WO2012043218A1 - 光学部品およびその製造方法 - Google Patents
光学部品およびその製造方法 Download PDFInfo
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- WO2012043218A1 WO2012043218A1 PCT/JP2011/070856 JP2011070856W WO2012043218A1 WO 2012043218 A1 WO2012043218 A1 WO 2012043218A1 JP 2011070856 W JP2011070856 W JP 2011070856W WO 2012043218 A1 WO2012043218 A1 WO 2012043218A1
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- refractive index
- layer
- optical component
- multilayer film
- plastic substrate
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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
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- G02B1/105—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/221—Ion beam deposition
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- 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
-
- 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
- G02B1/14—Protective coatings, e.g. hard coatings
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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
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
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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
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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
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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
- G02C7/10—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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- 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
- G02C7/105—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having inhomogeneously distributed colouring
Definitions
- the present invention relates to an optical component and a manufacturing method thereof.
- This application claims priority based on Japanese Patent Application No. 2010-218711 filed in Japan on September 29, 2010 and Japanese Patent Application No. 2010-288319 filed on December 24, 2010 in Japan, The contents are incorporated here.
- plastic lenses are frequently used as spectacle lenses because of their advantages of being lightweight, excellent in impact resistance and easy to dye.
- a plastic lens used for a spectacle lens is usually provided with an antireflection film on both sides.
- the antireflection film for spectacle lenses generally has low reflection characteristics (broadband low reflection characteristics) over the entire visible region of 400 nm to 700 nm.
- optical parts such as eyeglass lenses
- optical parts including a plastic base as disclosed in Patent Documents 1 to 3, and an antireflection film disposed on the base.
- blue light hazard particularly around 435 to 440 nm, and it is said that it is desirable to cut light in this region.
- An object according to the present invention is to provide an optical component that has an antiglare effect, is effective in reducing fatigue, preventing eye diseases, and has good visibility, and a method for manufacturing the same.
- An optical component includes a plastic substrate having a convex surface and a concave surface, and a multilayer film disposed on at least the convex surface of the plastic substrate, the multilayer film having a thickness of 400 to 500 nm.
- the average reflectance in the wavelength range is 2 to 10%.
- a method of manufacturing an optical component comprising: a plastic substrate having a convex surface and a concave surface; and a multilayer film disposed on at least the convex surface of the plastic substrate.
- a method comprising: heating the plastic substrate; and adjusting the plastic substrate to a predetermined temperature by the heating, and then forming the multilayer film on the plastic substrate.
- the forming step includes a process of alternately stacking a plurality of high refractive index materials and low refractive index materials to form a high refractive index layer having a multilayer structure, and a refractive index lower than the high refractive index layer on the high refractive index layer. Forming a low-refractive-index layer having a refractive index, and the average reflectance of the multilayer film in the wavelength range of 400 to 500 nm is set to 2 to 10%.
- optical component in the aspect which concerns on this invention sufficient anti-glare effect is acquired, maintaining favorable visibility.
- the method for manufacturing an optical component in the aspect of the present invention it is possible to provide an optical component with reduced optical characteristics, easy to see, and effective in preventing fatigue and eye disease. .
- FIG. 3 is a spectral characteristic diagram of an antireflection film according to Example 1.
- 6 is a spectral characteristic diagram of an antireflection film according to Example 2.
- FIG. 6 is a spectral characteristic diagram of an antireflection film according to Example 3.
- 6 is a spectral characteristic diagram of an antireflection film according to Comparative Example 1.
- FIG. 6 is a spectral characteristic diagram of an antireflection film according to Example 4.
- FIG. 6 is a spectral characteristic diagram of an antireflection film according to Example 5.
- FIG. 10 is a spectral characteristic diagram of a convex surface of an antireflection film according to Example 6.
- FIG. 10 is a spectral characteristic diagram of the concave surface of the antireflection film according to Example 6.
- FIG. 11 is a spectral characteristic diagram of a convex surface of an antireflection film according to Example 7.
- FIG. 10 is a spectral characteristic diagram of the concave surface of the antireflection film according to Example 7. It is a wearing comparison evaluation result concerning experiment 3.
- FIG. 1 is a side cross-sectional view schematically showing an optical component according to a first embodiment of the present invention.
- Reference numeral 1 denotes an optical component for a spectacle lens.
- the optical component 1 includes a plastic substrate 2 and an inorganic multilayer film 3 disposed on the convex surface of the plastic substrate 2.
- a functional thin film 4 is disposed between the convex surface of the plastic substrate 2 and the inorganic multilayer film 3.
- This functional thin film 4 is composed of a primer layer 5 and a hard coat layer 6 in this embodiment.
- the respective films 3 and 4 disposed on the surface (convex surface) of the plastic substrate 2 will be mainly described. However, in actuality, the back surface (concave surface) of the plastic substrate 2 is also described. A film equivalent to each of the films 3 and 4 formed on the surface (convex surface) is formed.
- the plastic substrate 2 is, for example, a transparent plastic such as acrylic resin, thiourethane resin, methacrylic resin, allyl resin, episulfide resin, polycarbonate resin, polyurethane resin, polyester resin, polystyrene resin, episulfide. Resin, polyethersulfone resin, poly-4-methylpentene-1 resin, diethylene glycol bisallyl carbonate resin (CR-39), polyvinyl chloride resin, halogen-containing copolymer, sulfur-containing copolymer, etc. is there.
- the refractive index (nd) of the plastic substrate 2 is selected from, for example, 1.50, 1.60, 1.67, and 1.74.
- the plastic substrate 2 When the refractive index of the plastic substrate 2 is 1.6 or more, it is preferable to use an allyl carbonate resin, an acrylate resin, a methacrylate resin, a thiourethane resin, or the like as the plastic substrate 2. . Moreover, the plastic substrate 2 may not be transparent as long as it has translucency, and may be colored. The transmittance of the colored plastic substrate 2 is preferably 5 to 85%.
- the functional thin film 4 is disposed between the plastic substrate 2 and the inorganic multilayer film 3 as described above, and the primer layer 5 disposed in contact with the plastic substrate 2 and the primer layer 5 And a hard coat layer 6 disposed in contact with the inorganic multilayer film 3.
- the primer layer 5 is for improving the adhesion between the plastic substrate 2 and the hard coat layer 6 and functions as an adhesion layer. Moreover, it is also for absorbing the impact on the optical component 1 and functions as an impact absorbing layer.
- the primer layer 5 is mainly composed of a polyurethane-based resin, and in this embodiment, the polyurethane-based resin contains, for example, fine particles of an inorganic material.
