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Optical component mold and method of manufacturing optical component using the same

A technology for optical components and molding molds, applied in the direction of optical components, optical components, optics, etc., can solve problems such as troubles and reduced manufacturing efficiency, and achieve the effects of preventing deterioration, prolonging life, and improving mold release

Inactive Publication Date: 2005-02-16
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation of applying a release agent to the surface of the nickel electroforming mold is cumbersome, and since the release agent must be applied after every few injections, manufacturing efficiency is reduced

Method used

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  • Optical component mold and method of manufacturing optical component using the same
  • Optical component mold and method of manufacturing optical component using the same
  • Optical component mold and method of manufacturing optical component using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] made with Figure 4 to Figure 5 The same anti-reflective layer forming mold. The micro-concave-convex formation surface of the master mold placed on the produced antireflection layer molding die had a concave portion pitch of 0.22 μm and an aspect ratio of 1.2. Furthermore, as a material of the cover layer covering the micro-concave-convex formation surface of the master mold, an inclined FDLC layer was used. The thickness of the sloped FDLC layer is 30 nm. Moreover, the surface free energy of the sloped FDLC layer is 3.12 μJ / cm 2 (31.2erg / cm 2 ). Next, the prepared antireflection layer forming mold was installed in an injection molding machine, and the melted antireflection layer material, that is, Aiton (trade name, heat-resistant transparent resin for optics) manufactured by JSR Co., Ltd. was injected from the injection port. And after forming a resin injection molded product, the anti-reflection layer is obtained by demolding. The obtained anti-reflection laye...

Embodiment 2

[0087] made with Figure 4 to Figure 5 The same anti-reflective layer forming mold. The micro-concave-convex formation surface of the master mold disposed on the produced antireflection layer molding die had a concave-part pitch of 0.25 μm and an aspect ratio of 1.3. In addition, the material of the coating layer covering the micro-concave-convex formation surface of the master mold was AY43-158 (trade name, silane compound containing a fluorine structure) manufactured by Toray Corporation. The covering layer has a thickness of 10 nm. Moreover, the surface free energy of the covering layer is 1.6 μJ / cm 2(16.0erg / cm 2 ).

[0088] Next, the prepared antireflection layer molding die was installed in an injection molding machine, and the melted antireflection layer material, that is, Aiton (trade name) manufactured by JSR Co., Ltd. was injected from the injection port to form a resin injection molded product. The anti-reflection layer is obtained by stripping the film. The o...

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Abstract

The resin optical component mold includes a first mold and a second mold for defining a cavity for molding a resin optical component having a minutely concavo-convex shaped surface, on which a plurality of minute concave or convex portions in units of submicrons is formed, by injection molding light transmitting resin. A master mold 36 formed of an inorganic oxide layer having a minutely concavo-convex shaped surface 36a, on which a concavo-convex shape complementary to the concavo-convex shape formed on the minutely concavo-convex shaped surface of the resin optical component is formed, is provided on the internal surface of the first mold.

Description

technical field [0001] The present invention relates to a molding die for a resin optical component formed with a plurality of submicron-order minute recesses or protrusions, and a method for manufacturing the aforementioned resin optical component using the molding die. Background technique [0002] Examples of the resin optical component formed with a plurality of submicron-order minute recesses or protrusions include, for example, a light guide plate or an antireflection layer of an illuminating device called a front light equipped in front of a reflective liquid crystal panel. [0003] Figure 6 It is a cross-sectional view showing a schematic configuration of a liquid crystal display device provided with a front light equipped with a light guide plate manufactured by a conventional manufacturing method and an antireflection layer. The liquid crystal display device 100 shown in the figure is composed of a liquid crystal panel 120 and a front light 110 disposed on the fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/56B29C33/60B29C45/37B29D11/00F21V8/00G02B6/00
CPCG02B6/0053B29C33/60B29C33/565B29K2907/02B29K2907/04B29L2011/00B29C45/37G02B6/0065G02B6/0038G02B6/0036B29C45/372B29D11/00278B29K2707/045
Inventor 石高良彦千叶秀典千田隆之福田哲也
Owner ALPS ALPINE CO LTD