WO2018155105A1 - Verre optique - Google Patents

Verre optique Download PDF

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Publication number
WO2018155105A1
WO2018155105A1 PCT/JP2018/003034 JP2018003034W WO2018155105A1 WO 2018155105 A1 WO2018155105 A1 WO 2018155105A1 JP 2018003034 W JP2018003034 W JP 2018003034W WO 2018155105 A1 WO2018155105 A1 WO 2018155105A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical glass
content
glass
less
sio
Prior art date
Application number
PCT/JP2018/003034
Other languages
English (en)
Japanese (ja)
Inventor
俣野　高宏
高山　佳久
Original Assignee
日本電気硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2017250550A external-priority patent/JP7134396B2/ja
Application filed by 日本電気硝子株式会社 filed Critical 日本電気硝子株式会社
Priority to CN201880013298.6A priority Critical patent/CN110325483B/zh
Publication of WO2018155105A1 publication Critical patent/WO2018155105A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
    • C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
    • C03C3/115—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
    • C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
    • C03C3/115—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron
    • C03C3/118—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine containing boron containing aluminium
    • 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

Definitions

  • the present invention relates to optical glass.
  • silica glass has a high glass transition point and softening point, there is a problem that it is inferior in press moldability and it is difficult to obtain a desired lens shape.
  • an object of the present invention is to provide an optical glass having high ultraviolet transmittance and excellent press moldability.
  • the optical glass of the present invention in mass%, SiO 2 40 ⁇ 75% , B 2 O 3 1 ⁇ 30%, Al 2 O 3 0 ⁇ 15%, RO 0.1 ⁇ 10% (R is Mg, Ca, At least one selected from Sr, Ba and Zn), Li 2 O 0.1-10%, Na 2 O + K 2 O 0.5-15%, ZrO 2 0-3%, F 2 0-5% contained, characterized in that it does not contain Sb 2 O 3 substantially.
  • “Na 2 O + K 2 O” means the total content of Na 2 O and K 2 O.
  • a high UV transmittance is achieved by regulating the content of SiO 2 for increasing the UV transmittance to 40% by mass or more and the content of alkali components for reducing the UV transmittance to 25% by mass or less. is doing. Further, the content of RO (R is at least one selected from Mg, Ca, Sr, Ba and Zn) that lowers the glass transition point is 0.1 mass% or more, and the total content of alkali components is 0. By controlling to 6 mass% or more, excellent press formability is achieved. “Substantially free of Sb 2 O 3 ” means that the material is not intentionally contained, and objectively, the content of Sb 2 O 3 is less than 0.1%. Say.
  • the optical glass of the present invention preferably further contains La 2 O 3 + Nb 2 O 5 + Bi 2 O 3 + WO 3 0 to 0.05% by mass.
  • La 2 O 3 + Nb 2 O 5 + Bi 2 O 3 + WO 3 means the total content of La 2 O 3 , Nb 2 O 5 , Bi 2 O 3 and WO 3 .
  • the optical glass of the present invention preferably further contains, by mass%, TiO 2 100 ppm or less and Fe 2 O 3 50 ppm or less.
  • the optical glass of the present invention preferably has a refractive index (nd) of 1.45 to 1.55.
  • nd refractive index
  • Nd refractive index at the d-line.
  • the optical glass of the present invention preferably has a glass transition point of 550 ° C. or lower.
  • the optical glass of the present invention preferably has a softening point of 700 ° C. or lower.
  • the optical glass of the present invention preferably has a thickness of 1 mm and a transmittance of 50% or more at a wavelength of 270 nm.
  • the optical glass of the present invention preferably has a thickness of 1 mm and a transmittance of 80% or more at a wavelength of 300 nm.
  • the optical glass of the present invention is preferably for press molding.
  • the optical glass lens of the present invention is characterized by comprising the above optical glass.
  • an optical glass having a high ultraviolet transmittance and excellent press moldability.
  • the optical glass of the present invention comprises SiO 2 40-75%, B 2 O 3 1-30%, Al 2 O 3 0-15%, RO 0.1-10% (R is Mg, Ca, Sr, Ba and At least one selected from Zn), Li 2 O 0.1-10%, Na 2 O + K 2 O 0.5-15%, ZrO 2 0-3%, F 2 0-5%, In particular, it does not contain Sb 2 O 3 .
  • R is Mg, Ca, Sr, Ba and At least one selected from Zn
  • Li 2 O 0.1-10% Li 2 O 0.1-10%, Na 2 O + K 2 O 0.5-15%, ZrO 2 0-3%, F 2 0-5%, In particular, it does not contain Sb 2 O 3 .
  • % means “mass%”.