- the primer layer 5 may include at least one of acrylic resin, methacrylic resin, and organosilicon resin.
- the thickness (actual thickness) of the primer layer 5 is preferably about 0.5 ⁇ m or more and 1.0 ⁇ m or less.
- Such a primer layer 5 can be formed with a predetermined thickness on the plastic substrate 2 by immersing the plastic substrate 2 in the forming material liquid of the primer layer 5 and then lifting and drying the same.
- a material for forming the primer layer 5 for example, a solution obtained by dispersing or dissolving the resin to be the primer layer 5 and the inorganic oxide fine particle sol in water or an alcohol solvent and mixing them can be used.
- the hard coat layer 6 has a function of protecting the plastic substrate 2 and suppressing damage to the plastic substrate 2, and functions as a scratch-resistant film.
- the hard coat layer 6 is made of, for example, an organosiloxane hard coat layer.
- the organosiloxane hard coat layer is obtained by dispersing inorganic oxide fine particles in an organosiloxane resin.
- the inorganic oxide for example, rutile type titanium oxide, oxides of silicon, tin, zirconium, and antimony are preferably used.
- the hard coat layer 6 may be an organic silicon-based resin containing colloidal silica as disclosed in, for example, Japanese Patent Publication No. 4-55615.
- the thickness (actual thickness) of the hard coat layer 6 is preferably about 2 ⁇ m to 4 ⁇ m.
- the hard coat layer 6 is formed on the primer layer 5 on the plastic substrate 2 by immersing the plastic substrate 2 on which the primer layer 5 is formed in the forming material solution of the hard coat layer 6, and then pulling up and drying. It can be formed with a thickness of As the liquid for forming the hard coat layer 6, for example, a liquid obtained by dispersing or dissolving the resin to be the hard coat layer 6 and the inorganic oxide fine particle sol in water or an alcohol solvent and mixing them can be used. .
- the interface between the functional thin film 4 and the plastic substrate 2 is sufficient if the refractive index and the refractive index of the plastic substrate 2 are substantially the same. Generation of interference fringes caused by reflection on the surface and a decrease in transmittance can be suppressed. Therefore, it is desirable to adjust the refractive index of the functional thin film 4 in accordance with the refractive index of the plastic substrate 2.
- the type (physical properties) of the resin that is the main component of the functional thin film 4 is selected, or the resin that is the main component of the resin. This can be done by selecting the type (physical properties) of the fine particles to be added.
- the functional thin film 4 is formed including the primer layer 5 and the hard coat layer 6.
- the primer layer 5 and the hard coat layer 6 are formed. It may be omitted.
- a dielectric film or a metal film made of ITO (Indium Tin Oxide) or the like may be provided in addition to the primer layer 5 and the hard coat layer 6.
- a dielectric film or a metal film having a thickness of 20 nm or less may be disposed between the high refractive index inorganic material and the low refractive index inorganic material constituting the inorganic multilayer film. Note that the thickness of the dielectric film or the metal film may be 10 nm or less.
- the inorganic multilayer film 3 has a high refractive index layer 7 having a multilayer structure in which a plurality of high refractive index inorganic materials and low refractive index inorganic materials are alternately laminated on the plastic substrate 2, and the high refractive index layer 7 having a low refractive index layer 8 made of a low refractive index inorganic material having a lower refractive index than that of the high refractive index layer 7, and serving as an antireflection film for preventing reflection of incident light. It has a function.
- the inorganic multilayer film 3 is designed so that the average reflectance in the wavelength range of 400 to 500 nm is 2 to 10%.
- the average reflectance when used as a spectacle lens, a sufficient antiglare effect can be obtained and good visibility can be maintained.
- the average reflectance in the wavelength region is set to 10% or more, a person wearing such spectacles feels troublesome in reflection by incident light from the concave surface of the spectacle lens.
- the average reflectance is preferably 3 to 10%.
- an inorganic multilayer film is used as the multilayer film, but an organic multilayer film may be used as long as the effects of the present invention are not impaired.
- the inorganic multilayer film 3 is preferably designed so that the reflectance is 1.5% or less in the wavelength region of 580 to 780 nm. With such a design, a spectacle lens having a further effect on the antiglare effect and the visibility can be obtained.
- the high refractive index layer 7 includes a first layer 9 made of a high refractive index inorganic material provided on the plastic substrate 2 side, and a low refractive index inorganic material provided on the first layer 9. And a third layer 11 made of a high refractive index inorganic material provided on the second layer 10.
- the first layer 9 is provided in contact with the hard coat layer 6 and is made of zirconium dioxide (ZrO 2 ) having a refractive index of 2.0.
- ZrO 2 zirconium dioxide
- titanium dioxide (TiO 2 ) or tantalum dioxide (Ta 2 O 5 ) can be used as the high refractive index inorganic material constituting the first layer 9.
- it can also be formed of an oxide of an alloy composed of a plurality of kinds of zirconium, titanium, and tantalum.
- Y 2 O 3 yttrium dioxide
- Nb 2 O 5 niobium dioxide
- the adhesion between the first layer 9 and the hard coat layer 6 can be obtained by forming the first layer 9 with the high refractive index inorganic material (ZrO 2 ).
- the adhesion (adhesive strength) between the layer (ZrO 2 ) made of the high refractive index inorganic material and the hard coat layer 6 is more closely adhered to the layer (SiO 2 ) made of the low refractive index inorganic material and the hard coat layer 6. This is because it is larger than the property (adhesion).
- the adhesion (adhesion) between the high refractive index layer (ZrO 2 ) and the plastic substrate 2 is lower. Since it is larger than the adhesiveness (adhesive force) between the rate layer (SiO 2 ) and the plastic substrate 2, the adhesiveness becomes more advantageous.
- the second layer 10 is provided in contact with the first layer 9 and is made of silicon dioxide (SiO 2 ) having a refractive index of 1.47.
- SiO 2 silicon dioxide
- MgF 2 having a refractive index of 1.36 can be used as the low refractive index inorganic material constituting the second layer 10 in addition to SiO 2 .
- the third layer 11 is provided in contact with the second layer 10 and is made of zirconium dioxide (ZrO 2 ) in the same manner as the first layer 9.
- the third layer 11 can also be formed of a high refractive index inorganic material other than ZrO 2 , similarly to the first layer 9. Further, the high refractive index layer 7 is not formed in the three-layer structure of the first layer 9, the second layer 10, and the third layer 11 as described above. It can also be composed of layers, or four or more layers.
