徴とする。
Aタイプの色覚異常者は、500nm〜550nmの波長領域に含まれる緑色については、微妙な色の違いであっても判別することができる。しかし、この波長領域の透過率曲線に大きな傾斜を付けると、隣接する緑色間の透過率の比が裸眼の場合の比と異なってしまうため、裸眼では判別できる微妙な緑色の違いが、フィルタを使用するとできなくなる虞がある。500nm〜550nmの光の透過率の最大値と最小値の差を10%以内に収めることで、当該波長領域における透過率曲線が略水平になり、Bタイプの色覚異常者が使用した場合に、この波長領域に含まれる微妙な緑色の区別ができなくなることを抑制できる。
In the color vision correction filter according to the first aspect of the invention (hereinafter referred to as "A type" color vision correction filter), a difference between a maximum transmittance and a minimum transmittance in a green light region of 500 nm or more and 550 nm or less is within 10%. It is characterized by.
The A-type color-blind person can discriminate a green color included in a wavelength region of 500 nm to 550 nm even if the color is slightly different. However, if the transmittance curve in this wavelength region is greatly inclined, the ratio of the transmittance between adjacent green colors will be different from that for the naked eye, and the subtle green difference that can be discerned by the naked eye will cause the filter There is a possibility that it will not be possible to use it. By keeping the difference between the maximum value and the minimum value of the transmittance of light of 500 nm to 550 nm within 10%, the transmittance curve in the wavelength region becomes substantially horizontal, and when a B-type color vision impaired person uses, It is possible to prevent the subtle green color included in this wavelength region from being indistinguishable.

本願の第2発明に係る色覚補正フィルタ(以下「Bタイプ」の色覚補正フィルタという)は、色覚異常者の色覚を補正する色覚補正フィルタであって、波長が470nmである青色光の透過率が30%以上80%以下であり、波長が520nm以上550nm以下からなる緑色光領域の透過率が30%以上60%以下に設けられ、波長が560nmである黄色光の透過率が80%以上であり、波長が600nmである赤色光の透過率が90%以上であり、Bタイプの色覚補正フィルタでは、波長が520nm以上550nm以下の領域における最大透過率と最小透過率の差が10%以内であることを特徴とする。
Bタイプの色覚異常者は、520nm〜550nmの波長領域に含まれる緑色については、微妙な色の違いであっても判別することができる。しかし、この波長領域の透過率曲線に、大きな傾斜を付けると、隣接する緑色間の透過率の比が裸眼の場合の比と異なってしまうため、裸眼では判別できる微妙に異なる緑色の区別がフィルタを使用するとできなくなる虞がある。520nm〜550nmの光の透過率の最大値と最小値の差を10%以内に収めることで、当該波長領域における透過率曲線が略水平になり、Bタイプの色覚異常者が使用した場合に、この波長領域に含まれる微妙な緑色の区別ができなくなることを抑制できる。本発明は、上記第1の発明に係る色覚補正フィルタ、及び上記第2の色覚補正フィルタを左右一対に備えた色覚補正メガネを含む。
The color vision correction filter according to the second invention of the present application (hereinafter referred to as a “B type” color vision correction filter) is a color vision correction filter that corrects the color vision of a person with color vision deficiency and has a transmittance of blue light having a wavelength of 470 nm. 30% or more and 80% or less, the transmittance in the green light region having a wavelength of 520 nm or more and 550 nm or less is provided in a range of 30% or more and 60% or less, and the transmittance of yellow light having a wavelength of 560 nm is 80% or more. The transmittance of red light having a wavelength of 600 nm is 90% or more, and in the type B color vision correction filter, the difference between the maximum transmittance and the minimum transmittance in a region having a wavelength of 520 nm to 550 nm is within 10%. It is characterized by the following.
The B-type color-blind person can discriminate a green color included in the wavelength range of 520 nm to 550 nm even if the color is slightly different. However, if the transmittance curve in this wavelength region has a large slope, the transmittance ratio between adjacent green colors will be different from that for the naked eye, so that the subtle distinction of green that can be distinguished by the naked eye will be filtered. There is a possibility that the use of the refrigeration system becomes impossible. By keeping the difference between the maximum value and the minimum value of the transmittance of light of 520 nm to 550 nm within 10%, the transmittance curve in the wavelength region becomes substantially horizontal, and when a B-type color-blind person uses the color-blind person, It is possible to prevent the subtle green color included in this wavelength region from being indistinguishable. The present invention includes color vision correction glasses including the color vision correction filter according to the first invention and a pair of left and right color vision correction filters.