  • SiO 2 has the effects of improving the ultraviolet transmittance and weather resistance, lowering the refractive index, and further increasing the liquid phase viscosity.
  • the content of SiO 2 is 40 to 75%, preferably 45 to 70%, particularly preferably 50 to 65%.
  • ultraviolet transmittance tends to decrease.
  • the content of SiO 2 is too large, the glass transition point rises press molding tends to decrease. Further, deteriorates the melting property of the glass, devitrification is likely to precipitate containing SiO 2.
  • B 2 O 3 has effects of lowering the refractive index, increasing the liquid phase viscosity, and further improving the weather resistance.
  • the content of B 2 O 3 is 1 to 30%, preferably 3 to 26%, particularly preferably 5 to 22%. If the content of B 2 O 3 is too small, it becomes difficult to lower the refractive index. On the other hand, when the content of B 2 O 3 is too large, the weather resistance is deteriorated, and striae is likely to occur because it is likely to evaporate during molding.
  • Al 2 O 3 has effects of lowering the refractive index, increasing the liquid phase viscosity, and further improving the weather resistance.
  • the content of Al 2 O 3 is 0 to 15%, preferably 1 to 13%, 2 to 11%, particularly preferably 3 to 9%. When the content of Al 2 O 3 is too large, deteriorated solubility in glass, devitrification containing Al 2 O 3 is likely to precipitate.
  • SiO 2 / B 2 O 3 is 10 or less, 7.5 or less, 5 or less, 4 or less, and particularly preferably 3 or less. If SiO 2 / B 2 O 3 is too large, the solubility of the glass is deteriorated, and devitrified materials containing SiO 2 are likely to precipitate. Further, the lower limit of SiO 2 / B 2 O 3 is not particularly limited, but in reality, it is preferably 1 or more. “SiO 2 / B 2 O 3 ” indicates a value obtained by dividing the content of SiO 2 by the content of B 2 O 3 .
  • SiO 2 / Al 2 O 3 is 10 or less, 7.5 or less, 5 or less, 4 or less, and particularly preferably 3 or less.
  • the lower limit of SiO 2 / Al 2 O 3 is not particularly limited, but in reality, it is preferably 1 or more.
  • SiO 2 / Al 2 O 3 refers to a value obtained by dividing the content of SiO 2 by the content of Al 2 O 3 .
  • RO is at least one selected from Mg, Ca, Sr, Ba and Zn
  • the RO content (total amount) is 0.1 to 10%, preferably 1 to 8%, particularly preferably 2 to 5%.
  • content of each component of RO is also the said range, respectively.
  • Li 2 O is a component that lowers the glass transition point and lowers the high temperature viscosity of the glass.
  • the content of Li 2 O is 0.1 to 10%, preferably 1 to 8%, particularly preferably 2 to 6%.
  • the Li 2 O content is too small, it becomes difficult to lower the glass transition point.
  • the content of Li 2 O is too large, or reduces the ultraviolet transmittance, weather resistance tends to deteriorate.
  • the glass is easily fused to the press mold during press molding.
  • Na 2 O and K 2 O are components that lower the glass transition point and lower the high temperature viscosity of the glass.
  • the content of Na 2 O + K 2 O is 0.5 to 15%, preferably 1 to 10%, 1 to 8%, 2 to 7%, particularly preferably 3 to 6%.
  • Na 2 O + K content of 2 O is too small, the effect is difficult to obtain.
  • the content of Na 2 O + K 2 O is too large, or reduces the ultraviolet transmittance, weather resistance tends to deteriorate.
  • a preferable range of the content of Na 2 O and K 2 O is as follows.
  • the content of Na 2 O is preferably 0 to 10%, 0.5 to 8%, 1 to 7%, particularly 2 to 6%.
  • the content of K 2 O is preferably 0 to 10%, 0.5 to 8%, 1 to 7%, particularly 2 to 6%.
  • the content of Li 2 O + Na 2 O + K 2 O is preferably 0.6 to 25%, 2 to 18%, particularly 5 to 12%.
  • Li 2 O + Na 2 O + K 2 O content is too small, it becomes difficult to lower the glass transition point.
  • the content of Li 2 O + Na 2 O + K 2 O is too large, or reduces the ultraviolet transmittance, weather resistance tends to deteriorate.
  • “Li 2 O + Na 2 O + K 2 O” means the total content of Li 2 O, Na 2 O and K 2 O.
  • Li 2 O / (Na 2 O + K 2 O) is preferably 10 or less, 5 or less, 3 or less, 2 or less, particularly 1 or less. If Li 2 O / (Na 2 O + K 2 O) is too large, the glass is likely to be fused to the press mold during press molding.
  • the lower limit of Li 2 O / (Na 2 O + K 2 O) is preferably 0.01 or more. “Li 2 O / (Na 2 O + K 2 O)” indicates a value obtained by dividing the content of Li 2 O by the content of Na 2 O + K 2 O.
  • (Li 2 O + Na 2 O + K 2 O) / RO is preferably 100 or less, 50 or less, 30 or less, 25 or less, particularly 20 or less.