- the low refractive index layer 8 is provided in contact with the third layer 11 and is made of silicon dioxide (SiO 2 ) as in the second layer 10.
- the fluorine-substituted alkyl group-containing organosilicon compound is formed on the inorganic multilayer film 3, that is, on the outermost layer (low refractive index layer 8) of the inorganic multilayer film 3 farthest from the plastic substrate 2.
- a water / oil repellent film 12 is provided.
- the water / oil repellent film 12 is mainly composed of a fluorine-substituted alkyl group-containing organosilicon compound and has liquid repellency (water repellency, oil repellency). That is, this water / oil repellent film 12 reduces the surface energy of the optical component, exhibits functions of preventing water scorching and dirt, and improves the sliding performance of the surface of the optical component. As a result, scratch resistance is improved. Can be improved.
- the fluorine-substituted alkyl group-containing organosilicon compound the following general formula (1):
- Rf represents a linear or branched perfluoroalkyl group having 1 to 16 carbon atoms
- Y represents iodine or hydrogen
- Y ′ represents hydrogen or a lower alkyl group having 1 to 5 carbon atoms.
- Y ′′ represents a fluorine or trifluoromethyl group
- R 1 represents a hydrolyzable group
- R 2 represents hydrogen or an inert monovalent organic group
- a, b, c, d are Each represents an integer of 0 to 200, e represents 0 or 1, s and t each represents an integer of 0 to 2, and w represents an integer of 1 to 10.
- X represents oxygen or a divalent organic group
- X ′ represents a hydrolyzable group
- X ′′ represents a divalent organic silicone group
- R 3 represents carbon.
- q represents an integer of 1 to 3
- m, n and o each represents an integer of 0 to 200
- p represents 1 or 2
- r Represents an integer of 2 to 20
- k represents an integer of 0 to 2
- z represents an integer of 0 to 10 when k is 0 or 1.
- Rf 2 represents a divalent linear perfluoropolyether group
- R 4 represents an alkyl group having 1 to 4 carbon atoms or a phenyl group
- R 5 represents a hydrolyzable group.
- I represents an integer of 0 to 2
- j represents an integer of 1 to 5
- u represents 2 or 3.
- a fluorine-substituted alkyl group-containing organosilicon compound selected from the general formulas (1) to (5) and the general formula (6) The selected fluorine-substituted alkyl group-containing organosilicon compound is preferably used in combination.
- the fluorine-substituted alkyl group-containing organosilicon compound represented by the general formulas (1) to (5) OPTOOL-DSX, OPTOOL-AES4, etc. manufactured by Daikin Industries, Ltd. can be used.
- As the fluorine-substituted alkyl group-containing organosilicon compound represented by the general formula (6) KY-130, KY-164 manufactured by Shin-Etsu Chemical Co., Ltd. can be used.
- FIG. 2 is a side sectional view schematically showing an optical component according to a second embodiment of the present invention, and reference numeral 1 ′ denotes an optical component for a spectacle lens.
- This optical component 1 ′ includes an inorganic multilayer film 3 ′ disposed on the concave surface of the plastic substrate 2 in addition to the structure of the optical component 1 of the first embodiment.
- a functional thin film 4 is disposed between the concave surface of the plastic substrate 2 and the inorganic multilayer film 3 ′.
- This functional thin film 4 is composed of a primer layer 5 and a hard coat layer 6 in this embodiment.
- the inorganic multilayer film 3 ′ has a high refractive index layer 7 ′ having a multilayer structure in which a plurality of high refractive index inorganic materials and low refractive index inorganic materials are alternately stacked on the plastic substrate 2.
- a low refractive index layer 8 ′ made of a low refractive index inorganic material having a lower refractive index than the high refractive index layer 7 ′ is used.
- the high refractive index layer 7 ′ includes a first layer 9 ′ made of a high refractive index inorganic material provided on the plastic substrate 2 side and the first layer, as in the first embodiment.
- Inorganic materials used for the first layer 9 ′, the second layer 10 ′, and the third layer 11 ′ in the present embodiment include the first layer 9, the second layer 10, and the third layer 11 in the first embodiment.
- the thing similar to the inorganic material used is mentioned.
- the high refractive index layer 7 ′ can be composed of two layers or four or more layers without forming it in a three-layer structure like the high refractive index layer 7 in the first embodiment.
- the inorganic multilayer film 3 ′ may be designed so that the average reflectance in the wavelength range of 400 to 500 nm is 2 to 10%, like the inorganic multilayer film 3 of the first embodiment. . Furthermore, the inorganic multilayer film 3 'is preferably designed so that the reflectance is 1.5% or less in the wavelength region of 580 to 780 nm.
- the inorganic multilayer film 3 ′ may be the same as a conventional antireflection film. That is, the inorganic multilayer film 3 'may be an antireflection film having an average reflectance of 1.5% or less in a wavelength range of 380 to 780 nm.
- the average reflectance in the wavelength range of 400 to 500 nm of the inorganic multilayer film 3 disposed on the convex surface of the plastic substrate 2 is the same as that of the inorganic multilayer film disposed on the concave surface of the plastic substrate 2. It may be larger than the average reflectance in the wavelength range of 400 to 500 nm of the film 3 ′.
- the inorganic multilayer film 3 disposed on the convex surface of the plastic substrate 2 has an average reflectance of 5 to 10% in the wavelength range of 400 to 500 nm, and the inorganic multilayer film disposed on the concave surface of the plastic substrate 2.
- the film 3 ′ is preferably designed so that the average reflectance in the wavelength range of 400 to 500 nm is 2 to 4%.
- the inorganic multilayer film 3 'disposed on the concave surface of the plastic substrate 2 may have an average reflectance of 3 to 4% in the wavelength range of 400 to 500 nm.
- the functional thin film 4 is formed including the primer layer 5 and the hard coat layer 6.
- the primer layer 5 and the hard coat layer 6 include Of these, either one or both may be omitted.
- a dielectric film or a metal film made of ITO (Indium Tin Oxide) or the like may be provided in addition to the primer layer 5 and the hard coat layer 6.
- a dielectric film or a metal film having a thickness of 20 nm or less may be disposed between the high refractive index inorganic material and the low refractive index inorganic material constituting the inorganic multilayer film. Note that the thickness of the dielectric film or the metal film may be 10 nm or less.
- an inorganic multilayer film is used as the multilayer film, but an organic multilayer film may be used as long as the effects of the present invention are not impaired.
