WO2012005147A1 - 光学機器用遮光部材 - Google Patents
光学機器用遮光部材 Download PDFInfo
- Publication number
- WO2012005147A1 WO2012005147A1 PCT/JP2011/064866 JP2011064866W WO2012005147A1 WO 2012005147 A1 WO2012005147 A1 WO 2012005147A1 JP 2011064866 W JP2011064866 W JP 2011064866W WO 2012005147 A1 WO2012005147 A1 WO 2012005147A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- light shielding
- shielding member
- film
- fine particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
Definitions
- the present invention relates to a light-shielding member for optical equipment that can be used for shutters and diaphragm members of various optical equipment.
- the above-described light-shielding film is extremely weak compared to a light-shielding member made of a metal material. Therefore, if the light-shielding film is used as a shutter or a diaphragm member of an optical device, it cannot be used and is in contact with other members. There has been a problem that distortion occurs from the part, and deformation or damage occurs. Such a problem can be said to be a big problem in the recent situation where thinning is required.
- the light shielding member made of a metal material
- deformation easily occurs due to contact with other members. Such deformation does not return to the original due to the nature of the metal material, and such a light shielding member is not convenient.
- Metal materials are more expensive than plastic materials in the first place.
- the inventors of the present invention provide a light shielding member including a binder resin having a hydroxyl value of 100 (mgKOH / g) or more as a binder resin and fine particles having an average particle diameter of less than 1 ⁇ m in the light shielding film.
- the light shielding member for optical equipment of the present invention includes a base material made of a synthetic resin film and a light shielding film formed on at least one surface of the base material, and the light shielding film has a hydroxyl value of 100. It is characterized by containing a binder resin that is (mg KOH / g) or more, carbon black, and fine particles having an average particle diameter of less than 1 ⁇ m.
- the fine particles are preferably inorganic fine particles.
- the inorganic fine particles are preferably calcium carbonate.
- the light shielding film preferably contains silica.
- the light-shielding film contains a binder resin having a hydroxyl value of 100 (mgKOH / g) or more and fine particles having an average particle diameter of less than 1 ⁇ m. It is possible to provide a light shielding member that is less likely to be damaged.
- the light shielding member of the present invention includes a base material made of a synthetic resin film and a light shielding film formed on at least one surface of the base material.
- the light-shielding film contains a binder resin having a hydroxyl value of 100 (mgKOH / g) or more, carbon black, and fine particles having an average particle diameter of less than 1 ⁇ m.
- the average particle diameter as used in the field of this invention refers to the median diameter (D50) measured with a laser diffraction type particle size distribution measuring apparatus (for example, Shimadzu Corporation SALD-7000).
- Base materials made of synthetic resin film include polyester, ABS (acrylonitrile-butadiene-styrene), polyimide, polystyrene, polycarbonate, acrylic, polyolefin, cellulose resin, polysulfone, polyphenylene sulfide, polyethersulfone, polyetheretherketone, etc. Things.
- a polyester film is preferably used, and a stretched polyester film, particularly a biaxially stretched polyester film, is particularly preferable in terms of excellent mechanical strength and dimensional stability.
- a base material a transparent polyester, a foamed polyester film, a black pigment such as carbon black, and a synthetic resin film containing other pigments can be used.
- the above-mentioned base material can be selected appropriately for each application.
- a black pigment such as carbon black
- the contained synthetic resin film can be used, and in other cases, a transparent or foamed synthetic resin film can be used.
- the light shielding film itself provides sufficient light shielding properties as a light shielding member. Therefore, when the synthetic resin film contains a black pigment, the synthetic resin film looks visually black, that is, optical. It may be contained so that the concentration is about 3. Therefore, since the black pigment is not contained in the synthetic resin film until the limit that the physical properties as the base material are impaired as in the prior art, it can be obtained at low cost without changing the physical properties of the synthetic resin film.
- the thickness of the substrate is preferably 4 to 50 ⁇ m, and more preferably 4 to 38 ⁇ m from the viewpoint of reducing the thickness.
- an anchor process or a corona process can also be performed to a base material as needed from a viewpoint of improving adhesiveness with a light shielding film.
- the light-shielding film formed on at least one surface of the substrate contains a binder resin having a hydroxyl value of 100 (mgKOH / g) or more, carbon black, and fine particles having an average particle diameter of less than 1 ⁇ m.
- the particles are small and tend to aggregate with each other. As a result, such fine particles cannot be uniformly dispersed in the binder resin and are present in an uneven manner.
- the light shielding film is formed of such a material, a portion having a low density of fine particles is easily formed in the light shielding film, and a portion that is easily deformed locally is formed in the light shielding film. If the light shielding member provided with the light shielding film is used for a certain period of time, it is considered that bending or distortion occurs from a portion that is easily deformed, so that the stiffness is not necessarily strong.
- fine particles having an average particle diameter of less than 1 ⁇ m are used in a binder resin having a hydroxyl value of 100 (mg KOH / g) or more, the fine particles are locally aggregated due to the influence of the hydroxyl value of the binder resin. Without being dispersed. As a result, the dispersion balance of the fine particles is suitable for the entire light-shielding film, and even when used as a light-shielding member, local deflection and distortion are unlikely to occur, and it can be considered that the stiffness is strong.
- binder resins having a hydroxyl value of 100 (mgKOH / g) or more include poly (meth) acrylic acid resins, polyester resins, polyvinyl acetate resins, polyvinyl chloride, polyvinyl butyral resins, cellulose resins, and polystyrene / polybutadiene resins.
- thermoplastic resins such as urea-based resins and diallyl phthalate-based resins, and thermosetting resins. These can be used alone or in combination.
- the hydroxyl value of the binder resin is 100 (mgKOH / g) or more.
- the hydroxyl value of the binder resin is preferably 125 (mgKOH / g) or more, and more preferably 200 (mgKOH / g) or more, from the viewpoint of further exerting stiffness.
- an upper limit it is preferable to set it as 250 (mgKOH / g) or less from a viewpoint of preventing that a bending stress falls and a coating film becomes weak.
- the content of the binder resin having a hydroxyl value of 100 (mgKOH / g) or more is preferably 15% by weight or more, more preferably 20% by weight or more in the light shielding film.
- the content of the binder resin in the light shielding film is preferably 50% by weight or less, more preferably 45% by weight or less, and still more preferably 40% by weight or less.
- the carbon black contained in the light-shielding film is for coloring the binder resin black to impart light-shielding properties and to impart electrical conductivity to prevent electrostatic charging.
- the average particle size of carbon black is preferably 1 ⁇ m or less, and more preferably 0.5 ⁇ m or less in order to obtain sufficient light shielding properties.
- the content of carbon black is preferably 10 to 50% by weight, more preferably 15 to 45% by weight in the light shielding film.
- the content of the light shielding film is 10% by weight or more, it is possible to prevent the light shielding property and conductivity from being deteriorated, and when the content is 50% by weight or less, the adhesiveness and scratch resistance are improved. It is possible to prevent a decrease in film strength and an increase in cost.
- the light-shielding film is formed with fine irregularities on the surface to reduce the reflection of incident light, lower the surface glossiness (mirror glossiness), and improve the matte properties when used as a light-shielding member.
- inorganic particles may be included. Examples of inorganic particles include silica, magnesium aluminate metasilicate, and titanium oxide. Among these, silica is preferably used from the viewpoints of particle dispersibility, low cost, and the like.
- the average particle diameter of the inorganic particles is preferably 1 ⁇ m to 10 ⁇ m, and more preferably 1 ⁇ m to 6 ⁇ m. By setting it as such a range, a fine unevenness
- the content of the inorganic particles is preferably 0.5 to 10% by weight, more preferably 0.5 to 5% by weight in the light shielding film.
- the content is preferably 0.5 to 10% by weight, more preferably 0.5 to 5% by weight in the light shielding film.
- the content is possible to prevent the inorganic particles from dropping off due to the sliding of the light shielding member, or to prevent the light shielding member itself from being damaged, and to prevent the sliding property from being deteriorated. it can.
- the content of inorganic particles is preferably 5% by weight or less in the light shielding film from the above range.
- the inorganic particles used in the present embodiment can obtain a high matte property even in a small amount. Therefore, by setting the amount to 5% by weight or less, a sufficient matte property can be obtained, and relatively, carbon black can be obtained. Thus, it becomes possible to increase the content of fine particles, which will be described later, and to improve physical properties such as light shielding properties and electrical conductivity without lowering the stiffness.
- the fine particles having an average particle size of less than 1 ⁇ m contained in the light shielding film are used in combination with the binder resin having a hydroxyl value of 100 (mgKOH / g) or more as described above. Therefore, even if it is used as a light shielding member, it is difficult for local deflection and distortion to occur, and it can be strong. Moreover, the hardness of the coating film when it is set as the light shielding film can also be improved. Furthermore, since it is difficult for local deflection and distortion to occur, thermal deformation can hardly occur.
- hydrocarbon lubricants such as polyethylene wax and paraffin wax
- fatty acid lubricants such as stearic acid and 12-hydroxystearic acid
- amide lubricants such as oleic acid amide and erucic acid amide
- stearic acid examples thereof include hydrocarbon lubricants such as polyethylene wax and paraffin wax, fatty acid lubricants such as stearic acid and 12-hydroxystearic acid, amide lubricants such as oleic acid amide and erucic acid amide, and stearic acid.
- Mono-glyceride ester lubricants Mono-glyceride ester lubricants, alcohol lubricants, silicone resin particles, fluororesin particles such as polytetrafluoroethylene wax, acrylic resin particles, cross-linked acrylic resin particles, cross-linked polystyrene resin particles and other resin fine particles, or metal soap , Talc, molybdenum disulfide, calcium carbonate, silica, aluminum hydroxide, zirconium oxide, barium sulfate, titanium oxide, and other inorganic fine particles such as solid lubricants.
- inorganic fine particles it is preferable to use calcium carbonate because it is stronger as a light shielding member. These fine particles can be used alone or in combination of two or more.
- the silica enumerated here is different from the silica contained in order to improve the above-mentioned matting property.
- the content of the fine particles is preferably 2.5 to 40% by weight, more preferably 10 to 35% by weight in the light shielding film.
- the stiffness can be made stronger, and by making it 40% by weight or less, the relative content of carbon black can be increased, while obtaining the stiffness. It can prevent that light-shielding property falls.
- the content of the fine particles with respect to the binder resin is preferably 30 to 200 parts by weight, more preferably 50 to 150 parts by weight with respect to 100 parts by weight of the binder resin.
- a flame retardant an antibacterial agent, a fungicide, an antioxidant, a plasticizer, a leveling agent, a flow regulator, Various additives such as an antifoaming agent and a dispersing agent can be contained.
- the thickness of the light shielding film is preferably 3 ⁇ m to 30 ⁇ m, and more preferably 5 ⁇ m to 20 ⁇ m. By setting the thickness to 3 ⁇ m or more, it is possible to prevent pinholes and the like from being generated in the light shielding film and to obtain sufficient light shielding properties. Moreover, it can prevent that a crack arises in a light shielding film by setting it as 30 micrometers or less.
- the light-shielding member for an optical device includes a binder resin having a hydroxyl value of 100 (mgKOH / g) or more, carbon black, and fine particles having an average particle diameter of less than 1 ⁇ m on one or both surfaces of a substrate.
- a coating solution for a light-shielding film including a dip coat, a roll coat, a bar coat, a die coat, a blade coat, an air knife coat and the like is applied and dried, followed by heating and pressurizing as necessary. Can be obtained.
- the solvent of the coating solution water, an organic solvent, a mixture of water and an organic solvent, or the like can be used.
- the light-shielding member for an optical device includes a specific light-shielding film on at least one surface of the base material, the light-shielding property and the properties of the light-shielding film such as conductivity are maintained. It can be suitably used as a shutter and diaphragm member for optical devices such as high-performance single-lens reflex cameras, compact cameras, video cameras, mobile phones, and projectors.
- the light shielding film of this embodiment contains a binder resin having a hydroxyl value of 100 (mgKOH / g) or more and fine particles having an average particle diameter of less than 1 ⁇ m, the fine particles are uniform in the light shielding film. Therefore, it is possible to provide a light-shielding member that is stiff even if it is thinned and hardly breaks the film. As a result, it is particularly preferably used for shutters, diaphragm members, and the like of camera-equipped mobile phones that have recently been required to be thin. Furthermore, since local deflection and distortion are unlikely to occur, thermal deformation can hardly occur.
- Example 1 A black polyethylene terephthalate film (Lumirror X30: Toray Industries, Inc.) having a thickness of 25 ⁇ m is used as a base material, and a coating solution for a light-shielding film having the following formulation is applied to both surfaces of the base material by a bar coating method, respectively, and the thickness when dried is 10 ⁇ m.
- the light shielding film was formed by coating and drying, and the light shielding member for optical equipment of Example 1 was produced.
- Polyester polyol 9.68 parts (Bernock 11-408: DIC Corporation, hydroxyl value 200 (mgKOH / g), solid content 70%) ⁇ Isocyanate 9.37 parts (Bernock DN980: DIC, solid content 75%) ⁇ 4.57 parts of carbon black (Vulcan XC-72: Cabot) ⁇ Silica 0.89 parts (TS100: Evonik Degussa Japan, average particle size 4 ⁇ m) -Fine particles (calcium carbonate) 7.50 parts (Sunlite SL-700: Takehara Chemical Industries, average particle size 0.74 ⁇ m) ⁇ Methyl ethyl ketone 36.93 parts ⁇ Toluene 15.83 parts
- Example 2 Of the coating solution for light-shielding film used in Example 1, the polyester polyol was changed to polyester polyol (Bernock J-517: DIC, hydroxyl value 140 (mgKOH / g), solid content 70%), and the amount of isocyanate added A light-shielding member for optical equipment of Example 2 was produced in the same manner as Example 1 except that was changed to 6.56 parts by weight.
- Example 3 Of the coating solution for light-shielding film used in Example 1, the polyester polyol was changed to a polyester polyol (Bernock D-144-65BA: DIC, hydroxyl value 100 (mgKOH / g), solid content 65%) and added. Was made in the same manner as in Example 1 except that the amount of isocyanate added was 5.04 parts by weight, and a light-shielding member for optical equipment of Example 3 was produced.
- Example 4 Of the coating solution for the light-shielding film used in Example 1, fine particles (calcium carbonate) were changed to fine particles (titanium oxide, A-100: Ishihara Sangyo Co., Ltd., average particle size 0.15 ⁇ m). Thus, a light shielding member for optical equipment of Example 4 was produced.
- Example 5 Of the coating solution for the light-shielding film used in Example 1, fine particles (calcium carbonate) were changed to fine particles (acrylic particles, Chemisnow MP-1600: Soken Chemical Co., Ltd., average particle size 0.8 ⁇ m), and the same as in Example 1. Thus, a light shielding member for optical equipment of Example 5 was produced.
- Comparative Example 1 Of the coating solution for the light-shielding film used in Example 1, the polyester polyol was changed to an acrylic polyol (Acridic A-801P: DIC, hydroxyl value 50 (mgKOH / g), solid content 50%), and the addition amount was changed.
- a light shielding member for optical equipment of Comparative Example 1 was produced in the same manner as in Example 1 except that the amount was 13.55 parts by weight and the amount of isocyanate added was 3.28 parts by weight.
- Comparative Example 2 Of the coating solution for the light-shielding film used in Example 1, fine particles (calcium carbonate) were changed to particles (barium sulfate, BMH: Sakai Chemical Industry Co., Ltd., average particle size: 2.5 ⁇ m). Thus, a light shielding member for optical equipment of Comparative Example 2 was produced.
- Light-shielding property The light-shielding member for optical equipment obtained in Examples 1 to 5 and Comparative Examples 1 and 2 was optically measured using an optical densitometer (TD-904: Gretag Macbeth) based on JIS K7651: 1988. Concentration was measured. The case where the optical density exceeded 4.0 and became the density of the non-measurable region was indicated as “ ⁇ ”, and the case where it was 4.0 or less was indicated as “X”. Note that a UV filter was used for the measurement. The measurement results are shown in Table 1.
- the measuring unit 3 is a commercially available electronic balance (BX3200D: Shimadzu Corporation) and the upper fixing unit 2 and the gap between the measuring unit 3 and the upper fixing unit is 2 cm.
- a measuring device 10 was prepared.
- the cylindrical examples 1 to 5 having a diameter of about 3.2 cm and the samples 1 of the comparative examples 1 and 2 are placed on the cylindrical side surface.
- the weighing amount of the electronic balance of the measuring unit 3 after 10 seconds due to the elastic force of the sample 1 was measured.
- a light-shielding member for optical equipment was prepared in which the light-shielding films of Examples 1 to 5 and Comparative Examples 1 and 2 were provided on one surface of the substrate. It was cut into 10 cm ⁇ 10 cm in length and width and allowed to stand in an environment at 80 ° C. for 5 minutes, and the curl amount at the end was measured. The case where the total of the four corners of the curl amount was 0 mm or more and less than 30 mm was designated as “ ⁇ ”, and the case where it was 30 mm or more was designated as “X”. The measurement results are shown in Table 1.
- Adhesiveness The adhesiveness between the light-shielding film and the base material of the light-shielding member for optical equipment obtained in the above Experimental Examples 1 to 5 and Comparative Examples 1 and 2 is determined by the cross-cut tape method in JIS 5600-5-6. Based on measurement and evaluation. The case where the surface texture of the cross section was peeled off by 10% or more was indicated as “X”, the case where it was 5% or more and less than 10% was indicated as “ ⁇ ”, and the case where it was less than 5% was indicated as “ ⁇ ”.
- the light shielding member for optical equipment obtained in Examples 1 to 5 includes a base material made of a synthetic resin film and a light shielding film formed on at least one side of the base material. Since the light-shielding film contains a binder resin having a hydroxyl value of 100 (mgKOH / g) or more, carbon black, silica, and fine particles having an average particle diameter of less than 1 ⁇ m, the light-shielding property is obtained. Even if it is made thin, it can be strong, and it is excellent in durability, so that it is difficult to cause breakage of a film or the like.
- the light shielding member for optical devices of Examples 1 and 2 has a hydroxyl value of 125 (mgKOH / g) or more of the binder resin, the strength of the stiffness is particularly high.
- the light shielding member for equipment has a hydroxyl value of the binder resin of 200 (mgKOH / g) or more and uses calcium carbonate as fine particles, so that the stiffness is particularly high and the durability is particularly high. It became.
- the light shielding member for optical equipment of Comparative Example 1 used a binder resin having a hydroxyl value of less than 100 (mgKOH / g), fine particles were not uniformly dispersed in the light shielding film, and the stiffness was weak. Moreover, this also made the durability poor.
- the light shielding member for optical equipment of Comparative Example 2 used particles having an average particle diameter of 1 ⁇ m or more, the fine particles were not uniformly dispersed in the light shielding film, and the stiffness was weak. Moreover, this also made the durability poor.
- the light-shielding film has a binder resin having a hydroxyl value of 100 (mgKOH / g) or more, carbon black, silica, and an average particle diameter of less than 1 ⁇ m. Because it contains fine particles, the dispersion of fine particles is suitable as a whole of the light shielding film, and even when the light shielding film is provided on one side of the substrate as a light shielding member, local deflection and distortion occur. It was difficult to cause thermal deformation.
- the light shielding member for optical equipment obtained in Comparative Example 1 has a high pigment ratio in the light shielding film, and thus hardly undergoes thermal deformation due to the binder resin. However, since the pigment ratio is high and the fine particles are not uniformly dispersed, the adhesion with the substrate is poor.
- the light shielding member for optical equipment obtained in Comparative Example 2 is the same as the light shielding member for optical equipment obtained in Example 1, but has the same pigment ratio in the light shielding film but has an average particle diameter of less than 1 ⁇ m. Therefore, fine particles were not uniformly dispersed in the coating film, resulting in local deflection and distortion, resulting in thermal deformation. Further, the adhesion with the substrate was inferior to that of Example 1.
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Diaphragms For Cameras (AREA)
- Shutters For Cameras (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
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Abstract
Description
本発明の遮光部材は、合成樹脂フィルムからなる基材と、前記基材の少なくとも片面に形成された遮光膜とを含むものである。当該遮光膜は、水酸基価が100(mgKOH/g)以上であるバインダー樹脂、カーボンブラック及び平均粒子径が1μm未満である微粒子を含有する。
[実施例1]
基材として厚み25μmの黒色ポリエチレンテレフタレートフィルム(ルミラーX30:東レ社)を用い、当該基材の両面に下記処方の遮光膜用塗布液をそれぞれバーコート法により、乾燥時の厚みがそれぞれ10μmとなるように塗布・乾燥を行って遮光膜を形成し、実施例1の光学機器用遮光部材を作製した。
・ポリエステルポリオール 9.68部
(バーノック11-408:DIC社、水酸基価200(mgKOH/g)、固形分70%)
・イソシアネート 9.37部
(バーノックDN980:DIC社、固形分75%)
・カーボンブラック 4.57部
(バルカンXC-72:キャボット社)
・シリカ 0.89部
(TS100:エボニック・デグサ・ジャパン社、平均粒子径4μm)
・微粒子(炭酸カルシウム) 7.50部
(サンライトSL-700:竹原化学工業社、平均粒子径0.74μm)
・メチルエチルケトン 36.93部
・トルエン 15.83部
実施例1で用いた遮光膜用塗布液のうち、ポリエステルポリオールをポリエステルポリオール(バーノックJ-517:DIC社、水酸基価140(mgKOH/g)、固形分70%)に変更し、イソシアネートの添加量を6.56重量部とした以外は実施例1と同様にして、実施例2の光学機器用遮光部材を作製した。
実施例1で用いた遮光膜用塗布液のうち、ポリエステルポリオールをポリエステルポリオール(バーノックD-144-65BA:DIC社、水酸基価100(mgKOH/g)、固形分65%)に変更して添加量を10.42重量部とし、さらにイソシアネートの添加量を5.04重量部とした以外は実施例1と同様にして、実施例3の光学機器用遮光部材を作製した。
実施例1で用いた遮光膜用塗布液のうち、微粒子(炭酸カルシウム)を微粒子(酸化チタン、A-100:石原産業社、平均粒子径0.15μm)に変更した以外は実施例1と同様にして、実施例4の光学機器用遮光部材を作製した。
実施例1で用いた遮光膜用塗布液のうち、微粒子(炭酸カルシウム)を微粒子(アクリル粒子、ケミスノーMP-1600:綜研化学社、平均粒子径0.8μm)に変更した以外は実施例1と同様にして、実施例5の光学機器用遮光部材を作製した。
実施例1で用いた遮光膜用塗布液のうち、ポリエステルポリオールをアクリルポリオール(アクリディックA-801P:DIC社、水酸基価50(mgKOH/g)、固形分50%)に変更して添加量を13.55重量部とし、イソシアネートの添加量を3.28重量部とした以外は実施例1と同様にして、比較例1の光学機器用遮光部材を作製した。
実施例1で用いた遮光膜用塗布液のうち、微粒子(炭酸カルシウム)を粒子(硫酸バリウム、BMH:堺化学工業社、平均粒子径2.5μm)に変更した以外は実施例1と同様にして、比較例2の光学機器用遮光部材を作製した。
以上のようにして実施例1~5及び比較例1~2で得られた光学機器用遮光部材について、下記の方法で物性の評価をした。それぞれの結果を表1に示す。
上記実施例1~5及び比較例1~2で得られた光学機器用遮光部材を、JIS K7651:1988に基づき光学濃度計(TD-904:グレタグマクベス社)を用いて光学濃度を測定した。光学濃度が4.0を超え、測定不能領域の濃度となったものを「○」とし、4.0以下であったものを「×」とした。なお、測定はUVフィルターを用いた。測定結果を表1に示す。
実施例1~5及び比較例1~2で得られた光学機器用遮光部材から、幅1.5cm長さ20cmの実施例1~5及び比較例1~2のサンプルを採取し、当該サンプルをそれぞれ長さ方向に2周させて円筒状とし、当該サンプルが三重に重ならないようにしてポリエステルテープ(ニチバン社)にて当該円筒状のサンプルの最表面に存在するサンプル端辺が中心になる位置で幅1.5cm、長さ1.8cm接着し、幅(高さ)1.5cm、直径約3.2cmの円筒状の実施例1~5及び比較例1~2のサンプルを作製した。
