JP2015118156A - Color vision correction lens and color vision correction spectacles - Google Patents

Color vision correction lens and color vision correction spectacles Download PDF

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JP2015118156A
JP2015118156A JP2013260115A JP2013260115A JP2015118156A JP 2015118156 A JP2015118156 A JP 2015118156A JP 2013260115 A JP2013260115 A JP 2013260115A JP 2013260115 A JP2013260115 A JP 2013260115A JP 2015118156 A JP2015118156 A JP 2015118156A
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color vision
lens
vision correction
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correction lens
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公 足立
Akira Adachi
公 足立
白井　利明
Toshiaki Shirai
利明 白井
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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/04—Contact lenses for the eyes
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/104—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having spectral characteristics for purposes other than sun-protection

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Abstract

PROBLEM TO BE SOLVED: To provide a color vision correction lens which has a function of correcting myopia, hyperopia, or astigmatism in addition to a color vision correction function and which can be made to order for a short period of time, and spectacles using the color vision correction lens.SOLUTION: A color vision correction lens includes: a lens base 1; a multilayer film 2 having a transmittance curve correcting color vision of a color-blind person; and a hard coat layer 3. Curved surface machining for correcting one or some of myopia, hyperopia, and astigmatism is performed on the lens base 1. The multilayer film 2 may be sandwiched by each of front and back faces of the two lens bodies 1.

Description

この発明は、色覚異常者の色覚を補正する色覚補正レンズ、及び当該色覚補正レンズを備えた色覚補正メガネに関する。   The present invention relates to a color vision correction lens that corrects color vision of a person with color blindness, and color vision correction glasses that include the color vision correction lens.

従来、色覚異常者の色覚を補正する色覚補正レンズが製造・販売されている。かかる色覚補正レンズは、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という理論に基づいており、色覚異常者が相対的に強く感じる波長の光の透過率を抑制するような透過率曲線を備えた被膜がレンズ上に形成されている。   2. Description of the Related Art Conventionally, color vision correction lenses that correct color vision of people with color blindness have been manufactured and sold. Such a color vision correction lens is based on the theory that a person with color blindness is more sensitive to light of a specific wavelength than a person with normal color blindness, and the person with color blindness feels relatively strong. A film having a transmittance curve that suppresses the transmittance of light having a wavelength is formed on the lens.

例えば、特許文献１に係る色覚補正レンズでは、色覚異常者の色覚特性を４つのタイプに分類し、さらに、各タイプを色覚異常の程度に合わせて８つの等級に分類し、計３２種類の透過率曲線を有する色覚補正レンズを用意することで、あらゆる色覚異常者をカバーするようにしている。   For example, in the color vision correcting lens according to Patent Document 1, the color vision characteristics of color blind people are classified into four types, and each type is further classified into 8 classes according to the degree of color vision abnormalities, for a total of 32 types of transmission. By preparing a color vision correction lens having a rate curve, all color vision abnormal persons are covered.

一方で、色覚異常者には、色覚正常者同様、近視や遠視、乱視等（以下「近視等」という。）の矯正を必要とする人も含まれるため、色覚補正レンズに近視等を矯正する機能を付加することが望まれている。   On the other hand, people with abnormal color vision include those who need to correct myopia, hyperopia, astigmatism, etc. (hereinafter referred to as “myopia”, etc.), as with normal color vision. It is desired to add functions.

ここで、色覚補正レンズに近視等の矯正機能を付加することを考えた場合、３２種類の透過率曲線を有するレンズを、さらに近視等の症状に合わせてレンズを細分化すると、レンズの種類が非常な数に増大するため実質的にすべてのレンズを在庫することは不可能である。従って、色覚異常者の色覚特性及び近視等の度合いを検査した後、オーダーメイド的にレンズを作成することが望まれる。   Here, when it is considered to add a correction function such as myopia to the color vision correction lens, if the lens having 32 types of transmittance curves is further subdivided according to the symptoms such as myopia, the type of lens is It is impossible to stock virtually all lenses due to the large number. Therefore, it is desirable to make a lens in a custom-made manner after inspecting the color vision characteristics and the degree of myopia of a person with color blindness.

