CN111781749A

CN111781749A - Light conversion film, preparation method, blue light prevention glasses, lighting and display equipment

Info

Publication number: CN111781749A
Application number: CN202010741089.2A
Authority: CN
Inventors: 骆意勇; 龙能文; 管子豪
Original assignee: Hefei Funa Technology Co ltd
Current assignee: Hefei Funa Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-10-16

Abstract

The invention discloses a light conversion film, a preparation method thereof, blue light prevention glasses and lighting and display equipment, wherein the light conversion film comprises a light conversion material and is used for converting incident light into emergent light; wherein: the wavelength of the incident light is shorter than the first wavelength, and the wavelength of the emergent light is in a second wavelength range; the length of the first wavelength is 380-500 nm, and the second wavelength range belongs to a subset of the first wavelength to 500 nm; the invention converts high-energy short-wave blue light into long-wave blue light with relatively low energy, has less light loss and smaller overall brightness attenuation of the blue light, thereby being applied to glasses, lighting devices or display equipment to obtain good visual effect under the condition of effectively preventing the short-wave blue light from damaging eyes.

Description

Light conversion film, preparation method, blue light prevention glasses, lighting and display equipment

Technical Field

The invention belongs to optical thin film materials, and particularly relates to a light conversion film, a preparation method thereof, blue light prevention glasses and lighting and display equipment.

Background

In modern society, various display devices such as televisions, computers, PADs, mobile phones and the like, and various lighting devices such as automobile lamps, advertising boards, indoor lighting lamps and the like greatly promote the development of human society. The development work of the blue light LED is not sufficient, and the white light LED prepared by combining the blue light LED and yellow fluorescent powder can enable people to obtain high-quality white light illumination at night, or can be used as a white light backlight source of LCD display equipment, so that gorgeous colors are displayed, meanwhile, the brightness of the blue light LED is improved, and the contrast of a display screen can be remarkably increased.

However, modern medical research finds that the wavelength of blue light (380-500 nm) is short, short-wave blue light has extremely high energy and can penetrate through the crystalline lens to reach the macula part of the retina, and the retinal pigment epithelium and choroid absorb the blue light wave band below about 460nm to generate photochemical reaction, generate a large amount of free radicals with cytotoxicity, damage normal growth of cells, cause death of retinal pigment epithelium cells, and possibly cause vision loss and even blindness. The blue light LED as a display backlight or a lighting device, or the blue light emitted from the blue sub-pixel in the self-luminous OLED, which is currently popular, includes a short-wave blue light component in the wavelength range. The short-wave blue light environment has bad influence on the eyesight of teenagers and even adults.

The prior art measures against blue light are mainly the following two:

the blue light is absorbed, and by wearing the blue light-proof glasses, the blue light-absorbing material is added into the lens base material to absorb the short-wave blue light, so that the protection effect is realized;

and secondly, blue light is reflected, a special coating process is adopted to manufacture a blue light reflecting film, the blue light reflecting film can reflect the blue light, and the blue light reflecting film is commonly applied to automobile front windshield and can also be applied to light emitting surfaces of blue light prevention glasses, display screens and lighting equipment.

However, both of the above two types of measures achieve the blue light prevention effect at the expense of blue light, and for the display effect or the illumination device, absorption or reflection means light loss, resulting in reduction of illumination brightness, and the display effect is greatly reduced.

Disclosure of Invention

The invention aims to provide a light conversion film, a preparation method of the light conversion film, blue light prevention glasses, an illumination device and display equipment, so as to solve the defects in the prior art and realize the effect of protecting eyes under the condition of not losing visual effect.

The technical scheme adopted by the invention is as follows:

in a first aspect, an example of the present application provides a light conversion film comprising a light conversion material, the light conversion film for converting incident light into outgoing light; wherein: when the wavelength of the incident light is shorter than the first wavelength, the wavelength of the emergent light is in a second wavelength range; the length of the first wavelength is 380-500 nm, and the second wavelength range is a subset of the first wavelength to 500 nm.

