WO2008038800A1 - Filtre optique et son procédé de fabrication - Google Patents
Filtre optique et son procédé de fabrication Download PDFInfo
- Publication number
- WO2008038800A1 WO2008038800A1 PCT/JP2007/069089 JP2007069089W WO2008038800A1 WO 2008038800 A1 WO2008038800 A1 WO 2008038800A1 JP 2007069089 W JP2007069089 W JP 2007069089W WO 2008038800 A1 WO2008038800 A1 WO 2008038800A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- optical filter
- resin layer
- carbon
- light
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 105
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 14
- 239000011347 resin Substances 0.000 claims abstract description 129
- 229920005989 resin Polymers 0.000 claims abstract description 129
- 239000000758 substrate Substances 0.000 claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 137
- 239000002041 carbon nanotube Substances 0.000 claims description 97
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 96
- 229910052799 carbon Inorganic materials 0.000 claims description 41
- 238000007639 printing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 239000003575 carbonaceous material Substances 0.000 claims description 10
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims description 6
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 170
- 239000000975 dye Substances 0.000 description 23
- 238000002834 transmittance Methods 0.000 description 17
- 238000003384 imaging method Methods 0.000 description 10
- 230000006866 deterioration Effects 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 230000002238 attenuated effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- -1 Poly Ethylene Terephthalate Polymers 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
- G02B26/023—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light comprising movable attenuating elements, e.g. neutral density filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
- G02B2207/101—Nanooptics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/205—Neutral density filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
Definitions
- the present invention relates to an optical filter using carbon nanotubes and a method for producing the same.
- ND Optical filters such as filters (Neutral Density filters) and IR (InfraRed) force filters that cut infrared wavelengths are used!
- a film having an optical characteristic of absorbing a specific wavelength is formed on a substrate having translucency as disclosed in Patent Document 1. Formed.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2006-178395
- Patent Document 2 Japanese Unexamined Patent Publication No. 2007-187992
- a filter having a characteristic of absorbing a specific wavelength is formed by dispersing a dye or the like in a resin. There is a problem that such dyes are weakly deteriorated by ultraviolet rays and moisture.
- Patent Document 2 shows an optical filter in which a nickel layer is formed on a transparent substrate and a CNT layer is further formed.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide an optical filter having good environmental resistance and a method for manufacturing the same.
- the optical filter according to the first aspect of the present invention is an optical filter that attenuates light of a predetermined wavelength
- the resin layer is formed on one surface of the carbon layer, and light that has passed through the carbon layer is incident on the resin layer.
- the resin layer may be formed on a substrate having translucency.
- the material that absorbs light of the predetermined wavelength may be polyethylene dioxythiophene.
- the carbon-based material may be a carbon nanotube.
- the carbon nanotube may have a diameter of 300 nm or less.
- the carbon nanotubes may be mixed at a ratio of 0.0;! To 20 wt%.
- the second aspect of the present invention focuses on a method for producing an optical filter.
- a method of manufacturing an optical filter comprising:
- the carbon layer is formed on the light incident side of the optical filter so that the light passing through the carbon layer is incident on the resin layer.
- the resin layer may be formed on a transparent substrate.
- the third aspect of the present invention focuses on a method for manufacturing an optical filter.
- a method of manufacturing an optical filter comprising:
- the carbon-one resin layer comprising the carbon layer formed in the carbon layer forming step and the resin layer formed in the resin layer forming step is placed so that the resin layer and the substrate having translucency are in contact with each other. Transfer to a substrate with light,
- the carbon layer is formed on the light incident side of the optical filter so that light that has passed through the carbon layer is incident on the resin layer.
- the fourth aspect of the present invention is a method for manufacturing an optical filter.
- a method of manufacturing an optical filter comprising:
- the carbon layer is formed on the light incident side of the optical filter so that the light passing through the carbon layer is incident on the resin.
- an optical filter having good environmental resistance can be provided by forming a layer in which carbon nanotubes are dispersed as an outermost layer.
