WO2014087927A1 - 光学フィルター - Google Patents
光学フィルター Download PDFInfo
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- WO2014087927A1 WO2014087927A1 PCT/JP2013/082142 JP2013082142W WO2014087927A1 WO 2014087927 A1 WO2014087927 A1 WO 2014087927A1 JP 2013082142 W JP2013082142 W JP 2013082142W WO 2014087927 A1 WO2014087927 A1 WO 2014087927A1
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- WIPO (PCT)
- Prior art keywords
- optical filter
- wavelength
- metal thin
- light
- thin film
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- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 239000010409 thin film Substances 0.000 claims abstract description 70
- 239000010408 film Substances 0.000 claims abstract description 55
- 229910052751 metal Inorganic materials 0.000 claims description 82
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000000701 chemical imaging Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000000411 transmission spectrum Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
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- 239000010931 gold Substances 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
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- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 2
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910001930 tungsten oxide Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/008—Surface plasmon devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/285—Interference filters comprising deposited thin solid films
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/201—Filters in the form of arrays
Definitions
- the present invention relates to an optical filter that selects the wavelength of incident light.
- a hole-type optical filter has been proposed in which openings are periodically arranged in a metal thin film and wavelength selection is performed using surface plasmons.
- the transmittance of a metal thin film having an opening diameter of a size equal to or smaller than the wavelength of light is generally less than 1%, although it depends on the film thickness.
- Non-Patent Documents 1 and 2 disclose that a RGB transmission spectrum is obtained by using a slit-type optical filter using such surface plasmons. Specifically, it is disclosed that transmission spectra having blue, green, and red wavelengths are obtained by using a metal thin film periodically having a sub-wavelength slit structure.
- Non-Patent Document 1 a periodic slit structure is formed with an MIM structure in which a dielectric film is sandwiched between metal thin films, and an optical filter depending on the slit period is realized. And the white light which consists of light of multiple wavelengths is irradiated from the substrate side, and surface plasmon is induced on each metal thin film surface.
- this optical filter has a transmittance of about 60% even at the wavelength with the highest transmittance.
- Non-Patent Document 2 in the same structure as Patent Document 1, the influence of the film thickness of the metal thin film and the dielectric film on the transmitted light is examined. And, it is difficult to control the wavelength and intensity of the transmission wavelength largely depending on the film thickness of the metal thin film and the dielectric film (a change of about several hundreds nm for the wavelength and an enhancement of several tens of% for the intensity) It is shown.
- An object of the present invention is to improve the wavelength selectivity of an optical filter that selects the wavelength of incident light.
- the present invention provides an optical filter for selecting the wavelength of incident light, in which metal thin films and dielectric films are alternately laminated, and a multilayer film having three or more metal thin films,
- An optical filter comprising: an opening that penetrates the multilayer film and is disposed with a period shorter than the wavelength of the incident light.
- the incident light and the surface plasmon of the metal thin film are combined, thereby improving the wavelength selectivity. be able to.
- FIG. 1 is a plan view of an optical filter according to an embodiment of the present invention.
- This optical filter comprises a multilayer film in which metal thin films and dielectric films are alternately stacked on a smooth substrate. Then, light having a wavelength in the visible region or near-infrared region is transmitted through the fine opening that penetrates the multilayer film.
- the surface plasmon of the metal thin film and the incident light are combined when the multilayer film is irradiated with light, There is a function to enhance the transmission of a specific wavelength.
- the “wavelength of light” refers to the wavelength of light incident on the multilayer film when the optical filter is used. Therefore, this wavelength can vary over a wide range, but is generally selected from the visible range (380 to 750 nm) or the infrared range (750 nm to 1.4 ⁇ m).
- the transmittance of the light-transmitting substrate is preferably 80% or more and 90% or more in order to achieve such electrode transmittance. Is more preferable.
- the efficiency ⁇ of the transmitted light out of the light irradiated to the opening is obtained. Since the wave number k is proportional to the reciprocal of the wavelength ⁇ , as a result, this equation means that the light transmission efficiency ⁇ is proportional to the fourth power of (a / ⁇ ). Therefore, it has been considered that the light transmission decreases rapidly as the opening radius a decreases.
- Equation 3 The relationship between the wave number vector of the surface plasmon and the metal thin film having a square lattice periodic structure on the surface is expressed by Equation 3 from the law of conservation of momentum.
- Equation 3 the element shown in Equation 4 is a surface plasmon wave vector
- the element shown in Equation 5 is a component of the wave vector of incident light on the surface of the metal thin film
- the element shown in Equation 6 is a square lattice.