Further, the light conversion material comprises one or a combination of several of quantum dots, rare earth fluorescent materials, organic small molecule luminescent materials and organic polymer luminescent materials.

Further, the quantum dots comprise one or more of the following combinations:

group II-VI compounds, group III-V compounds, group II-V compounds, group III-VI compounds, group IV-VI compounds, group I-III-VI compounds, group II-IV-VI compounds, group IV simple substances, and perovskites.

Further, the perovskite comprises an inorganic perovskite or an inorganic-organic hybrid perovskite;

the structural general formula of the inorganic perovskite is AMX3, wherein A is Cs + ions, M is divalent metal cations and comprises Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halogen anion, including Cl^－、Br^－、I^－；

The structural general formula of the organic-inorganic hybrid perovskite is BMX3, wherein B is organic amine cation and comprises CH₃(CH₂)_n－2NH₃ ⁺Or NH₃(CH₂)_nNH₃ ²⁺M is a divalent metal cation including Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halogen anion, including Cl^－、Br^－、I^－。

Further, the light conversion film further comprises a light conversion layer, and the light conversion material is located in the light conversion layer.

Further, the light conversion film further comprises a first base layer and a second base layer, and the first base layer, the light conversion layer and the second base layer are sequentially stacked.

Further, the first wavelength is 460 nm.

Further, the second wavelength range is 480 nm-500 nm.

In a second aspect, examples of the present application provide a method of manufacturing a light conversion film, including:

preparing the light conversion film containing a light conversion material; wherein: the light conversion film converts incident light into emergent light; when the wavelength of the incident light is shorter than the first wavelength, the wavelength of the emergent light is in a second wavelength range; the length of the first wavelength is 380-500 nm, and the second wavelength range is a subset of the first wavelength to 500 nm.

In a third aspect, examples of the present application provide a blue light prevention lens, wherein the above-described light conversion film is provided on at least one surface of a lens of blue light prevention glasses.

In a fourth aspect, examples of the present application provide a lighting device in which the above-described light conversion film is provided in a light exit direction of the lighting device.

In a fifth aspect, examples of the present application provide a display device in which the above-described light conversion film is provided in a light exit direction of the display device.

Compared with the prior art, the light conversion film provided by the invention can directly absorb or reflect blue incident light, can directly convert short-wave blue incident light below a certain wavelength (first wavelength) in a broad blue light range (380-.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of embodiment 2 of the present invention;

FIG. 3 is a schematic structural view of embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of an illumination device provided by the present invention;

FIG. 5 is a schematic diagram showing a comparison of spectra of a general illumination device before and after applying the light conversion film provided by the present invention;

fig. 6 is a schematic structural diagram of a display device provided by the present invention.

Detailed Description

The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Modern medical research finds that blue light in the visible spectrum has adverse effects on human eyes, and particularly, short-wave blue light in the visible spectrum can penetrate through crystalline lens to reach macula of retina, generate photochemical reaction, generate cytotoxic free radicals, destroy normal growth of cells, cause death of retinal pigment epithelial cells, and in severe cases, may cause vision loss and even blindness. However, in life, televisions, computers, mobile phones, and even lighting devices have a large amount of blue light components.

The measures for solving the problem in the prior art are mainly two, namely, the blue light component is reduced through an absorption effect, and the blue light component is reflected through a special film material, but any measure has larger light loss. How to reduce the invasion of the short-wave blue light to eyes and ensure certain visual effect is a very important research topic.

In view of the above, the present invention provides a light conversion film 100 for converting incident light into emergent light, wherein the light conversion film 100 contains a light conversion material, and the light conversion film 100 is used for protecting eyes and ensuring visual effect, wherein: the wavelength of the incident light is shorter than the first wavelength, and the wavelength of the emergent light is in a second wavelength range; the first wavelength has a length of 380-500 nm, and the second wavelength range belongs to a subset of the first wavelength to 500 nm.