- FIG. 1 (a) is a diagram showing a configuration example of an optical filter according to an embodiment of the present invention. (b) is the II sectional view taken on the line shown in (a).
- FIG. 2 is a diagram showing an imaging device equipped with the optical filter according to the embodiment of the present invention.
- FIG. 3 is a diagram showing the light transmittance of a dye (organic conductive material) dispersed in a resin layer.
- FIG. 4 is a diagram showing light transmittance of a CNT layer.
- FIG. 5 is a diagram showing light transmittance when a resin layer and a CNT layer are formed on a transparent film.
- FIG. 6 is a view showing the results of a light resistance test of a fluorescent film.
- FIG. 7 is a view showing a modification of the present invention, in which (a) is a cross-sectional view taken along line (b). (B) is a cross-sectional view along line ⁇ - ⁇ of (a).
- FIG. 8 (a) is a view showing a modification of the present invention, and (b) is a cross-sectional view taken along line IV-IV of (a).
- an ND filter (Neutral Density filter) that reduces only the light intensity at a specific ratio
- the optical filter 10 includes a flat plate 11 and a blade-like flat plate 11 having a predetermined hardness, a rotating pin 12 formed at one end of the flat plate 11, And an operating pin 13 formed at one end of the flat plate 11 and protruding from the surface opposite to the rotating pin 12.
- light Passes through a region (attenuation region 10a) surrounded by a dashed line in the flat plate 11 shown in FIG. 1 (a), and its intensity is attenuated to a predetermined degree.
- the optical filter 10 is installed in the imaging device 20 as shown in FIG.
- the rotation pin 12 is fitted in a hole on the filter support substrate 23 and functions as the rotation center of the optical filter 10.
- the operation pin 13 is formed so as to protrude from the surface opposite to the rotation pin 12.
- the actuating pin 13 is actuated by an actuator (not shown), and the optical filter 10 is pivoted about the pivot pin 12.
- the rotating pin 12 and the actuating pin 13 are formed integrally with the flat plate 11 and are attached to the flat plate 11 with an adhesive or the like, for example.
- the imaging device 20 includes lenses 21a to 21c, a diaphragm 22, an optical filter 10, a filter support substrate 23, an imaging device 24, and a substrate 25.
- the optical filter 10 is installed on the filter support substrate 23 in the imaging device 20.
- the rotation pin 12 of the optical filter 10 is fitted into a hole provided in the filter support substrate 23.
- the operating pin 13 is engaged with an actuator (not shown).
- the actuator drives the operation pin 13 and the optical filter 10 rotates about the rotation pin 12.
- the dimming region 10a of the optical filter blocks or opens the opening 23a of the filter support substrate 23. In this way, the dimming region 10a attenuates light entering from the lens 21a and the aperture 22.
- the rate at which light is attenuated is almost constant in the visible light region, the color of light reaching the image sensor 24 such as CCD (Charge Coupled Devices) and CMO S (Complementary Metal Oxide Semiconductor) installed on the substrate 25 It is hardly affected.
- CCD Charge Coupled Devices
- CMO S Complementary Metal Oxide Semiconductor
- the optical filter 10 includes a transparent substrate 31 constituting a flat plate 11, a resin layer 32, and a CNT (carbon nanotube) layer 33.
- the CNT layer 33 is formed so as to be the outermost layer and the light incident side, and then the resin layer 32 and then the transparent substrate 31 are formed.
- the light passing through the dimming region 10 a enters the CNT layer 33, passes through the resin layer 32, and exits from the transparent substrate 31.
- the CNT layer 33 is formed as the outermost layer, and the light that has passed through the CNT layer 33 is guided to the resin layer 32.
- the intensity of the ultraviolet light in the light incident on the resin layer 32 can be reduced, and deterioration of the dye dispersed in the resin layer 32 can be prevented.
- the dimming region 10a covers the opening 23a and the opening of the diaphragm 22 Attenuate light entering through 22a. Accordingly, the dimming region 10a has the same force as the opening 23a of the filter support substrate 23 and the opening 22a of the diaphragm 22, and a larger area.