- the optical component manufacturing method in the present embodiment includes a step of forming a functional thin film 4 (primer layer 5 and hard coat layer 6) on a plastic substrate 2 by a method similar to the conventional method, and heating the plastic substrate 2.
- a predetermined temperature for example, 70 ° C.
- the step of forming the inorganic multilayer film 3 includes a process of alternately stacking a plurality of high refractive index inorganic materials and low refractive index inorganic materials to form a high refractive index layer 7 having a multilayer structure, And forming a low refractive index layer 8 made of a low refractive index inorganic material.
- a vacuum vapor deposition method is preferably used for forming each of these layers.
- FIG. 3 is a diagram illustrating an example of a vapor deposition apparatus 30 for forming each layer of the inorganic multilayer film 3.
- the vapor deposition apparatus 30 includes a first chamber 31, a second chamber 32, and a third chamber 33.
- Each of the first, second, and third chambers 31, 32, and 33 is reduced in pressure to a substantially vacuum and held in that state.
- the vapor deposition apparatus 30 can adjust each internal temperature of the 1st, 2nd, 3rd chamber 31, 32, 33 by the temperature control means which is not shown in figure.
- the vapor deposition apparatus 30 includes a holding member 34 in each internal space of the first, second, and third chambers 31, 32, and 33.
- the holding member 34 has a curved upper surface (holding surface) and is configured to be rotatable, and holds a plurality of plastic substrates 2 on the upper surface.
- the vapor of ZrO 2 is released from the first vapor deposition source 35 ⁇ / b> A, and is supplied onto the plastic substrate 2 held by the holding member 34 for vapor deposition.
- the first layer 9 and the third layer 11 in the high refractive index layer 7 of the inorganic multilayer film 3 can be formed.
- the second vapor deposition source 35B with a beam SiO 2 vapor is released from the second vapor deposition source 35B, and is supplied onto the plastic substrate 2 held by the holding member 34 for vapor deposition.
- the second layer 10 and the low refractive index layer 8 in the high refractive index layer 7 of the inorganic multilayer film 3 can be formed.
- the high refractive index inorganic material is formed on the plastic substrate 2 held by the holding member 34. And layers made of a low refractive index inorganic material can be alternately formed and laminated.
- the inorganic multilayer film 3 is designed so that the average reflectance in the wavelength range of 400 to 500 nm is 2 to 10%. Furthermore, the inorganic multilayer film 3 is preferably designed so that the reflectance is 1.5% or less in the wavelength range of 580 to 780 nm.
- a vapor deposition source made of zirconium oxide (ZrO) is used as the first vapor deposition source 35A, and the first vapor deposition source 35A is irradiated with a beam while introducing oxygen into the internal space of the second chamber 32, and zirconium dioxide (ZrO 2 ). You may make it form the high refractive index inorganic material layer which consists of these.
- a water / oil repellent film 12 is formed thereon.
- a wet method such as a dipping method, a spin coat method and a spray method, or a dry method such as a vacuum deposition method.
- the dipping method is common and is often used.
- the inorganic multilayer film 3 is formed in a solution obtained by dissolving a fluorine-substituted alkyl group-containing organosilicon compound in an organic solvent, the optical component is immersed, pulled up under certain conditions, and dried to form a film.
- the organic solvent perfluorohexane, perfluoro-4-methoxybutane, perfluoro-4-ethoxybutane, metaxylene hexafluoride, or the like is used.
- the dilution concentration with an organic solvent is preferably 0.01 to 0.5% by weight, more preferably 0.03 to 0.1% by weight. If the concentration is too low, the water / oil repellent layer 12 having a sufficient film thickness cannot be obtained, and if the concentration is too high, uneven coating tends to occur and the material cost increases. Of the dry methods, vacuum deposition is often used. This method is a method of forming the water- and oil-repellent film 12 by heating and evaporating the fluorine-substituted alkyl group-containing organosilicon compound in a vacuum chamber.
- the inorganic multilayer film 3 is designed so that the average reflectance in the wavelength range of 400 to 500 nm is 2 to 10%. As for visibility, good performance can be ensured. Moreover, in the manufacturing method of an optical component, such a well-balanced and excellent optical component can be reliably provided.
- Example 1 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After performing Ar ion beam cleaning for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index of 2.00) is sequentially formed from the plastic substrate side with an optical film thickness of 0.035 ⁇ and the second layer SiO 2. (Refractive index 1.47) with an optical film thickness of 0.565 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical film thickness 0.075 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- the optical film thickness is 0.04 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.32 ⁇
- the sixth layer SiO 2 (refractive index 1.47) is the optical film thickness 0.26 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- Concave surface device, processing atmosphere, pre-treatment similar to convex surface, first layer SiO 2 (refractive index 1.47) optical thickness 0.10 ⁇ , second layer ZrO 2 (refractive in order from plastic substrate side)
- the optical film thickness is 0.16 ⁇
- the third layer SiO 2 (refractive index 1.47) is the optical film thickness 0.06 ⁇
- the fourth layer ZrO 2 (refractive index 2.00) is optical.
- the spectral characteristics in Example 1 are shown in FIG.
- Example 2 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After Ar ion beam cleaning was performed for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index 2.00) was sequentially formed with an optical film thickness of 0.07 ⁇ and the second layer SiO 2 from the plastic substrate side. (Refractive index 1.47) with an optical thickness of 0.59 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical thickness of 0.06 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- the optical film thickness is 0.04 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.3 ⁇
- the sixth layer SiO 2 (refractive index 1.47) is the optical film thickness 0.265 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- Concave surface device, processing atmosphere, pre-treatment similar to convex surface, first layer SiO 2 (refractive index 1.47) optical thickness 0.10 ⁇ , second layer ZrO 2 (refractive in order from plastic substrate side)
- the optical film thickness is 0.16 ⁇
- the third layer SiO 2 (refractive index 1.47) is the optical film thickness 0.06 ⁇
- the fourth layer ZrO 2 (refractive index 2.00) is optical.
- the spectral characteristics in Example 2 are shown in FIG.
- Example 3 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After performing Ar ion beam cleaning for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index of 2.00) is sequentially formed from the plastic substrate side with an optical film thickness of 0.095 ⁇ and the second layer SiO 2. (Refractive index 1.47) with an optical thickness of 0.595 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical thickness of 0.05 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- the optical film thickness is 0.03 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.305 ⁇
- the sixth layer SiO 2 (refractive index 1.47) is the optical film thickness 0.275 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- Concave surface device, processing atmosphere, pre-treatment similar to convex surface, first layer SiO 2 (refractive index 1.47) optical thickness 0.10 ⁇ , second layer ZrO 2 (refractive in order from plastic substrate side)
- the optical film thickness is 0.16 ⁇
- the third layer SiO 2 (refractive index 1.47) is the optical film thickness 0.06 ⁇
- the fourth layer ZrO 2 (refractive index 2.00) is optical.
