WO2006016555A1 - 光学機器用遮光部材 - Google Patents

光学機器用遮光部材 Download PDF

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Publication number
WO2006016555A1
WO2006016555A1 PCT/JP2005/014517 JP2005014517W WO2006016555A1 WO 2006016555 A1 WO2006016555 A1 WO 2006016555A1 JP 2005014517 W JP2005014517 W JP 2005014517W WO 2006016555 A1 WO2006016555 A1 WO 2006016555A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
fine particles
light shielding
film
shielding film
Prior art date
Application number
PCT/JP2005/014517
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Takaaki Kato
Original Assignee
Kimoto Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kimoto Co., Ltd. filed Critical Kimoto Co., Ltd.
Priority to KR1020077005198A priority Critical patent/KR101145947B1/ko
Priority to JP2006531624A priority patent/JP4386919B2/ja
Publication of WO2006016555A1 publication Critical patent/WO2006016555A1/ja

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms

Definitions

  • the present invention relates to a light shielding member suitably used as a shutter and a diaphragm member of an optical device such as a high-performance single-lens reflex camera, a compact camera, a video camera, a mobile phone, and a projector.
  • an optical device such as a high-performance single-lens reflex camera, a compact camera, a video camera, a mobile phone, and a projector.
  • Patent Document 1 Japanese Patent Laid-Open No. 9274218
  • the light-shielding member for optical equipment of the present invention comprises a base material such as a synthetic resin film cover and a light-shielding film formed on at least one surface of the base material.
  • the light-shielding film comprises a binder resin, a car Bon black, a particulate lubricant, and fine particles having an oil absorption of 250 (gZlOOg) or more are contained.
  • the light shielding member for optical equipment of the present invention is characterized in that the content of the fine particles in the light shielding film is 3% by weight or less in the light shielding film.
  • the light shielding member for optical equipment of the present invention is characterized in that an average particle diameter of the lubricant is larger than an average particle diameter of the fine particles.
  • the present invention by incorporating specific fine particles, that is, fine particles having an oil absorption of 250 (gZlOOg) or more into the light-shielding film, erasability can be obtained in a small amount, so that the carbon black in the light-shielding film is obtained.
  • a light shielding member for an optical instrument that has the properties of the light shielding film such as light shielding properties and slidability while having erasability can be obtained. Therefore, such a light-shielding member for optical equipment can be suitably used for high-performance single-lens reflex cameras, compact cameras, video cameras, mobile phones, projectors, and the like.
  • the average particle size of the lubricant is larger than the average particle size of the fine particles!
  • the light shielding member 1 for an optical apparatus of the present invention comprises a base material 2 having a synthetic resin film force and a light shielding film 3 formed on at least one side. It comprises fat and carbon black 31, particulate lubricant 32, and fine particles 33 having an oil absorption of 250 (g / 100 g) or more.
  • the base material used as the light-shielding member for optical equipment of the present invention includes a synthetic resin film such as a polyester film, a polyimide film, a polystyrene film, and a polycarbonate film.
  • a polyester film is suitably used, and a stretched polyester film, particularly a biaxially stretched polyester film, is particularly preferred because of its excellent mechanical strength and dimensional stability.
  • the base material may be a transparent polyester film, a foamed polyester film, a black pigment such as carbon black, or a synthetic resin film containing another pigment. In this case, the above-mentioned base material can be selected appropriately for each application.
  • the light collected by the lens or the like is reflected on the synthetic resin film portion of the member cross section and adversely affects the carbon.
  • a synthetic resin film containing black pigment such as black can be used, and in other cases, a transparent or foamed synthetic resin film can be used.
  • the synthetic resin film itself provides sufficient light shielding properties as a light shielding member
  • the synthetic resin film contains a black pigment
  • the synthetic resin film is visually blackened. It should be contained so that it can be seen, that is, the optical density is about 3. Therefore, the black pigment is not included in the synthetic resin film to the limit where the physical properties as the base material are impaired as in the prior art. Therefore, it can be obtained at low cost without changing the physical properties of the synthetic resin film. it can.
