JPH0677081B2 - Colored antireflection film - Google Patents
Colored antireflection filmInfo
- Publication number
- JPH0677081B2 JPH0677081B2 JP61107373A JP10737386A JPH0677081B2 JP H0677081 B2 JPH0677081 B2 JP H0677081B2 JP 61107373 A JP61107373 A JP 61107373A JP 10737386 A JP10737386 A JP 10737386A JP H0677081 B2 JPH0677081 B2 JP H0677081B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- film
- colored
- antireflection film
- coloring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 a.技術分野 本発明は、サングラスやファッショングラスの如き眼鏡
の着色反射防止膜に関するもので、更に詳しくはガラス
側及び空気側からみた反射光の色が同一となる着色コー
ティングに関する。TECHNICAL FIELD The present invention relates to a colored antireflection film for spectacles such as sunglasses and fashion glasses, and more specifically, coloring in which reflected light has the same color when viewed from the glass side and the air side. Regarding coating.
b.従来技術およびその問題点 一般に着色材を使用する場合、着色層の両側の媒質が異
なる時、その吸収係数のためにおこる位相シフトが入射
方向により異なり、小さな濃度を得るための小さい吸収
係数または薄い着色層の利用の場合は両側の反射特性に
大きな差は生じないが、大きな濃度を得るための大きい
吸収係数または厚い着色層の利用の場合にはその程度が
大となり、反射特性が両方向で共に満足することは出来
なくなる。従って、透明反射防止膜のいずれかの層間に
着色層を割込ませたり、或いは、透明反射防止膜層の１
層を着色層に置換えたりする場合は、着色層の両側の媒
質が異なるため、この傾向が顕著である。b. Prior art and its problems In general, when a coloring material is used, when the media on both sides of the coloring layer are different, the phase shift caused by the absorption coefficient differs depending on the incident direction, and a small absorption coefficient for obtaining a small concentration. When a thin colored layer is used, there is no significant difference in the reflection characteristics on both sides, but when a large absorption coefficient or a thick colored layer is used to obtain a large concentration, the degree is large, and the reflection characteristics are bidirectional. We can't be satisfied with each other. Therefore, a colored layer may be inserted between any of the layers of the transparent antireflection film, or one of the transparent antireflection film layers may be formed.
This tendency is remarkable when the layer is replaced with a colored layer because the medium on both sides of the colored layer is different.
また、実際には利用可能な薬品には、小さい吸収係数
で、膜設計上通常の膜厚で設計される着色材単体での材
料はなく、通常、透明材料に着色材を少量混合する方法
で薬品を作るが、その場合には膜組成を安定させる問題
が起こる。また、薄層で多分割する方法もあるが、薄い
ための製作上の困難がある。In addition, actually, there is no colorant simple substance designed to have a small film absorption coefficient and a normal film thickness in the film design, and it is usually possible to mix a small amount of colorant with a transparent material. A chemical is produced, but in that case, there arises a problem of stabilizing the film composition. There is also a method of dividing into multiple layers in a thin layer, but it is difficult to manufacture because it is thin.
c.目的 本発明は上記の点に鑑み、着色材そのものを用い、透明
６層反射防止膜の下地より第２番目の高屈折率層を同じ
膜厚の着色層でサンドイッチすることにより、着色反射
防止膜の表裏２方向の分光反射特性を共に満足する濃度
範囲を広げた眼鏡用着色反射防止膜を提供するものであ
る。c. Objective In view of the above points, the present invention uses the coloring material itself, and sandwiches the second high refractive index layer from the base of the transparent 6-layer antireflection film with the colored layer having the same thickness to obtain the colored reflection. It is intended to provide a colored antireflection film for spectacles, which has a widened concentration range that satisfies both the spectral reflection characteristics of the antireflection film in the front and back directions.
d.実施例の構成 本発明の膜構成を以下説明する。d. Structure of Examples The film structure of the present invention will be described below.
