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Manufacturing method of optical element

A technology of optical components and manufacturing methods, which can be applied to optical components, household appliances, and other household appliances, and can solve problems such as increased equipment costs

Inactive Publication Date: 2017-07-21
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Here, in the case of conventional injection molding, which is usually performed to mold optical elements, since molten thermoplastic resin is extruded into the cavity under high pressure, it is necessary to secure the rigidity of the mold so as to resist the pressure when the resin is filled. , and it is necessary to support the molds with high rigidity, but this also requires a large molding device, and there is a problem that the equipment cost increases

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  • Manufacturing method of optical element
  • Manufacturing method of optical element
  • Manufacturing method of optical element

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Embodiment Construction

[0032] As the "optical element" manufactured in the present invention, in addition to the optical element for imaging, there are also mirrors for projectors, optical elements for illumination, and the like. The optical element is not limited to a lens, but in the case of a lens, for example, it may be a flange-integrated type or a flange-separated type. In addition, it may be an integral lens having a plurality of optical axes. As the lens shape, various forms can be considered, including, for example, a convex lens, a concave lens, a thin-walled lens, a deflection-walled lens, a Fresnel lens, and a diffractive lens. As a lens to which the present invention can be applied, it is particularly preferable that the thickness of the thinnest part of the lens is 0.05 to 0.3 mm, and it is more preferable that the thickness of the thinnest part of the lens is 0.05 to 0.15 mm.

[0033] In the case of using a "carrier" for conveying molded optical elements, the carrier connects a pluralit...

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Abstract

A method of manufacturing optical elements capable of molding high-precision optical elements using energy-curable resins. The manufacturing method of this optical element includes: using the energy curable resin supplied between the first mold and the second mold, when the first mold and the second mold are clamped, the first positioning part and the second positioning part are fitted into each other. Together, thus, the process of positioning the molds; pair filling in the chamber surrounded by the first optical surface transfer surface and the first flange surface transfer surface and the second optical surface transfer surface and the second flange surface transfer surface The process of giving energy to the energy curable resin and curing the energy curable resin.

Description

Technical field [0001] The present invention relates to a method of manufacturing an optical element suitable for mass production of optical elements. Background technique [0002] Generally speaking, optical elements used in optical pickup devices, imaging devices, etc. need to have high accuracy. On the other hand, in recent years, competition with overseas manufacturers has intensified. In order to improve the competitiveness of products, it is required to further suppress costs. [0003] Here, in the case of conventional injection molding for molding optical elements, since the molten thermoplastic resin is extruded into the cavity under high pressure, it is necessary to ensure the rigidity of the mold to resist the pressure when the resin is filled. In addition, it is necessary to support the molds with high rigidity. However, this also requires a large-scale molding device, and there is a problem of increased equipment cost. In this regard, we are looking for a technology to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/30B29L11/00
CPCB29D11/005B29C43/021B29C43/08
Inventor 古田胜己藤本章弘清水直纪
Owner KONICA MINOLTA INC