- the spectral characteristics in Example 3 are shown in FIG.
- Table 1 shows the details of each film formation layer in Examples 1 to 3 and Comparative Example 1.
- Example 2 having an average reflectance of about 6% in the wavelength range of 400 to 500 nm was deemed most suitable for each evaluation item.
- Example 2 Film formation was performed under the same film formation conditions as in Example 2 of ⁇ Experiment 1 >>.
- Example 4 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After Ar ion beam cleaning was performed for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index 2.00) was sequentially formed from the plastic substrate side with an optical film thickness of 0.155 ⁇ and the second layer SiO 2. (Refractive index 1.47) with an optical thickness of 0.045 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical thickness of 0.5 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- Lamination was performed with an optical film thickness of 0.335 ⁇ . Laminated. Note that ⁇ is 500 nm as the design center wavelength.
- Concave surface device, processing atmosphere, pre-treatment similar to convex surface, first layer SiO 2 (refractive index 1.47) optical thickness 0.10 ⁇ , second layer ZrO 2 (refractive in order from plastic substrate side) The optical film thickness is 0.16 ⁇ , the third layer SiO 2 (refractive index 1.47) is the optical film thickness 0.06 ⁇ , and the fourth layer ZrO 2 (refractive index 2.00) is optical.
- a film thickness of 0.25 ⁇ and a fifth layer SiO 2 (refractive index of 1.47) were laminated with an optical film thickness of 0.28 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- the spectral characteristics in Example 4 are shown in FIG.
- Table 3 shows details of each film formation layer in Examples 2 and 4 and Comparative Example 1.
- the average reflectance is set to 2 to 10% in the wavelength range of 400 to 500 nm, and further, the reflectance is set to 1.5% or less in the wavelength range of 580 to 780 nm. It was confirmed that the determination was more effective.
- Example 5 Convex surface, concave surface: The lens is set in a rotating dome provided in the vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted until the pressure reaches 1.0 ⁇ 10 ⁇ 3 Pa. After performing Ar ion beam cleaning for 60 seconds under conditions of 500 V and an acceleration current of 100 mA, the first layer ZrO 2 (refractive index 2.00) is sequentially formed from the plastic substrate side with an optical film thickness of 0.10 ⁇ and the second layer. SiO 2 (refractive index 1.47) has an optical film thickness of 0.10 ⁇ , the third layer ZrO 2 (refractive index 2.00) has an optical film thickness of 0.205 ⁇ , and the fourth layer SiO 2 (refractive index 1.47).
- Example 6 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After performing Ar ion beam cleaning for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index of 2.00) is sequentially formed from the plastic substrate side with an optical film thickness of 0.125 ⁇ and the second layer SiO 2. (Refractive index 1.47) with an optical thickness of 0.095 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical thickness of 0.21 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- the optical film thickness is 0.07 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.14 ⁇
- the sixth layer SiO 2 (refractive index 1.47) is the optical film thickness 0.35 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- the first layer ZrO 2 (refractive index 2.00) has an optical film thickness of 0.105 ⁇ and the second layer SiO 2 (refractive The refractive index 1.47) is the optical film thickness 0.095 ⁇
- the third layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.23 ⁇
- the fourth layer SiO 2 (refractive index 1.47) is optical.
- the film thickness was 0.07 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) was laminated with an optical film thickness 0.14 ⁇
- the sixth layer SiO 2 (refractive index 1.47) was laminated with an optical film thickness 0.33 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- FIG. 11 shows the spectral characteristics of the convex surface in Example 6, and
- FIG. 12 shows the spectral characteristics of the concave surface.
- Example 7 Convex surface: A lens is set in a rotating dome provided in a vacuum chamber, the temperature in the vacuum chamber is heated to 70 degrees, and the pressure is exhausted to 1.0 ⁇ 10 ⁇ 3 Pa, an acceleration voltage of 500 V, After performing Ar ion beam cleaning for 60 seconds under the condition of an acceleration current of 100 mA, the first layer ZrO 2 (refractive index of 2.00) is sequentially formed from the plastic substrate side with an optical film thickness of 0.135 ⁇ and the second layer SiO 2. (Refractive index 1.47) with an optical thickness of 0.085 ⁇ , third layer ZrO 2 (refractive index 2.00) with an optical thickness of 0.20 ⁇ , and fourth layer SiO 2 (refractive index 1.47).
- the optical film thickness is 0.055 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) is the optical film thickness 0.19 ⁇
- the sixth layer SiO 2 (refractive index 1.47) is the optical film thickness 0.35 ⁇ .
- ⁇ is 500 nm as the design center wavelength.
- Concave surface device, processing atmosphere, pre-treatment similar to convex surface, first layer ZrO 2 (refractive index 2.00) with optical film thickness of 0.11 ⁇ and second layer SiO 2 (refractive in order from the plastic substrate side)
- the optical thickness is 0.09 ⁇
- the third layer ZrO 2 (refractive index 2.00) is optical thickness 0.22 ⁇
- the fourth layer SiO 2 (refractive index 1.47) is optical.
- the film thickness was 0.06 ⁇
- the fifth layer ZrO 2 (refractive index 2.00) was laminated with an optical film thickness of 0.20 ⁇
- ⁇ is 500 nm as the design center wavelength.
- FIG. 13 shows the spectral characteristics of the convex surface in Example 7, and
- FIG. 14 shows the spectral characteristics of the concave surface.
- Table 5 shows details of each film formation layer in Examples 5 to 7.
- the average reflectance of the convex surface is 5 to 10% and the average reflectance of the concave surface is 2 to 4% in the wavelength region of 400 to 500 nm, and the reflectance in the wavelength region of 580 to 780 nm. It was confirmed that by setting the ratio to 1.5% or less, it is particularly effective in reducing glare.
