CN115925254A - High-refractive-index lanthanide optical glass and preparation method thereof - Google Patents
High-refractive-index lanthanide optical glass and preparation method thereof Download PDFInfo
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- CN115925254A CN115925254A CN202210598836.0A CN202210598836A CN115925254A CN 115925254 A CN115925254 A CN 115925254A CN 202210598836 A CN202210598836 A CN 202210598836A CN 115925254 A CN115925254 A CN 115925254A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention relates to high-refractive-index lanthanide optical glass and a preparation method thereof, wherein the high-refractive-index lanthanide optical glass has a refractive index of 1.93-1.95 and an Abbe number of 35-39, and comprises, by weight, 4-8 parts of silicon dioxide, 18-30 parts of boron trioxide, 20-30 parts of yttrium oxide, 4-8 parts of gadolinium oxide, 10-20 parts of niobium pentoxide, 5-15 parts of titanium dioxide, 8-15 parts of lanthanum trioxide and 5-20 parts of zirconium dioxide. The lanthanide optical glass prepared by the invention has the advantages of high refractive index, good light transmittance, small coloring and clear imaging, and improves the imaging quality of the whole optical system.
Description
Technical Field
The invention relates to the technical field of optical glass, in particular to lanthanide optical glass with high refractive index and a preparation method thereof.
Background
With the fierce competition and development of the market of photoelectric products, the manufacture of optical materials with high yield and low cost is the target of each optical material manufacturer, in addition, digital equipment at home and abroad is more and more popular at present, the quality requirements of people for the equipment are higher and higher, especially the requirements for optical lenses are higher and higher, in order to meet the requirements, a very high requirement is provided for the light transmittance of the optical glass, the optical glass in the prior art has defects in the aspects of refractive index, medium dispersion, small specific gravity and the like, in addition, the manufacturing process of the optical glass in the prior art is complex, and a large amount of labor is consumed in the manufacturing process.
Disclosure of Invention
Technical problem to be solved
Aiming at the problems in the prior art, the invention provides lanthanide optical glass with high refractive index and a preparation method thereof, so as to solve the technical problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the lanthanide optical glass with the high refractive index has the refractive index of 1.93-1.95 and the Abbe number of 35-39, and comprises, by weight, 4-8 parts of silicon dioxide, 18-30 parts of boron trioxide, 20-30 parts of yttrium oxide, 4-8 parts of gadolinium oxide, 10-20 parts of niobium pentoxide, 5-15 parts of titanium dioxide, 8-15 parts of lanthanum trioxide and 5-20 parts of zirconium dioxide.
Preferably, the lanthanide optical glass with high refractive index comprises, by weight, 5 parts of silicon dioxide, 16 parts of boron trioxide, 24 parts of yttrium oxide, 5 parts of gadolinium oxide, 20 parts of niobium pentoxide, 10 parts of titanium dioxide, 10 parts of lanthanum trioxide and 10 parts of zirconium dioxide.
The invention also discloses a preparation method of the lanthanide optical glass with high refractive index, which comprises the following steps:
the method comprises the following steps: preparing raw materials, screening the raw materials to remove impurities in the raw materials, weighing the raw materials, and selecting a proper proportion;
step two: pouring the raw materials into a heating container for heating, keeping the heat treatment temperature at 1400-1600 ℃ for 1.5-3 hours, then stopping heating, and simultaneously preheating a metal mold;
step three: cooling the heating material in the second step to 1200 ℃, then preserving heat for 2 hours, pouring the heating container out, pouring the heating container into a metal mold for casting molding without crystallization phenomenon, preserving heat of the heating material at the annealing temperature for 5-10 hours, then cooling and annealing at-4 to-7 ℃ per hour, cooling to room temperature, and taking out glass;
step four: and testing various parameters of the glass, and then packaging and sealing the glass.
In a further preferred mode, in the first step, equipment with double-layer filter screens is adopted, so that impurities with different sizes can be filtered, and purer raw materials can be obtained.
In a further preferred aspect, the heating container in the second step is a platinum crucible, and the platinum crucible is provided with a high-speed stirring mechanism for stirring at a high speed during heating.
In a further preferred embodiment, the post-annealing incubation time in step three is 8 hours.
In a further preferred embodiment, the cooling temperature in step three is-6 ℃.
In a further preferred embodiment, the heat treatment temperature in the second step is 1350 ℃.