特開平６−１８８１９号公報JP-A-6-18819

しかし、特許文献１等従来の色覚補正レンズでは、レンズ表面に真空蒸着等で被膜を形成することから、ワンロットで１種類の透過率曲線のレンズしか被膜形成できず、同じ透過率曲線を有するレンズがワンロット分集まるまでレンズに被膜形成できないため、注文を受けてからレンズが完成するまで非常に時間がかかるという問題が有る。
本発明は、上記課題に鑑みてなされたものであり、色覚補正レンズに近視等を矯正する機能を付加したレンズを、色覚異常者の色覚や視力を検査した後短期間でオーダーメイド可能な色覚補正レンズ、及び該レンズを用いたメガネの提供を目的とする。 However, in the conventional color vision correction lens such as Patent Document 1, since a film is formed on the lens surface by vacuum deposition or the like, only one type of transmittance curve lens can be formed in one lot, and a lens having the same transmittance curve. Since a film cannot be formed on the lens until one lot is collected, there is a problem that it takes a very long time to complete the lens after receiving an order.
The present invention has been made in view of the above-mentioned problems, and a color vision correction lens that has a function of correcting myopia and the like can be custom-made in a short period of time after examining the color vision and visual acuity of a color blind person. An object is to provide a correction lens and glasses using the lens.

上記課題を解決するためになされた発明は、レンズと、色覚異常者の色覚を補正する透過率曲線を有する多層フィルムと、を備えた色覚補正レンズである。ただし、ここで、「レンズ」とは、近視等を矯正する機能を備えないレンズを含むものとする。   The invention made in order to solve the above-mentioned problems is a color vision correction lens comprising a lens and a multilayer film having a transmittance curve for correcting the color vision of a person with color blindness. Here, the “lens” includes a lens that does not have a function of correcting myopia or the like.

本発明に係る色覚補正レンズでは、レンズ毎に個別に多層フィルムを設けることができることから短期で製造することができ、色覚異常者の色覚特性や近視の度数等を検査した後、オーダーメイドすることができる。   The color vision correction lens according to the present invention can be manufactured in a short time because a multilayer film can be individually provided for each lens, and can be made to order after inspecting the color vision characteristics, the degree of myopia, etc. Can do.

本発明は、前記レンズが近視、遠視、及び乱視からなる群より選ばれた一又は複数の症状を矯正する機能を有することが好ましい。こうすることで、色覚を補正すると同時に近視等を矯正することができる。   In the present invention, the lens preferably has a function of correcting one or more symptoms selected from the group consisting of myopia, hyperopia, and astigmatism. By doing this, it is possible to correct myopia and correct myopia at the same time.

本発明に係る色覚補正レンズは、前記レンズ基体をさらに１枚備え、前記多層フィルムが２枚のレンズ基体間にサンドイッチ状に挟まれるよう設けられていることが好ましい。
こうすることで、多層フィルムに傷がつくことを抑制できる。 It is preferable that the color vision correction lens according to the present invention further includes one lens base and the multilayer film is sandwiched between the two lens bases.
By carrying out like this, it can control that a multilayer film is damaged.

本発明は前記色覚補正レンズを用いた色覚補正メガネを含む。   The present invention includes color vision correction glasses using the color vision correction lens.

以上、説明したように本発明によれば、色覚補正レンズに容易に近視等の矯正機能を付与することができる。   As described above, according to the present invention, it is possible to easily give a correction function such as myopia to the color vision correction lens.

本発明の一の実施の形態に係る（ａ）色覚補正レンズの模式的断面図、（ｂ）多層フィルムの模式的断面拡大図、（ｃ）光学繰り返しユニットの模式的断面拡大図である。1A is a schematic sectional view of a color vision correction lens according to an embodiment of the present invention, FIG. 2B is a schematic sectional enlarged view of a multilayer film, and FIG. 3C is a schematic sectional enlarged view of an optical repeating unit. 本発明の色覚補正レンズに係る多層フィルムの緑色光の透過率を相対的に抑えた透過率曲線の例である。It is an example of the transmittance | permeability curve which suppressed the transmittance | permeability of the green light of the multilayer film which concerns on the color vision correction lens of this invention relatively. 本発明の色覚補正レンズに係る多層フィルムの緑色光、及び赤色光の透過率を相対的に抑えた透過率曲線の例である。It is an example of the transmittance | permeability curve which suppressed relatively the transmittance | permeability of the green light of the multilayer film which concerns on the color vision correction lens of this invention, and red light. 本発明のその他の実施の形態に係る色覚補正レンズの模式的断面図である。It is a typical sectional view of a color vision correction lens concerning other embodiments of the present invention.