Abstract
Description
本願は、2010年9月29日に、日本に出願された特願2010-218711号及び2010年12月24日に、日本に出願された特願2010-288319号に基づき優先権を主張し、その内容をここに援用する。
また、目の健康に対して、可視光線の青色領域(380~500nm)はエネルギーが強いため、網膜などの損傷の原因になると言われている。青色光による損傷を「ブルーライトハザード」といい、特に435~440nm近辺が最も危険であり、この領域の光をカットすることが望ましいと言われている。
また、本発明に係る態様における光学部品の製造方法によれば、眩しさが低減され、見え易く、疲労、眼病予防にも効果的な光学特性を有した光学部品を提供することが可能となる。
なお、この形態は、発明の趣旨をより良く理解させるために具体的に説明するものであり、特に指定のない限り、本発明を限定するものではない。
図1は、本発明に係る第一の実施形態の光学部品を模式的に示す側断面図であり、符号1は眼鏡レンズ用の光学部品である。
この光学部品1は、プラスチック基材2と、プラスチック基材2の凸面上に配設された無機多層膜3とを備えて構成されている。プラスチック基材2の凸面と無機多層膜3との間には、本実施形態では機能性薄膜4が配設されている。この機能性薄膜4は、本実施形態ではプライマー層5とハードコート層6とからなっている。
また、プラスチック基材2は透光性を有していれば透明でなくてもよく、着色されていてもよい。着色されたプラスチック基材2の透過率は、5~85%であることが好ましい。
プライマー層5は、プラスチック基材2とハードコート層6との密着性を良好にするためのもので、密着層として機能するようになっている。また、光学部品1に対する衝撃を吸収するためのものでもあり、衝撃吸収層としても機能するようになっている。
ハードコート層6は、例えばオルガノシロキサン系ハードコート層からなっている。オルガノシロキサン系ハードコート層は、オルガノシロキサン系樹脂に無機酸化物の微粒子を分散させたものである。無機酸化物としては、例えばルチル型の酸化チタンや、ケイ素、錫、ジルコニウム、及びアンチモンの酸化物が好適に用いられる。また、ハードコート層6として、例えば特公平4-55615号公報に開示されているような、コロイド状シリカ含有の有機ケイ素系樹脂であってもよい。ハードコート層6の厚み(実際の厚み)については、2μm以上4μm以下程度とするのが好ましい。
また、本実施形態において、無機多層膜を構成する高屈折率無機材料と低屈折率無機材料との間に、厚さ20nm以下の誘電体膜又は金属膜を配設してもよい。なお、誘電体膜又は金属膜の厚さは、10nm以下であってもよい。
かかる平均反射率の範囲にあれば、眼鏡レンズとして使用した場合、充分な防眩効果が得られ、かつ良好な視認性を維持することができる。該波長域における平均反射率を10%以上にした場合、かかる眼鏡をかけた者は、眼鏡レンズの特に凹面からの入射光による反射にわずらわしさを感じるようになる。前記平均反射率は3~10%であることが好ましい。
また、本実施形態においては、多層膜として無機多層膜を用いているが、本発明の効果を損なわない限り、有機多層膜を用いてもよい。
また、高屈折率層7については、前記したように第1層9、第2層10、第3層11の三層構造で形成することなく、上述した反射率についての条件を満たせば、二層、あるいは四層以上で構成することもできる。
この撥水撥油膜12は、フッ素置換アルキル基含有有機ケイ素化合物を主成分とするもので、撥液性(撥水性、撥油性)を有するものである。すなわち、この撥水撥油膜12は、光学部品の表面エネルギーを低下させ、水やけ防止、汚れ防止の機能を発揮するとともに、光学部品表面のすべり性能を向上させ、その結果として、耐擦傷性を向上させることができる。
フッ素置換アルキル基含有有機ケイ素化合物としては、下記一般式(1):
及び下記一般式(2)~(5):
及び下記一般式(6):
の中から選択される。
一般式(1)~(5)で示されるフッ素置換アルキル基含有有機ケイ素化合物としては、ダイキン工業株式会社製オプツール-DSX、オプツール-AES4などを用いることができる。また、一般式(6)示されるフッ素置換アルキル基含有有機ケイ素化合物としては、信越化学工業株式会社製KY-130、KY-164などを用いることができる。
図2は、本発明に係る第二の実施形態の光学部品を模式的に示す側断面図であり、符号1’は眼鏡レンズ用の光学部品である。図2において、図1に示した光学部品1と同じ構成要素には、同一の符号を付して説明を省略する。
この光学部品1’は、第一の実施形態の光学部品1の構造に加えて、プラスチック基材2の凹面上に配設された無機多層膜3’を備えて構成されている。プラスチック基材2の凹面と無機多層膜3’との間には、本実施形態では機能性薄膜4が配設されている。この機能性薄膜4は、本実施形態ではプライマー層5とハードコート層6とからなっている。
本実施形態における第1層9’、 第2層10’、 第3層11’に用いられる無機材料としては、第一の実施形態における第1層9、 第2層10、第3層11に用いられる無機材料と同様のものが挙げられる。
高屈折率層7’については、第一の実施形態における高屈折率層7と同様に、三層構造で形成することなく、二層、あるいは四層以上で構成することもできる。
また、本実施形態において、無機多層膜を構成する高屈折率無機材料と低屈折率無機材料との間に、厚さ20nm以下の誘電体膜又は金属膜を配設してもよい。なお、誘電体膜又は金属膜の厚さは、10nm以下であってもよい。
また、本実施形態においては、多層膜として無機多層膜を用いているが、本発明の効果を損なわない限り、有機多層膜を用いてもよい。
本実施形態における光学部品の製造方法は、プラスチック基材2に対して従来と同様の方法で機能性薄膜4(プライマー層5、ハードコート層6)を形成する工程と、プラスチック基材2を加熱する工程と、加熱によってプラスチック基材2を所定温度(例えば70℃)に調整した後、このプラスチック基材2上に無機多層膜3を形成する工程と、無機多層膜3上に撥水撥油膜12を形成する工程と、を備えてなる。
なお、第1蒸着源35Aとして酸化ジルコニウム(ZrO)からなる蒸着源を用い、第2チャンバ32の内部空間に酸素を導入しながら第1蒸着源35Aにビームを照射し、二酸化ジルコニウム(ZrO2)からなる高屈折率無機材料層を形成するようにしてもよい。
撥水撥油膜12の形成方法としては、ディッピング法、スピンコート法、スプレー法などの湿式法、あるいは真空蒸着法などの乾式法がある。
湿式法の中では、ディッピング法が一般的であり、よく用いられる。この方法は、フッ素置換アルキル基含有有機ケイ素化合物を有機溶剤に溶解した液中に、無機多層膜3まで形成し光学部品を浸漬し、一定条件で引き上げ、乾燥させて成膜する方法である。有機溶剤としては、パーフルオロヘキサン、パーフルオロ-4-メトキシブタン、パーフルオロ-4-エトキシブタン、メタキシレンヘキサフルオライドなどが使用される。
乾式法の中では、真空蒸着法がよく用いられる。この方法は、フッ素置換アルキル基含有有機ケイ素化合物を真空槽内で加熱して蒸発させ、撥水撥油膜12を形成する方法である。
また、光学部品の製造方法にあっては、このようなバランスのとれた優れた光学部品を確実に提供することができる。