In practical use of the light conversion film 100 of the present invention, light enters from either side of the light conversion film 100, and exits from the other side, and when the light passes through the light conversion film 100, electromagnetic waves with a wavelength of 380-500 nm or less are converted into electromagnetic waves with a wavelength of 500nm or more by the light conversion material therein.

Based on the technical scheme provided by the brand new thought, compared with the prior art that blue incident light is directly absorbed or reflected, the high-energy short-wave blue light can be directly converted into blue emergent light with the wavelength not less than the specific wavelength (first wavelength) in the broad blue light range (380-500 nm), compared with the prior art that blue light is lost to obtain the blue light prevention effect, high-energy short-wave blue light is converted into long-wave blue light with relatively low energy, light loss is less, and the overall brightness attenuation of the blue light is smaller, so that the high-energy short-wave blue light can be applied to glasses, lighting devices or display equipment to obtain good visual effect under the condition of effectively preventing the short-wave blue light from damaging eyes, and the high-energy short-wave blue light anti-reflection blue light has extremely high market application prospect and great commercial value.

Specifically, the light conversion material in the light conversion film 100 includes, but is not limited to, one or more of quantum dots, rare earth fluorescent material, organic small molecule light emitting material and organic polymer light emitting material, for example, a combination of quantum dots and organic small molecule light emitting material or a combination of quantum dots and rare earth.

The quantum dots can be selected from the following substances:

group II-VI compounds, group III-V compounds, group II-V compounds, group III-VI compounds, group IV-VI compounds, group I-III-VI compounds, group II-IV-VI compounds, group IV simple substance, perovskite.

For example, group II-VI compounds include, but are not limited to CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, PbS, PbSe, PbTe, and other binary, ternary, or quaternary II-VI compounds.

Wherein, the perovskite can be selected from the following substances:

doped or undoped inorganic perovskite type semiconductors, and/or organic-inorganic hybrid perovskite type semiconductors; in particular, the amount of the solvent to be used,

the structural general formula of the inorganic perovskite type semiconductor is AMX3, wherein A is Cs⁺Ion, M is a divalent metal cation, including but not limited to Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halide anion, including but not limited to Cl^－、Br^－、I^－；

The structural general formula of the organic-inorganic hybrid perovskite type semiconductor is BMX3, wherein B is organic amine cation including but not limited to CH₃(CH₂)_n－2NH₃ ⁺(n.gtoreq.2) or NH₃(CH₂)_nNH₃ ²⁺(n is not less than 2), M is a divalent metal cation including Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halogen anion, including Cl^－、Br^－、I^－. When n is 2, the inorganic metal halide octahedrons MX 64-are connected in a cospun mode, the metal cations M are positioned in the center of the halogen octahedrons, and the organic amine cations B are filled in the gaps among the octahedrons to form an infinitely extended three-dimensional structure; when n is more than 2, the inorganic metal halide octahedron MX 64-connected in a cospun mode extends in two-dimensional direction to form a layered structure, an organic amine cation bilayer (protonated monoamine) or an organic amine cation monolayer (protonated diamine) is inserted between layers, and the organic layer and the inorganic layer are overlapped with each other to form a stable two-dimensional layered structure; m is a divalent metal cation including, but not limited to, Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺(ii) a X is a halide anion, including but not limited to Cl^－、Br^－、I。

Wherein, the organic micromolecule material can be selected from the following substances:

oxadiazole and derivatives thereof, triazole and derivatives thereof, coumarin derivatives, pyrazoline derivatives, triphenylamine derivatives and xanthene derivatives.

Wherein the organic polymer luminescent material is polyphenyl, polyphenylene ethylene, polyphenylacetylene, polyfluorene, polythiophene, polycarbazole, polytriphenylamine, polypyrrole, polyporphyrin or derivatives of the materials.

