Micro-nanofilm layer

Abstract

This invention provides a micro-nanofilm layer. [Solution] The micro-nanofilm layer comprises a sequentially stacked base, an intermediate layer, and at least one nanofilm layer, the base being a lens made of APEL material, the intermediate layer being a silicon-aluminum mixture or silicon dioxide, and all the nanofilm layers having different refractive indices. Compared to the prior art, the micro-nanofilm layer of the present invention has ultra-low reflectivity, a loose structure, and effectively reduces mist generation.

Description

Technical Field

[0001] The present invention relates to the technical field of plating films on lenses, and particularly to micro-nano film layers.

Background Art

[0002] In recent years, customers' requirements for the quality of images taken with mobile phone cameras have been increasing, and the plating film technology on lenses has been advancing. Currently, some projects related to high-end mobile phones adopt a new plating film technology, namely the aluminum oxide hydrolysis process, which can obtain an ultra-low reflectivity (in the visible light wavelength band, the reflectivity reaches 0.1%), and there is a significant improvement in stray light and ghosting, improving the quality of the entire captured image. However, this process has a problem that mist occurs during actual shooting due to scattering characteristics. Especially for a single camera including multiple lenses, this problem is likely to become prominent after applying this process, with excessive scattering and poor shooting effects.

[0003] Therefore, it is necessary to provide a new micro-nano film layer to solve the above technical problems.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a micro-nano film layer with ultra-low reflectivity, a gentle structure, and reduced mist generation effect.

Means for Solving the Problems

[0005] To achieve the above object, the present invention provides a micro-nano film layer including a base, an intermediate layer, and at least one nano film layer sequentially laminated. The base is a lens made of APEL material, the intermediate layer is made of a silicon-aluminum mixture or silicon dioxide, and the refractive indices of all the nano film layers are different.

[0006] Preferably, the nanofilm layer includes a first film layer and a second film layer sequentially laminated on the intermediate layer.

[0007] Preferably, the intermediate layer has an equivalent refractive index of 1.46 and an equivalent thickness of 92 nm, the first film layer has an equivalent refractive index of 1.28 and an equivalent thickness of 104.6 nm, and the second film layer has an equivalent refractive index of 1.1 and an equivalent thickness of 120 nm.

[0008] Preferably, the reflectance of the nanofilm layer satisfies the conditions that Rmax is less than 0.1% and Rave is less than 0.1%. [Effects of the Invention]

[0009] Compared to conventional technology, the micro-nanofilm layer of the present invention sequentially stacks a base, an intermediate layer, and at least one nanofilm layer. The base is a lens made of APEL material, and the intermediate layer is made of a silicon-aluminum mixture or silicon dioxide. All nanofilm layers have different refractive indices, and the controllable nanofilm layers can form ultra-low reflectivity and low scattering. The structure of the nanocomposite film layer is flexible, which solves the problem of mist generation in actual photography. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram of the structure of a micro-nanofilm layer according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of the simulated refractive index of a micro-nanofilm layer according to an embodiment of the present invention. [Figure 3] This is a graph showing the wavelength and reflectance of a micro-nanofilm layer according to an embodiment of the present invention. [Figure 4] This is a schematic diagram illustrating the illuminance values ​​of actual scattered light when a micro-nanofilm layer according to an embodiment of the present invention is applied to a 6P lens. [Modes for carrying out the invention]

[0011] To more clearly explain the technical concepts of the embodiments of the present invention, the necessary drawings for the embodiments are briefly introduced below. Clearly, the drawings described below are only a few embodiments of the present invention, and those skilled in the art can obtain further drawings based on these drawings without any creative work.

[0012] The following describes the technical concepts in the embodiments of the present invention clearly and completely with reference to the drawings of the embodiments of the present invention. It is obvious that the embodiments described are only some, and not all, embodiments of the present invention. All other embodiments that a person skilled in the art could obtain without creative work based on the embodiments of the present invention are all within the scope of protection of the present invention.

[0013] As shown in Figures 1 to 4, embodiments of the present invention provide a micro-nanofilm layer 100 comprising a sequentially stacked base 1, an intermediate layer 2, and at least one nanofilm layer 3 (LSC film), wherein the base 1 is a lens made of APEL material, the intermediate layer 2 is made of a silicon-aluminum mixture or silicon dioxide, and all of the nanofilm layers 3 have different refractive indices. The controllable nanofilm layers 3 can form ultra-low reflectivity and low scattering, and the loose structure of the nanocomposite film layer can solve the problem of mist generation in actual photography.

