WO2020175403A1 - 赤外線透過ガラス - Google Patents
赤外線透過ガラス Download PDFInfo
- Publication number
- WO2020175403A1 WO2020175403A1 PCT/JP2020/007218 JP2020007218W WO2020175403A1 WO 2020175403 A1 WO2020175403 A1 WO 2020175403A1 JP 2020007218 W JP2020007218 W JP 2020007218W WO 2020175403 A1 WO2020175403 A1 WO 2020175403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- glass
- present
- content
- less
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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
- C03C3/32—Non-oxide glass compositions, e.g. binary or ternary halides, sulfides or nitrides of germanium, selenium or tellurium
- C03C3/321—Chalcogenide glasses, e.g. containing S, Se, Te
-
- 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
- C03C3/32—Non-oxide glass compositions, e.g. binary or ternary halides, sulfides or nitrides of germanium, selenium or tellurium
- C03C3/321—Chalcogenide glasses, e.g. containing S, Se, Te
- C03C3/323—Chalcogenide glasses, e.g. containing S, Se, Te containing halogen, e.g. chalcohalide glasses
-
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/10—Compositions for glass with special properties for infrared transmitting glass
-
- 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
- C03C2204/00—Glasses, glazes or enamels with special properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- 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
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
Definitions
- the present invention relates to an infrared transmitting glass used for an infrared sensor and the like.
- In-vehicle night vision systems, security systems, etc. are equipped with an infrared sensor used for night-time living body detection.
- An infrared sensor is a device that detects infrared rays emitted by a living body and has a wavelength of about 8 to 14, and an optical element such as a filter or a lens that transmits infrared rays in the wavelength range is provided in front of the sensor section.
- chalcogenide glass has been proposed as a glassy material that transmits infrared rays having a wavelength of about 8 to 14 and is relatively easy to process (for example, Patent Document 1).
- Patent Document 1 European Patent No. 1 6 4 2 8 70
- Patent Document 1 The glass described in Patent Document 1 has a narrow vitrification range and is thermally unstable.
- an object of the present invention is to provide a thermally stable infrared transparent glass.
- the infrared transparent glass of the present invention is ⁇ 02020/175403 2 ⁇ (: 170? 2020 /007218
- An optical element of the present invention is characterized by using the above infrared transmitting glass.
- An infrared sensor of the present invention is characterized by using the above optical element.
- the infrared transparent glass of the present invention can provide a thermally stable infrared transparent glass.
- the infrared transparent glass of the present invention is, in mol%, ⁇ more than 61 to 40%, ⁇ 3
- [0013] is an essential component for forming the glass skeleton.
- ⁇ 6 content is 1
- [0014] is an essential component that enhances the thermal stability of glass (stability of vitrification).
- the content of 3 is more than 0 to 40%, preferably 1 to 30%, more preferably 2 to 20%. ⁇ If the content of 3 is too small, it becomes difficult to form glass. On the other hand , if the content of (38) is too high, ⁇ 8 type crystals will precipitate. ⁇ 02020/175403 3 ⁇ (: 170? 2020 /007218
- Ding 6 which is a chalcogen element is an essential component forming a glass skeleton.
- the content of Ding 6 is 40 to less than 80%, more preferably 50 to 79%, and particularly preferably 65 to 78%. If the content of Ding 6 is too small, it will be difficult to vitrify. On the other hand, if the content of Ding 6 is too large, Ding 6 type crystals will precipitate and it will be difficult for infrared rays to pass through.
- ⁇ 3, 89, 83, and ⁇ are components that enhance the thermal stability of glass without degrading the infrared transmission characteristics.
- the content of children is 0 to 40%, preferably 0.1 to 20%, and particularly preferably 0.2 to 10%
- the content of 9 is preferably ⁇ to 40%, and ⁇ .1 to 20%. It is more preferable that the content is 0.2 to 10%, and the term “substantially free from” in the present specification means that the raw material is not intentionally included. However, it does not exclude the inclusion of impurity levels. Objectively, the content of each component is preferably less than 0.1%. Also
- each component of ⁇ 3, 89, 83, and ⁇ is preferably ⁇ to 40%, more preferably 0.1 to 20%, and 0.2 to 10%. It is particularly preferable that there is. Above all, it is preferable to use 89 and/or 3 n from the viewpoint that the effect of enhancing the thermal stability of the glass is particularly large.
- ⁇ ⁇ , ⁇ “, ⁇ is also a component that enhances the thermal stability of glass. + ⁇ 1 ⁇ 02020/175403 4 (:170? 2020/007218
- + ⁇ “+ ⁇ content is ⁇ to 40%, more preferably ⁇ to 20%, and particularly preferably 0.1 to 10%.
- the content of each of ⁇ and ⁇ M is preferably ⁇ to 40%. , And more preferably from 0 to 20%, particularly preferably from 0.1 to 10% Among them, the elemental raw materials can be used, and the effect of enhancing the thermal stability of glass is particularly large. Then, it is preferable to use ⁇ .