- the rate at which the light entering the imaging device 20 is attenuated by passing through the dimming region 10a needs to be substantially constant with respect to the wavelength.
- the dye that is distributed in the resin layer 32 and the CNT that is distributed in the CNT layer 33 are distributed almost uniformly in at least the light attenuation region 10a, so that the rate of attenuation of light is approximately equal to the wavelength. It is possible to make it constant.
- the flat surface 11 is formed in a concavo-convex shape by force-bonn nanotubes dispersed in the CNT layer 33. Therefore, the reflection that occurs on the upper surface of the flat plate 11 is satisfactorily suppressed.
- the transparent substrate 31 constituting the flat plate 11 may be made of, for example, PET (Poly Ethylene Terephthalate) as long as it is optically transparent.
- the transparent substrate 31 has a thickness of about 100 m, for example.
- the resin layer 32 is formed between the transparent substrate 31 and the CNT layer 33.
- a predetermined dye such as an organic conductive material is dispersed in an optically transparent resin such as PET.
- the dye to be dispersed include polyethylene dioxythiophene (PEDT) represented by the following chemical formula.
- PEDT has the optical property of absorbing more light in the long wavelength range than in the short wavelength range. Specifically, as shown in Fig. 3, at 450 nm, the transmittance is about 75%, peaking at 450 nm, the force is increased to 450 nm force, 800 nm, and the transmission skew force is gradually increased from about 75% to about 55%. When it drops to! /, It has the characteristics.
- the transmittance can be lowered by dispersing more PEDT in the resin, and the transmittance can be lowered by increasing the thickness of the resin layer 32.
- the optical characteristics of the resin layer 32 specifically, the light transmittance (absorbance) can be adjusted.
- the resin layer 32 is formed on the transparent substrate 31 by, for example, a printing method or a coating method.
- the CNT layer 33 is made of a resin in which carbon nanotubes (CNTs) are dispersed, and is formed on the upper surface of the resin layer 32 to a thickness of about 0 .;
- the carbon nanotubes dispersed in the CNT layer 33 are made of carbon and each has a hollow cylindrical shape. If the diameter of the CNT is too large, the visible light is scattered and clouded. For example, it is preferable to use carbon nanotubes having a diameter of 10 to 300 nm and a length of 0.;
- the optical filter 10 is required to have a constant rate of light attenuation in the visible light range. The rate at which the optical filter 10 attenuates light is lower as the added amount of carbon nanotubes is higher and lower.
- the attenuation rate of light required for the optical filter 10 can be adjusted by changing the addition rate of the carbon nanotubes.
- the addition ratio of carbon nanotubes to the resin increases, the viscosity of the filter material increases, which eventually causes problems in printing and molding. Therefore, the amount of carbon nanotubes to be added must take into account the light attenuation rate and the printability and moldability.
- carbon nanotubes may be mixed at about 0.0;! To 20% by weight.
- the CNT layer 33 is formed on the resin layer 32 by a printing method, a coating method, or the like.
- the carbon nanotubes constituting the CNT layer 33 have optical characteristics as shown in FIG. As shown in Fig. 4, the light transmittance of the CNT layer mixed in the transparent resin increases with increasing force wavelength, which is about 10% at a wavelength of 350 nm, and about 20% at 800 nm. . Thus, CNTs tend to increase in transmittance as the wavelength increases.
- the light transmittance of the transparent film on which the resin layer 32 and the CNT layer 33 are formed can be obtained by overlapping the resin layer 32 and the CNT layer 33 as shown in FIG.
- the transmittance characteristic that is inclined with respect to the wavelength is compensated, and the transmittance characteristic is almost uniform with respect to the wavelength. It can be seen that
- CNT has a characteristic of easily absorbing light in a short wavelength region. Therefore, by forming the CNT layer 33 on the resin layer 32, light having a short wavelength (such as ultraviolet rays) reaching the resin layer 32 is attenuated. Further, since the CNT layer 33 covers the resin layer 32, the resin layer 32 does not come into contact with moisture or the like. Therefore, the optical filter 10 can prevent deterioration of the resin layer 32 due to ultraviolet rays, moisture, etc., and has good environmental resistance.