以下、本発明の色覚補正レンズ、及び色覚補正メガネについて詳述する。図１（ａ）は、本発明の一の実施の形態に係る色覚補正レンズ１０の断面を模式的に示している。色覚補正レンズ１０は、レンズ基体１と多層フィルム２とを主に備える他、ハードコート層３を備えている。
尚、本発明は、以下の実施形態に限られるものではない。 Hereinafter, the color vision correction lens and the color vision correction glasses of the present invention will be described in detail. Fig.1 (a) has shown typically the cross section of the color vision correction lens 10 which concerns on one embodiment of this invention. The color vision correction lens 10 includes a lens base 1 and a multilayer film 2 as well as a hard coat layer 3.
The present invention is not limited to the following embodiment.

レンズ基体１は、プラスチックやガラス等の素材から研磨やプレス等により形成され、メガネとして着用する際に内側となる裏面側（図１（ａ）の下側）に、近視や遠視、乱視、又はこれらのうち複数の症状の矯正を行うための曲面加工が施されている。   The lens base 1 is formed from a material such as plastic or glass by polishing or pressing, and has a myopia, hyperopia, astigmatism, or astigmatism on the back side (lower side of FIG. Of these, curved surface processing is performed to correct a plurality of symptoms.

レンズ基体１は、ガラスレンズ、又はプラスチックレンズの何れであってもよく、プラスチックレンズの材料としては、例えば、ポリメチルメタクリレート等のメタクリル樹脂、ポリカーボネート、ポリジエチレングリコールビスアリルカーボネート等のポリジアリルグリコールカーボネート類、ポリスチレン等を用いることができる。   The lens substrate 1 may be either a glass lens or a plastic lens. Examples of the plastic lens material include methacrylic resins such as polymethyl methacrylate, polycarbonate, and polydiallyl glycol carbonates such as polydiethylene glycol bisallyl carbonate. Polystyrene or the like can be used.

ハードコート層３は、図１（ａ）に示すように、多層フィルム２が設けられないレンズ基体１の裏面側に設けられ、レンズ基体１の裏面側に傷がつくのを抑制する。ハードコート層３は、レンズ基体１が曲面加工まで終了した後コーティングされる。   As shown in FIG. 1A, the hard coat layer 3 is provided on the back side of the lens base 1 on which the multilayer film 2 is not provided, and suppresses damage to the back side of the lens base 1. The hard coat layer 3 is coated after the lens substrate 1 is finished up to the curved surface processing.

多層フィルム２は、図２及び図３に示したような理想の透過率曲線を具備するように設計され、実際には、理想の透過率曲線を近似した透過率曲線が付与さる。尚、図２は、赤色光や青色光より緑色光に対する感度が相対的に高い色覚異常者を対象としたＡグループのＡ１からＡ８までの８等級の色覚補正レンズの設計上の透過率曲線を示し、図３は、青色光に比べ、赤色光と緑色光に対する感度が相対的に高い色覚異常者を対象としたＢグループのＢ１からＢ８までの８等級の色覚補正レンズの設計上の透過率曲線を示している。
多層フィルム２は、特許文献１同様、Ａ及びＢグループに加えＣ、Ｄグループを併せて計４グループ、３２種の透過率曲線を付与したものが用意される。 The multilayer film 2 is designed to have an ideal transmittance curve as shown in FIG. 2 and FIG. 3, and actually a transmittance curve approximating the ideal transmittance curve is given. FIG. 2 shows a design transmittance curve of eight-grade color vision correction lenses from A1 to A8 of A group intended for color blind persons who are relatively more sensitive to green light than red light and blue light. FIG. 3 shows the design transmittance of the 8th grade color vision correction lenses from B1 to B8 of the B group intended for color blind people who are relatively sensitive to red light and green light compared to blue light. A curve is shown.
As in the case of Patent Document 1, the multilayer film 2 is prepared by providing a total of 4 groups and 32 types of transmittance curves in addition to the A and B groups in addition to the C and D groups.