- the infrared transparent glass of the present invention may contain the following components in addition to the above components.
- 3 6 is a chalcogen element widening the vitrification range, the thermal stability of the glass is high Mel component.
- the content thereof is preferably 0 to 40%, more preferably 0.1 to 20%, and particularly preferably 0.2 to 10%.
- 36 has toxicity, it is preferably 5% or less, more preferably 3% or less, and 1% or less from the viewpoint of reducing the effect on the environment and the human body. It is more preferable, and it is particularly preferable not to contain substantially.
- the chalcogen element 3 is a component that expands the vitrification range and enhances the thermal stability of glass. However, if the content of 3 is too large, it becomes difficult for infrared rays to pass through. Therefore, the content of 3 is preferably 0 to 40%, 0 to 20%, 0 to 10%, and 0 to 4%, and particularly preferably substantially not contained.
- the infrared transparent glass of the present invention is a toxic substance It is preferable that it does not substantially contain D and I. In this way, the impact on the environment can be minimized.
- the infrared-transmissive glass of the present invention does not have any particles having a major axis of 500 or more. Even if the seeds are present in the infrared transmitting glass, the length thereof is preferably less than 500 ⁇ !, 200 ⁇ ! or less, 100 or less, 50 or less, and particularly preferably 10 or less. By doing this, infrared transmission characteristics ⁇ 0 2020/175403 5 ⁇ (: 170? 2020/007218
- butsu refers to a foreign substance present in the glass, and refers to particles or aggregates of particles made of undissolved raw material or crystal precipitate.
- the infrared transmitting glass of the present invention has an infrared absorption edge wavelength at a thickness of 20! nowadays of preferably not less than 1501, more preferably not less than 20, more preferably not less than 21. It is particularly preferable that In the present invention, the “infrared absorption edge wavelength” means a wavelength at which the light transmittance is 10% in the infrared region of wavelength 8 or more.
- the infrared transparent glass of the present invention is excellent in average infrared transmittance at a wavelength of about 8 to 14.
- the average internal transmittance at wavelengths 8 to 14 is preferably 80% or more, and particularly preferably 90% or more. If the internal transmittance is too low, the infrared sensitivity may be poor and the infrared sensor may not function sufficiently.
- the infrared transparent glass of the present invention can be produced, for example, as follows.
- Raw materials are mixed so as to obtain the above glass composition, and a raw material batch is obtained.
- the quartz glass ampoule is evacuated while being heated, then the raw material batch is charged and the quartz glass ampoule is sealed with an oxygen burner. It should be noted that it is sufficient that oxygen is not present in the ampoule, and an inert gas or the like may be sealed therein.
- the sealed quartz glass ampoule is heated in the melting furnace at a rate of 10 to 40 ° ⁇ /hour to 650 to 100°° and held for 6 to 12 hours. During the holding time, if necessary, turn the quartz glass ampoule upside down to stir the melt.
- the quartz glass ampoule is taken out of the melting furnace and rapidly cooled to room temperature to obtain the infrared transparent glass of the present invention.
- An optical element can be produced by processing the infrared transmitting glass thus obtained into a predetermined shape (disk shape, lens shape, etc.).
- an antireflection film is formed on one side or both sides of the optical element. ⁇ 0 2020/175403 6 ⁇ (: 170? 2020 /007218
- Examples of the method for forming the antireflection film include a vacuum vapor deposition method, an ion plating method and a sputtering method.
- the antireflection film on the infrared transmitting glass after forming the antireflection film on the infrared transmitting glass, it may be processed into a predetermined shape. However, since peeling of the antireflection film is likely to occur in the processing step, it is preferable to form the antireflection film after processing the infrared transmitting glass into a predetermined shape unless there are special circumstances.
- the infrared-transparent glass of the present invention has excellent infrared transmissivity, and therefore has optical properties such as a cover member for protecting the sensor part of the infrared sensor and a lens for condensing infrared light on the infrared sensor part. It is suitable as an element.
- Tables 1 to 3 show Examples of the present invention and Comparative Examples, respectively.
- the samples of Examples 1 to 24 and Comparative example 25 were prepared as follows. After the quartz glass ampoule was heated and evacuated, the raw material batch prepared so as to have the glass composition shown in the table was added. Next, the quartz glass ampoule was sealed with an oxygen burner. Then, the sealed quartz glass ampoule was heated in the melting furnace at a rate of 10 to 40°°/hour to 650 to 100°° and held for 6 to 12 hours. During the holding time, the quartz glass ampoule was turned upside down and the melt was stirred. Subsequently, the quartz glass ampoule was taken out of the melting furnace and rapidly cooled to room temperature to obtain a sample.
- the internal transmittance of each sample was measured. Internal transmittance is thickness 2 ⁇ 1 ⁇ 0.1 01 111 and 1 ⁇ Sat ⁇ .
- the transmittance including surface reflection loss was measured, and the internal transmittance at wavelengths 8 to 14 ⁇ ⁇ was calculated from the measured values, and the average value was 80% or more. " ⁇ " 80% or less was described as "X”.
