WO2014038632A1 - 光学製品及び眼鏡プラスチックレンズ - Google Patents
光学製品及び眼鏡プラスチックレンズ Download PDFInfo
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- WO2014038632A1 WO2014038632A1 PCT/JP2013/073958 JP2013073958W WO2014038632A1 WO 2014038632 A1 WO2014038632 A1 WO 2014038632A1 JP 2013073958 W JP2013073958 W JP 2013073958W WO 2014038632 A1 WO2014038632 A1 WO 2014038632A1
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- optical
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- multilayer film
- refractive index
- film
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
- G02B1/115—Multilayers
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/16—Laminated or compound lenses
Definitions
- the present invention relates to an optical product such as a spectacle lens or a spectacle plastic lens.
- an optical multilayer film as an antireflection film is formed on the surface.
- Such an optical multilayer film is formed by alternately laminating about several layers of low refractive index layers and high refractive index layers. From the viewpoint of processing stability and appearance, the maximum point of reflectance is 520 nm (nanometers). ) W-type antireflection film with a spectral distribution of reflectance in the vicinity is often used, and when an optical product with an optical multilayer film on which light is incident is viewed from the incident side, a light green reflection image can be seen (glasses) This phenomenon is also observed in plastic lenses).
- the one of the following Patent Document 1 has been proposed by the present applicant.
- the reflected color is colorless and transparent in the chromaticity diagram (x, y, Y) of the CIE color system (0.27 ⁇ x ⁇ 0.30 and 0.30 ⁇ y). ⁇ 0.36), and the reflectance is extremely low at 1% (percent) or less in the visible region.
- the total physical film thickness of the fourth layer or the fifth layer when the low refractive index layer and the high refractive index layer are alternately laminated in total is within a specific range, It is made to be within the range related to the chromaticity diagram of FIG.
- the reflection color is colorless and inconspicuous
- the reflectance is always maintained in the vicinity of 0.5% in the wavelength region of 450 to 650 nm. Furthermore, the reflectance in the visible region is reduced, leaving room for the reflected light to be inconspicuous.
- an object of the invention described in claim 1 is to provide an optical product that has a high visible light transmittance, a sufficiently low reflectance, and a reflection color that is extremely inconspicuous.
- an invention according to claim 1 is an optical product in which an optical multilayer film is provided on an optical product substrate, and the color of reflected light in the optical multilayer film is a CIE color system.
- the conditions of 0.27 ⁇ x ⁇ 0.31 and 0.30 ⁇ y ⁇ 0.36 are satisfied, and more than 420 nm and less than 680 nm
- the reflectance is always 1% or less
- the Y is 0.5% or less
- the optical multilayer film is an odd layer when the optical product substrate side is the first layer. Is a low-refractive index layer, and the even-numbered layer is a high-refractive index layer.
- the sixth layer has an optical film thickness of ⁇ of the design wavelength (480 nm to 520 nm). As any value within the range), 0.530 ⁇ or more and 0. It is characterized by being 605 ⁇ or less.
- the optical film thickness of the third layer of the optical multilayer film is 0.160 ⁇ or more and 0.296 ⁇ or less, or the value p obtained by dividing the optical film thickness of the third layer of the optical multilayer film by ⁇ ,
- the invention described in claim 5 relates to a spectacle plastic lens in order to achieve the object of providing a spectacle plastic lens belonging to an optical product that is very inconspicuous of reflected light as described above.
- the optical product substrate is an eyeglass plastic lens substrate.
- a slight amount of reflected light reflected even on the surface that is prevented from being reflected by the optical multilayer film is 0.27 in the chromaticity diagram (x, y, Y) of the CIE color system. ⁇ x ⁇ 0.31 and 0.30 ⁇ y ⁇ 0.36 are satisfied, and the reflectance is always 1% or less in the wavelength range of 420 nanometers to 680 nanometers. (Sensitivity reflectance) is 0.5% or less, and the optical multilayer film has an odd layer as a low refractive index layer and an even layer as a high layer when the optical product substrate side is the first layer.