  • the thickness of the substrate is preferably 25 ⁇ m to 250 ⁇ m from the viewpoints of lightness, strength and rigidity as a light shielding member, etc.
  • the base material can be subjected to anchor treatment or corona treatment as necessary.
  • the light-shielding film formed on at least one surface of the base material used as the light-shielding member for an optical device of the present invention is Noinder resin, carbon black, particulate lubricant, oil absorption 250 (g / 100g ) It contains the above fine particles.
  • the binder resin contained in the light-shielding film includes poly (meth) acrylic acid resin, polyester resin, polyacetate resin, polychlorinated butyl, polybutypetital resin, cell outlet Polyurethane resin, polystyrene Z polybutadiene resin, polyurethane resin, alkyd resin, acrylic resin, unsaturated polyester resin, epoxy ester resin, epoxy resin, epoxy talylate resin, urethane acrylate resin , Polyester acrylate resin These include thermoplastic resins such as polyether acrylate resins, phenolic resins, melamine resins, urea resins, diallyl phthalate resins, and thermosetting resins. Alternatively, two or more types can be mixed and used.
  • the content of the binder resin is preferably 55% to 75% by weight, preferably 50% to 80% by weight in the light-shielding film.
  • the content is preferably 55% to 75% by weight, preferably 50% to 80% by weight in the light-shielding film.
  • 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, more preferably 0.5 m or less, in order to obtain sufficient light-shielding properties.
  • the content of carbon black is more preferably 10 wt% to 20 wt%, preferably 5 wt% to 20 wt% in the light shielding film.
  • the content is more preferably 10 wt% to 20 wt%, preferably 5 wt% to 20 wt% in the light shielding film.
  • the particulate lubricant contained in the light-shielding film improves the slidability of the surface of the light-shielding member, reduces the frictional resistance during operation when processed into a diaphragm member, and the like. This is to improve the scratch resistance.
  • both organic and inorganic materials can be used as long as they are solid.
  • hydrocarbon lubricants such as polyethylene wax and normal wax, stearic acid, 12- Fatty acid-based lubricants such as hydroxystearic acid, amide-based lubricants such as oleic acid amide and erucic acid amide, ester-based lubricants such as stearic monoglyceride, alcohol-based lubricants, metal stalagmite, talc, molybdenum disulfide, etc.
  • the average particle size of the lubricant is more preferably 3 m to 20 m, and more preferably 5 m to 10 m. By setting it in such a range, appropriate unevenness is formed on the surface, and the slidability is obtained.
  • the average particle size of the lubricant 32 is larger than the average particle size of the fine particles 33.
  • the average particle size of the lubricant 32 is larger than the average particle size of the fine particles 33.
  • the content of the lubricant is preferably 10 wt% to 20 wt%, more preferably 5 wt% to 20 wt% in the light shielding film.
  • the content of the lubricant is preferably 10 wt% to 20 wt%, more preferably 5 wt% to 20 wt% in the light shielding film.
  • the fine particles contained in the light-shielding film have fine irregularities formed on the surface, thereby reducing the reflection of incident light and lowering the surface glossiness (mirror glossiness). This is to improve the erasability of the material.
  • the fine particles are indispensable for imparting surface erasability when used as a light shielding member.
  • the ratio of the fine particles that can be contained in the light shielding film is limited as follows. First, if the content of fine particles is increased without changing the ratio of rosin and other components, the content of carbon black, lubricant, etc. will decrease accordingly, so that the light shielding properties and sliding properties of the light shielding member will be reduced. Degradation of physical properties such as sex. Also, in order to maintain physical properties such as light-shielding properties, the content of carbon black and lubricant in the light-shielding film is maintained, while the content of fine particles is increased by decreasing the content of binder resin.
  • the adhesion between the material and the light-shielding film is lacking, and the scratch resistance deteriorates.
  • the light-shielding film contains fine particles that provide sufficient erasability, physical properties such as light-shielding properties and slidability cannot be maintained, or scratch resistance is poor.
  • the present invention it is different from the fine particles used as a quenching agent in the conventional light shielding member.
  • specific fine particles that is, fine particles having an oil absorption amount of 250 (g / 100 g) or more, preferably fine particles having an oil absorption amount of 300 (g / 100 g) or more, the surface erasability can be obtained in a small amount, and the light shielding film It has become possible to increase the content of carbon black, lubricants, etc. therein.