高屈折率層の屈折率がnH＝2.08、低屈折率層の屈折率が
nL＝1.38であり、下地ガラスの屈折率が1.60である時の
透明な６層基本反射防止膜構成（ａ）を第１表に示す。
これは着色層の膜厚０と同意である。The refractive index of the high refractive index layer is n H = 2.08, and the refractive index of the low refractive index layer is
Table 1 shows a transparent 6-layer basic antireflection film constitution (a) when n L = 1.38 and the refractive index of the underlying glass is 1.60.
This is synonymous with the thickness of the colored layer being 0.
下地より第２番目の高屈折率層を同じ膜厚の着色層でサ
ンドイッチした本発明の膜構成を第2,3,4表に示す。着
色材としてはブラウン系としてよく使われる、Cr2O3とF
e2O3の混合物を使用する。Tables 2, 3 and 4 show the film constitution of the present invention in which the second high refractive index layer from the underlayer is sandwiched by colored layers having the same thickness. Cr 2 O 3 and F, which are often used as colorants for browns
Use a mixture of e 2 O 3 .
まず、Cr2O3：Fe2O3＝1:0wtを着色材とした場合、着色
層の光学定数は屈折率2.446,吸収係数0.092であり、着
色層の膜厚（nd）が15nmの膜構成（ｂ）と25nmの膜構成
（ｃ）を第２表に示す。First, when Cr 2 O 3 : Fe 2 O 3 = 1: 0 wt is used as the coloring material, the optical constant of the coloring layer is 2.446, the absorption coefficient is 0.092, and the thickness (nd) of the coloring layer is 15 nm. Table 2 shows the structure (b) and the film structure (c) of 25 nm.
次に、Cr2O3：Fe2O3＝2:1wtを着色材とした場合、着色
層の光学定数は屈折率2.495,吸収係数0.210であり、着
色層の膜厚が12.5nmの膜構成（ｄ）と20.0nmの膜構成
（ｅ）を第３表に示す。Next, when Cr 2 O 3 : Fe 2 O 3 = 2: 1 wt is used as the coloring material, the optical constant of the coloring layer is 2.495 and the absorption coefficient is 0.210, and the thickness of the coloring layer is 12.5 nm. Table 3 shows (d) and the film configuration (e) of 20.0 nm.
更に、Cr2O3：Fe2O3＝0:1wtを着色材とした場合、着色
層の光学定数は屈折率1.870,吸収係数0.085であり、着
色層の膜厚が22.5nmの膜構成（ｆ）と37.5nmの膜構成
（ｇ）を第４表に示す。Furthermore, when Cr 2 O 3 : Fe 2 O 3 = 0: 1 wt is used as the coloring material, the optical constant of the coloring layer is 1.870, the absorption coefficient is 0.085, and the film thickness of the coloring layer is 22.5 nm ( f) and the film constitution (g) of 37.5 nm are shown in Table 4.
そして、前記膜構成（ａ），（ｂ），（ｃ）の分光透過
率を第１図に、（ｂ），（ｃ）の両面分光反射率を第２
図に示す。同様に膜構成（ａ），（ｄ），（ｅ）に関
し、分光透過率を第３図に、（ｄ），（ｅ）の両面分光
反射率を第４図に、また膜構成（ａ），（ｆ），（ｇ）
に関し、分光透過率を第５図に、（ｆ），（ｇ）の両面
分光反射率を第６図に示す。The spectral transmittances of the film configurations (a), (b), and (c) are shown in FIG. 1, and the double-sided spectral reflectances of (b) and (c) are shown in FIG.
Shown in the figure. Similarly, regarding the film configurations (a), (d), and (e), the spectral transmittance is shown in FIG. 3, the double-sided spectral reflectances of (d) and (e) are shown in FIG. 4, and the film configuration (a). , (F), (g)
5 shows the spectral transmittance, and FIG. 6 shows the double-sided spectral reflectances of (f) and (g).
e.作用 従来技術の項で説明したように、２方向位相シフトを一
致させるには着色層の両側が同媒質である必要がある。
本発明では透明な６層反射防止膜の下地より第２番目の
高屈折層を同じ膜厚の着色層でサンドイッチするが、そ
うすることによって着色層とその両側膜材料との関係が
下地より第２番目の高屈折層を中心に対称となり、２方
向の入射光線に対して着色材の吸収係数や膜厚による位
相シフトは同一となる。この対称３層膜構成は屈折率Ne
q,吸収係数Keqをもつ等価膜とみることが出来、この両
側媒質が同じであることから２方向の入射光線に対する
位相シフトが同一であると理解出来るものである。 e. Action As described in the section of the prior art, both sides of the colored layer must be the same medium in order to match the two-direction phase shift.