- a short wavelength such as ultraviolet rays
- the optical filter 10 forms the CNT layer 33 after forming the resin layer 32 on the transparent substrate 31.
- the ultraviolet rays can be absorbed by the CNT layer 33.
- the resin layer 32 containing a dye that is easily deteriorated by ultraviolet rays can be protected, and deterioration of the optical characteristics of the resin layer 32 can be prevented. Therefore, an optical filter having good environmental resistance can be provided.
- the CNT layer 33 has absorption characteristics in a short wavelength region, specifically, in an ultraviolet region. Therefore, by further forming a layer having an absorption characteristic in the long wavelength region, an optical filter having an absorption characteristic flat with respect to the wavelength can be provided.
- a CNT layer 33 in which carbon nanotubes are dispersed is formed on the surface of the optical filter 10 on the upper surface of the optical filter 10 of the present embodiment.
- the CNT layer 33 is formed on an uneven surface, it is possible to effectively suppress the reflection generated on the surface of the optical filter 10.
- carbon nanotubes have electrical conductivity, it is possible to satisfactorily suppress the generation of static electricity even when rotated in the imaging device 20 shown in FIG.
- Fig. 6 shows the results of a light resistance test with and without a CNT layer coated on a fluorescent orange filter.
- the light transmittance of the fluorescent orange filter was first measured without the CNT layer being coated.
- a filter coated with a CNT layer and a filter not coated were prepared.
- how the light transmittance of each filter changes was measured.
- temperature and humidity conditions are 40 ° C 90% constant temperature and humidity, mercury lamp (peak wavelength 365nm) is used as UV lamp, illuminance is 3. OmW / cm 2 , 24 hours irradiation for 7 days
- the test conditions were as follows.
- the optical filter 10 of the present embodiment forms the CNT layer 33 on the outermost surface layer on which light is incident, attenuates light of a predetermined wavelength by the CNT layer 33, and then transmits the resin layer 32, transparent Guides light to substrate 31.
- the optical filter 10 can prevent the dye dispersed in the resin layer 32 from being deteriorated by an ultraviolet ray or the like.
- the resin layer 32 is covered with the CNT layer 33, the resin layer 32 is protected from moisture and the like.
- a transparent substrate is prepared. Any transparent substrate can be used as long as it is optically transparent.
- PET is used.
- the transparent substrate has an area where a plurality of optical filters 10 can be formed, and has a thickness of, for example, 100 m.
- the dye is dispersed almost uniformly in the resin, and a resin layer is formed on the transparent substrate by a coating method, a printing method, or the like.
- the kind and amount of the dye dispersed in the resin layer are appropriately adjusted according to the characteristics required for the optical filter.
- CNTs formed in advance by a synthesis method such as a vapor phase growth method are mixed in the solder and stirred to disperse uniformly.
- a vinyl resin copolymer of vinylidene fluoride and propylene hexafluoride mixed with methyl ethyl ketone as a solvent is used as the fluorine resin.
- polyester, salted bull, silicone or the like can be used as long as it is optically transparent as well as fluororesin.
- CNTs are easily dispersed in the binder Disperse in ion-exchanged water beforehand so that it can be applied.
- the diameter of the CNT is too large, the visible light is scattered and becomes cloudy.
- CNT should be dispersed about 0.01% to 20% by weight.
- a screen printing plate or a metal mask having an opening corresponding to the shape of the optical filter is formed on the upper surface of the resin layer, and the CNT dispersed in the binder is used by a printing method or a coating method. Print or apply on the resin layer. When printing or application is complete, remove the screen printing plate or metal mask. Subsequently, for example, the CNT layer is formed by baking at about 100 ° C for about 1 hour. The thickness of the CNT layer is about 0.1-100 m.