- the refractive index layer has a total of 7 layers, and the optical thickness of the sixth layer is 0.530 ⁇ , where ⁇ is a design wavelength (any value within the range of 480 to 520 nm). It is made to be above 0.605 ⁇ . Therefore, it is possible to make the reflected light have a very low level of reflectance and a near-achromatic color with very low saturation and less tint than the conventional reflected color, which has low attractiveness, that is, conspicuousness. It can be difficult.
- 6 is a graph showing spectral reflectance characteristics of Examples 1 to 3 and Comparative Example 1. 6 is a graph showing spectral reflectance characteristics of Examples 4 to 5 and Comparative Example 2.
- (A) is a diagram showing each position in the chromaticity diagram of the CIE color system of reflected light according to Examples 1 to 3 and Comparative Example 1, and (b) is a diagram illustrating Examples 4 to 5 and Comparative Example 2.
- FIG. 5C is a diagram illustrating each position in the chromaticity diagram of the CIE color system of reflected light
- FIG. 8C is a chromaticity of the CIE color system of reflected light according to Examples 1 to 5 and Comparative Examples 1 and 2. It is a table
- the optical lens as an example of the optical product in the present invention has a hard coat film and an optical multilayer film in this order from the lens base on the surface of the lens base.
- a primer layer is formed between the lens substrate surface and the hard coat film
- an antifouling film is formed on the surface of the optical multilayer film, or between the lens substrate surface and the hard coat film, or between the hard coat layer and the optical multilayer film.
- the film configuration can be changed to another, such as providing an intermediate layer between the optical multilayer film and the antifouling film, or omitting the hard coat film.
- a hard coat film, an optical multilayer film, or the like may be formed on the back surface or both front and back surfaces of the lens substrate.
- the antifouling film is preferably formed of a silane compound having a perfluoropolyether group.
- Examples of the material (base material) of the lens substrate include plastic and glass.
- Examples of the plastic include polyurethane resin, episulfide resin, polycarbonate resin, polyester resin, acrylic resin, polyether sulfone resin, and poly 4- Examples thereof include methylpentene-1 resin and diethylene glycol bisallyl carbonate resin.
- suitable lenses having a high refractive index include polyurethane resins obtained by addition polymerization of polyisocyanate compounds and polythiols and / or sulfur-containing polyols.
- An episulfide resin obtained by addition polymerization of an episulfide group and a polythiol and / or a sulfur-containing polyol can be mentioned.
- the hard coat film is particularly preferably composed of an organosiloxane resin and inorganic oxide fine particles.
- the hard coat liquid for this purpose is prepared by dispersing (mixing) an organosiloxane resin and an inorganic oxide fine particle sol as main components in water or an alcohol solvent.
- the organosiloxane resin is preferably obtained by hydrolyzing and condensing alkoxysilane.
- alkoxysilane include ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, methyltrimethoxysilane, and ethyl silicate.
- These hydrolysis-condensation products of alkoxysilane are produced by hydrolyzing the alkoxysilane compound or a combination thereof with an acidic aqueous solution such as hydrochloric acid.
- the inorganic oxide fine particles for example, zinc oxide, silicon dioxide, aluminum oxide, titanium oxide, zirconium oxide, tin oxide, beryllium oxide, antimony oxide, tungsten oxide, cerium oxide sol alone or in combination of two or more.
- a mixed crystal can be used.
- the size of the inorganic oxide fine particles is preferably 1 to 100 nanometers (nm) and more preferably 1 to 50 nm in order to ensure the transparency of the hard coat film.
- the blending amount of the inorganic oxide fine particles preferably accounts for 40 to 60% by weight in the hard coat component in order to ensure an appropriate degree of hardness and toughness in the hard coat film.
- an acetylacetone metal salt, an ethylenediaminetetraacetic acid metal salt, or the like can be added to the hard coat solution as a curing catalyst, if necessary.