本発明の色覚補正フィルタセット、及び色覚補正メガネによれば、赤緑色覚異常者が、明るい所でも暗い所でも、十分に色覚補正を行うことができる。   ADVANTAGE OF THE INVENTION According to the color vision correction filter set and the color vision correction glasses of the present invention, a person with red-green color deficiency can sufficiently perform color vision correction in a bright place or a dark place.

本発明の第1実施形態に係るAタイプの色覚補正フィルタの模式的透過率曲線である。3 is a schematic transmittance curve of an A-type color vision correction filter according to the first embodiment of the present invention. 本発明の第2実施形態に係るBタイプの色覚補正フィルタの模式的透過率曲線である。9 is a schematic transmittance curve of a B-type color vision correction filter according to a second embodiment of the present invention. 従来のAタイプの模式的透過率曲線である。It is a typical transmittance curve of the conventional A type. 従来のBタイプの模式的透過率曲線である。It is a typical transmittance | permeability curve of the conventional B type.

以下、適宜図面を用いながら本発明の実施形態について詳述する。
本発明の色覚補正フィルタについては、いずれの実施形態においても、ガラスや樹脂の基材表面に真空蒸着法により多層膜を形成する方法や、基材に多層フィルムを貼着する方法、基材に顔料等を混合する方法等、公知の製造方法を適宜に選択できるが、基材に多層フィルムを貼着する方法が、フィルタに目標とする透過率曲線を正確に設ける上で好ましい。
尚、本発明は以下の実施形態に限られるものではない。
(第1実施形態)
図1は、本発明の第1実施形態に係るAタイプの色覚補正フィルタ100(不図示)を通過する光の波長ごとの透過率を模式的に示した透過率曲線である。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
Regarding the color vision correction filter of the present invention, in any embodiment, a method of forming a multilayer film on a substrate surface of glass or resin by a vacuum deposition method, a method of attaching a multilayer film to the substrate, Although a known production method such as a method of mixing a pigment or the like can be appropriately selected, a method of attaching a multilayer film to a base material is preferable for accurately setting a target transmittance curve on a filter.
The present invention is not limited to the following embodiments.
(1st Embodiment)
FIG. 1 is a transmittance curve schematically showing the transmittance of light passing through an A-type color vision correction filter 100 (not shown) for each wavelength according to the first embodiment of the present invention.

Aタイプの色覚補正フィルタ100は、赤緑色覚異常者のうち、緑色に対する感度が他の色に対する感度よりも相対的に強いAタイプの色覚異常者を対象としたもので、可視光の波長領域のうち概ね中央に位置する緑色領域の光の透過率を抑えた透過率曲線が付与されている。図1では、Aタイプの色覚異常者のうち、異常の程度の軽重に合わせて使い分けられる8種類の色覚補正フィルタ100(101〜108)の透過率曲線を示している。色覚補正フィルタ101が最も異常の程度の軽い色覚異常者に用いられ、色覚補正フィルタ108が最も異常の程度の重い色覚異常者に用いられる。   The A-type color vision correction filter 100 is intended for A-type color vision impaired persons, whose sensitivity to green is relatively stronger than sensitivity to other colors, among red-green color impaired persons, and in the visible light wavelength region. Among them, a transmittance curve in which the transmittance of light in a green region located substantially in the center is suppressed is given. FIG. 1 shows the transmittance curves of eight types of color vision correction filters 100 (101 to 108) that are selectively used depending on the degree of abnormality among the type A color vision abnormalities. The color vision correction filter 101 is used for a person with the least abnormal color vision, and the color vision correction filter 108 is used for a person with the most abnormal color vision.

色覚補正フィルタ100の透過率曲線は、図1に示すように、いずれも、波長が500nm以上550nm以下の緑色光領域において、波長が450nmから600nmにおける最小透過率を有している。これにより、緑色の感度が強いAタイプの色覚を補正するようにしている。   As shown in FIG. 1, each of the transmittance curves of the color vision correction filter 100 has a minimum transmittance at a wavelength of 450 nm to 600 nm in a green light region having a wavelength of 500 nm or more and 550 nm or less. This corrects the A-type color vision with strong green sensitivity.