- P is the period of the hole array
- ⁇ is the angle between the incident wave vector and the surface normal of the metal film
- i and j are integers.
- the absolute value of the surface plasmon wave number vector can be obtained by Equation 7 from the dispersion relation of the surface plasmon.
- > ⁇ d incident light having a bulk plasma frequency or less is irradiated to the metal and the doped semiconductor.
- the following equation 8 is obtained.
- Equation 9 is obtained.
- the wavelength showing the maximum of transmission is a function depending on the period P between the openings in addition to the dielectric constant of the metal, the dielectric constant of the substrate or air on the irradiation side, and the like.
- the incident light and the surface plasmon of the metal thin film are combined, and as a result, light having a wavelength below the diffraction limit is transmitted.
- the aperture structure having a period causes the transmission of light having a specific wavelength corresponding to the period.
- 2A to 2C are cross-sectional views in each manufacturing process of the optical filter.
- a fine processing technique such as an optical lithography method, an electron beam lithography method, or a nanoimprint method can be used.
- the opening process of the optical filter according to the embodiment of the invention including a plurality of layers may be opened at a time or may be opened one by one while performing alignment.
- metal thin films 4 and dielectric films 5 are alternately stacked on a substrate 1, and an etching mask layer 6 serving as a mask when the opening 3 is formed by etching is stacked on the uppermost layer.
- an etching mask layer 6 serving as a mask when the opening 3 is formed by etching is stacked on the uppermost layer.
- three metal thin films 4 and two dielectric films 5 are sandwiched between the metal thin films 4. Note that the number of layers of the metal thin film 4 and the dielectric film 5 is not particularly limited as long as the metal thin film 4 includes three or more layers. There may be.
- a pattern is transferred to the etching mask layer 6 by a dry etching method.
- a dry etching method in order to prevent problems such as side etching, it is preferable to perform transfer under highly anisotropic etching conditions. At this time, it is necessary to prevent the etching mask layer 6 from being entirely etched. This is because the remaining etching mask layer 6 is used as a mask for forming the opening 3.
- the multilayer film of the metal thin film 4 and the dielectric film 5 is patterned by etching.
- the etching rate of the etching mask layer 6 is not 0, the etching mask layer 6 is also removed along with the etching of the multilayer film of the metal thin film 4 and the dielectric film 5, and the optical filter 10 having the opening 3 is obtained. It is done.
- the substrate 1 is not particularly limited as long as it is a material that transmits incident light, and may be any of an inorganic material, an organic material, and a mixed material thereof.
- the substrate 1 for example, glass, quartz, Si, a compound semiconductor, or the like can be used. Further, the size and thickness of the substrate 1 are not particularly limited.
- the surface shape of the substrate 1 is not particularly limited, and may be flat or curved.
- the metal thin film 4 or the dielectric film 5 may be laminated after performing an appropriate surface treatment on the substrate 1. .
- the transparent material having high resistance to etching is laminated on the substrate 1 as a stopper layer, the metal thin film 4 or the dielectric film 5 may be laminated.
- the metal constituting the metal thin film 4 can be arbitrarily selected.
- the term “metal” as used herein refers to a metal element that is a single conductor, has a metallic luster, and is solid at room temperature, and alloys thereof.
- the plasma frequency of the material constituting the metal thin film 4 is preferably higher than the frequency of incident light. In addition, it is desirable that light absorption is small in the wavelength region of light to be used. Examples of such a material include aluminum, nickel, cobalt, gold, silver, platinum, copper, indium, rhodium, palladium, and chromium. Among these, aluminum, silver, gold, copper, indium, nickel, and cobalt And alloys thereof are preferred. However, these are not limited as long as the metal has a plasma frequency higher than the frequency of incident light. Further, the metal thin film 4 may be sintered by heat treatment, or a protective film or the like may be formed.
- the thickness of the metal thin film 4 is preferably 5 nm to 100 nm.
- the dielectric film 5 is preferably a high dielectric material, that is, a high refractive material, from the resonance relationship between incident light and surface plasmon described later.
- a high dielectric material that is, a high refractive material, from the resonance relationship between incident light and surface plasmon described later.
- examples of such materials include titanium oxide, copper oxide, silicon nitride, iron oxide, tungsten oxide, ZeSe, and the like.
- the etching mask layer 6 can be made of a material that transmits incident light and has high resistance to etching.
- the material of the etching mask layer 6 is not particularly limited, and may be any of inorganic materials, organic materials, and mixed materials thereof.