  • the light-shielding film has an erasable property, and the physical properties such as light-shielding property and slidability by the light-shielding film can be sufficiently exhibited. Fruit is obtained.
  • the oil absorption amount is based on IS0787ZV-1968, and is the amount of oil (g) necessary to wet-mix ama oil into 100 g of fine particles to form a hard paste.
  • any organic type such as crosslinked acrylic beads, inorganic type such as silica, magnesium aluminate, and titanium oxide can be used.
  • silica is preferably used from the viewpoints of fine particle dispersibility and low cost.
  • one or more of these may be used in combination.
  • the average particle diameter of the fine particles is preferably 1 ⁇ m to 6 ⁇ m, more preferably 1 m to 10 m. By setting it as such a range, fine unevenness
  • the content of the fine particles is preferably 1 wt% to 5 wt%, more preferably 1 wt% to 10 wt% in the light shielding film.
  • the content of the fine particles is preferably 1 wt% to 5 wt%, more preferably 1 wt% to 10 wt% in the light shielding film.
  • the content of the fine particles is further set to 3% by weight or less in the light shielding film from the above range.
  • the fine particles used in the present invention can obtain high erasability even in a small amount, sufficient erasability can be obtained by setting the amount to 3% by weight or less, and the strength of the carbon black is relatively low.
  • the content of the lubricant can be increased, and physical properties such as light shielding properties and sliding properties can be improved.
  • the light-shielding film of the present invention does not impair the functions of the present invention! / In the case of a flame retardant, antibacterial agent, anti-fungal agent, antioxidant, plasticizer, leveling agent, flow control agent Various additives such as an antifoaming agent and a dispersing agent can be contained.
  • the thickness of the light shielding film is preferably 5 ⁇ m to 20 ⁇ m, more preferably 5 ⁇ m to 30 ⁇ m. By setting it to 5 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. Further, by setting the thickness to 30 / z m or less, it is possible to prevent the light shielding film from being cracked.
  • the light-shielding member for an optical device of the present invention has a binder resin, carbon black, particulate lubricant, and a specific lubricant as described above on one or both sides of a base material such as a synthetic resin film cover as described above.
  • the light-shielding film coating solution containing fine particles is applied by a conventionally known coating method such as dip coating, roll coating, bar coating, die coating, blade coating, air knife coating, etc., dried, and then heated and pressurized as necessary. It can obtain by doing.
  • a 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 of the present invention has the light-shielding film configured as described above on at least one surface of the base material made of the synthetic resin film as described above.
  • the shutter of optical equipment such as high-performance single-lens reflex cameras, compact cameras, video cameras, mobile phones, projectors, etc., because it retains the properties of the light-shielding film, such as light-shielding properties and sliding properties, while having erasability. It can be suitably used as a diaphragm member.
  • the light-shielding film coating liquids (a) to (h) of the following formulation are dried on each side by the bar coating method.
  • the coatings were each applied to a thickness of 10 m and dried to form light shielding films A to H, and light shielding members for optical devices of Examples 1 and 2 and Comparative Examples 1 to 6 were produced.
  • the content of acrylic polyol and the like in the coating liquids (a) to (h) for the light shielding film of the following formulation ( Part) is shown in Table 1.
  • Table 2 shows the content (%) of acrylic polyol and the like in the formed light shielding films A to H.
  • Fine particles 1 3 Ding 3100: Degussa, oil absorption 39O (g / 100g), average particle size 4m
  • Fine particles Q AZ-200: Tosohichi's silica company, oil absorption 33O (g / 100g), average particle size 2.4 m fine particles R: TK900: Degussa company, oil absorption 9O (g / 100g), average particle size 8 m Fine particles S: Silicia 730: Fuji Silysia Chemical Co., Ltd., oil absorption 95 (g / 100g), average particle size 4 m [0044] [Table 2]
  • the physical properties of the light shielding members for optical devices obtained in Examples 1 and 2 and Comparative Examples 1 to 6 were evaluated by the following methods. The results are shown in Table 3. However, according to the following (1) evaluation of the light-shielding property, the above Examples 1 and 2 and Comparative Examples 1 to 6 were formed on one side of a transparent polyethylene terephthalate film (Lumirror T60: Toray Industries, Inc.) having a thickness of 50 ⁇ m. This was performed using a sample in which the light-shielding films A to H having a thickness of 10 ⁇ m were formed to a thickness of 10 ⁇ m.