In a further preferred mode, in the fourth step, various parameters of the glass are inspected by an optical inspection machine for multi-layer analysis, and the optical inspection machine is a device equipped with a plurality of inspection lenses, so as to further improve the inspection efficiency.
(III) advantageous effects
Compared with the prior art, the invention provides the lanthanide optical glass with high refractive index and the preparation method thereof, and the lanthanide optical glass has the following beneficial effects:
the lanthanide optical glass prepared by the invention has the advantages of high refractive index, good light transmission, small coloring and clear imaging, and improves the imaging quality of the whole optical system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1:
the lanthanide optical glass with the high refractive index has the refractive index of 1.93-1.95 and the Abbe number of 35-39, and comprises, by weight, 4-8 parts of silicon dioxide, 18-30 parts of boron trioxide, 20-30 parts of yttrium oxide, 4-8 parts of gadolinium oxide, 10-20 parts of niobium pentoxide, 5-15 parts of titanium dioxide, 8-15 parts of lanthanum trioxide and 5-20 parts of zirconium dioxide. .
In this embodiment, the high refractive index lanthanide optical glass includes, by weight, 5 parts of silicon dioxide, 16 parts of boron trioxide, 24 parts of yttrium oxide, 5 parts of gadolinium oxide, 20 parts of niobium pentoxide, 10 parts of titanium dioxide, 10 parts of lanthanum trioxide, and 10 parts of zirconium dioxide. This ratio is the preferred specific gravity in this embodiment.
Example 2:
the invention also comprises a preparation method of the lanthanide optical glass with high refractive index, which comprises the following steps:
the method comprises the following steps: preparing raw materials, screening the raw materials simultaneously, adopting equipment with a double-layer filter screen, and further filtering impurities with different sizes to obtain purer raw materials, filtering impurities in the raw materials, weighing the raw materials, and selecting a proper proportion, wherein the lanthanide optical glass with the high refractive index comprises the following components, by weight, 5 parts of silicon dioxide, 16 parts of boron trioxide, 24 parts of yttrium trioxide, 5 parts of gadolinium oxide, 20 parts of niobium pentoxide, 10 parts of titanium dioxide, 10 parts of lanthanum trioxide and 10 parts of zirconium dioxide;
step two: pouring the raw materials into a heating container for heating, keeping the heat treatment temperature at 1400-1600 ℃ for 1.5-3 hours, then stopping heating, and simultaneously preheating a metal mold;
step three: cooling the heating material in the second step to 1200 ℃, then preserving heat for 2 hours, pouring the heating container out, pouring the heating container into a metal mold for casting molding without crystallization phenomenon, preserving heat of the heating material at the annealing temperature for 5-10 hours, then cooling and annealing at-4 to-7 ℃ per hour, cooling to room temperature, and taking out glass;
step four: and testing various parameters of the glass, and then packaging and sealing the glass.
Example 3:
the invention also comprises a preparation method of the lanthanide optical glass with high refractive index, which comprises the following steps:
the method comprises the following steps: preparing raw materials, screening the raw materials simultaneously, adopting equipment with a double-layer filter screen, and further filtering impurities with different sizes to obtain purer raw materials so as to filter impurities in the raw materials, weighing the raw materials, and selecting a proper proportion, wherein the lanthanide optical glass with the high refractive index comprises 4 parts by weight of silicon dioxide, 18 parts by weight of boron trioxide, 20 parts by weight of yttrium trioxide, 5 parts by weight of gadolinium oxide, 20 parts by weight of niobium pentoxide, 15 parts by weight of titanium dioxide, 12 parts by weight of lanthanum trioxide and 10 parts by weight of zirconium dioxide;
step two: pouring all raw materials into a heating container for heating, wherein the heating container is a platinum crucible, the heat treatment temperature is 1300 ℃, the holding time is 2 hours, then stopping heating, and simultaneously preheating a metal mold;
step three: cooling the heating material in the step two to 1200 ℃, then preserving heat for 2 hours, pouring the heating container out, pouring the heating container into a metal mold for casting molding without crystallization phenomenon, preserving heat of the heating material at the annealing temperature for 6 hours, then cooling and annealing at-4 ℃ per hour, cooling to room temperature, and taking out glass;
step four: each parameter of the glass is tested, then the glass is packaged and stored, each parameter of the glass is checked through an optical checking machine of multi-layer analysis, and the optical checking machine selects equipment with a plurality of detection lenses, so that the detection efficiency is further improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The lanthanide optical glass with the high refractive index is characterized in that the lanthanide optical glass with the high refractive index has the refractive index of 1.93-1.95 and the Abbe number of 35-39, and comprises, by weight, 4-8 parts of silicon dioxide, 18-30 parts of boron trioxide, 20-30 parts of yttrium oxide, 4-8 parts of gadolinium oxide, 10-20 parts of niobium pentoxide, 5-15 parts of titanium dioxide, 8-15 parts of lanthanum trioxide and 5-20 parts of zirconium dioxide.
