Organic/inorganic composite material for optical applications and optical element

An inorganic composite material, organic technology, applied in the direction of optical components, optics, optical recording head, etc., can solve the problem of light transmittance reduction, achieve the effect of improved temperature dependence and excellent light transmittance

Inactive Publication Date: 2010-02-03
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case of an optical plastic material in which the above-mentioned fine particles are dispersed, in order to reduce |dn / dT|, it is necessary to mix a large amount of inorganic fine particles.

Method used

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  • Organic/inorganic composite material for optical applications and optical element
  • Organic/inorganic composite material for optical applications and optical element
  • Organic/inorganic composite material for optical applications and optical element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0171] "Preparation of Inorganic Microparticles"

[0172] "Preparation of Inorganic Microparticles A"

[0173] Inorganic fine particles A were prepared according to the steps shown below.

[0174] (dispersion process)

[0175] To 7.2 g of alumina (alumina C produced by Nippon Aerosil Co., Ltd., primary particle size 13 nm), 50 ml of pure water, 390 ml of special-grade ethanol (manufactured by Kanto Chemical Co., Ltd.), and 22 ml of 28% ammonia (manufactured by Kanto Chemical Co., Ltd.) were added to prepare a solution. To this solution, 0.72 g of tetraethoxysilane (LS-2430 manufactured by Shin-Etsu Chemical Co., Ltd.) was added, and Ultra Apex-Mill UAM-015 (manufactured by Kotobuki Kogyo Co., Ltd.) was used to disperse at a peripheral speed of 6 m / sec for 1 hour using 0.05 mm beads. . Then, 0.72 g of tetraethoxysilane (LS-2430 manufactured by Shin-Etsu Chemical Co., Ltd.) was further added to this dispersion liquid, and it stirred for 1 hour in the same manner as above.

...

Embodiment 2

[0214] "Production of Samples"

[0215] "Production of Sample 7"

[0216] Add 100 parts by mass of curable resin 3,4-epoxycyclohexenylmethyl-3',4'-epoxycyclohexene carboxylate (Seloxide 2021 manufactured by Daicel Chemical Industry Co., Ltd.) 100 parts by mass of methyl hexahydrophthalic anhydride (Epiclon B-650 manufactured by Dainippon Ink Chemical Industry Co., Ltd.), 2-ethyl-4-methylimidazole (manufactured by Shikoku Chemical Industry Co., Ltd. 2E4MZ) as a curing accelerator ) 3 parts by mass, 0.1 parts by mass of phenolic antioxidant (tetrakis(methylene-3-(3', 5'-di-tert-butyl-4'-hydroxyphenylpropionate) methane) as a stabilizer and Phosphorus stabilizer (2,2'-methylenebis(4,6-di-tert-butylphenyl)-2-ethylhexyl phosphite) 0.1 parts by mass, here, add the Inorganic microparticles A were mixed and dispersed using Labo Plastomill (manufactured by Toyo Seiki Seisakusho Co., Ltd., Labo Plastomill KF-6V). After the dispersion was decompressed and degassed, it was poured into a...

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PUM

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Abstract

Disclosed is an organic / inorganic composite material for optical applications which uses a resin that enables to produce an optical element at lower cost compared to a glass material, is sufficientlyimproved in temperature dependency of an optical property (refractive index) and has excellent permeability of a light having a shorter wavelength around 405 nm. Also disclosed is an optical element using the organic / inorganic composite material. In the organic / inorganic composite material, an inorganic microparticle comprising a composite oxide produced by complexing two or more types of metal oxides is dispersed in a resin in the form of a primary particle or an aggregation of several primary particles. The standard deviation s of the refractive index of the inorganic microparticle dispersedis 0.03 or less. The average primary particle size of the inorganic microparticle ranges from 1 to 50 nm inclusive.

Description

technical field [0001] The present invention relates to an organic-inorganic composite material preferably used as a lens, optical filter, grating, optical fiber, slab optical waveguide, etc., which has little change in refractive index due to temperature and excellent transparency, and an optical element using the material. Background technique [0002] Optical pickup devices are provided in information equipment such as players, recorders, and drives that read or record information on optical information recording media such as MOs, CDs, and DVDs (hereinafter also simply referred to as media). The optical pickup device has an optical element unit that irradiates light of a predetermined wavelength emitted from a light source onto a medium, and receives reflected light with a light receiving element. The optical element unit has a reflective layer or a light receiving element for converging the light optical components such as lenses. [0003] The optical element of the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04G11B7/135G11B7/254G11B7/2545
CPCG11B7/2545G02B1/04
Inventor 菊地雅子伊藤博人木村晃纯
Owner KONICA MINOLTA OPTO
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