  • a transparent polyethylene terephthalate film Limirror T60: Toray Industries, Inc.
  • optical density of the samples of Examples 1 and 2 and Comparative Examples 1 to 6 above was measured using an optical densitometer (TD-904: Darretag Macbeth) based on JIS K7651: 1988, exceeding 4.0.
  • the concentration in the non-measurable region was indicated as “ ⁇ ”, and the concentration below 4.0 was indicated as “X”. Note that a UV filter was used for the measurement.
  • the light-shielding member for optical equipment obtained in Example 2 and Comparative Examples 1 to 6 is based on JIS K7125: l 999 mm, load 200 (g), speed 100 (mmZmin), static friction coefficient s), dynamic friction coefficient k) was measured.
  • the coefficient of static friction s) is 0.3 and below, and “X” is 0.35 and above. If the coefficient of dynamic friction k) is 0.30 or less, The upper one was designated as “X”.
  • “one” is defined as a shading film that has become shaved and cannot be measured.
  • the glossiness (specular glossiness) (%) of the surface of the light shielding member for optical equipment obtained in Example 2 and Comparative Examples 1 to 6 was measured based on JIS Z8741: 1997.
  • the surface resistivity ( ⁇ ) of the light shielding member for optical equipment obtained in Examples 1 and 2 and Comparative Examples 1 to 6 was measured based on JIS K6911: 1995.
  • a surface resistivity of less than 1.0 to 10 5 ⁇ was rated as “ ⁇ ”, a value of 1.0 to 10 5 ⁇ or more and a rating of 1.0 to 10 8 ⁇ as “ ⁇ ”, and a value of 1.0 to 10 8 ⁇ or more as “X”.
  • the light shielding member for optical equipment obtained in Example 2 and Comparative Examples 1 to 6 was measured based on the cross-cut tape method in JIS K5400: l990. “X” indicates that the surface finish of the cross section is 5% or more, and “ ⁇ ” indicates that the surface is less than 5%.
  • Example 1 ⁇ ⁇ O 2.5 O O
  • Example 2 ⁇ ⁇ O 3.0
  • Comparative Example 1 ⁇ ⁇ ⁇ 9.8 OO Comparative Example 2 ⁇ ⁇ O 10.5 ⁇ ⁇ O Comparative Example 3
  • XXX 5. 0 XOO Comparative Example 4
  • XXX 6. 1 X ⁇ ⁇ Comparative Example 5 ⁇ -One 3.
  • the light shielding member for optical equipment obtained in Example 2 has binder resin, carbon black, particulate lubricant and specific fine particles on both sides of the substrate, that is, Since a light-shielding film containing fine particles with an oil absorption of 250 (g / 100g) or more is formed, the erasability can be obtained with a small amount of fine particles. It retains the physical properties of the light-shielding film, such as mobility, and has excellent physical properties as a light-shielding member for optical equipment.
  • the light shielding member for optical equipment obtained in Comparative Examples 1 and 2 is obtained by containing fine particles having a low oil absorption amount in the light shielding film at the same content as that used in Examples 1 and 2. Therefore, it was inferior in erasability compared to the light shielding members for optical devices of Examples 1 and 2.
  • the light shielding member for optical equipment obtained in Comparative Examples 3 and 4 contains a large amount of fine particles having a low oil absorption amount in order to impart erasability to the light shielding film.
  • the content of carbon black and lubricant in the film decreased, and the light shielding property, slidability, and conductivity were inferior to those of the light shielding member for optical equipment of Example 2.
  • the content of the lubricant is low, appropriate irregularities are not formed on the surface, and the content of the carbon black is also low.
  • the fine particles have a purpose of imparting a decoloring property. Although the content was increased, the erasability was inferior to Examples 1 and 2.
  • the light shielding member for optical equipment obtained in Comparative Examples 5 and 6 has binders while maintaining the content of carbon black and lubricant in the light shielding film in order to maintain physical properties such as light shielding properties.
  • the power of reducing the resin content and containing a large amount of fine particles with a low oil absorption amount As a result, the adhesion between the substrate and the light-shielding film was lacking, and the scratch resistance was poor.
  • FIG. 1 is a view showing an embodiment of a light shielding member for optical equipment according to the present invention.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Lens Barrels (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PCT/JP2005/014517 2004-08-10 2005-08-08 光学機器用遮光部材 WO2006016555A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020077005198A KR101145947B1 (ko) 2004-08-10 2005-08-08 광학기기용 차광부재
JP2006531624A JP4386919B2 (ja) 2004-08-10 2005-08-08 光学機器用遮光部材