In the present invention, the second high-refractive-index layer is sandwiched by the colored layers having the same thickness from the underlying layer of the transparent 6-layer antireflection film. By doing so, the relationship between the colored layer and the film materials on both sides of the colored layer is greater than that of the underlying layer. The second high-refractive layer is symmetrical, and the phase shift due to the absorption coefficient and the film thickness of the coloring material becomes the same for the incident light in two directions. This symmetrical three-layer film structure has a refractive index Ne
It can be regarded as an equivalent film having q and an absorption coefficient Keq, and since the media on both sides are the same, it can be understood that the phase shifts for incident rays in two directions are the same.
f.効果 本発明のサンドイッチ膜構成の効果をみるために、透明
な反射防止膜（ａ）の１層を着色層に置換えた場合の分
光反射特性をみてみる。着色材が、Cr2O3：Fe2O3＝1:0,
2:1,0:1の時の膜構成（ｈ），（ｉ），（ｊ）を第５表
に、それらの両面での分光反射特性をそれぞれ第7,8,9
図に示す。膜構成（ｈ），（ｉ），（ｊ）の着色膜の膜
厚は、それぞれサンドイッチ膜構成の（ｂ），（ｄ），
（ｆ）の全膜厚と同じで、濃度は、ほぼ等しい。しかし
ながら両面での分光反射特性は、透明反射防止膜の１層
を着色層に置換えた（ｈ），（ｉ），（ｊ）は既に大き
な差が現われ、満足出来る状態ではないのに対し、サン
ドイッチ膜構成はいずれも満足しており、更に厚くした
膜構成（ｃ），（ｅ），（ｇ）においても許容出来る状
態である。f. Effect In order to see the effect of the sandwich film structure of the present invention, the spectral reflection characteristic when one layer of the transparent antireflection film (a) is replaced with a colored layer will be examined. The coloring material is Cr 2 O 3 : Fe 2 O 3 = 1: 0,
The film configurations (h), (i), and (j) at 2: 1, 0: 1 are shown in Table 5, and the spectral reflection characteristics on both sides are shown in Tables 7, 8, and 9, respectively.
Shown in the figure. The film thicknesses of the colored films of the film configurations (h), (i), and (j) are (b), (d), and (b) of the sandwich film configuration, respectively.
It is the same as the total film thickness in (f), and the concentrations are almost equal. However, with respect to the spectral reflection characteristics on both sides, (h), (i), and (j) in which one layer of the transparent antireflection film was replaced with a colored layer already showed a large difference and was not in a satisfactory state. The film configurations are all satisfactory, and even the thickened film configurations (c), (e), and (g) are in an acceptable state.
こうして透明な６層反射防止膜の下地より第２番目の高
屈折層を同じ膜厚の着色層でサンドイッチすることによ
って、着色膜の光学定数により差は出るものの、一様に
両面反射特性が共に満足する着色層の膜厚範囲、即ち濃
度範囲を拡張することが出来た。In this way, by sandwiching the second high-refractive layer from the base of the transparent 6-layer antireflection film with the colored layer having the same thickness, there is a difference depending on the optical constant of the colored film, but the two-sided reflection characteristics are uniform. It was possible to extend the film thickness range of the colored layer, that is, the concentration range, which was satisfied.
更に、透明反射防止膜の１層を着色層に置換えた
（ｈ），（ｉ），（ｊ）の場合は、指定された分光反射
特性を得るためには、一義的に定まる膜厚が決められ、
従って濃度は自由に選ぶことが出来ないのに対し、本発
明のサンドイッチ膜構成では、第1,3,5図にみられるよ
うに濃度を連続的に任意に得ることが出来る。Furthermore, in the case of (h), (i), and (j) in which one layer of the transparent antireflection film is replaced with a colored layer, a uniquely determined film thickness is determined in order to obtain the specified spectral reflection characteristics. The
Therefore, while the concentration cannot be freely selected, in the sandwich membrane structure of the present invention, the concentration can be continuously and arbitrarily obtained as shown in FIGS.