実施例1~5及び比較例1~2で得られた光学機器用遮光部材をカメラの絞り部材として用い、2万5千回動作させて当該光学機器用遮光部材の変形或いは破損の有無を目視にて確認した。変形或いは破損がなかったものを「○」とし、変形或いは破損があったものを「×」とした。また、変形或いは破損がなかったものについて、再度2万5千回動作させ、後に目視にて確認した際にも変形或いは破損がなかったものを「◎」とした。測定結果を表1に示す。
基材の一方の面に、上記実施例1~5及び比較例1~2の遮光膜が設けられた光学機器用遮光部材を用意した。縦横10cm×10cmに裁断し、80℃、5分の環境に静置し、端部のカール量を測定した。カール量の四隅の合計が、0mm以上~30mm未満であったものを「○」とし、30mm以上であったものを「×」とした。測定結果を表1に示す。
上記実験例1~5及び比較例1~2で得られた光学機器用遮光部材の遮光膜と基材との接着性を、JIS 5600-5-6における碁盤目テープ法に基づき測定して評価した。碁盤目部分の面績が10%以上剥離したものを「×」、5%以上10%未満のものを「△」、5%未満のものを「○」とした。
2・・・上部固定部
3・・・計測部
10・・・測定装置
Claims (4)
- 合成樹脂フィルムからなる基材と、前記基材の少なくとも片面に形成された遮光膜とを含む光学機器用遮光部材であって、
前記遮光膜は、水酸基価が100(mgKOH/g)以上であるバインダー樹脂、カーボンブラック及び平均粒子径が1μm未満である微粒子を含有することを特徴とする光学機器用遮光部材。 - 請求項1記載の光学機器用遮光部材において、
前記微粒子は、無機微粒子であることを特徴とする光学機器用遮光部材。 - 請求項2記載の光学機器用遮光部材において、
前記微粒子は、炭酸カルシウムであることを特徴とする光学機器用遮光部材。 - 請求項1~3何れか1項記載の光学機器用遮光部材において、
前記遮光膜は、シリカを含むことを特徴とする光学機器用遮光部材。
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| CN2011800340050A CN102985854A (zh) | 2010-07-09 | 2011-06-29 | 光学设备用遮光部件 |
| KR1020127029311A KR20130059341A (ko) | 2010-07-09 | 2011-06-29 | 광학기기용 차광부재 |
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| JP2013194106A (ja) * | 2012-03-19 | 2013-09-30 | Mitsubishi Plastics Inc | ポリエステルフィルム |
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| JP2017014304A (ja) * | 2015-06-26 | 2017-01-19 | 三菱エンジニアリングプラスチックス株式会社 | ポリアセタール樹脂組成物、成形体及びデジタル機器部品 |
| CN116694131A (zh) * | 2023-05-23 | 2023-09-05 | 中山市永鑫电子科技有限公司 | 一种水性改性聚氨酯消光油墨、光学仪器用遮光膜及其制备方法 |
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| JP6593966B2 (ja) * | 2016-06-29 | 2019-10-23 | ソマール株式会社 | 光学装置用遮光部材 |
| KR102232103B1 (ko) * | 2019-09-04 | 2021-03-25 | 현기웅 | 광학 기기용 광 차단 필름 및 이의 제조 방법 |
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| JPWO2012005147A1 (ja) | 2013-09-02 |
| TWI513580B (zh) | 2015-12-21 |
| JP5984667B2 (ja) | 2016-09-06 |
| KR20130059341A (ko) | 2013-06-05 |
| CN102985854A (zh) | 2013-03-20 |
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