- the infrared transmitting glass of the present invention is suitable as a cover member for protecting the sensor part of an infrared sensor and an optical element such as a lens for focusing infrared light on the sensor part.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/430,413 US12515983B2 (en) | 2019-02-28 | 2020-02-21 | Infrared-transmitting glass |
| CN202080009024.7A CN113302164B (zh) | 2019-02-28 | 2020-02-21 | 红外线透射玻璃 |
| EP20763186.2A EP3932883B1 (en) | 2019-02-28 | 2020-02-21 | Infrared-transmitting glass |
| JP2021502220A JP7574794B2 (ja) | 2019-02-28 | 2020-02-21 | 赤外線透過ガラス |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-035815 | 2019-02-28 | ||
| JP2019035815 | 2019-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020175403A1 true WO2020175403A1 (ja) | 2020-09-03 |
Family
ID=72239987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2020/007218 Ceased WO2020175403A1 (ja) | 2019-02-28 | 2020-02-21 | 赤外線透過ガラス |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12515983B2 (ja) |
| EP (1) | EP3932883B1 (ja) |
| JP (1) | JP7574794B2 (ja) |
| CN (1) | CN113302164B (ja) |
| WO (1) | WO2020175403A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784611A (zh) * | 2022-11-17 | 2023-03-14 | 湖北新华光信息材料有限公司 | 硫系光学玻璃及其制备方法和光学元件 |
| WO2023095900A1 (ja) * | 2021-11-29 | 2023-06-01 | 日本電気硝子株式会社 | 赤外線透過ガラス |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7058825B2 (ja) * | 2018-02-28 | 2022-04-25 | 日本電気硝子株式会社 | 赤外線透過ガラス |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1642870A1 (fr) | 2004-09-09 | 2006-04-05 | Umicore | Verres de chalcogénures à base de Te pour transmission dans l'infrarouge moyen et lointain |
| WO2017086227A1 (ja) * | 2015-11-20 | 2017-05-26 | 旭硝子株式会社 | 光学ガラス |
| JP2017114733A (ja) * | 2015-12-25 | 2017-06-29 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| JP2017124952A (ja) * | 2016-01-14 | 2017-07-20 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| WO2017168939A1 (ja) * | 2016-03-31 | 2017-10-05 | 富士フイルム株式会社 | ガラス及びガラスの製造方法並びに光学素子 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW268913B (ja) * | 1993-08-30 | 1996-01-21 | Mitsubishi Gas Chemical Co | |
| US6015765A (en) | 1997-12-24 | 2000-01-18 | The United States Of America As Represented By The Secretary Of The Navy | Rare earth soluble telluride glasses |
| JP6269075B2 (ja) * | 2014-01-09 | 2018-01-31 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| CN104402220B (zh) * | 2014-11-10 | 2017-02-22 | 湖北新华光信息材料有限公司 | 一种硫系光学玻璃 |
| JP7058825B2 (ja) * | 2018-02-28 | 2022-04-25 | 日本電気硝子株式会社 | 赤外線透過ガラス |
-
2020
- 2020-02-21 JP JP2021502220A patent/JP7574794B2/ja active Active
- 2020-02-21 US US17/430,413 patent/US12515983B2/en active Active
- 2020-02-21 EP EP20763186.2A patent/EP3932883B1/en active Active
- 2020-02-21 CN CN202080009024.7A patent/CN113302164B/zh active Active
- 2020-02-21 WO PCT/JP2020/007218 patent/WO2020175403A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1642870A1 (fr) | 2004-09-09 | 2006-04-05 | Umicore | Verres de chalcogénures à base de Te pour transmission dans l'infrarouge moyen et lointain |
| WO2017086227A1 (ja) * | 2015-11-20 | 2017-05-26 | 旭硝子株式会社 | 光学ガラス |
| JP2017114733A (ja) * | 2015-12-25 | 2017-06-29 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| JP2017124952A (ja) * | 2016-01-14 | 2017-07-20 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| WO2017168939A1 (ja) * | 2016-03-31 | 2017-10-05 | 富士フイルム株式会社 | ガラス及びガラスの製造方法並びに光学素子 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3932883A4 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023095900A1 (ja) * | 2021-11-29 | 2023-06-01 | 日本電気硝子株式会社 | 赤外線透過ガラス |
| CN115784611A (zh) * | 2022-11-17 | 2023-03-14 | 湖北新华光信息材料有限公司 | 硫系光学玻璃及其制备方法和光学元件 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3932883A4 (en) | 2022-12-07 |
| EP3932883B1 (en) | 2024-04-10 |
| US20220144687A1 (en) | 2022-05-12 |
| US12515983B2 (en) | 2026-01-06 |
| JP7574794B2 (ja) | 2024-10-29 |
| JPWO2020175403A1 (ja) | 2020-09-03 |
| CN113302164B (zh) | 2023-08-01 |
| EP3932883A1 (en) | 2022-01-05 |
| CN113302164A (zh) | 2021-08-24 |
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