色覚補正フィルタ100の透過率曲線は、波長が470nmである青色光の透過率が30%以上80%以下に設けられている。波長が470nmである青色光の透過率を80%以下とすることで、当該フィルタ100を使用する色覚異常者が眩しく感じることを抑制できる。波長が450nm以上490nm以下の全域にわたり透過率が80%以下とすることで、さらに効果的に眩しさを抑制できる。   The transmittance curve of the color vision correction filter 100 is provided such that the transmittance of blue light having a wavelength of 470 nm is 30% or more and 80% or less. By setting the transmittance of blue light having a wavelength of 470 nm to be equal to or less than 80%, it is possible to prevent a person with abnormal color vision using the filter 100 from feeling dazzling. By setting the transmittance to 80% or less over the entire wavelength range of 450 nm to 490 nm, glare can be more effectively suppressed.

(下線部、ご確認ください。)
また、色覚補正フィルタ100の透過率曲線は、波長が470nmの青色光の透過率が30%以上に設けられている。こうすることで、裸眼の場合と比べて、青色の色合いが損なわれることを抑制できる。尚、実際には、色覚補正フィルタ100の透過率曲線は、緑色に対する感度の強い色覚異常者を対象としているため、青色光を大きく抑える必要が無いため、波長が470nmの青色光の透過率が45%以上に設けられている。
また、Aタイプの色覚補正フィルタ100は、450nm以上490nm以下の青色領域における透過率の最大値と最小値の差が10%以内であることが好ましい。即ち、緑色領域との境界付近まで青色領域における透過率が下がらないように維持することで、青色領域においても、フィルタを透過する光量を稼ぐことができる。
(Please check the underlined part.)
The transmittance curve of the color vision correction filter 100 is set so that the transmittance of blue light having a wavelength of 470 nm is 30% or more. By doing so, the hue of blue can be suppressed from being impaired as compared with the case of the naked eye. Actually, since the transmittance curve of the color vision correction filter 100 is intended for a color-blind person having a strong sensitivity to green, it is not necessary to greatly suppress blue light. It is provided at 45% or more.
In the A-type color vision correction filter 100, it is preferable that the difference between the maximum value and the minimum value of the transmittance in a blue region of 450 nm or more and 490 nm or less be within 10%. That is, by maintaining the transmittance in the blue region so as not to decrease to near the boundary with the green region, it is possible to increase the amount of light transmitted through the filter even in the blue region.

また、Aタイプの色覚補正フィルタ100は、波長が500nm以上550nm以下の緑色光の透過率が30%以上に設けられている。色覚補正フィルタ100は、後述するように、黄色から赤色光領域の透過率を高くしたことにより、緑色光の透過率を30%未満としなくとも、黄色光、及び赤色光との透過率の差を十分に設けることが可能なことによる。また、Aタイプの色覚補正フィルタ100は、波長が500nm以上550nm以下の緑色光の透過率が60%以下に設けられており、これは、この透過率が60%を超えると、Aタイプの色覚異常者が十分に緑色と赤色を区別できない虞があることによる。
さらに、色覚補正フィルタ100は、波長が500nm以上550nm以下の緑色光領域における最大透過率と最小透過率の差が10%以下(図1では、0%)に設けられている。こうすることで、Aタイプの色覚異常者が本来有する、この領域における緑色の微妙な色の違いを判別する能力が損なわれることを抑制できる。
The type A color vision correction filter 100 has a transmittance of 30% or more for green light having a wavelength of 500 nm or more and 550 nm or less. As will be described later, the color vision correction filter 100 increases the transmittance in the yellow to red light region, so that the difference between the transmittance of yellow light and the transmittance of red light can be reduced even if the transmittance of green light is not less than 30%. Can be provided sufficiently. The A type color vision correction filter 100 is provided with a transmittance of 60% or less for green light having a wavelength of 500 nm or more and 550 nm or less. This is because an abnormal person may not be able to sufficiently distinguish between green and red.
Further, the difference between the maximum transmittance and the minimum transmittance in the green light region having a wavelength of 500 nm or more and 550 nm or less is set to 10% or less (0% in FIG. 1). In this way, it is possible to prevent the ability of the A-type color-blind person to originally discriminate the subtle difference in green color in this region from being impaired.

また、色覚補正フィルタ100は、波長が560nmである黄色光の透過率が80%以上に、波長が600nmである赤色光の透過率が90%以上に設けられている。こうすることで、色覚異常者の目に入る光量を確保して、視界が暗くなることを抑制できる。   In addition, the color vision correction filter 100 has a transmittance of yellow light having a wavelength of 560 nm of 80% or more and a transmittance of red light having a wavelength of 600 nm of 90% or more. By doing so, it is possible to secure the amount of light that enters the eyes of the color-blind person and prevent the visibility from becoming dark.