[0014] Here, APEL material is a cycloolefin copolymer material realized by polymerization technology.

[0015] In this embodiment, the nanofilm layer 3 includes a first film layer L1 and a second film layer L2 that are sequentially laminated on the intermediate layer 2.

[0016] In this embodiment, the intermediate layer 2 has an equivalent refractive index of 1.46 and an equivalent thickness of 92 nm, the first film layer L1 has an equivalent refractive index of 1.28 and an equivalent thickness of 104.6 nm, and the second film layer L2 has an equivalent refractive index of 1.1 and an equivalent thickness of 120 nm.

[0017] In this micro-nanofilm layer technology (LSC film) with adjustable refractive index, the refractive index is adjusted by controlling the porosity of the LSC film layer. The refractive index of the first film layer L1 is high in correspondence with its low porosity, and the refractive index of the second film layer L2 is low in correspondence with its high porosity.

[0018] In this embodiment, the reflectance of the nanofilm layer 3 satisfies the conditions that Rmax is less than 0.1% and Rave is less than 0.1%.

[0019] Within the wavelength range of 380 nm to 900 nm, when the incident angle is 0°, the reflectance of nanofilm layer 3 satisfies the conditions of Rmax 0.06% and Rave 0.3%; when the incident angle is 45°, the reflectance of nanofilm layer 3 satisfies the conditions of Rmax 0.42% and Rave 0.17%; and when the incident angle is 60°, the reflectance of nanofilm layer 3 satisfies the conditions of Rmax 2.39% and Rave 1.19%.

[0020] In this embodiment, when applying the micro-nano film layer 100 to a 6P lens and comparing the effects of actual shooting, generally, a comparison of scattered mist generation and ghosting is performed. However, significant mist generation occurs when the ALD process is used, no significant mist generation occurs when the LSC process and the normal AR process are used, ghosting is strong when the normal AR process is used, ghosting is weak when the LSC process is used, and ghosting is weak when the ALD process is used. Figure 4 shows the illuminance values ​​of the scattered light in actual shooting with the 6P lens, and the illuminance value of the scattered light of the ALD process film layer is clearly higher than that of the AR process film layer and the LSC process film layer. In Figure 4, the vertical axis shows the illuminance value, where the illuminance value is 1 at the point closest to the light source and decreases as the distance from the light source increases. The horizontal axis is the relative distance from the light source, where it is set to 0 at the light source and set to 1 at the point furthest from the light source within the measurement range. In this embodiment, the furthest distance from the light source is 50 cm, but in other embodiments, it may be a different distance.

[0021] Compared with the prior art, in the micro-nano film layer of the present invention, a base, an intermediate layer and at least one nano film layer are sequentially laminated. The base is a lens made of APEL material, the intermediate layer is made of a silicon-aluminum mixture or silicon dioxide, and the refractive indices of all nano film layers are different. The controllable nano film layer can form an ultra-low reflectivity and low scattering, the structure of the nano composite film layer is gentle, and the problem of occurrence of actual writing mist can be solved.

[0022] The above are only embodiments of the present invention, and those skilled in the art can make improvements without departing from the idea of the present invention, but all of these belong to the protection scope of the present invention.

Explanation of Signs

[0023] 100 Micro-nano film layer, 1 Base, 2 Intermediate layer, 3 Nano film layer, L1 First film layer, L2 Second film layer

Claims

1. A micro-nanofilm layer, The aforementioned micro-nanofilm layer comprises a sequentially stacked base, an intermediate layer, and at least one nanofilm layer. The micro-nanofilm layer is characterized in that the base is a lens made of APEL material, the intermediate layer is made of a silicon-aluminum mixture or silicon dioxide, and all of the nanofilm layers have different refractive indices.

2. The micro-nanofilm layer according to claim 1, characterized in that the nanofilm layer includes a first film layer and a second film layer sequentially laminated on the intermediate layer.

3. The aforementioned intermediate layer has an equivalent refractive index of 1.46 and an equivalent thickness of 92 nm. The first film layer has an equivalent refractive index of 1.28 and an equivalent thickness of 104.6 nm. The micro-nanofilm layer according to claim 2, characterized in that the second film layer has an equivalent refractive index of 1.1 and an equivalent thickness of 120 nm.

4. The micro-nanofilm layer according to claim 1, characterized in that the reflectance of the nanofilm layer satisfies the conditions that Rmax is less than 0.1% and Rave is less than 0.1%.

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