ウレタン系合成樹脂基板上に、屈折率1.67のシリコン系ハードコート、及び屈折率1.67のプライマーコートを加熱硬化にて施し、以下に示すように真空蒸着法により成膜した。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.035λ、第2層SiO2(屈折率1.47)を光学的膜厚0.565λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.075λ、第4層SiO2(屈折率1.47)を光学的膜厚0.04λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.32λ、第6層SiO2(屈折率1.47)を光学的膜厚0.26λで積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層SiO2(屈折率1.47)を光学的膜厚0.10λ、第2層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第3層SiO2(屈折率1.47)を光学的膜厚0.06λ、第4層ZrO2(屈折率2.00)を光学的膜厚0.25λ、第5層SiO2(屈折率1.47)を光学的膜厚0.28λで積層した。尚、λは設計の中心波長で500nmとした。
実施例1における分光特性を図4に示す。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.07λ、第2層SiO2(屈折率1.47)を光学的膜厚0.59λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.06λ、第4層SiO2(屈折率1.47)を光学的膜厚0.04λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.3λ、第6層SiO2(屈折率1.47)を光学的膜厚0.265λで積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層SiO2(屈折率1.47)を光学的膜厚0.10λ、第2層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第3層SiO2(屈折率1.47)を光学的膜厚0.06λ、第4層ZrO2(屈折率2.00)を光学的膜厚0.25λ、第5層SiO2(屈折率1.47)を光学的膜厚0.28λで積層した。尚、λは設計の中心波長で500nmとした。
実施例2における分光特性を図5に示す。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.095λ、第2層SiO2(屈折率1.47)を光学的膜厚0.595λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.05λ、第4層SiO2(屈折率1.47)を光学的膜厚0.03λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.305λ、第6層SiO2(屈折率1.47)を光学的膜厚0.275λで積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層SiO2(屈折率1.47)を光学的膜厚0.10λ、第2層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第3層SiO2(屈折率1.47)を光学的膜厚0.06λ、第4層ZrO2(屈折率2.00)を光学的膜厚0.25λ、第5層SiO2(屈折率1.47)を光学的膜厚0.28λで積層した。尚、λは設計の中心波長で500nmとした。
実施例3における分光特性を図6に示す。
凸面、凹面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層SiO2(屈折率1.47)を光学的膜厚0.10λ、第2層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第3層SiO2(屈折率1.47)を光学的膜厚0.06λ、第4層ZrO2(屈折率2.00)を光学的膜厚0.25λ、第5層SiO2(屈折率1.47)を光学的膜厚0.28λで積層した。尚、λは設計の中心波長で500nmとした。
比較例1における分光特性を図7に示す。
(装用評価)
実施例に沿って作製した光学部品を装備した眼鏡を装用し、パソコンによるデスクワーク時に装用し、比較例に沿って作製した光学部品を装備した眼鏡との評価を行った。評価時の条件及び、判定項目は以下の通りである。
モニタ人数 :10名
ディスプレイ:17インチ液晶ディスプレイ
作業時間 :1時間/日
装用期間 :1週間
判定項目 :1.眩しさ 2.表示文字等の見え易さ 3.疲労感
実施例1~3、比較例1の内、各評価項目に最も適していたものを○と評価した。結果を表2に示す。
実施例1~3、比較例1の内、実施例2が、各評価項目に最も適していたと評価した人数
1.眩しさ :4/10名
2.表示の見え易さ :5/10名
3.疲労感 :6/10名
合成樹脂基板上に、屈折率1.67のシリコン系ハードコートを加熱硬化にて施し、以下に示すように真空蒸着法により成膜した。
≪実験1≫の実施例2と同様の成膜条件にて成膜を行った。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.155λ、第2層SiO2(屈折率1.47)を光学的膜厚0.045λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.5λ、第4層SiO2(屈折率1.47)を光学的膜厚0.335λで積層した。積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層SiO2(屈折率1.47)を光学的膜厚0.10λ、第2層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第3層SiO2(屈折率1.47)を光学的膜厚0.06λ、第4層ZrO2(屈折率2.00)を光学的膜厚0.25λ、第5層SiO2(屈折率1.47)を光学的膜厚0.28λで積層した。尚、λは設計の中心波長で500nmとした。
実施例4における分光特性を図8に示す。
≪実験1≫の比較例1と同様の成膜条件にて成膜を行った。
(装用評価)
実施例に沿って作製した光学部品を装備した眼鏡を装用し、パソコンによるデスクワーク時に装用し、比較例に沿って作製した光学部品を装備した眼鏡との評価を行った。評価時の条件及び、判定項目は以下の通りである。
モニタ人数 :20名
ディスプレイ:17インチ液晶ディスプレイ
作業時間 :1時間/日
装用期間 :1週間
判定項目 :1.眩しさ 2.表示文字等の見え易さ 3.疲労感
実施例2、4、比較例1の内、各評価項目に最も適していたものを○と評価した。○と評価したモニタ人数の合計を表4及び図9に示す。
ウレタン系合成樹脂基板上に、屈折率1.67のシリコン系ハードコート、及び屈折率1.67のプライマーコートを加熱硬化にて施し、以下に示すように真空蒸着法により成膜した。
凸面、凹面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.10λ、第2層SiO2(屈折率1.47)を光学的膜厚0.10λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.205λ、第4層SiO2(屈折率1.47)を光学的膜厚0.06λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.16λ、第6層SiO2(屈折率1.47)を光学的膜厚0.335λで積層した。尚、λは設計の中心波長で500nmとした。