(第2実施形態)
図2は、本発明の第2実施形態に係るBタイプの色覚補正フィルタ200(不図示)を通過する光の波長ごとの透過率を模式的に示した透過率曲線である。
(2nd Embodiment)
FIG. 2 is a transmittance curve schematically showing the transmittance of light passing through a B-type color vision correction filter 200 (not shown) for each wavelength according to the second embodiment of the present invention.

Bタイプの色覚補正フィルタ200は、赤緑色覚異常者のうち、緑色に加え、青色に対する感度が他の色に対する感度よりも相対的に強いBタイプの色覚異常者を対象としたもので、可視光の波長領域のうち、青色領域、及び緑色領域の光の透過率を抑えた透過率曲線が付与されている。図2では、Bタイプの色覚異常者のうち、異常の程度の軽重に合わせて使い分けられる8種類の色覚補正フィルタ200(201〜208)の透過率曲線を示している。色覚補正フィルタ201が最も異常の程度の軽い色覚異常者に用いられ、色覚補正フィルタ208が最も異常の程度の重い色覚異常者に用いられる。
尚、Aタイプの色覚補正フィルタ100と、Bタイプの色覚補正フィルタ200の透過率曲線において、同様の特性を有する部分においては、一部説明を省略する。
The B-type color vision correction filter 200 is intended for a B-type color vision impaired person whose sensitivity to blue is relatively stronger than the sensitivity to other colors among red-green color vision impaired persons. In the wavelength region of light, a transmittance curve in which the transmittance of light in the blue region and the green region is suppressed is given. FIG. 2 shows transmittance curves of eight types of color vision correction filters 200 (201 to 208) that can be selectively used depending on the degree of abnormality among the B type color vision impaired persons. The color vision correction filter 201 is used for a person with the least abnormal color vision, and the color vision correction filter 208 is used for a person with the most abnormal color vision.
In the transmittance curves of the A-type color vision correction filter 100 and the B-type color vision correction filter 200, portions having similar characteristics are partially omitted.

色覚補正フィルタ200の透過率曲線は、図2に示すように、波長が450nm以上520nm未満の青色領域、及び波長が520nm以上550nm未満の青色領域緑色光領域において、透過率を抑えた透過率曲線を有している。Bタイプの色覚補正フィルタ200のうち、異常の度合いの軽い色覚異常者用のフィルタ201〜206は、青色領域の透過率が緑色光領域の透過率より高く設けられ、異常の度合いの重い色覚異常者用のフィルタ207、208は、青色領域の透過率が緑色光領域の透過率以下に設けられている。   As shown in FIG. 2, the transmittance curve of the color vision correction filter 200 is a transmittance curve in which transmittance is suppressed in a blue region having a wavelength of 450 nm or more and less than 520 nm, and a blue region and a green light region having a wavelength of 520 nm or more and less than 550 nm. have. Among the B-type color vision correction filters 200, the filters 201 to 206 for color vision impaired persons with a light abnormality are provided so that the transmittance in the blue region is higher than the transmittance in the green light region, and the color vision abnormality with a high degree of abnormality is provided. The filters 207 and 208 for the users are provided such that the transmittance in the blue region is lower than the transmittance in the green light region.

色覚補正フィルタ200の透過率曲線は、波長が450nm以上490nmの青色領域における透過率が60%以下に設けられている。色覚補正フィルタ200においても、波長が470nmである青色光の透過率を80%以下としたので、色覚異常者が眩しく感じることを抑制できる。   The transmittance curve of the color vision correction filter 200 is provided such that the transmittance in a blue region having a wavelength of 450 nm or more and 490 nm is 60% or less. Also in the color vision correction filter 200, since the transmittance of blue light having a wavelength of 470 nm is set to 80% or less, it is possible to suppress a person with abnormal color vision from feeling dazzling.