- the flat plate 11 of the optical filter 10 is completed. Further, the flat plate 11 is cut into the shape of the optical filter 10, and the rotation pin 12 and the operation pin 13 are attached to the optical filter 10 with an adhesive or the like. Thereby, the optical filter 10 is completed.
- the resin layer is formed on the transparent substrate and the CNT layer is formed thereon, so that the optical filter 10 having good environmental resistance can be manufactured. it can.
- a second manufacturing method for forming a CNT layer on a transparent substrate will be described.
- a resin containing CNTs dispersed by a binder is applied or printed on a substrate by a coating method, a printing method, or the like.
- a CNT layer is formed by firing the formed resin layer containing CNTs.
- the CNT layer is formed with a thickness of about 0.;! To 100 m.
- a screen printing plate or a metal mask having an opening corresponding to the shape of the optical filter is formed on the upper surface of the CNT layer, and a resin is printed on the upper surface of the CNT layer by a printing method or a coating method, or Apply.
- the laminate composed of the resin layer and the CNT layer is transferred onto a transparent substrate. At this time, transfer is performed so that the transparent substrate and the resin layer of the laminate are in contact with each other.
- the flat plate 11 of the optical filter 10 is completed. Further, the flat plate 11 is cut into the shape of the optical filter 10, and the rotation pin 12 and the operation pin 13 are attached to the optical filter 10 with an adhesive or the like. Thereby, the optical filter 10 is completed. [0054] Further, a third manufacturing method will be described. First, create a screen printing plate or metal mask with an opening corresponding to the shape of the optical filter on a transparent substrate, and print or apply a resin containing dye on the transparent substrate by a printing method or coating method. To do.
- a resin layer containing CNTs is formed on the surface of the transparent substrate on which the resin containing the dye is printed or the like. Subsequently, for example, the CNT layer is formed by baking at about 100 ° C. for about 1 hour. The CNT layer has a thickness of about 0.;! To 100 m.
- the resin layer 62 is printed periodically, and the transparent substrate 61 and the CNT layer 63 are stacked in layers with the resin layer 62 interposed therebetween. Is completed. Further, the optical filter 10 is cut out, and the rotation pin 12 and the operation pin 13 are attached to the optical filter 10 with an adhesive or the like. Thereby, the optical filter 10 is completed.
- the resin containing CNTs covers the side surfaces of the resin layer if the flat plate 51 is cut in a shape similar to the shape of the resin layer and larger than the resin layer. Actually, it is necessary to secure a region where light enters and cut it out. As a result, the transparent substrate and the resin containing CNT seal the resin containing the dye. Therefore, the resin containing the dye is not exposed to the outside. Then, moisture or the like does not adhere to the resin containing the dye, and the optical filter has good environmental resistance.
- the configuration in which the resin layer 32 in which the dye is dispersed is formed on the transparent substrate 31 is taken as an example.
- the present invention is not limited to this, and a transparent substrate can be omitted as in the optical filter 70 shown in FIGS. 8 (a) and 8 (b).
- the optical filter 70 includes a dimming region 70a, and further includes a flat plate 71, a rotation pin 72, and an operation pin 73.
- the flat plate 71 includes a resin layer 81 in which a dye is dispersed and a CNT layer 82 formed on the resin layer.
- the CNT layer 82 is formed on the resin layer 81, the ultraviolet light reaching the resin layer 81 is attenuated and moisture does not adhere to the resin layer 81. It is environmentally friendly.
- the optical filter is not limited to the one having a flat absorption characteristic with respect to the wavelength, and may be a filter that absorbs only a short wavelength. Even filters that absorb specific wavelengths good. These can be appropriately changed depending on what kind of dye is dispersed in the resin layer.
- the resin layer is composed of one layer.
- the present invention is not limited to this and may be formed in multiple layers.
- the force S described using the configuration in which the optical filter 10 is rotated by operating the operating pin 13 by the actuator with the rotating pin 12 as the rotation center is not limited thereto.
