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Resin composition for optical part and optical part

A technology of resin composition and optical components, applied in the directions of optical elements, optics, instruments, etc., can solve the problems of large optical axis deviation, disc recording and reproduction obstacles, etc.

Inactive Publication Date: 2004-10-13
LION IDEMITSU COMPOSITES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At such a high temperature, the optical system cover processed and molded using the conventional polyarylene sulfide resin composition has the problem that the optical axis shifts greatly due to temperature changes, so there is a problem that it hinders the recording and reproduction of the optical disc.

Method used

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  • Resin composition for optical part and optical part
  • Resin composition for optical part and optical part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2、 comparative example 1～2

[0045] [1] Materials used as each component

[0046] [A] Ingredients

[0047] [a1] Syndiotactic polystyrene [manufactured by Idemitsu Petrochemical Co., Ltd.: 130ZC]

[0048] 1) Melt index [300°C, 11.77N]: 13g / 10min

[0049] 2) Weight average molecular weight: 300000

[0050] 3) Molecular weight distribution: 2.5

[0051] 4) Melting peak temperature: 271°C

[0052] 5) Glass transition temperature: 99°C

[0053] 6) Density [25°C, atmospheric pressure]: 1.04

[0054] [a2] Polyphenylene sulfide [manufactured by Tosoh Corporation: #160]

[0055] 1) Cross-linked type

[0056] 2) Melt viscosity [300°C, 1000 seconds -1 ]: 1500 Poise

[0057] 3) Density [25°C, atmospheric pressure]: 1.35

[0058] (B) Ingredients

[0059] (b1) Glass fiber [manufactured by Asahi Glass Fiber Co., Ltd.: JAFT591]

[0060] 1) Fiber diameter: 10μm

[0061] 2) Density [25°C, atmospheric pressure]: 2.55

[0062] (b2) Calcium carbonate [manufactured by Shiraishi Industry Co., Ltd.: ホワイトン P30]

[00...

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Abstract

A resin composition for an optical part contains 30 to 70 vol % of (A) a syndiotactic polystyrene resin component or a resin composition component containing a syndiotactic polystyrene resin and a polyphenylene sulfide resin and (B) 70 to 30 vol % of an inorganic filler component, and an optical part is a molded product thereof and causes little shift in optical axis by a change in temperature.

Description

technical field [0001] The present invention relates to a resin composition for optical components and an optical component. More specifically, it relates to a resin composition for an optical component suitable for use as a molding material for an optical system cover of an optical pickup device, and an optical component processed and molded using the composition with less optical axis misalignment. technical background [0002] Conventionally, when recording or reproducing information on the recording surface of an optical disc such as a compact disc or a digital versatile disc, an optical system cover of an optical reading device or a laser printer, a copier, and especially a high-speed color copier is used to irradiate a light beam. Made of metal such as aluminum or zinc by die-casting. However, in recent years, there has been a strong demand for lightweighting of these machines, and a switch to synthetic resin products is being studied. For example, Japanese Patent Ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04C08K3/00C08K3/26C08K7/14C08K13/04C08L25/04C08L25/06C08L71/12C08L81/02C08L81/04
CPCC08K13/04C08K3/26C08L81/04C08L25/06C08L71/12C08K7/14C08K3/0033C08K3/013C08L2666/14C08L81/00C08L25/04C08K7/02G02B1/04
Inventor 奥山一广
Owner LION IDEMITSU COMPOSITES CO LTD
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