An anti-interference composite optical polyester film

Abstract

An anti-interference composite optical polyester film comprises a polyester substrate layer, on which an optical filter coating is coated; the optical filter coating is coated by mixing bacteriorhodopsin in a purple film with a PVA aqueous solution, stirring evenly to obtain a uniform mixed solution, coating the mixed solution evenly on the polyester substrate layer, and naturally drying at 2°C-5°C.

Description

Technical Field

[0001] The invention relates to an optical polyester film. Background Art

[0002] Bacteriorhodopsin (BR) in the purple membrane has high stability and excellent photochemical properties and is considered to be the most promising photosensitive protein. Bacteriorhodopsin materials are a type of excellent bio-optical and photonic materials formed by long-term evolution in nature. They have excellent properties such as high nonlinear optical properties, high stability, and low price. As a biomaterial, BR has incomparable properties that other natural and synthetic materials cannot match. It can exist in the body of halophilic bacteria and can also be assembled into other artificial membrane systems and maintained.

[0003] The photocycle and proton pump functions of BR molecules convert light energy into electrochemical energy through colored proteins containing retinal chromophores. The light transmission in the BR film has saturated absorption characteristics. The threshold intensity of yellow light is modulated by the intensity of purple light and increases with the increase of purple light intensity. It can reduce the noise of external light pollution and form a good optical filter layer.

[0004] BR molecules have excellent photochromic properties, a wide inter-state absorption band shift (absorption peak shift is 160nm), and can repeatedly perform accurate state operations. BR is accompanied by changes in refractive index and absorption coefficient during the light cycle. BR molecules also have a high two-photon absorption cross-section and high nonlinear optical effect. Since BR absorbs light energy to cause rapid charge separation of chromophores and subsequent proton movement within protein molecules, inducing induced electromotive force at both ends of the charge or generating displacement current in the external circuit, BR molecules also have a photoelectric effect. The excellent properties of the BR molecule make it suitable for a variety of optical performance application scenarios, and its strong anti-light interference performance can filter out excess interference bands.

[0005] As the substrate of optical film, the performance of polyester film determines the basic characteristics of optical film. The anti-interference performance of existing optical polyester film needs to be improved. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies of the optical polyester film in the prior art, the present invention provides an anti-interference composite optical polyester film.

[0007] The technical solution of the present invention to solve the technical problem is: an anti-interference composite optical polyester film, comprising a polyester substrate layer, on which an optical filter coating is coated; The coating method of the optical filter coating is as follows: bacteriorhodopsin in the purple film and the PVA aqueous solution are mixed, stirred evenly to obtain a uniform mixed solution, the mixed solution is evenly coated on the polyester substrate layer, and naturally air-dried at 2°C-5°C.

[0008] Preferably, the polyester substrate layer is PET.

[0009] Preferably, in the PVA aqueous solution, the mass percentage concentration of PVA is 10%.

[0010] The beneficial effects of the present invention are as follows: the present invention applies BR molecules to polyester film, utilizes the strong anti-light interference performance of BR molecules, improves the color loss variation that occurs when light passes through the polyester film, filters out unnecessary interference bands, and is applied to optical modules to greatly improve the color rendering performance of the module, and has strong anti-interference performance without affecting the transmittance. DETAILED DESCRIPTION

[0011] The present invention is further described in detail below in conjunction with specific implementation modes.

[0012] An anti-interference composite optical polyester film comprises a polyester substrate layer, on which an optical filtering coating is coated.

[0013] The coating method of the optical filter coating is as follows: bacteriorhodopsin in the purple film and the PVA aqueous solution are mixed, stirred evenly to obtain a uniform mixed solution, the mixed solution is evenly coated on the polyester substrate layer, and naturally air-dried at 2°C-5°C. PVA has good film-forming properties. The film formed after the solvent evaporates is colorless and transparent, strong, soft, and has good wear resistance. It does not change below 140°C, and PVA has no adverse effects on the molecular structure and optical properties of BR. Therefore, it is a better choice to select PVA (polyvinyl alcohol) as the film matrix of BR molecules. In the PVA aqueous solution, the mass percentage concentration of PVA is preferably 10%.

[0014] The polyester substrate layer is usually PET, but can also be made of other materials.

[0015] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0016] The above is an explanation of the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-interference composite optical polyester film, comprising a polyester substrate layer, characterized in that: The polyester substrate layer is coated with an optical filter coating; The coating method of the optical filter coating is as follows: bacteriorhodopsin in the purple film and the PVA aqueous solution are mixed, stirred evenly to obtain a uniform mixed solution, the mixed solution is evenly coated on the polyester substrate layer, and naturally air-dried at 2°C-5°C.

2. The anti-interference composite optical polyester film according to claim 1, characterized in that: The polyester substrate layer is PET.

3. The anti-interference composite optical polyester film according to claim 1, characterized in that: In the PVA aqueous solution, the mass percentage concentration of PVA is 10%.