尚、この結果は、着色材として高い吸収係数をもつ素材
そのものが使用出来ることを意味し、層数の少ないこと
とも関連して膜組成の安定にもつながり、生産上のメリ
ット大である。In addition, this result means that the material itself having a high absorption coefficient can be used as the coloring material, which leads to a stable film composition in connection with the small number of layers, which is a great merit in production.
第１図の膜構成（ａ），（ｂ），（ｃ）の分光透過率を
示す図、第２図は（ｂ），（ｃ）の両面での分光反射率
を示す図である。 第３図は膜構成（ａ），（ｄ），（ｅ）の分光透過率を
示す図、第４図は（ｄ），（ｅ）の両面での分光反射率
を示す図である。 第５図は膜構成（ａ），（ｆ），（ｇ）の分光透過率を
示す図、第６図は（ｆ），（ｇ）の両面での分光反射率
を示す図である。 第7,8,9図はそれぞれ透明反射防止膜の１層を着色層と
した場合の膜構成（ｈ），（ｉ），（ｊ）の両面での分
光反射特性を示す図である。FIG. 1 is a diagram showing the spectral transmittances of the film configurations (a), (b) and (c), and FIG. 2 is a diagram showing the spectral reflectances on both sides of (b) and (c). FIG. 3 is a diagram showing the spectral transmittances of the film configurations (a), (d) and (e), and FIG. 4 is a diagram showing the spectral reflectances of both surfaces of (d) and (e). FIG. 5 is a diagram showing the spectral transmittances of the film configurations (a), (f) and (g), and FIG. 6 is a diagram showing the spectral reflectances of both surfaces (f) and (g). FIGS. 7, 8 and 9 are diagrams showing spectral reflection characteristics on both surfaces of the film constitutions (h), (i) and (j) in the case where one transparent antireflection film is used as a coloring layer.
Claims (3)
第２番目の高屈折層を、同じ膜厚の着色層でサンドイッ
チすることを特徴とする着色反射防止膜。1. A colored antireflection film comprising a transparent 6-layer antireflection film in which a second high-refractive-index layer from a base layer is sandwiched by colored layers having the same thickness.
であって、屈折率が1.870〜2.495,吸収係数が0.085〜0.
210であることを特徴とする特許請求の範囲第１項記載
の着色反射防止膜。2. The coloring material of the coloring layer is a mixture of Cr 2 O 3 and Fe 2 O 3 , having a refractive index of 1.870 to 2.495 and an absorption coefficient of 0.085 to 0.
210. The colored antireflection film according to claim 1, which is 210.
とによって、任意に濃度が変えられることを特徴とする
特許請求の範囲第１項記載の着色反射防止膜。3. The colored antireflection film according to claim 1, wherein the concentration can be arbitrarily changed by setting the thickness of the colored layer in the range of 0 to 37.5 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61107373A JPH0677081B2 (en) | 1986-05-10 | 1986-05-10 | Colored antireflection film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61107373A JPH0677081B2 (en) | 1986-05-10 | 1986-05-10 | Colored antireflection film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62264002A JPS62264002A (en) | 1987-11-17 |
| JPH0677081B2 true JPH0677081B2 (en) | 1994-09-28 |
Family
ID=14457455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61107373A Expired - Fee Related JPH0677081B2 (en) | 1986-05-10 | 1986-05-10 | Colored antireflection film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677081B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120075577A1 (en) | 2006-03-20 | 2012-03-29 | Ishak Andrew W | High performance selective light wavelength filtering providing improved contrast sensitivity |
| US8882267B2 (en) | 2006-03-20 | 2014-11-11 | High Performance Optics, Inc. | High energy visible light filter systems with yellowness index values |
| JP2014199327A (en) * | 2013-03-29 | 2014-10-23 | Hoya株式会社 | Spectacle lens |
-
1986
- 1986-05-10 JP JP61107373A patent/JPH0677081B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62264002A (en) | 1987-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |