WO2007148513A1 - 透光性セラミック、ならびに光学部品および光学装置 - Google Patents
透光性セラミック、ならびに光学部品および光学装置 Download PDFInfo
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- WO2007148513A1 WO2007148513A1 PCT/JP2007/060863 JP2007060863W WO2007148513A1 WO 2007148513 A1 WO2007148513 A1 WO 2007148513A1 JP 2007060863 W JP2007060863 W JP 2007060863W WO 2007148513 A1 WO2007148513 A1 WO 2007148513A1
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- Prior art keywords
- optical
- translucent ceramic
- lens
- present
- abbe number
- Prior art date
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- 230000003287 optical effect Effects 0.000 title claims abstract description 69
- 239000000919 ceramic Substances 0.000 title claims abstract description 65
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- 238000002834 transmittance Methods 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract description 6
- 230000011514 reflex Effects 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 14
- 239000000843 powder Substances 0.000 description 14
- 238000010304 firing Methods 0.000 description 13
- 239000002994 raw material Substances 0.000 description 13
- 238000006467 substitution reaction Methods 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010344 co-firing Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000005499 meniscus Effects 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000002223 garnet Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
- C01F17/32—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO
- C01F17/34—Aluminates, e.g. YAlO3 or Y3-xGdxAl5O12
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G15/00—Compounds of gallium, indium or thallium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G15/00—Compounds of gallium, indium or thallium
- C01G15/006—Compounds containing, besides gallium, indium, or thallium, two or more other elements, with the exception of oxygen or hydrogen
-
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3286—Gallium oxides, gallates, indium oxides, indates, thallium oxides, thallates or oxide forming salts thereof, e.g. zinc gallate
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- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
- C04B2235/6585—Oxygen containing atmosphere, e.g. with changing oxygen pressures at an oxygen percentage above that of air
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6587—Influencing the atmosphere by vaporising a solid material, e.g. by using a burying of sacrificial powder
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/76—Crystal structural characteristics, e.g. symmetry
- C04B2235/762—Cubic symmetry, e.g. beta-SiC
- C04B2235/764—Garnet structure A3B2(CO4)3
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
- C04B2235/81—Materials characterised by the absence of phases other than the main phase, i.e. single phase materials
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
- C04B2235/9653—Translucent or transparent ceramics other than alumina
Definitions
- the present invention relates to a translucent ceramic useful as a material for an optical component such as a lens, and an optical component and an optical device using the same.
- optical components such as lenses mounted on optical devices.
- optical materials are required to have a large Abbe number.
- optical materials with a large Abbe number are used as lens materials for imaging optical devices that handle a wide wavelength range of visible light, for example, imaging optical devices connected to cameras and video cameras, chromatic aberration correction and spherical aberration correction, It is advantageous.
- Patent Document 1 discloses a single crystal made of yttrium-aluminum-garnet (hereinafter referred to as “YAG”).
- Patent Document 2 discloses a translucent ceramic mainly composed of Ba (Mg, Ta) O-based perovskite.
- optical properties such as refractive index and Abbe number can be changed by substituting part of Mg and Z or Ta with Sn and Z or Zr.
- the Abbe number is insufficient even in this material system.
- Patent Document 3 requires firing in a vacuum or firing in a reducing atmosphere in order to obtain translucency. Therefore, there is a problem that the manufacturing cost is high and it is difficult to obtain stable characteristics.
- Patent Document 1 Japanese Patent Laid-Open No. 6-135800
- Patent Document 2 Japanese Patent Laid-Open No. 2004-75512
- Patent Document 3 JP-A-6-107456
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a stable translucent ceramic having a high Abbe number and low optical costs. It is in trying to provide.
- Another object of the present invention is to provide an optical component configured using the above-described translucent ceramic, and an optical device using the optical component.
- the translucent ceramic according to the present invention has a general formula: Y A1 O (4.4 ⁇ v ⁇ 5.4, w is an electrical medium
- the main component that also has the garnet-type compound force is (Y, Gd) Al 2 O (4.4 ⁇ v ⁇ 5.4, w is a positive number for maintaining electrical neutrality. It is
- substitution amount of Ga of A1 is preferably 30 to 90 mole 0/0.
- the translucent ceramic according to the present invention desirably has a linear transmittance of visible light having a wavelength of 633 nm at a sample thickness of 0.4 mm (hereinafter simply referred to as “linear transmittance” unless otherwise specified). ) Is more than 20%.
- the present invention is further directed to the optical component having the above-described translucent ceramic force and an optical device on which the optical component is mounted.
- the Abbe number is as large as 35 or more, In particular, it is advantageous in correcting chromatic aberration and spherical aberration when used as a lens material for an imaging system optical device that handles a wide wavelength range of visible light, for example, a camera or video camera.
- the translucent ceramic according to the present invention since the sinterability is improved by Ga substitution, there is no need for a complicated manufacturing process that does not require the atmosphere during firing to be a vacuum or a reducing atmosphere. It becomes. Therefore, the manufacturing cost can be reduced and the optical characteristics can be stabilized.
- the Abbe number and the refractive index can be largely changed by the composition modification of Ga substitution and Z or Gd substitution. Can increase the degree of freedom.
- FIG. 1 is a cross-sectional view showing a biconvex lens 10 as a first example of an optical component constituted by using a translucent ceramic according to the present invention.
- FIG. 2 is a cross-sectional view showing a biconcave lens 11 as a second example of an optical component configured using the translucent ceramic according to the present invention.
- FIG. 3 is a cross-sectional view showing a meniscus lens 12 as a third example of an optical component configured using a translucent ceramic according to the present invention.
- FIG. 4 is a cross-sectional view showing an optical path length adjusting plate 13 as a fourth example of an optical component configured using the translucent ceramic according to the present invention.
- FIG. 5 is a cross-sectional view showing a spherical lens 14 as a fifth example of an optical component configured using the translucent ceramic according to the present invention.
- FIG. 6 is a front view schematically showing an optical pickup 9 as an example of an optical device on which an optical component configured using a translucent ceramic according to the present invention is mounted.
- FIG. 7 is a side view schematically showing a Gauss type lens optical system 20 as an example of an optical device on which an optical component constituted by using a translucent ceramic according to the present invention is mounted. Explanation of symbols
- the translucent ceramic according to the present invention has a garnet whose main crystal phase is represented by Y A1 O.
- the molar ratio of Y-site element, A1-site element and oxygen is close to 3: 5: 12.
- the range of V needs to be 4.4 to 5.4.
- the translucent ceramic according to the present invention is characterized in that part or all of the A1 site is substituted with Ga.
- This Ga substitution improves the sinterability when firing YAG ceramics. Therefore, it is not necessary to perform baking in a special atmosphere such as a vacuum or a reducing atmosphere by introducing hydrogen. That is, firing in the air may be performed. Desirably, firing is performed in an atmosphere having an oxygen partial pressure of 90% or more.
- the Abbe number and the refractive index change greatly due to Ga substitution.
- the Abbe number has a decreasing force.
- the refractive index increases, and miniaturization of optical components is promoted.
- the sinterability is particularly improved, and the linear transmittance can be increased to 50% or more.
- Gb substitution further changes the Abbe number and refractive index. The power to decrease the Abbe number as the amount of Gd substitution increases. However, since it is 35 or more, there is no practical problem. Instead of decreasing the Abbe number, the refractive index increases and the miniaturization of the optical component is promoted.
- the translucent ceramic according to the present invention may contain impurities that may be inevitably mixed in the manufacturing process within a range that does not impair the object of the present invention.
- impurities contained in oxides or carbonates used as raw materials or impurities mixed in the manufacturing process include Fe 2 O, B 2 O, WO, Bi 2 O, Sb 2 O, P 2 O and CuO, and rare earth element oxides.
- raw materials such as acid oxides of Y, Al, Ga and Gd are prepared, a predetermined amount is weighed, mixed, and calcined to obtain a ceramic raw material.
- the raw material is not limited to an oxide, but may be a hydroxide or carbonate.
- the method for producing the ceramic raw material is not limited to such a solid phase method.
- the translucent ceramic of the present invention the sinterability is improved by Ga substitution, so that the manufacturing cost is high and there is no need to use a wet method.
- an unfired ceramic molded body formed by molding a ceramic raw material powder into a predetermined shape is prepared, and the ceramic molded body is fired.
- the atmosphere at this time may be an atmospheric pressure which does not need to be a vacuum or a reduced pressure / pressurized atmosphere such as HIP (Hot Isostatic Press).
- the oxygen concentration is preferably 90% or more in order to improve translucency.
- the ceramic molded body is brought into contact with a co-firing composition having substantially the same composition as the ceramic raw material powder in order to further improve translucency.
- the co-firing composition is, for example, a powder obtained by calcining and pulverizing a raw material adjusted to have the same composition as the ceramic molded body.
- This co-firing composition can suppress volatilization of volatile components in the ceramic molded body during firing. Therefore, the firing step is preferably performed in a state where an unfired ceramic molded body is embedded in the powder of the composition for simultaneous firing.
- Co-firing composition is powder It may be a molded body or a sintered body, not limited to the end.
- the co-firing composition preferably has the same composition as the ceramic raw material powder for the ceramic molded body, but may be substantially the same composition.
- the fact that the composition for co-firing has substantially the same composition as the ceramic raw material powder for an unfired ceramic molded body means that the composition is equivalent to the same composition containing the same constituent elements. It may not be the composition ratio. Further, the co-firing composition does not necessarily have a composition capable of providing translucency.
- the translucent ceramic according to the present invention can be used for optical components such as lenses, for example, a biconvex lens 10, a biconcave lens 11, a meniscus lens 12, and an optical path as shown in FIGS. It can be used for the length adjusting plate 13 and the spherical lens 14.
- optical pickups there are optical pickups that use a single optical system to cover multiple lights with different wavelengths, and optical materials with high Abbe numbers are sometimes required.
- the optical pickup 9 irradiates a recording medium 1 such as a compact disc or a minidisc with a laser beam 8 that is coherent light, and the recording medium 1 is reflected from the reflected light. The recorded information is reproduced.
- a recording medium 1 such as a compact disc or a minidisc with a laser beam 8 that is coherent light
- a collimator lens 4 that converts laser light 8 from a semiconductor laser 5 as a light source into parallel light is provided, and a half mirror 3 is provided on the optical path of the parallel light. Yes.
- the half mirror 3 travels straight through the incident light from the collimator lens 4, but the reflected light from the recording medium 1 changes its traveling direction by about 90 degrees, for example, by reflection.
- the optical pickup 9 is provided with an objective lens 2 for condensing incident light from the half mirror 3 on the recording surface of the recording medium 1.
- the objective lens 2 is also used to efficiently send reflected light from the recording medium 1 to the half mirror 3 by directing power. In the mirror 1 where the reflected light is incident, the traveling direction of the reflected light is changed by changing the phase due to reflection.
- the optical pickup 9 is provided with a condensing lens 6 for condensing the changed reflected light. And to reproduce the information of reflected light power at the reflected light condensing position A light receiving element 7 is provided.
- the translucent ceramic according to the present invention is advantageously used as, for example, each material of the objective lens 2, the half mirror 3, the collimator lens 4, and the condenser lens 6. be able to.
- optical system for a single-lens reflex camera will be described as another example of the optical device.
- a Gauss type lens optical system 20 widely used as an optical system for a single-lens reflex camera is composed of seven lenses 21 to 27.
- the high Abbe number translucent ceramic according to the present invention is used for the lens 22 and the lens 25 which are arranged with the diaphragm 28 therebetween, the chromatic aberration can be corrected with high accuracy.
- composition formula (Y Gd) (Al Ga) O (w is a positive number for maintaining electrical neutrality)
- Each raw material powder was weighed so as to obtain each sample shown in Table 1 and was wet-mixed for 20 minutes with a ball mill. This mixture was dried and calcined at 1300 ° C for 3 hours to obtain a calcined powder.
- the calcined powder was placed in a ball mill together with water and an organic binder, and wet pulverized for 16 hours. Ethyl cellulose was used as the organic binder.
- the pulverized product was dried, granulated through a 50 mesh screen (sieve), and the obtained powder was pressed and pressed at a pressure of 196 MPa to obtain a diameter of 30 mm and a thickness of A 2 mm disk-shaped green ceramic molded body was obtained.
- the unfired ceramic molded body was embedded in a powder having the same composition as the ceramic raw material powder contained therein.
- the embedded molded body was put in a firing furnace and heated in an air atmosphere to remove the binder.
- oxygen was injected into the furnace while raising the temperature, and the oxygen concentration in the firing atmosphere was increased to about 95% by volume in the maximum temperature range of 1575–1675 ° C.
- the maximum temperature an optimum temperature was appropriately selected depending on the material composition.
- the sample No. 7 was 1675 ° C. This sintered temperature and oxygen concentration were maintained, and sintered for 20 hours to obtain a sintered body.
- the total pressure during firing is 1 Pressure.
- the structure of the sintered body thus obtained was evaluated by X-ray diffraction. As a result, it was almost a single phase of a garnet structure.
- the sintered body was mirror-finished and finished into a disk shape with a thickness of 0.4 mm to obtain a translucent ceramic sample.
- the linear transmittance in the visible light region was measured.
- a spectrophotometer (UV-2500) manufactured by Shimadzu Corporation was used to measure these linear transmittances.
- the refractive index of each of the above samples was measured.
- a Metricon prism coupler MODEL2010
- Equation 1 Equation 1: Equation 1: Equation 1: Equation 1 + Equation 1 +
- n, n, and n are the refractive indices of d-line, F-line, and C-line, respectively) d F C
- Table 1 shows the refractive index n, Abbe number V, and linear transmittance obtained as described above.
- Samples 4 to 10 in which the Ga substitution amount y was in the range of 0.3 to 0.9 showed a high linear transmittance of 50% or more.
- samples 14, 15, 21, 22 and 23 ⁇ were not within the range of ⁇ force 4 ⁇ 4 to 5 ⁇ 4, so a heterogeneous phase appeared and translucency that could withstand practicality was not obtained. I helped.
- the refractive index in TE mode and TM mode at ⁇ 587.56 nm (d line) was measured for sample 7 within the scope of the present invention, and both were 1.895.
- the refractive indexes in the TE mode and the TM mode are the same value, it can be seen that birefringence occurs.
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- Ceramic Engineering (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
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Abstract
Description
Claims
Priority Applications (3)
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JP2008522365A JP5088320B2 (ja) | 2006-06-21 | 2007-05-29 | 透光性セラミック、ならびに光学部品および光学装置 |
GB0820841A GB2451386A (en) | 2006-06-21 | 2008-11-13 | Light transparent ceramic,and optical component and optical device |
US12/323,777 US7691764B2 (en) | 2006-06-21 | 2008-11-26 | Translucent ceramic, optical component, and optical device |
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JP2006-171600 | 2006-06-21 | ||