- the optical filter 10 can be appropriately changed depending on the configuration in which the optical filter 10 is driven, such as by rotating the optical filter 10 by providing only the operating pin and rotating the operating pin with an actuator or the like.
- the rotating pin 12 and the operating pin 13 may be on the same plane.
- the optical filter 10 can further include a guide.
- the resin layer 32 and the CNT layer 62 are not necessarily formed on the entire surface of the transparent substrate 31, and it is sufficient that the resin layer 32 and the CNT layer 62 can cover the dimming region 10a. Further, either the resin layer 32 or the CNT layer 62 may be formed on the entire surface, and one of them may be formed in an area covering at least the dimming region 10a.
- the force described by taking as an example the configuration in which the CNT layer 33 is formed on the outermost surface on which light is incident is not limited to this.
- the CNT layer 33 may be formed on the transparent substrate 31, and the resin layer 32 may be further formed on the CNT layer 33.
- the optical filter 10 is arranged so that the CNT layer 33 is on the light incident side, the light passing through the dimming region 10a is incident from the transparent substrate 31 and passes through the CNT layer 33, and the resin layer. Exits from 32. Even with such a configuration, the intensity of the ultraviolet light in the light incident on the resin layer 32 can be reduced, and deterioration of the dye dispersed in the resin layer 32 can be prevented.
- the optical filter of the present invention is useful as a filter used in an optical apparatus such as a digital camera that is exposed to ultraviolet rays or frequently exposed to moisture.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nanotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Biophysics (AREA)
- Astronomy & Astrophysics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optical Elements Other Than Lenses (AREA)
- Optical Filters (AREA)
- Blocking Light For Cameras (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US12/443,308 US20100040865A1 (en) | 2006-09-28 | 2007-09-28 | Optical filter and method for manufacturing same |
CN200780035838.2A CN101523246B (zh) | 2006-09-28 | 2007-09-28 | 光学滤镜及其制造方法 |
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JP2006264554A JP2008083504A (ja) | 2006-09-28 | 2006-09-28 | 光学フィルタ及びその製造方法 |
JP2006-264554 | 2006-09-28 |
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PCT/JP2007/069089 WO2008038800A1 (fr) | 2006-09-28 | 2007-09-28 | Filtre optique et son procédé de fabrication |
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US (1) | US20100040865A1 (ja) |
JP (1) | JP2008083504A (ja) |
CN (1) | CN101523246B (ja) |
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Cited By (1)
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JP2014029531A (ja) * | 2012-07-30 | 2014-02-13 | Schott Ag | 光学フィルタ、その製造及び使用 |
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JP2009258306A (ja) * | 2008-04-15 | 2009-11-05 | Seiko Precision Inc | 光学フィルタ及びその製造方法 |
JP2010197518A (ja) * | 2009-02-24 | 2010-09-09 | Seiko Precision Inc | 光学フィルタ |
CN102915135B (zh) * | 2011-08-04 | 2016-02-24 | 天津富纳源创科技有限公司 | 触摸屏及显示装置 |
US10246561B1 (en) | 2017-09-25 | 2019-04-02 | Eastman Kodak Company | Method of making silver-containing dispersions with nitrogenous bases |
US10370515B2 (en) | 2017-09-25 | 2019-08-06 | Eastman Kodak Company | Silver-containing non-aqueous composition containing cellulosic polymers |
US10444618B2 (en) | 2017-09-25 | 2019-10-15 | Eastman Kodak Company | Method of making silver-containing dispersions |
US10851257B2 (en) | 2017-11-08 | 2020-12-01 | Eastman Kodak Company | Silver and copper nanoparticle composites |
US10472528B2 (en) | 2017-11-08 | 2019-11-12 | Eastman Kodak Company | Method of making silver-containing dispersions |
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US20100040865A1 (en) | 2010-02-18 |
CN101523246A (zh) | 2009-09-02 |
JP2008083504A (ja) | 2008-04-10 |
CN101523246B (zh) | 2011-12-28 |
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