- the film thickness of the hard coat film is preferably 0.5 to 4.0 ⁇ m (micrometer), more preferably 1.0 to 3.0 ⁇ m.
- the lower limit of the film thickness practical hardness is not obtained if it is too thin, so it is set not to be too thin.
- the upper limit although the hardness increases as the thickness increases, the possibility of occurrence of cracks increases when the thickness is increased too much, and the possibility of problems with physical properties such as the tendency to become brittle increases.
- the optical multilayer film is formed by alternately laminating low refractive index layers and high refractive index layers by a vacuum deposition method, a sputtering method, or the like.
- Inorganic oxides are used for each layer.
- examples of inorganic oxides include silicon oxide, and titanium oxide, zirconium oxide, aluminum oxide, yttrium oxide, tantalum oxide, hafnium oxide, tin oxide, niobium oxide, and oxide having a higher refractive index.
- examples include cerium and indium oxide.
- insufficient equivalent titanium oxide TiOx, x ⁇ 2 and close to 2 can be used, and an ITO film can be used in at least one layer.
- the optical multilayer film is designed as an antireflection film and further has the following characteristics. That is, with respect to the color of the reflected light that is slightly reflected, x in the chromaticity diagram (x, y, Y) of the CIE color system is in the range of 0.27 to 0.31, and y is 0.30 to The color is in the range of 0.36, and the color is extremely inconspicuous. In the visible wavelength range of 420 to 680 nm, the reflectance is 1% or less, and the visibility reflectance Y is 0.5% or less.
- Examples 1 to 5 were prepared as belonging to the optical product according to the present invention as described below. For comparison with Examples 1 to 5, Comparative Examples 1 and 2 not belonging to the present invention were prepared. For each of Examples 1 to 5 and Comparative Examples 1 and 2, the spectral reflectance characteristics in the visible light region are measured, and the chromaticity diagram of each CIE color system of the reflected light that is still reflected and prevented from being reflected. Measurement of (x, y, Y) was performed.
- the lens bases of Examples 1 to 5 and Comparative Examples 1 and 2 were plastic flat lenses, and in each case, a polyurethane resin having a refractive index of 1.60 was used. These lens bases can be used as spectacle plastic lens bases, and have a standard size for spectacle plastic lenses.
- each lens substrate was an optical multilayer film having a seven-layer structure.
- the odd layer is formed of silicon dioxide (low refractive index material) and the even layer is titanium dioxide (high refractive index material).
- the first to seventh layers were sequentially deposited so as to have optical film thicknesses as shown in [Table 1] to [Table 6] below.
- [Table 1] to [Table 5] show the optical film thickness of each layer in Examples 1 to 5 in order
- [Table 6] to [Table 7] show the optical film of each layer in Comparative Examples 1 to 2 in order. Indicates thickness etc.
- the design wavelength (center wavelength) ⁇ is mainly 500 nm, but can be arbitrarily changed in the range of 480 to 520 nm.
- ⁇ 500 nm
- the refractive index of silicon dioxide is 1.4693
- the refractive index of titanium dioxide is 2.4176.
- FIG. 1 shows a graph showing the spectral reflectance characteristics of Examples 1 to 3 and Comparative Example 1
- FIG. 2 shows a graph showing the spectral reflectance characteristics of Examples 4 to 5 and Comparative Example 2.
- FIG. 3A shows a diagram representing each position in the chromaticity diagram of the CIE color system of reflected light according to Examples 1 to 3 and Comparative Example 1
- FIG. 3C is a diagram illustrating each position in the chromaticity diagram of the CIE color system of reflected light according to 4 to 5 and Comparative Example 2
- FIG. 3C illustrates Examples 1 to 5 and Comparative Examples 1 and 2.
- or the visibility reflectance Y in the chromaticity diagram of the CIE color system of reflected light is shown.