  • the lower limit of (Li 2 O + Na 2 O + K 2 O) / RO is preferably 0.1 or more. “(Li 2 O + Na 2 O + K 2 O) / RO” indicates a value obtained by dividing the content of Li 2 O + Na 2 O + K 2 O by the content of RO.
  • ZrO 2 has the effect of improving the weather resistance.
  • the content of ZrO 2 is 0 to 3%, preferably 0 to 2%, particularly preferably 0.1 to 2%.
  • the content of ZrO 2 is too large, or reduces the ultraviolet transmittance, the liquid phase viscosity tends to be devitrified reduced.
  • F 2 is a component that increases the ultraviolet transmittance.
  • the content of F 2 is 0 to 5%, preferably 0.5 to 3%, particularly preferably 1 to 2%.
  • the content of F 2 is too large, evaporation at the time of melting increases, causing striae and the like, and the glass tends to be inhomogeneous. In addition, the glass is easily fused to the press mold during press molding.
  • Sb 2 O 3 tends to lower the ultraviolet transmittance, it is preferable not to contain Sb 2 O 3 substantially.
  • La 2 O 3 , Nb 2 O 5 , Bi 2 O 3 and WO 3 are components that enhance weather resistance and chemical weather resistance. Moreover, a refractive index can be adjusted by containing these components.
  • the content of La 2 O 3 + Nb 2 O 5 + Bi 2 O 3 + WO 3 is preferably 0 to 0.05%. When there is too much content of these components, it will become easy to produce malfunctions, such as a fall of devitrification resistance, a raise of melting temperature, or a fall of ultraviolet-ray transmittance.
  • the content of each component of the La 2 O 3, Nb 2 O 5, Bi 2 O 3 and WO 3 is also preferably respectively within the above range.
  • TiO 2 tends to lower the ultraviolet transmittance, its content is preferably as small as possible. Specifically, the content of TiO 2 is preferably 100 ppm or less, particularly 50 ppm or less.
  • Fe 2 O 3 that is likely to be mixed as an impurity is liable to lower the ultraviolet transmittance, and therefore its content is preferably as small as possible.
  • the content of Fe 2 O 3 is preferably 50 ppm or less, particularly preferably 30 ppm or less.
  • a component such as carbon or metallic tin that serves as a reducing agent when the glass is melted may be added.
  • Cu, Ag, Pr, and Br are components that color the glass, it is preferable that they are not substantially contained. Considering the influence on the environment, Cd is preferably not substantially contained. “Substantially free of Cu, Ag, Pr, Br, Cd” means that it is not intentionally contained as a raw material, and objectively contains Cu, Ag, Pr, Br, Cd. The amount is less than 0.1%.
  • the optical glass having the above composition preferably has a refractive index nd of 1.45 to 1.55, 1.48 to 1.53, particularly 1.49 to 1.52.
  • the Abbe number is preferably 50 to 65, 52 to 63, particularly 54 to 60.
  • the optical glass of the present invention has a relatively low refractive index as described above, the light incident efficiency is high. Therefore, there is substantially no problem even if an antireflection film is not provided. However, an antireflection film may be formed as necessary.
  • the optical glass of the present invention preferably has a glass transition point of 550 ° C. or lower, 530 ° C. or lower, particularly 500 ° C. or lower.
  • a glass transition point is not specifically limited, Actually, it is 400 degreeC or more.
  • a softening point is 700 degrees C or less, 680 degrees C or less, especially 650 degrees C or less.
  • the lower limit of the softening point is not particularly limited, but is practically 550 ° C. or higher. Since the glass transition point and the softening point are low, the press molding temperature is lowered and the deterioration of the press mold is easily suppressed.
  • the difference between the glass transition point and the softening point is preferably 245 ° C. or lower, 220 ° C. or lower, particularly 200 ° C. or lower. If the difference between the glass transition point and the softening point is small, the glass tends to solidify quickly when it is press-molded and cooled, so that the glass is difficult to fuse to the press mold.
  • the optical glass of the present invention has a thermal expansion coefficient in the range of 30 to 300 ° C. of 40 ⁇ 10 ⁇ 7 / ° C. or more, 50 ⁇ 10 ⁇ 7 / ° C. or more, 60 ⁇ 10 ⁇ 7 / ° C. or more, particularly 70 ⁇ 10 ⁇ 7 / ° C. or higher is preferable. If the thermal expansion coefficient is too low, it becomes difficult to release the glass from the press mold after press molding and cooling.
  • the upper limit of the thermal expansion coefficient is not particularly limited, but is practically 150 ⁇ 10 ⁇ 7 / ° C. or lower.
  • the optical glass of the present invention generally has a good light transmittance in the deep ultraviolet region having a wavelength of 350 nm or less.
  • the optical glass of the present invention preferably has a light transmittance of 50% or more, 60% or more, particularly 70% or more at a thickness of 1 mm and a wavelength of 270 nm.
  • the light transmittance at a thickness of 1 mm and a wavelength of 300 nm is preferably 80% or more, 85% or more, particularly 90% or more.
  • glass raw materials are prepared so as to have a desired composition and then melted in a glass melting furnace.
  • the melting temperature of the glass is preferably 1150 ° C. or higher, 1200 ° C. or higher, particularly 1250 ° C. or higher.
  • the melting temperature is preferably 1450 ° C. or lower, 1400 ° C. or lower, 1350 ° C. or lower, particularly 1300 ° C. or lower from the viewpoint of preventing glass coloring due to Pt melting from platinum metal constituting the melting vessel.
  • the melting time is preferably 2 hours or more, particularly 3 hours or more.
  • the melting time is preferably within 8 hours, particularly within 5 hours.
  • molten glass is dropped from the tip of the nozzle to produce droplet glass to obtain optical glass.
  • a molten glass is rapidly cast to produce a glass block, which is then ground, polished and washed to obtain an optical glass.
  • the optical glass is put into a precision-worked mold and press-molded while being heated until it becomes softened, and the surface shape of the mold is transferred to the optical glass. In this way, an optical glass lens can be obtained.
  • optical glass of the present invention will be described in detail based on examples.
  • Tables 1 and 2 show examples (sample Nos. 1 to 12) and comparative examples (sample No. 13) of the present invention.
  • glass raw materials prepared so as to have the compositions shown in Tables 1 and 2 were placed in a platinum crucible and melted at 1300 ° C. for 2 hours, respectively.
  • the molten glass was poured onto a carbon plate, cooled and solidified, and then annealed to produce a glass block. Thereafter, grinding, polishing, and washing were performed to obtain an optical glass.
  • Various characteristics of the optical glass thus obtained were evaluated. The results are shown in each table.
  • the optical glass is put into a precision-processed mold and pressed while heating at the softening point. The surface shape of the mold is transferred to the optical glass, and a flat surface having a front curvature radius of 20 mm and a center thickness of 4 mm is obtained.
  • a convex lens, a plano-convex lens having a front curvature radius of 10 mm and a center thickness of 0.5 mm, and a biconvex lens having a front curvature radius of 10 mm, a rear curvature radius of 10 mm, and a center thickness of 0.5 mm were obtained.
  • Refractive index nd is indicated by a measured value at d-line (wavelength: 587.6 nm) using a refractometer.
  • the glass transition point was measured using a dilatometer.
  • Softening point was measured using a fiber elongation method.
  • the thermal expansion coefficient was measured in a temperature range of 30 to 300 ° C. using a dilatometer.
  • the light transmittance was measured with a spectrophotometer (UV-3100, manufactured by Shimadzu Corporation).
  • TiO 2 and Fe 2 O 3 were analyzed by an inductively coupled plasma mass spectrometer (ICP-MS).
  • each of the samples 1 to 12 has a refractive index nd of 1.46 to 1.54, a glass transition point of 440 to 540 ° C., a softening point of 600 to 699 ° C., and a thermal expansion coefficient of 42 to 90 ⁇ 10 ⁇ 7 / ° C.
  • the light transmittance (270 nm) was 55 to 78%, and the light transmittance (300 nm) was 81 to 94%.
  • No. which is a comparative example. It was found that the sample No. 13 had a high glass transition point of 630 ° C. and a softening point of 785 ° C. and was inferior in press formability.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne un verre optique qui présente une transmittance élevée aux ultraviolets et une excellente aptitude au moulage à la presse. Un verre optique qui est caractérisé en ce qu'il contient, en % massiques, 40 à 75 % de SiO2, 1 à 30 % de B2O3, 0 à 15 % de Al2O3, 0,1 à 10 % de RO (où R représente au moins un élément choisi parmi Mg, Ca, Sr, Ba et Zn), 0,1 à 10 % de Li2O, 0,5 à 15 % de Na2O + K2O, 0 à 3 % de ZrO2 et 0 à 5 % de F2, tout en ne contenant substantiellement pas de Sb2O3.
PCT/JP2018/003034 2017-02-24 2018-01-30 Verre optique WO2018155105A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880013298.6A CN110325483B (zh) 2017-02-24 2018-01-30 光学玻璃

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2017-033379 2017-02-24
JP2017033379 2017-02-24
JP2017250550A JP7134396B2 (ja) 2017-02-24 2017-12-27 光学ガラス
JP2017-250550 2017-12-27

Publications (1)

Publication Number Publication Date
WO2018155105A1 true WO2018155105A1 (fr) 2018-08-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112028475A (zh) * 2020-09-11 2020-12-04 成都光明光电股份有限公司 光学玻璃和光学元件
CN112028474A (zh) * 2020-09-11 2020-12-04 成都光明光电股份有限公司 光学玻璃
CN112047625A (zh) * 2020-09-17 2020-12-08 成都光明光电股份有限公司 透紫外光学玻璃

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Publication number Priority date Publication date Assignee Title
JPS57188431A (en) * 1981-05-12 1982-11-19 Nippon Sheet Glass Co Ltd Optical glass containing thallium
JPS6325248A (ja) * 1986-07-11 1988-02-02 コ−ニング　グラス　ワ−クス 透過率可変着色ガラス
JPS63169601A (ja) * 1987-01-07 1988-07-13 Nippon Sheet Glass Co Ltd 屈折率分布型光学素子
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112028475A (zh) * 2020-09-11 2020-12-04 成都光明光电股份有限公司 光学玻璃和光学元件
CN112028474A (zh) * 2020-09-11 2020-12-04 成都光明光电股份有限公司 光学玻璃
CN112047625A (zh) * 2020-09-17 2020-12-08 成都光明光电股份有限公司 透紫外光学玻璃
CN112047625B (zh) * 2020-09-17 2022-04-15 成都光明光电股份有限公司 透紫外光学玻璃

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