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A kind of high refractive index optical glass and its preparation method

An optical glass and high refractive index technology, which is applied in the field of optical glass, can solve the problems of undisclosed anti-reflection coating, increase equipment erosion, and further improvement of refractive index performance, so as to achieve enhanced refractive index and light transmittance, and promote Effects of Glass Network Crosslinking, Enhanced Strength and Density

Active Publication Date: 2021-11-26
GUOGUANG OPTICAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong corrosion of tungsten oxide and zinc oxide used in this patent, it will increase the erosion of equipment during the preparation process; at the same time, the specific anti-reflection coating is not disclosed, and the refractive index and other properties need to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: (1) ultrasonically disperse bismuth nitrate in ethylene glycol, drop zinc nitrate solution; ultrasonically homogenize; place the obtained solution in a microwave reactor, set the power to 520W for 5 minutes, wash, filter and dry; Transfer to a high-temperature furnace and set the temperature at 550°C for 1.5 hours to obtain Zn-Bi 2 o 3 . (2) Mix tetrabutyl titanate, absolute ethanol, and hydrofluoric acid evenly, add copper nitrate and cerium nitrate, and stir continuously for 3.5 hours to obtain a mixed solution, which is placed in an autoclave with a temperature of 160°C , hydrothermal reaction for 24 hours, washed, filtered and dried; transferred to a high-temperature furnace, set the temperature at 450 ° C for 2.5 hours in a nitrogen atmosphere, and calcined for 2.5 hours to obtain Ce-Cu-TiO 2 . (3) Dissolve ammonium metatungstate in deionized water, add indium nitrate, stir to form a sol, add polyvinyl alcohol solution, add nitric acid dropwise, homogeni...

Embodiment 2

[0033] Step 1: (1) ultrasonically disperse bismuth nitrate in ethylene glycol, drop zinc nitrate solution; ultrasonically homogenize; place the obtained solution in a microwave reactor, set the power to 520W for 2 minutes, wash, filter and dry; Transfer to a high-temperature furnace and set the temperature at 500°C for 1 hour to obtain Zn-Bi 2 o 3 . (2) Mix tetrabutyl titanate, absolute ethanol, and hydrofluoric acid evenly, add copper nitrate and cerium nitrate, and stir continuously for 3 hours to obtain a mixed solution, which is placed in a high-pressure reactor and set at a temperature of 160°C , hydrothermal reaction for 24 hours, washed, filtered and dried; transferred to a high-temperature furnace, set the temperature at 400 ° C for 2 to 3 hours in a nitrogen atmosphere, and obtained Ce-Cu-TiO 2 . (3) Dissolve ammonium metatungstate in deionized water, add indium nitrate, stir to form a sol, add polyvinyl alcohol solution, add nitric acid dropwise, homogenize; lyoph...

Embodiment 3

[0038] Step 1: (1) ultrasonically disperse bismuth nitrate in ethylene glycol, drop zinc nitrate solution; ultrasonically homogenize; place the obtained solution in a microwave reactor, set the power to 520W for 6 minutes, wash, filter and dry; Transfer to a high-temperature furnace and set the temperature at 600°C for 2 hours to obtain Zn-Bi 2 o 3 . (2) Mix tetrabutyl titanate, absolute ethanol, and hydrofluoric acid evenly, add copper nitrate and cerium nitrate, and stir continuously for 4 hours to obtain a mixed solution, which is placed in a high-pressure reactor and set at a temperature of 160°C , hydrothermal reaction for 24 hours, washed, filtered and dried; transferred to a high-temperature furnace, set the temperature at 500 ° C for 3 hours in a nitrogen atmosphere, and calcined for 3 hours to obtain Ce-Cu-TiO 2 . (3) Dissolve ammonium metatungstate in deionized water, add indium nitrate, stir to form a sol, add polyvinyl alcohol solution, add nitric acid dropwise,...

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PUM

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Abstract

The invention discloses a high refractive index optical glass and a preparation method thereof. The high refractive index optical glass includes base glass and anti-reflection coating; the raw material of the base glass contains In-W composite nanoparticles; the mass ratio of the In-W composite nanoparticles is (0.5~0.7):1 WO 3 with In 2 o 3 pre-doped. Beneficial effect: using WO 3 and In 2 o 3 Pre-doping suppresses the aggressiveness of single metal oxides, and utilizes the dipole interaction between two metals to restructure the light absorption bandgap, further enhancing the refractive index and light transmittance of optical glass, and reducing the WO 3 and In 2 o 3 The amount of two metals also further enhances the corrosion resistance of the glass; and utilizes Ce‑Cu‑TiO 2 The medium metal effect induces the formation of high-refraction, low-dispersion high-transmittance bismuth silicate crystals, which further enhances the performance and quality of the glass.

Description

technical field [0001] The invention relates to the technical field of optical glass, in particular to a high refractive index optical glass and a preparation method thereof. Background technique [0002] Optical glass is a kind of glass material that transmits light through refraction, reflection and transmission, with the key technologies of refractive index, Abbe number and transmittance. It is used to manufacture lenses, prisms, mirrors, windows, etc., and is widely used in optical instruments such as cameras and microscopes. Among them, high refractive index and dispersion determine the basic performance of optical glass. At present, because the higher the refractive index, the thinner and lighter the optical glass, the better the light transmittance, so the pursuit of optical glass with a higher refractive index. However, under normal circumstances, the refractive index is inversely proportional to the dispersion, and the increase of the refractive index will lead to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/068
CPCC03C3/068
Inventor 沈杰沈强国
Owner GUOGUANG OPTICAL GLASS CO LTD
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