- Spectral reflectivity is measured on one side of a lens using a lens spectral reflectometer (USPM-RU manufactured by Olympus Corporation). Each chromaticity coordinate value is calculated as an object color by spectral colorimetry based on spectral reflectance, assuming that the light source is a D65 light source and the viewing angle is 2 degrees.
- Example 1 third layer optical film thickness 0.296 ⁇ ⁇ sixth layer optical film thickness 0.532 ⁇
- (x, y) (0.30, 0, 33).
- Example 2 third layer optical film thickness 0.251 ⁇ ⁇ sixth layer optical film thickness 0.556 ⁇
- (x, y) (0.31, 0.33) and extremely low saturation
- the visibility reflectance Y is also very low at 0.24.
- Example 3 third layer optical film thickness 0.204 ⁇ ⁇ sixth layer optical film thickness 0.571 ⁇
- (x, y) (0.31, 0.35) and extremely low saturation
- the visibility reflectance Y is also very low at 0.22.
- Example 4 third layer optical film thickness 0.191 ⁇ ⁇ sixth layer optical film thickness 0.580 ⁇
- (x, y) (0.30, 0.33) and extremely low saturation
- the visibility reflectance Y is also very low at 0.27.
- Example 5 third layer optical film thickness 0.162 ⁇ ⁇ sixth layer optical film thickness 0.604 ⁇
- (x, y) (0.30, 0.30) and extremely low saturation
- the visibility reflectance Y is also very low at 0.34.
- Comparative Example 1 third layer optical film thickness 0.123 ⁇ ⁇ sixth layer optical film thickness 0.508 ⁇
- Comparative Example 2 third layer optical film thickness 0.159 ⁇ ⁇ sixth layer optical film thickness 0.629 ⁇
- (x, y) (0.31, 0.31) and extremely low saturation.
- the visibility reflectance Y is 0.74, which does not reach the level of 0.50 or less.
- the reflectance is always 1% in the wavelength range of 420 to 680 nm, and the luminous reflectance Y is 0.5% or less. It is possible to provide an optical product that generates a very small amount of light, and that the color of the reflected light is an achromatic color and the reflected light is extremely inconspicuous. In this optical product, when considering Comparative Examples 1 and 2, the optical thickness of the sixth layer of the optical multilayer film is 0.530 ⁇ or more and 0.605 ⁇ or less.
- the optical film thickness of the sixth layer being in the above specified range is effective when the reflected light slightly reflected is extremely low in saturation and the visibility reflectance is reduced to a high level.
- the optical thickness of the third layer is within the following range. That is, the optical thickness of the third layer is preferably 0.160 ⁇ or more and 0.296 ⁇ or less.
- the reflected light can be made colorless and the visibility reflectance can be increased. It turns out.
- a graph explaining this relationship is shown in FIG.