多層フィルム２は、ポリエステル等の透明樹脂から選んだ異なる熱可塑性樹脂を多層同時押出しすることで形成され、図１（ｂ）、（ｃ）の部分拡大図に示すように、異なる屈折率を有する２種の樹脂層２１ａ，２１ｂを交互に積層して形成された光学繰り返しユニット２１を多数備えている。それぞれの光学繰り返しユニット２１は、担当する波長領域の光に対し所定の反射率を有するよう形成され、光学繰り返しユニット２１を多数積層することで、図２に示したような各波長領域で透過率の変化する透過率曲線を形成する。   The multilayer film 2 is formed by multilayer co-extrusion of different thermoplastic resins selected from transparent resins such as polyester, and has different refractive indexes as shown in the partially enlarged views of FIGS. 1 (b) and 1 (c). A large number of optical repeating units 21 formed by alternately laminating two types of resin layers 21a and 21b are provided. Each optical repeating unit 21 is formed to have a predetermined reflectance with respect to light in the wavelength region in charge, and by laminating a large number of optical repeating units 21, the transmittance in each wavelength region as shown in FIG. To form a varying transmission curve.

光学繰り返しユニット２１を形成する異なる屈折率を有する２種の透明な熱可塑性樹脂の組み合わせとしては、例えば、ポリエチレンテレフタレートとポリメチルメタアクリレートの組み合わせや、ポリブチレンテレフタレートとポリメチルメタアクリレートの組み合わせ等を挙げることができ、その他、公知の樹脂の組み合わせを適宜用いることができる。   Examples of the combination of two transparent thermoplastic resins having different refractive indexes forming the optical repeating unit 21 include a combination of polyethylene terephthalate and polymethyl methacrylate, a combination of polybutylene terephthalate and polymethyl methacrylate, and the like. In addition, a combination of known resins can be used as appropriate.

光学繰り返しユニット２１は、下記式（１）により、担当する波長領域に対応して全体の厚みが決定される。
λM＝（２／Ｍ）・Ｄr （１）
ここで、λMは、反射光の波長、Ｍは反射光の次数を表す整数であり、Ｄrは光学繰り返しユニットの光学的厚さである。
そして、各光学繰り返しユニット２１の反射率は屈折率の異なる２種の層２１ａ、２１ｂの屈折率差、光学的厚さの比、層数等により決定される。 The entire thickness of the optical repeat unit 21 is determined in accordance with the wavelength region in charge by the following formula (1).
λ M = (2 / M) · D r (1)
Here, λ M is the wavelength of the reflected light, M is an integer representing the order of the reflected light, and Dr is the optical thickness of the optical repeat unit.
The reflectance of each optical repeating unit 21 is determined by the difference in refractive index between the two types of layers 21a and 21b having different refractive indexes, the ratio of the optical thickness, the number of layers, and the like.

多層フィルム２はラミネート等の公知の方法を適宜用いてレンズ基体１に貼着される。   The multilayer film 2 is attached to the lens substrate 1 by appropriately using a known method such as laminating.

本発明の色覚補正レンズ１０を備えた色覚補正メガネ（図示せず）を色覚異常者に提供するにあたっては、まず、色覚異常者の色覚特性と、近視、遠視、及び乱視の有無と度数を検査により特定し、色覚異常者の近視等の度数に適合したレンズ基体１を選択する。これに色覚異常者の色覚特性に合わせた透過率曲線を備えた多層フィルム２を貼着する。その後、色覚補正レンズ１０をメガネフレーム（不図示）に合わせて加工し、色覚補正メガネ（不図示）を作成する。本発明の色覚補正レンズ及び色覚補正メガネは、このように、色覚等の検査を終えた後、短時間で製作することができるため、レンズ基体と多層フィルムとを別々に在庫しておけば済み、在庫品の種類を抑制することができる。   In providing color vision glasses (not shown) equipped with the color vision correction lens 10 of the present invention to a color blind person, first, the color vision characteristics of the color blind person and the presence and frequency of myopia, hyperopia, and astigmatism are examined. The lens base 1 that is specified by the above and is adapted to the power of the myopia of the color blind person is selected. A multilayer film 2 having a transmittance curve that matches the color vision characteristics of the color vision deficient person is attached thereto. Thereafter, the color vision correction lens 10 is processed in accordance with a spectacle frame (not shown) to create color vision correction glasses (not shown). Since the color vision correction lens and the color vision correction glasses of the present invention can be manufactured in a short time after the inspection of the color vision and the like in this way, it is sufficient to stock the lens base and the multilayer film separately. The type of inventory can be suppressed.