- the etching selectivity between the material of the etching mask layer 6 and the material of the metal thin film 4 and the dielectric film 5 (metal
- the ratio of the etching rate of the etching mask layer 6 to the etching rate of the thin film 4 and the dielectric film 5, that is, the value obtained by dividing the etching rate of the etching mask layer 6 by the etching rate of the metal thin film 4 and the dielectric film 5 is E 01 .
- SiN, Al 2 O 3 or the like can be used.
- the uppermost dielectric film 5 may be formed thickly instead of the etching mask layer 6 and may serve as a mask during etching.
- the formation method of the metal thin film 4, the dielectric film 5, and the etching mask layer 6 is not particularly limited, and for example, a sputtering method, a vapor deposition method, a plasma CVD method, or the like can be used.
- the openings 3 are arranged with a period shorter than the wavelength of the incident light.
- the period in which the opening 3 is disposed is preferably 100 nm or more and 1000 nm or less.
- the shape of the opening 3 is not particularly limited.
- the opening 3 may be filled with a substance such as a dielectric. At this time, it is preferable that the substance filled in the opening 3 is one that transmits incident light.
- incident light of a predetermined wavelength induces surface plasmons on the surface of the metal thin film 4, and the surface plasmons and the incident light interact in a resonant manner, so that wavelength selection and enhancement of transmitted light can be achieved.
- the opening 3 is arranged.
- a nanoimprint stamper is used in order to form a pattern in the process of forming a pattern in the etching mask layer 6.
- FIG. By using this nanoimprint stamper, a pattern of the opening 3 can be formed by forming a mask pattern on the etching mask layer 6 and performing dry etching through the mask.
- FIG. 3A shows a longitudinal sectional view of the optical filter
- FIG. 3B shows a plan view.
- the produced optical filter 20 is formed by alternately laminating a metal thin film 4 made of Al having a thickness of 40 nm and a dielectric film 5 made of TiO 2 having a thickness of 100 nm on a substrate 1 made of glass. Formed. Two metal thin films 4 are formed and two dielectric films 5 are sandwiched between the metal thin films 4. This layer structure is called a MIMIM structure.
- the average opening width of the slits 7 is 245 nm, and the period in which the slits 7 are arranged is 270 nm.
- an optical filter 30 as shown in FIGS. 4A and 4B was produced.
- This optical filter is different from the optical filter 20 of the first embodiment in that two metal thin films 4 and one dielectric film 5 are sandwiched between the metal thin films 4 and other configurations. Is the same as in the first embodiment.
- This layer structure is referred to as an MIM structure.
- FIG. 5 is a graph showing the relationship between the transmission wavelength and the transmittance of the optical filter 20 (MIMIM structure) of the first embodiment and the optical filter 30 (MIM structure) of the comparative example.
- the optical filter of the first embodiment since there are a plurality of MI structures along the direction in which light is incident, the peak of transmission wavelength and the transmittance are almost the same as in the comparative example, and the selectivity of the transmission wavelength. It can be seen that is improved.
- FIG. 6 is a graph showing the relationship between the period of the slit 7 and the peak wavelength of transmitted light in the optical filter 20 of the first embodiment. It can be seen that the peak wavelength of the transmitted light is proportional to the period of the slit 7. Therefore, by adjusting the period of the slit 7, it is possible to design an optical filter that can obtain transmitted light having a desired wavelength.
- the MIMIM structure is an example in which three metal thin films 4 and two dielectric films 5 are alternately stacked.
- the configuration of the present invention is not limited to this, and the metal thin film 4 has four layers. Three layers of the dielectric film 5 may be laminated alternately. That is, the same effect can be obtained as long as the metal thin films 4 and the dielectric films 5 are alternately stacked and the multilayer film has three or more metal thin films 4.
- FIG. 7 is a perspective view of the spectral imaging device 40 and an enlarged view thereof.
- FIG. 7 shows a spectral imaging device 40, a diagram in which a plurality of optical filters 50, which are partially enlarged views thereof, and a schematic diagram in which the surface of the optical filter 50 is enlarged.
- the optical filter 50 has a MIMIM structure in which the metal thin films 4 and the dielectric films 5 are alternately stacked on the substrate 1 and has a cylindrical opening 8.
- FIG. 8 is a partial cross-sectional view of the spectral imaging device 40.
- a light receiving element 42 On the silicon substrate 41, a light receiving element 42, an electrode 43, a light shielding film 44, an optical filter 50, a planarizing layer 45, and a microlens 46 are disposed.
- the optical filter 50 instead of the conventionally provided color filter, it is possible to obtain the spectral imaging device 40 having a different light receiving wavelength for each pixel. In order to make the light reception wavelength different for each pixel, it can be realized by adjusting the period of the opening 8 as in the case of the slit 7 described above.
