A blue light protection multilayer optical film

An optical film and blue light technology, which is applied in optics, optical components, instruments, etc., can solve the problems of blue light protection, inability to effectively block the blue light LED radiation spectrum, etc.

Active Publication Date: 2022-07-15
瑞之路(厦门)眼镜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned problems in the prior art that cannot effectively block the radiation spectrum of blue light LEDs to achieve blue light protection and may affect the lens transmission color balance function, etc.

Method used

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  • A blue light protection multilayer optical film
  • A blue light protection multilayer optical film
  • A blue light protection multilayer optical film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The blue light protection multilayer optical film proposed in this embodiment includes a substrate on which a high-refractive-index film layer made of a high-refractive-index material and a low-refractive-index film layer made of a low-refractive index material are provided. figure 1 This is a schematic diagram of the structure of the blue light protection multilayer optical film of the present embodiment, the film layers in the figure are only a schematic diagram of the number of layers, and do not represent the actual thickness of the film layers.

[0036] The substrate of this embodiment adopts PC lens (polycarbonate), which has the advantages of excellent impact resistance, high refractive index, light specific gravity and 100% UV protection. Of course, as required, the substrate can also be made of polyethylene terephthalate (PET), triacetate cellulose (TAC), polymethyl methacrylate (PMMA), polycarbonate / polymethyl methacrylate Composite (PC / PMMA), Polyimide (PI), ...

Embodiment 2

[0054] The blue light protection multilayer optical film proposed in this embodiment includes a substrate on which a high-refractive-index film layer made of a high-refractive-index material and a low-refractive-index film layer made of a low-refractive index material are provided. image 3 It is a schematic structural diagram of the blue light protection multilayer optical film of this embodiment, wherein 201 represents a symmetrical film layer, and the film layers in the figure are only a schematic diagram of the number of layers, and do not represent the actual thickness of the film layer.

[0055] The substrate of this embodiment adopts PC lens (polycarbonate), which has the advantages of excellent impact resistance, high refractive index, light specific gravity and 100% UV protection. Of course, as required, the substrate can also be made of polyethylene terephthalate (PET), triacetate cellulose (TAC), polymethyl methacrylate (PMMA), polycarbonate / polymethyl methacrylate ...

Embodiment 3

[0072] The blue light protection multilayer optical film proposed in this embodiment includes a substrate on which a core film stack and auxiliary film layers are arranged on both sides of the core film stack. The core film stack is formed by alternately stacking high-refractive-index film layers with different refractive indices, and the auxiliary film layers are formed by alternately stacking low-refractive-index film layers and high-refractive-index film layers in turn. In this embodiment, the core film stack is formed by alternately stacking high-refractive-index film layers with different refractive indices, and the auxiliary film layers are formed by alternately stacking low-refractive-index film layers and high-refractive-index film layers in turn. image 3 It is a schematic structural diagram of the blue light protection multilayer optical film of this embodiment, wherein 201 represents an auxiliary film layer, and the film layer in the figure is only a schematic diagra...

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Abstract

The invention discloses a blue light protection multilayer optical film. The optical film comprises a base, a low-refractive-index film layer and a high-refractive-index film layer arranged above the base. The optical film satisfies the center wavelength of 450 nm and the spectral half-width within the range of 50 nm. To achieve narrow-band blue light filtering and the following conditions: the transmittance range in the 400nm-440nm band is 75%-90%; the transmittance in the 440nm-460mm band is less than or equal to 75%; the transmittance in the 460nm-500mm band is greater than or equal to 80%; The transmittance in the 500nm‑780mm band is greater than or equal to 95%. The color balance compensation blue light blocking optical film prepared by alternating deposition of high refractive index material film and low refractive material film ensures the high transmittance of the remaining visible light band in the broad band, and reduces the color shift of the system due to blue light blocking. , chromatic aberration problem, improve the wearing comfort of users, can effectively relieve visual fatigue, protect the retina, and improve the clarity and authenticity of vision.

Description

technical field [0001] The invention relates to the field of optical films, in particular to a blue light protection multilayer optical film. Background technique [0002] Blue light is an important part of natural light, and blue light hazard refers to retinal damage caused by photochemical action caused by radiation with wavelengths between 400 and 500 nm. Compared with other wavelengths of radiation, blue light radiation has a shorter wavelength, so the energy distribution is higher, which is more harmful to the human eye. With the awakening of consumers' awareness of "blue light protection", blue light protection has attracted the attention of consumers. [0003] In 2017, Tsz Wing Leung et al. (see PLoS One.12(1).2017) indicated that blue light (approximately 430 m) has phototoxic effects on human eye health, and especially the retina. Laboratory evidence from Sparrow at Columbia University suggests that blue light-induced RPE cell death may be reduced by up to 80% if ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G02B5/28
CPCG02B5/285
Inventor周贤建沈凌君
Owner瑞之路(厦门)眼镜科技有限公司