また、色覚補正フィルタ200の透過率曲線は、色覚補正フィルタ100と同様に、波長が470nmの青色光の透過率を30%以上に設け、青色の色合いが損なわれることを抑制している。
色覚補正フィルタ200は、実際には、色覚補正フィルタ200の透過率曲線は、青色に対する感度の強い色覚異常者を対象とし、青色光を抑える必要が有るため、波長が470nmの青色光の透過率が60%以下に設けられている。
また、Bタイプの色覚補正フィルタ200においても、Aタイプの色覚補正フィルタ100と同様に、青色領域において透過する光量を確保するため、450nm以上490nm以下の青色領域における透過率の最大値と最小値の差を10%以内に設けている。
In addition, the transmittance curve of the color vision correction filter 200, similarly to the color vision correction filter 100, sets the transmittance of blue light having a wavelength of 470 nm to 30% or more, and suppresses the loss of blue tint.
Actually, the transmittance curve of the color vision correction filter 200 is designed for a color vision impaired person who has strong sensitivity to blue, and it is necessary to suppress blue light. Is provided at 60% or less.
In addition, in the B-type color vision correction filter 200, similarly to the A type color vision correction filter 100, in order to secure the amount of light transmitted in the blue region, the maximum value and the minimum value of the transmittance in the blue region of 450 nm or more and 490 nm or less. Is provided within 10%.

また、Bタイプの色覚補正フィルタ200では、波長が520nm以上550nm以下の緑色光の透過率を30%以上としている。これは、Aタイプの色覚補正フィルタ100と同様に、黄色から赤色光領域の透過率を高くしたことにより、緑色光の透過率を30%未満としなくとも、黄色光、及び赤色光との透過率の差を十分に設けることが可能なことによる。   In the B-type color vision correction filter 200, the transmittance of green light having a wavelength of 520 nm to 550 nm is set to 30% or more. This is because, similarly to the A-type color vision correction filter 100, by increasing the transmittance in the yellow to red light region, the transmittance of yellow light and red light can be reduced even if the transmittance of green light is not less than 30%. This is because it is possible to provide a sufficient difference in the rates.

また、図2の例では、波長が520nm以上550nm以下の緑色光の透過率が34%に設けられているが、これを、30%以上60%以下の範囲で適宜変更すことが可能である。
ここで、この範囲の透過率が60%を超えると、Bタイプの色覚異常者が十分に緑色と赤色を区別できない虞がある。
また、色覚補正フィルタ200は、波長が520nm以上550nm以下の緑色光領域における最大透過率と最小透過率の差が10%以下(図2では、0%)に設けられている。こうすることで、Bタイプの色覚異常者が本来有する、この領域における緑色の微妙な色の違いを判別する能力を損なうことを抑制できる。
Further, in the example of FIG. 2, the transmittance of green light having a wavelength of 520 nm to 550 nm is provided at 34%, but this can be changed as appropriate within the range of 30% to 60%. .
Here, if the transmittance in this range exceeds 60%, there is a possibility that a B-type color-impaired person cannot sufficiently distinguish between green and red.
Further, the color vision correction filter 200 is provided such that the difference between the maximum transmittance and the minimum transmittance in a green light region having a wavelength of 520 nm or more and 550 nm or less is 10% or less (0% in FIG. 2). By doing so, it is possible to suppress the impairment of the ability of the B-type color vision impaired person to originally determine the subtle difference in green color in this region.

Aタイプの色覚補正フィルタ100においては、青色領域から緑色光領域にかけて波長が500nmの位置で透過率が変化するのに対し、Bタイプの色覚補正フィルタ200では、青色領域から緑色光領域にかけて透過率が変化する場合には、520nmの位置で透過率が変化するように設けられている。即ち、本発明者が鋭意検討した結果、500nm以上520nm未満の領域と520nm以上550nm以下の領域との透過率の差を加減することにより、Bタイプの色覚異常者に対し、より効果的に色覚補正が行える。   In the type A color vision correction filter 100, the transmittance changes at a position where the wavelength is 500 nm from the blue region to the green light region, whereas in the type B color vision correction filter 200, the transmittance varies from the blue region to the green light region. Is changed so that the transmittance changes at a position of 520 nm. That is, as a result of the inventor's intensive study, by adjusting the difference in transmittance between the region of 500 nm or more and less than 520 nm and the region of 520 nm or more and 550 nm or less, color vision deficiency of the B type is more effectively achieved. Correction can be made.

また、色覚補正フィルタ200においても、波長が560nmである黄色光の透過率が80%以上に、波長が600nmである赤色光の透過率が90%以上に設けられ、色覚異常者の目に入る光量を確保して、視界が暗くなることを抑制している。   In the color vision correction filter 200 as well, the transmittance of yellow light having a wavelength of 560 nm is set to 80% or more, and the transmittance of red light having a wavelength of 600 nm is set to 90% or more, so that the color vision deficient eyes can be seen. The amount of light is secured to prevent the visibility from becoming dark.