- the shape of the opening is the slit 7 in the first embodiment, and the cylindrical shape in the second embodiment, but is not limited to these, and is not limited to a conical shape, a triangular pyramid shape, a quadrangular pyramid shape, or any other cylindrical shape. Or a weight shape, or these shapes may be mixed. Further, the effects of the present invention are not lost even when openings of various sizes are mixed. In this way, when the size of the opening is not constant, the diameter of the opening can be displayed as an average value.
- the optical filter 10 is an optical filter 10 for selecting the wavelength of incident light, wherein the metal thin films 4 and the dielectric films 5 are alternately stacked, and a multilayer film having three or more metal thin films 4 is formed. And an opening 3 disposed therethrough with a period less than the wavelength of the incident light.
- the opening 3 as described above in the optical filter 10 including a multilayer film having three or more metal thin films by arranging the opening 3 as described above in the optical filter 10 including a multilayer film having three or more metal thin films, the incident light and the surface plasmon of the metal thin film 4 are combined. Wavelength selectivity can be improved.
- the metal thin film preferably has a thickness of 5 nm to 100 nm. This is because the incident light and the surface plasmon of the metal thin film 4 are combined.
- the period in which the opening 3 is disposed is preferably 100 nm or more and 1000 nm or less. If it is this range, the optical filter 10 which permeate
- the opening 3 can be any one of a cylindrical shape, a conical shape, a triangular pyramid shape, and a quadrangular pyramid shape.
- the opening 3 can be a slit 7.
- the metal thin film 4 includes a material selected from the group including aluminum, silver, platinum, nickel, cobalt, gold, silver, platinum, copper, indium, rhodium, palladium, and chromium. .
- the dielectric film 5 includes a material selected from a high refractive index material group including titanium oxide, copper oxide, silicon nitride, iron oxide, tungsten oxide, and ZeSe. .
- the incident light having a predetermined wavelength induces surface plasmons on the surface of the metal thin film 4, and the surface plasmons and the incident light interact in a resonant manner, so that wavelength selection of transmitted light can be achieved.
- the opening 3 may be arranged so as to be enhanced.
- the wavelength selectivity can be improved.
- the optical filter of the present invention can be used for liquid crystal panels and image sensors.
Abstract
Description
可視領域の波長を透過する多層光透過性金属薄膜を備えた光学フィルターを作製した。図3Aにこの光学フィルターの縦断面図を、図3Bに平面図を示す。作製した光学フィルター20は、ガラスからなる基板1上に、Alからなる膜厚40nmの金属薄膜4と、TiO2からなる膜厚100nmの誘電体膜5とを交互に積層し、開口部としてスリット7を形成した。金属薄膜4が3層、誘電体膜5が金属薄膜4に挟まれる形で2層形成されている。この層構成をMIMIM構造と称する。
可視領域の波長を透過する多層光透過性金属薄膜を備えた光学フィルターを作製し、この光学フィルターを撮像素子の画素上に配設することで、分光器一体型の分光撮像素子を得た。図7は、分光撮像素子40の斜視図とその拡大図である。図7では、分光撮像素子40と、その部分拡大図である複数の光学フィルター50が配設された図と、光学フィルター50の表面を拡大した模式図とを示している。
開口部の形状は、第1実施形態ではスリット7、第2実施形態では円筒形状としたが、これらに限定されることはなく、円錐形状、三角錐形状、四角錐形状、その他任意の筒形状や錘形状、又はこれらの形状が混在していてもよい。また、種々の大きさの開口部が混在していても本発明の効果は失われない。このように開口部の大きさが一定ではない場合、開口部径は平均値で表示することができる。
3、8 開口部
4 金属薄膜
5 誘電体膜
7 スリット
Claims (5)
- 入射光の波長を選択する光学フィルターであって、
金属薄膜と誘電体膜とが交互に積層され、前記金属薄膜を3層以上有する多層膜と、
前記多層膜を貫通し、前記入射光の波長未満の周期で配置された開口部と、を備えたことを特徴とする光学フィルター。 - 前記金属薄膜の膜厚が、5nm以上100nm以下であることを特徴とする請求項1記載の光学フィルター。
- 前記開口部が配置される周期は、100nm以上1000nm以下であることを特徴とする請求項1又は2記載の光学フィルター。
- 前記開口部がスリットであることを特徴とする請求項1~3の何れかに記載の光学フィルター。
- 前記開口部が、円筒形状、円錐形状、三角錐形状、四角錐形状の何れかの形状であることを特徴とする請求項1~4の何れかに記載の光学フィルター。
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JP2014551071A JPWO2014087927A1 (ja) | 2012-12-06 | 2013-11-29 | 光学フィルター |
