Novel optical polymer composite film and manufacturing method and application thereof

Abstract

The invention discloses a novel optical polymer composite film and a manufacturing method and an application of the novel optical polymer composite film. An optical film covers the surface of a substrate, the substrate is made of polymer materials, and the optical film is formed by overlapping M unit films. Each unit film is formed by overlapping N optical film layers made of polymer materials, wherein N=2 or 3, each optical film layer has preset thickness, and every two adjacent optical film layers have different refraction indexes; the multiple optical film layers are overlapped on the surface of the substrate through pressing to form the novel optical polymer composite film, or a multi-layer optical film is manufactured in a multi-layer co-extrusion blow molding mode and pasted to the surface of the substrate in a covering mode to form the novel optical polymer composite film. According to actual application needs, through designing the number of the unit films in the optical film and the thicknesses, the refraction indexes and the distribution of all the optical film layers in each unit film, different optical characteristics of the optical film can be achieved. The novel optical polymer composite film is simple in technology, low in cost and capable of being widely applied to the field of agricultural planting.

Description

technical field [0001] The invention relates to the technical field of thin films, in particular to a novel optical polymer composite thin film and its manufacturing method and application. Background technique [0002] Optical film is to cover one or more layers of other materials on the surface of the base material to achieve the purpose of changing the transmittance and reflectance of predetermined wavelength band light. Generally speaking, the thickness of the film layer is on the order of the wavelength of light, and the effective wavelength band of the optical film can be changed by changing the thickness of the film layer. refer to figure 1 , for a film with a fixed thickness, different wavelength bands of light correspond to different optical paths (that is, phase differences), and their intensities after coherent superposition are different, which corresponds to different transmittance and reflectance. At present, optical thin films have been widely used in the fi...

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Problems solved by technology

[0006] However, metal films and dielectric films with relatively mature technologies are currently not suitable for promotion in the field of agricultural planting due to their relatively expensive prices, which limits the application of optical films in the field of agricultural planting.

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