2. A high refractive index lanthanide optical glass as defined in claim 1, wherein: the lanthanide optical glass with the high refractive index comprises, by weight, 5 parts of silicon dioxide, 16 parts of boron trioxide, 24 parts of yttrium oxide, 5 parts of gadolinium oxide, 20 parts of niobium pentoxide, 10 parts of titanium dioxide, 10 parts of lanthanum trioxide and 10 parts of zirconium dioxide.
3. The invention also provides a preparation method of the lanthanide optical glass with high refractive index, which is characterized by comprising the following steps:
the method comprises the following steps: preparing raw materials, screening the raw materials to remove impurities in the raw materials, weighing the raw materials, and selecting a proper proportion;
step two: pouring the raw materials into a heating container for heating, keeping the heat treatment temperature at 1400-1600 ℃ for 1.5-3 hours, then stopping heating, and simultaneously preheating a metal mold;
step three: cooling the heating material in the second step to 1200 ℃, then preserving heat for 2 hours, pouring the heating container out, pouring the heating container into a metal mold for casting molding, preserving heat for 5-10 hours at the annealing temperature of the heating material, then cooling and annealing at minus 4-7 ℃ per hour, cooling to room temperature, and taking out glass;
step four: and testing various parameters of the glass, and then packaging and sealing the glass.
4. The method for producing a high-refractivity lanthanum optical glass according to claim 3, wherein: in the first step, equipment with double-layer filter screens is adopted, so that impurities with different sizes can be filtered, and purer raw materials can be obtained.
5. The method for producing a high-refractivity lanthanum optical glass according to claim 3, wherein: and the heating container in the second step is a platinum crucible, and a high-speed stirring mechanism is arranged on the platinum crucible and is used for stirring the platinum crucible at a high speed during heating.
6. The method for producing a high-refractivity lanthanum optical glass according to claim 3, wherein: and the heat preservation time after annealing in the third step is 8 hours.
7. The method for producing a high-refractivity lanthanum optical glass according to claim 3, wherein: the temperature of the third step is-6 ℃.
8. The method for producing a high-refractive-index lanthanide optical glass as defined in claim 3, wherein: the heat treatment temperature in the second step is 1350 ℃.
9. The method for producing a high-refractivity lanthanum optical glass according to claim 3, wherein: in the fourth step, various parameters of the glass are checked through an optical inspection machine for multilayer analysis, and the optical inspection machine selects equipment provided with a plurality of detection lenses, so that the detection efficiency is further improved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210598836.0A CN115925254A (en) | 2022-05-30 | 2022-05-30 | High-refractive-index lanthanide optical glass and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210598836.0A CN115925254A (en) | 2022-05-30 | 2022-05-30 | High-refractive-index lanthanide optical glass and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712530A (en) * | 2008-09-30 | 2010-05-26 | Hoya株式会社 | Optical glass |
| CN102428045A (en) * | 2009-05-20 | 2012-04-25 | Hoya株式会社 | Glass material for press forming, method for manufacturing glass optical element using same, and glass optical element |
| CN111453989A (en) * | 2019-01-22 | 2020-07-28 | 成都光明光电股份有限公司 | Lanthanide optical glass and glass preform, element and instrument thereof |
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- 2022-05-30 CN CN202210598836.0A patent/CN115925254A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712530A (en) * | 2008-09-30 | 2010-05-26 | Hoya株式会社 | Optical glass |
| CN102428045A (en) * | 2009-05-20 | 2012-04-25 | Hoya株式会社 | Glass material for press forming, method for manufacturing glass optical element using same, and glass optical element |
| CN111453989A (en) * | 2019-01-22 | 2020-07-28 | 成都光明光电股份有限公司 | Lanthanide optical glass and glass preform, element and instrument thereof |
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