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Abstract
Description
以下に説明するように、本発明に係る光学製品に属するものとして、実施例1~5を作成した。又、実施例1~5と対比させるため、本発明に属さない比較例1~2を作成した。そして、実施例1~5及び比較例1~2のそれぞれに関し、可視光領域における分光反射率特性の測定と、反射を防止してなお反射された反射光の各CIE表色系の色度図(x,y,Y)の測定を実施した。
実施例1~5及び比較例1~2のレンズ基体はプラスチック製のフラットレンズとし、何れにおいても屈折率1.60のポリウレタン樹脂を用いた。これらのレンズ基体は、眼鏡プラスチックレンズ基体として用いることが可能であり、眼鏡プラスチックレンズにおける標準的な大きさとした。
図1に、実施例1~3及び比較例1の分光反射率特性を表すグラフを示し、図2に、実施例4~5及び比較例2の分光反射率特性を表すグラフを示す。又、図3(a)に、実施例1~3及び比較例1に係る、反射光のCIE表色系の色度図における各位置を表す図を示し、図3(b)に、実施例4~5及び比較例2に係る、反射光のCIE表色系の色度図における各位置を表す図を示し、図3(c)に、実施例1~5及び比較例1~2に係る、反射光のCIE表色系の色度図における各位置ないし視感度反射率Yを表す表を示す。
上述の通り、実施例1~7によれば、奇数層が低屈折率層であり且つ偶数層が高屈折率層である合計7層の光学多層膜(反射防止膜)において、0.27≦x≦0.31且つ0.30≦y≦0.36であり、420~680nmの波長範囲で反射率が常に1%であり、更に視感度反射率Yが0.5%以下である、反射光が極めて僅かにしか発生せずしかも反射光の色が無彩色であって反射光が極めて目立ち難い光学製品を提供することができる。この光学製品においては、比較例1~2を合わせて考えれば、光学多層膜の第6層目の光学膜厚が、0.530λ以上0.605λ以下となるものである。
q=-0.50p+0.68
Claims (5)
- 光学製品基体の上に光学多層膜を設けた光学製品であって、
前記光学多層膜における反射光の色が、CIE表色系の色度図(x,y,Y)において、0.27≦x≦0.31、且つ、0.30≦y≦0.36の条件を満たし、
更に、420ナノメートル以上680ナノメートル以下の波長範囲で、反射率が常に1パーセント以下であり、
前記Yが0.5パーセント以下であって、
且つ、前記光学多層膜は、前記光学製品基体側を第1層とした場合に、奇数層を低屈折率層とすると共に、偶数層を高屈折率層とした合計7層を有するものであり、第6層の光学膜厚が、λを設計波長(480ナノメートル以上520ナノメートル以下の範囲内の何れかの値)として、0.530λ以上0.605λ以下である
ことを特徴とする光学製品。 - 前記光学多層膜の第3層の光学膜厚が、0.160λ以上0.296λ以下である
ことを特徴とする請求項1に記載の光学製品。 - 前記光学多層膜の第3層の光学膜厚を前記λで除した値pと、前記光学多層膜の第6層の光学膜厚を前記λで除した値qとが、以下に示す式で表される関係を有している
ことを特徴とする請求項1又は請求項2に記載の光学製品。
q=-0.50p+0.68 - 前記高屈折率層は、チタン酸化物である
ことを特徴とする請求項1ないし請求項3の何れかに記載の光学製品。 - 請求項1ないし請求項4の何れかに記載の光学製品にあって、前記光学製品基体が眼鏡プラスチックレンズ基体であることを特徴とする眼鏡プラスチックレンズ。
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EP13834442.9A EP2881763B1 (en) | 2012-09-07 | 2013-09-05 | Optical product and plastic eyeglass lens |
CN201380046552.XA CN104603644B (zh) | 2012-09-07 | 2013-09-05 | 光学制品以及眼镜塑料镜片 |
US14/627,424 US9651713B2 (en) | 2012-09-07 | 2015-02-20 | Optical product and spectacle plastic lens |
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EP2988153B1 (en) | 2014-08-18 | 2021-02-17 | Essilor International | Ophthalmic lens comprising an antireflective coating with a low reflection in the ultraviolet region |
EP3528036A1 (en) * | 2018-02-15 | 2019-08-21 | Essilor International | Ophthalmic tinted lens |
CN109143600A (zh) * | 2018-09-04 | 2019-01-04 | 长春理工大学光电信息学院 | 一种3d镜片及其制备方法 |
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CN104603644B (zh) | 2016-08-24 |
US9651713B2 (en) | 2017-05-16 |
EP2881763A4 (en) | 2015-08-19 |
JP6016155B2 (ja) | 2016-10-26 |
US20150192701A1 (en) | 2015-07-09 |
EP2881763A1 (en) | 2015-06-10 |
KR20150048758A (ko) | 2015-05-07 |
CN104603644A (zh) | 2015-05-06 |
JP2014052542A (ja) | 2014-03-20 |
KR102056339B1 (ko) | 2019-12-16 |
EP2881763B1 (en) | 2017-11-08 |
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