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Optical element molding method based on graphene-like electrothermal film

An optical element, graphene technology, applied in optical elements, glass molding, glass re-molding and other directions, can solve the problems of high energy consumption, long thermal cycle time, low production efficiency, etc., to prevent adhesion, high optical precision , the effect of fast heating

Active Publication Date: 2019-02-26
THE HONG KONG POLYTECHNIC UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that, in view of the conventional compression molding method that uses infrared heating to heat the mold and the workpiece as a whole, a large amount of energy is consumed during the heating process, and the thermal cycle time is too long and the production efficiency is low. Provide a method for molding optical components based on graphene-like electrothermal film with fast heating speed, high energy utilization rate and high precision

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  • Optical element molding method based on graphene-like electrothermal film
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  • Optical element molding method based on graphene-like electrothermal film

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[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] figure 1 It is a schematic flow chart of a preferred embodiment of the molding method for optical elements based on graphene-like electrothermal film of the present invention. combine figure 2 As shown, this kind of optical element molding method based on graphene-like electrothermal film includes the following steps: S1, the surface of the pressing surface 11 of the first pressing mold 1 is provided with a microstructure mold cavity 12, and in the microstructure mold cavity The surface of 12 is coated with a layer of graphene-like electrothermal film 2.

[0032] S2. The first compression mold 1 coated with the graphene-like electric heating film 2 is placed in a vacuum or nitrogen environment, and the graphen...

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Abstract

The invention provides an optical element molding method based on a graphene-like electrothermal film. The method includes the following steps: a surface of a pressing surface of a first pressing moldis provided with a microstructure mode cavity, and a surface of the microstructure mode cavity is plated with the graphene-like electrothermal film; the graphene-like electrothermal film is energizedand heated; the heat-generating graphene-like electrothermal film and an optical element blank material are contacted; after receiving the heat from the graphene-like electrothermal film by heat conduction and softening and deforming, the micro-structure mode cavity is filled with the optical element blank material; and the optical element blank material deformed according to the microstructure mode cavity is cooled and shaped by a cooling channel in a second pressing mold to form a lens. The method adopts the graphene-like electrothermal film for local heating, has high heating speed and high energy utilization rate, and the graphene-like electrothermal film has a low friction coefficient, can effectively prevent the adhesion between the blank material and the mold, and ensures the high-quality, high optical precision processing of the optical element surface.

Description

technical field [0001] The invention relates to the technical field of application of graphene-like materials, and more specifically, to a method for molding optical elements based on graphene-like electric heating films. Background technique [0002] In recent years, there has been an increasing demand for high-precision optical components, which are widely used in mobile phone and camera lenses, as well as optical detection systems. At present, the common optical element materials are mainly plastics (such as PMMA and PC) and glass, and the processing methods include barrel heating injection molding, precision grinding and precision molding. The barrel heating injection molding method is often used to process plastic optical components, but cannot process glass optical components with high glass transition temperature and low thermal conductivity. The precision grinding method can be used to process spherical glass optical components, but this method is time-consuming and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/00B29C43/02B29C43/36B29C43/52B29L11/00
CPCB29C43/02B29C43/36B29C43/52B29L2011/00C03B23/0013C03B23/0066C03B23/0093
Inventor 李荣彬陈增源李莉华吴文祥杨高
Owner THE HONG KONG POLYTECHNIC UNIV
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