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Resin material for optical purposes, and optical element utilizing the same

A resin material and optical technology, applied in the field of optical components, can solve the problems of difficult optical resin application, difficult particle surface treatment, etc., and achieve the effect of high temperature stability and high light transmittance

Inactive Publication Date: 2010-07-07
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this method can adjust the refractive index of the particles, it is difficult to treat the surface of the particles, and white turbidity can be observed, which is considered to be caused by layer separation between the resin and the particles.
In addition, foaming of particles can be observed at high temperature, making it difficult to apply as an optical resin

Method used

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  • Resin material for optical purposes, and optical element utilizing the same
  • Resin material for optical purposes, and optical element utilizing the same
  • Resin material for optical purposes, and optical element utilizing the same

Examples

Experimental program
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Effect test

preparation example Construction

[0075] (Manufacturing method of molded body for optical element)

[0076] The molding method of the optical element using the optical resin material of the present invention is not particularly limited, but a melt molding method is preferable in order to obtain a molded product with good characteristics such as low birefringence, mechanical strength, and dimensional accuracy.

[0077] The melt molding method includes, for example, press molding, extrusion molding, injection molding, etc., and injection molding is preferable from the viewpoint of moldability and productivity.

[0078] Forming conditions can be appropriately selected according to the purpose of use or the forming method. For example, it can impart proper fluidity to the resin during molding, prevent shrinkage or deformation of the molded product, prevent silver streaks (silver streaks) caused by thermal decomposition of the resin, and effectively inhibit the yellowing of the molded product. On the other hand, i...

Embodiment

[0105] Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited thereto. In addition, the expression of "%" is used in an Example, and it shows "mass %" unless otherwise specified.

[0106] Example

[0107] 〔Preparation of inorganic particles〕

[0108] (Preparation of Inorganic Microparticles 1)

[0109] Using the Nanocreator manufactured by Hosokawamicron Co., Ltd., the raw material gas flow and oxygen are introduced into a high-temperature atmosphere reaction space to react to prepare white fine powder inorganic particles. The raw material gas flow is made of polydimethylsiloxane and tetrakis(2 -Ethylhexyl) titanate is prepared according to the molar ratio of Si and Ti being 2.5:1.

[0110] Subsequently, the surface modification treatment is performed on the inorganic fine particles. Specifically, 300 g of methanol and 1 mol % nitric acid aqueous solution were added to 5 g of inorganic fine particles. ...

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PUM

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Abstract

Disclosed is a resin material for optical purposes, which has high light permeability and high refractive index stability against temperature variation. Also disclosed is an optical element utilizing the resin material. The resin material for optical purposes comprises a curable resin and an inorganic microparticle comprising two or more metal oxides having different refractive indexes and dispersed in the curable resin, wherein the inorganic microparticle has a refractive index distribution, has the surface treated with a surface-treating agent, and is at least partially modified with a surface-modifying agent having a polymerizable functional group, and wherein the refractive index of the curable resin after being cured (nh) and the refractive index of the inorganic microparticle (ng) meet the requirement represented by the formula (1) Ing-nhI<=0.07.

Description

technical field [0001] The present invention relates to an optical resin material suitable for use as a lens, an optical filter, a grating, an optical fiber, a planar optical waveguide, and the like, and an optical element using the optical resin material. Background technique [0002] Optical pickup devices are installed in information equipment such as players, recorders, and drives that read or record information on optical information recording media such as MO, CD, and DVD. The optical pick-up device has an optical element unit, and the optical element unit irradiates the light of a specific wavelength emitted by the light source onto the optical information recording medium, and receives the reflected light through the light receiving element, and the optical element unit has optical elements such as the following lens, Optical elements such as the lens are used to condense the light on the reflective layer or the light receiving element of the optical information reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F20/10C08F2/44C08L63/00G02B1/04
CPCG02B27/141G02B1/04G11B7/2538G02B27/146C08G59/24C08F2/44C08F20/18C08K9/06B82Y30/00C08K2201/002C08L33/10C08L23/18
Inventor 木村晃纯当间恭雄若松秀明
Owner KONICA MINOLTA OPTO