本発明の色覚補正レンズは、上記の実施形態に限らず、図４（ａ）の色覚補正レンズ２０に示すように、レンズ基体２１の裏面に多層フィルム２を貼着してもよく、図４（ｂ）の色覚補正レンズ３０に示すように、表裏２枚のレンズ基体３１，３１の間にサンドイッチ状に多層フィルム２を挟むこともできる。また、多層フィルム２は、貼着面を糊面に形成してもよい。光学繰り返しユニットは、異なる２層の樹脂を繰り返し積層して形成するフォトニック結晶型に限らず、多層フィルム２の少なくとも一部にコレステリック液晶を固定化して形成したコレステリック液晶型の層を用いてもよい。レンズ基体は、両面にハードコートを施してもよいし、撥水コート等多層フィルムでは得られない性能をレンズに具備させるために各種の公知のコーティングを行うことができる。また、本発明の色覚補正レンズは、眼鏡用のレンズに限らずコンタクトレンズに用いることもできる。尚、図４中、２３，３３は、ハードコート層を示している。   The color vision correction lens of the present invention is not limited to the above embodiment, and as shown in the color vision correction lens 20 of FIG. 4A, the multilayer film 2 may be attached to the back surface of the lens base 21, as shown in FIG. As shown in the color vision correction lens 30 in (b), the multilayer film 2 can be sandwiched between two lens bases 31 and 31 on the front and back sides. Moreover, the multilayer film 2 may form the sticking surface in the paste surface. The optical repeating unit is not limited to the photonic crystal type formed by repeatedly laminating two different layers of resin, but may also use a cholesteric liquid crystal type layer formed by fixing cholesteric liquid crystal to at least a part of the multilayer film 2. Good. The lens substrate may be hard-coated on both sides, and various known coatings can be applied to provide the lens with performance that cannot be obtained with a multilayer film such as a water-repellent coating. In addition, the color vision correction lens of the present invention can be used not only for spectacle lenses but also for contact lenses. In FIG. 4, reference numerals 23 and 33 denote hard coat layers.

１０，２０，３０ 色覚補正レンズ
１，２１，３１ レンズ基体
２ 多層フィルム 10, 20, 30 Color vision correction lens 1, 21, 31 Lens substrate 2 Multilayer film

Claims (4)

レンズ基体と、
色覚異常者の色覚を補正する透過率曲線を有する多層フィルムと、
を備えた色覚補正レンズ。 A lens substrate;
A multilayer film having a transmittance curve that corrects color vision of color blind persons;
A color vision correction lens. 前記レンズ基体が近視、遠視、及び乱視からなる群より選ばれた一又は複数の症状を矯正する機能を有する請求項１に記載の色覚補正レンズ。   The color vision correction lens according to claim 1, wherein the lens base has a function of correcting one or a plurality of symptoms selected from the group consisting of myopia, hyperopia, and astigmatism. 前記レンズ基体をさらに１枚備え、
前記多層フィルムが２枚のレンズ基体間にサンドイッチ状に挟まれるよう設けられている請求項１又は請求項２に記載の色覚補正レンズ。 Further comprising one lens substrate,
The color vision correction lens according to claim 1, wherein the multilayer film is provided so as to be sandwiched between two lens substrates. 請求項１から請求項３に記載の色覚補正レンズを備えた色覚補正メガネ。   Color vision correction glasses comprising the color vision correction lens according to claim 1.
JP2013260115A 2013-12-17 2013-12-17 Color vision correction lens and color vision correction spectacles Pending JP2015118156A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105388633A (en) * 2015-12-21 2016-03-09 瑞安市圣视光学有限公司 Night vision lens
EP3677951A1 (en) * 2019-01-04 2020-07-08 Nam Gi Min Color weakness contact lens comprising a micro-pattern having photonic crystal structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105388633A (en) * 2015-12-21 2016-03-09 瑞安市圣视光学有限公司 Night vision lens
EP3677951A1 (en) * 2019-01-04 2020-07-08 Nam Gi Min Color weakness contact lens comprising a micro-pattern having photonic crystal structure

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