また、図示は省略したが、本発明は、色覚補正フィルタ100、又は色覚補正フィルタ200を左右一対に備えた色覚補正メガネを含む。   Although not shown, the present invention includes color vision correction glasses provided with a pair of left and right color vision correction filters 100 or 200.

以上、本発明の色覚補正フィルタは、上述した実施形態に限られるものではなく、例えば、Aタイプ用の色覚補正フィルタにおいて、500nm以上550nm以下からなる緑色光領域における最大透過率と最小透過率の差が10%以内でなくともよいし、450nm以上490nm以下の青色領域における透過率の最大値と最小値の差が10%以内でなくともよい。
同様に、Bタイプの色覚補正フィルムにおいて、520nm以上550nm以下からなる緑色光領域における最大透過率と最小透過率の差が10%以内でなくともよいし、450nm以上490nm以下の青色領域における透過率の最大値と最小値の差が10%以内でなくともよい。
As described above, the color vision correction filter of the present invention is not limited to the above-described embodiment. For example, in the color vision correction filter for the A type, the maximum transmittance and the minimum transmittance in the green light region including 500 nm or more and 550 nm or less are used. The difference may not be within 10%, and the difference between the maximum value and the minimum value of the transmittance in the blue region of 450 nm to 490 nm may not be within 10%.
Similarly, in the B type color vision correction film, the difference between the maximum transmittance and the minimum transmittance in the green light region of 520 nm or more and 550 nm or less need not be within 10%, and the transmittance in the blue region of 450 nm or more and 490 nm or less. The difference between the maximum value and the minimum value of may not be within 10%.

色覚補正フィルタ100(101〜108),200(201〜208)(不図示) Color vision correction filters 100 (101 to 108), 200 (201 to 208) (not shown)

Claims (3)

色覚異常者の色覚を補正する色覚補正フィルタであって、
波長が470nmである青色光の透過率が30%以上80%以下であり、
波長が500nm以上550nm以下からなる緑色光領域の透過率が30%以上60%以下に設けられるとともに、波長が450nm以上600nm以下の領域における最小透過率が前記緑色光領域に設けられ、
波長が560nmである黄色光の透過率が80%以上であり、波長が600nmである赤色光の透過率が90%以上であり、
500nm以上550nm以下からなる緑色光領域における最大透過率と最小透過率の差が10%以内であることを特徴とする色覚補正フィルタ。
A color vision correction filter that corrects the color vision of a color blind person,
The transmittance of blue light having a wavelength of 470 nm is 30% or more and 80% or less;
A green light region having a wavelength of 500 nm or more and 550 nm or less is provided with a transmittance of 30% or more and 60% or less, and a minimum transmittance of a wavelength region of 450 nm or more and 600 nm or less is provided in the green light region,
Wavelength is the transmittance of yellow light is 80% or more is 560 nm, Ri der red light transmittance wavelength is 600nm is 90% or more,
A color vision correction filter, wherein a difference between a maximum transmittance and a minimum transmittance in a green light region of 500 nm or more and 550 nm or less is within 10%.
色覚異常者の色覚を補正する色覚補正フィルタであって、  A color vision correction filter for correcting the color vision of a color blind person,
波長が470nmである青色光の透過率が30%以上80%以下であり、  The transmittance of blue light having a wavelength of 470 nm is 30% or more and 80% or less;
波長が520nm以上550nm以下からなる緑色光領域の透過率が30%以上60%以下に設けられ、  A green light region having a wavelength of 520 nm or more and 550 nm or less is provided with a transmittance of 30% or more and 60% or less;
波長が560nmである黄色光の透過率が80%以上であり、  The transmittance of yellow light having a wavelength of 560 nm is 80% or more;
波長が600nmである赤色光の透過率が90%以上であり、520nm以上550nm以下からなる緑色光領域における最大透過率と最小透過率の差が10%以内であることを特徴とする色覚補正フィルタ。  A color vision correction filter, wherein the transmittance of red light having a wavelength of 600 nm is 90% or more, and the difference between the maximum transmittance and the minimum transmittance in a green light region of 520 nm to 550 nm is within 10%. .
請求項1、又は請求項2に記載の色覚補正フィルタを左右一対に備えた色覚補正メガネ。  Color vision correction glasses comprising a pair of left and right color vision correction filters according to claim 1 or 2.
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