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-233256 2004-08-10
JP2004233256 2004-08-10

Publications (1)

Publication Number Publication Date
WO2006016555A1 true WO2006016555A1 (ja) 2006-02-16

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PCT/JP2005/014517 WO2006016555A1 (ja) 2004-08-10 2005-08-08 光学機器用遮光部材

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Country Link
JP (2) JP4386919B2 (zh)
KR (1) KR101145947B1 (zh)
CN (1) CN100498381C (zh)
TW (1) TWI382044B (zh)
WO (1) WO2006016555A1 (zh)

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JP2007234767A (ja) * 2006-02-28 2007-09-13 Nichia Chem Ind Ltd つや消し保護部材およびその保護部材を有する発光装置
JP2008114463A (ja) * 2006-11-02 2008-05-22 Somar Corp 遮光フィルム及びその製造方法
WO2008146750A1 (ja) * 2007-05-25 2008-12-04 Hitachi Maxell, Ltd. 光学シート及びその製造方法
JP2011064737A (ja) * 2009-09-15 2011-03-31 Nikon Corp 光学系部品
WO2011052307A1 (ja) * 2009-10-29 2011-05-05 株式会社 きもと 光学機器用遮光部材
JP2011095477A (ja) * 2009-10-29 2011-05-12 Kimoto & Co Ltd 光学機器用遮光部材
JP2011123255A (ja) * 2009-12-10 2011-06-23 Kimoto & Co Ltd 光学機器用遮光部材
JP2012088499A (ja) * 2010-10-19 2012-05-10 Kimoto & Co Ltd 光学機器用遮光部材、およびそれを用いた光学機器の製造方法
EP2573595A1 (en) * 2010-05-20 2013-03-27 Toyobo Co., Ltd. Light-shielding film
JP5984668B2 (ja) * 2010-07-09 2016-09-06 株式会社きもと 光学機器用遮光部材の製造方法
JP2016218284A (ja) * 2015-05-21 2016-12-22 株式会社きもと 遮光部材、黒色樹脂組成物及び黒色樹脂成形品
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WO2018216307A1 (ja) 2017-05-23 2018-11-29 株式会社きもと 積層遮光フィルム、並びに、これを用いた光学機器用遮光リング、レンズユニット及びカメラモジュール
JP2019012163A (ja) * 2017-06-30 2019-01-24 東洋インキＳｃホールディングス株式会社 遮光性フィルム、および遮光性フィルムの製造方法
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CN100498381C (zh) 2009-06-10
JPWO2006016555A1 (ja) 2008-05-01
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