US14/646,033 US20150301236A1 (en) | 2012-12-06 | 2013-11-29 | Optical filter |
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JP2012-267489 | 2012-12-06 | ||
JP2012267489 | 2012-12-06 |
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WO2014087927A1 true WO2014087927A1 (ja) | 2014-06-12 |
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PCT/JP2013/082142 WO2014087927A1 (ja) | 2012-12-06 | 2013-11-29 | 光学フィルター |
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US (1) | US20150301236A1 (ja) |
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Cited By (4)
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JP2017050254A (ja) * | 2015-09-04 | 2017-03-09 | 国立大学法人北海道大学 | 赤外線ヒーター |
US10128945B2 (en) * | 2013-10-08 | 2018-11-13 | Zte Corporation | MIMO visible light communication system receiving device |
JP2019197834A (ja) * | 2018-05-10 | 2019-11-14 | 浜松ホトニクス株式会社 | 光検出素子 |
JP2021527238A (ja) * | 2018-06-14 | 2021-10-11 | ケンブリッジ エンタープライズ リミテッド | シングルステップリソグラフィカラーフィルタ |
Families Citing this family (4)
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US10050075B2 (en) | 2014-11-21 | 2018-08-14 | Lumilant, Inc. | Multi-layer extraordinary optical transmission filter systems, devices, and methods |
US9749044B1 (en) * | 2016-04-05 | 2017-08-29 | Facebook, Inc. | Luminescent detector for free-space optical communication |
US10620120B2 (en) * | 2016-06-30 | 2020-04-14 | The University Of North Carolina At Greensboro | Nanoplasmonic devices and applications thereof |
US11508767B2 (en) * | 2017-12-22 | 2022-11-22 | Sony Semiconductor Solutions Corporation | Solid-state imaging device and electronic device for enhanced color reproducibility of images |
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JP2004288240A (ja) * | 2003-03-19 | 2004-10-14 | Nec Corp | 光学素子および光ヘッドおよび光記録再生装置 |
JP2010009025A (ja) * | 2008-05-30 | 2010-01-14 | Canon Inc | 光学フィルタ |
WO2011139785A2 (en) * | 2010-04-27 | 2011-11-10 | The Regents Of The University Of Michigan | Display device having plasmonic color filters and photovoltaic capabilities |
JP2012168530A (ja) * | 2011-02-14 | 2012-09-06 | Samsung Electronics Co Ltd | ディスプレイパネル |
US20120287362A1 (en) * | 2009-11-06 | 2012-11-15 | Akinori Hashimura | Plasmonic In-Cell Polarizer |
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- 2013-11-29 US US14/646,033 patent/US20150301236A1/en not_active Abandoned
- 2013-11-29 WO PCT/JP2013/082142 patent/WO2014087927A1/ja active Application Filing
- 2013-11-29 JP JP2014551071A patent/JPWO2014087927A1/ja active Pending
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JP2004288240A (ja) * | 2003-03-19 | 2004-10-14 | Nec Corp | 光学素子および光ヘッドおよび光記録再生装置 |
JP2010009025A (ja) * | 2008-05-30 | 2010-01-14 | Canon Inc | 光学フィルタ |
US20120287362A1 (en) * | 2009-11-06 | 2012-11-15 | Akinori Hashimura | Plasmonic In-Cell Polarizer |
WO2011139785A2 (en) * | 2010-04-27 | 2011-11-10 | The Regents Of The University Of Michigan | Display device having plasmonic color filters and photovoltaic capabilities |
JP2012168530A (ja) * | 2011-02-14 | 2012-09-06 | Samsung Electronics Co Ltd | ディスプレイパネル |
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Publication number | Priority date | Publication date | Assignee | Title |
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US10128945B2 (en) * | 2013-10-08 | 2018-11-13 | Zte Corporation | MIMO visible light communication system receiving device |
JP2017050254A (ja) * | 2015-09-04 | 2017-03-09 | 国立大学法人北海道大学 | 赤外線ヒーター |
JP2019197834A (ja) * | 2018-05-10 | 2019-11-14 | 浜松ホトニクス株式会社 | 光検出素子 |
JP2021527238A (ja) * | 2018-06-14 | 2021-10-11 | ケンブリッジ エンタープライズ リミテッド | シングルステップリソグラフィカラーフィルタ |
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US20150301236A1 (en) | 2015-10-22 |
JPWO2014087927A1 (ja) | 2017-01-05 |
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