JP2006171600 | 2006-06-21 |
Related Child Applications (1)
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US12/323,777 Continuation US7691764B2 (en) | 2006-06-21 | 2008-11-26 | Translucent ceramic, optical component, and optical device |
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WO2007148513A1 true WO2007148513A1 (ja) | 2007-12-27 |
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PCT/JP2007/060863 WO2007148513A1 (ja) | 2006-06-21 | 2007-05-29 | 透光性セラミック、ならびに光学部品および光学装置 |
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US (1) | US7691764B2 (ja) |
JP (1) | JP5088320B2 (ja) |
CN (1) | CN101489951A (ja) |
GB (1) | GB2451386A (ja) |
TW (1) | TW200815306A (ja) |
WO (1) | WO2007148513A1 (ja) |
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JP2018070872A (ja) * | 2012-11-14 | 2018-05-10 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | シンチレータ材料 |
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US8343901B2 (en) | 2010-10-12 | 2013-01-01 | Chevron Oronite Company Llc | Lubricating composition containing multifunctional hydroxylated amine salt of a hindered phenolic acid |
DE102013100832A1 (de) | 2013-01-28 | 2014-07-31 | Schott Ag | Stark streuender keramischer Konverter sowie ein Verfahren zu dessen Herstellung |
Citations (3)
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JPH0782025A (ja) * | 1993-07-13 | 1995-03-28 | Kyocera Corp | 透光性イットリウム−アルミニウム−ガーネット焼結体およびその製造方法 |
JP2000203933A (ja) * | 1999-01-14 | 2000-07-25 | Natl Inst For Res In Inorg Mater | 乾式混合法による透明イットリウム・アルミニウム・ガ―ネット焼結体の製造法 |
WO2004067474A1 (ja) * | 2003-01-27 | 2004-08-12 | Konoshima Chemical Co., Ltd. | 希土類ガーネット焼結体とその製造方法 |
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JP3285620B2 (ja) | 1992-09-28 | 2002-05-27 | 京セラ株式会社 | 透光性イットリウム−アルミニウム−ガーネット焼結体の製造方法 |
JPH06135800A (ja) | 1992-10-29 | 1994-05-17 | Tokin Corp | 単結晶の製造方法 |
TW383508B (en) * | 1996-07-29 | 2000-03-01 | Nichia Kagaku Kogyo Kk | Light emitting device and display |
JP2927279B2 (ja) * | 1996-07-29 | 1999-07-28 | 日亜化学工業株式会社 | 発光ダイオード |
AU3226101A (en) * | 2000-02-09 | 2001-08-20 | Nippon Leiz Corporation | Light source |
JP3852398B2 (ja) | 2001-11-20 | 2006-11-29 | 株式会社村田製作所 | 透光性セラミックスならびにそれを用いた光学部品および光学素子 |
JP2004091269A (ja) | 2002-08-30 | 2004-03-25 | Rikogaku Shinkokai | 多相セラミックス用溶融体ならびにその鋳造および被覆方法 |
US20050019241A1 (en) * | 2003-07-23 | 2005-01-27 | Lyons Robert Joseph | Preparation of rare earth ceramic garnet |
-
2007
- 2007-05-29 WO PCT/JP2007/060863 patent/WO2007148513A1/ja active Application Filing
- 2007-05-29 JP JP2008522365A patent/JP5088320B2/ja not_active Expired - Fee Related
- 2007-05-29 CN CNA2007800228548A patent/CN101489951A/zh active Pending
- 2007-06-11 TW TW096120922A patent/TW200815306A/zh unknown
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Patent Citations (3)
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JPH0782025A (ja) * | 1993-07-13 | 1995-03-28 | Kyocera Corp | 透光性イットリウム−アルミニウム−ガーネット焼結体およびその製造方法 |
JP2000203933A (ja) * | 1999-01-14 | 2000-07-25 | Natl Inst For Res In Inorg Mater | 乾式混合法による透明イットリウム・アルミニウム・ガ―ネット焼結体の製造法 |
WO2004067474A1 (ja) * | 2003-01-27 | 2004-08-12 | Konoshima Chemical Co., Ltd. | 希土類ガーネット焼結体とその製造方法 |
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JP2018070872A (ja) * | 2012-11-14 | 2018-05-10 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | シンチレータ材料 |
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TW200815306A (en) | 2008-04-01 |
US7691764B2 (en) | 2010-04-06 |
US20090075810A1 (en) | 2009-03-19 |
JPWO2007148513A1 (ja) | 2009-11-19 |
GB0820841D0 (en) | 2008-12-24 |
CN101489951A (zh) | 2009-07-22 |
GB2451386A (en) | 2009-01-28 |
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