実施例5における分光特性を図10に示す。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.125λ、第2層SiO2(屈折率1.47)を光学的膜厚0.095λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.21λ、第4層SiO2(屈折率1.47)を光学的膜厚0.07λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.14λ、第6層SiO2(屈折率1.47)を光学的膜厚0.35λで積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.105λ、第2層SiO2(屈折率1.47)を光学的膜厚0.095λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.23λ、第4層SiO2(屈折率1.47)を光学的膜厚0.07λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.14λ、第6層SiO2(屈折率1.47)を光学的膜厚0.33λで積層した。尚、λは設計の中心波長で500nmとした。
実施例6における凸面の分光特性を図11に示し、凹面の分光特性を図12に示す。
凸面:レンズを真空槽内に設けられた回転するドームにセットし、真空槽内の温度を70度に加熱し、圧力が1.0×10-3Paになるまで排気し、加速電圧500V、加速電流100mAの条件でArイオンビームクリーニングを60秒間施した後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.135λ、第2層SiO2(屈折率1.47)を光学的膜厚0.085λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.20λ、第4層SiO2(屈折率1.47)を光学的膜厚0.055λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.19λ、第6層SiO2(屈折率1.47)を光学的膜厚0.35λで積層した。尚、λは設計の中心波長で500nmとした。
凹面:凸面と同様の装置、加工雰囲気、前処理後、プラスチック基材側から順次、第1層ZrO2(屈折率2.00)を光学的膜厚0.11λ、第2層SiO2(屈折率1.47)を光学的膜厚0.09λ、第3層ZrO2(屈折率2.00)を光学的膜厚0.22λ、第4層SiO2(屈折率1.47)を光学的膜厚0.06λ、第5層ZrO2(屈折率2.00)を光学的膜厚0.20λ、第6層SiO2(屈折率1.47)を光学的膜厚0.33λで積層した。尚、λは設計の中心波長で500nmとした。
実施例7における凸面の分光特性を図13に示し、凹面の分光特性を図14に示す。
(装用評価)
実施例に沿って作製した光学部品を装備した眼鏡を、パソコンによるデスクワーク時に装用し評価を行った。評価時の条件及び、判定項目は以下の通りである。
モニタ人数 :20名
ディスプレイ:17インチ液晶ディスプレイ
作業時間 :1時間/日
装用期間 :2週間
判定項目 :1.眩しさ 2.表示文字等の見え易さ 3.疲労感
実施例5~7の内、各評価項目に最も適していたものを○と評価した。○と評価したモニタ人数の合計を表6及び図15に示す。
Claims (18)
- 凸面及び凹面を有するプラスチック基材と、
前記プラスチック基材の少なくとも前記凸面上に配設された多層膜と、
を備え、
前記多層膜は、400~500nmの波長範囲における平均反射率が2~10%である光学部品。 - 前記多層膜は、580~780nmの波長範囲における反射率が1.5%以下である請求項1に記載の光学部品。
- 前記プラスチック基材の凹面上に380~780nmの波長範囲における平均反射率が1.5%以下の反射防止膜が配設された請求項1又は2に記載の光学部品。
- 前記プラスチック基材の凸面上に配設された多層膜の400~500nmの波長範囲における平均反射率は、前記プラスチック基材の凹面上に配設された多層膜の400~500nmの波長範囲における平均反射率よりも大きい請求項1~3のいずれか一項に記載の光学部品。
- 前記プラスチック基材の凸面上に配設された多層膜は、400~500nmの波長範囲における平均反射率が5~10%であり、前記プラスチック基材の凹面上に配設された多層膜は、400~500nmの波長範囲における平均反射率が2~4%である請求項4に記載の光学部品。
- 前記プラスチック基材は、着色され、その透過率が5~85%である請求項1~5のいずれか一項に記載の光学部品。
- 前記プラスチック基材から最も遠い前記多層膜の最外層の上に、フッ素置換アルキル基含有有機ケイ素化合物を含む撥水撥油膜を更に備える請求項1~6のいずれか一項に記載の光学部品。
- 前記フッ素置換アルキル基含有有機ケイ素化合物は、下記一般式(1):
及び下記一般式(2)~(5):
及び下記一般式(6):
の中から選択される1種類以上のフッ素置換アルキル基含有有機ケイ素化合物である請求項7に記載の光学部品。 - 前記多層膜は、4層以上の多層膜である請求項1~8のいずれか一項に記載の光学部品。
- 前記プラスチック基材と前記多層膜との間に、機能性薄膜を備えた請求項1~9のいずれか一項に記載の光学部品。
- 前記多層膜を構成する高屈折率材料と低屈折率材料との間に、厚さ20nm以下の誘電体膜又は金属膜を備えた請求項1~10のいずれか一項に記載の光学部品。
- 前記高屈折率材料は、二酸化ジルコニウムを含み、前記低屈折率材料は、二酸化珪素を含む請求項1~11のいずれか一項に記載の光学部品。
- 眼鏡レンズ用である請求項1~12のいずれか一項に記載の光学部品。
- 凸面及び凹面を有するプラスチック基材と、前記プラスチック基材の少なくとも前記凸面上に配設された多層膜とを備えた光学部品の製造方法であって、
前記プラスチック基材を加熱する工程と、前記加熱によって前記プラスチック基材を所定温度に調整した後、前記プラスチック基材上に前記多層膜を形成する工程を備え、
前記多層膜を形成する工程は、高屈折率材料と低屈折率材料とを交互に複数積層し多層構造の高屈折率層を形成する処理と、前記高屈折率層上に、この高屈折率層より低い屈折率の低屈折率層を形成する処理と、を有するとともに、
前記多層膜の400~500nmの波長範囲における平均反射率を2~10%にする請求項1~13のいずれかの一項に記載の光学部品の製造方法。 - 前記多層膜を真空蒸着法を用いて形成する工程を含む請求項14に記載の光学部品の製造方法。
- 前記多層膜を形成する工程は、前記多層膜を構成する層のうちの少なくとも一層を、イオンビームアシストを施しながら成膜を行う工程を含む請求項14又は15に記載の光学部品の製造方法。
- 前記イオンビームアシストは、不活性ガスと、酸素ガス、不活性ガス及び酸素ガスの混合ガスとのうちから選ばれる少なくとも一種のガスを用いて行われる請求項16に記載の光学部品の製造方法。
- 前記不活性ガスはアルゴンである請求項17に記載の光学部品の製造方法。
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EP2624044A4 (en) | 2016-03-30 |
EP2624044A1 (en) | 2013-08-07 |
US10371867B2 (en) | 2019-08-06 |
KR101477940B1 (ko) | 2014-12-30 |
US20130222913A1 (en) | 2013-08-29 |
CA2812742A1 (en) | 2012-04-05 |
CN103282823B (zh) | 2014-12-31 |
EP2624044B1 (en) | 2020-04-22 |
CN103282823A (zh) | 2013-09-04 |
KR20130085415A (ko) | 2013-07-29 |
JP2012093689A (ja) | 2012-05-17 |
CA2812742C (en) | 2017-02-28 |
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