Optical film, and preparation method

An optical film and manufacturing method technology, applied in optics, optical components, instruments, etc., can solve problems such as visual obstruction, high water absorption and moisture permeability, and unusable optical films.

CN1959440AInactive Publication Date: 2007-05-09OPTIMAX TECHNOLOGY CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2007-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for preparing optical film includes mixing PMMA mixture with solvent uniformly to form a wet film, heating said wet film to form an optical dried film, enabling to mix PMMA mixture in any ratio as per required property with solvent to form a mixed solution then carrying out heat treatment on mixed solution to obtain optical film.
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Description

technical field

[0001] The present invention relates to an optical film and a method for preparing the above optical film by mixing optical polymers, in particular to a PMMA (Polymethyl Methacrylate) optical film and a method for preparing the above PMMA optical film by solvent casting technology. Background technique

[0002] The base materials of traditional optical films are generally based on triacetate (TAC: triacetate), PC (polycarbonate), and COP. The typical TAC film can be further used as a protective and supporting film for the optical film. Therefore, in addition to the required optical properties, the general TAC film must also have a certain strength, and have the characteristics of high temperature resistance and humidity resistance. To meet the use requirements of optical film, or to provide the effect of protecting the optical film composed of TAC film (refer to the following patents: JP4342202, TW499573, JP2000-324055, JP2001-235625, JP2003-195048, EP 1-2857...

Examples

Embodiment Construction

[0022] Here, the present invention will describe some embodiments in detail. It is to be noted, however, that the invention may be practiced in a wide range of other embodiments than those expressly described, and that the scope of the invention is not limited to the above-described embodiments, which should be determined by the scope of the claims. .

[0023] The optical film of the present invention comprises: at least one PMMA, PMMA or PMMA blending of substituted functional groups; and the above-mentioned PMMA, PMMA or PMMA blending of substituted functional groups can be uniformly mixed in any proportion according to the required properties In the above solvent, the above mixed solution forms the base material of the optical film after heat treatment.

[0024]Please refer to FIG. 1 , which shows the flow chart of the optical film of the present invention. The manufacture method of the optical film of the present invention, at first, select PMMA polymer and solvent in st...