Wherein, the rare earth fluorescent material can be selected from the following substances:

aluminate phosphor, silicate phosphor, phosphate phosphor, tungstate phosphor, molybdate phosphor, antimonate phosphor, nitride phosphor, or sulfide phosphor.

Further, to facilitate the disposition of the light conversion material in the light conversion film 100, the light conversion material is fabricated as a light conversion layer 200 applied in the light conversion film 100.

It should be noted that, in order to make the light conversion layer 200 from a light conversion material, it is generally necessary to provide an encapsulation material, that is, the light conversion layer 200 is made from the light conversion material after being encapsulated by the encapsulation material, or the light conversion layer 200 is made from the light conversion material after being mixed with the encapsulation material, and the combination form between the light conversion material and the encapsulation material may also have other ways, which are not limited herein.

Wherein, when quantum dot material was selected to the light conversion material, the encapsulating material can select transparent resin for use, and is specific, transparent resin can be thermosetting resin or ultraviolet curing resin, if: acrylic resins, polyester resins, polyurethane resins, epoxy resins, silicone resins, and the like; the mass ratio of the light conversion material to the transparent resin is 0.00001-0.2: 1.

in order to protect the light conversion layer 200, a base layer, such as a first base layer 300 and a second base layer 400, is usually further disposed in the light conversion film 100, and the light conversion layer 200 is disposed between the first base layer 300 and the second base layer 400, so as to form a reliable film structure, which plays a role of protecting the light conversion layer 200, and the first base layer 300 and the second base layer 400 should be transparent and non-reactive with the material of the light conversion layer 200, and isolate the light conversion layer 200 from the external environment.

The first and

second substrates

300 and 400 may be one of a mylar film, a polymethylmethacrylate film, a polycarbonate film, a cellulose triacetate film, a nylon film, a polyethylene film, a polypropylene film, or a polyvinyl chloride film.

It should be noted that the film layer structure of the light conversion film 100 is not limited to the above one, and other functional layers may be provided according to the functional requirements, for example, a base layer for providing an adhesion surface, which may be generally made of glass, plastic plate, or flexible transparent plate; the adhesive layer is used for improving the binding force between the functional layers and contains various types of glue; the adhesive sticker is used for providing adhesive stickers for adhering screens of other devices such as mobile phones or computers. The functional layers are arranged in a stacked mode according to different action effects.

Furthermore, the shape of the film structure is not limited to a pure plane structure, and according to the actual application scenario, for example, when the film structure is applied to an arc screen or a spherical light outlet cover, each film structure has a certain arc angle which can be used in cooperation when being designed.

Further, according to the light emitting characteristics of each device in actual practice and the action relationship between blue light and eyes observable in medicine, preferably, the first wavelength may be specifically set to 460nm, and the second wavelength range may be selected from 480-; further, the second wavelength range can be further reduced to 480-485 nm, so as to minimize the influence on the color purity of blue light. It should be noted that the above is not a limitation on the first wavelength and the second wavelength range, and in particular, the design of the first wavelength and the second wavelength range should be advanced according to the characteristics of the light source or the new medical research.

Above, in order to achieve a change in wavelength, for example setting the first wavelength from 480nm to 460nm, it is the properties of the specific material that need to be changed, and when the light conversion material is a quantum dot, this conversion can be achieved by changing the particle size of the quantum dot, for example, adjusting the particle size of the quantum dot from 2.8-3 nm to 2.6-2.8 nm.

For example, the light conversion material may be CdSe quantum dots, and the size of the CdSe quantum dots is limited to about 2.6nm, so that blue light with a wavelength of more than 480nm can be emitted.

The present invention also provides a method for manufacturing a light conversion film 100, comprising,

step 20, obtaining a first base layer 300;

step 40, arranging a light conversion layer 200 on the first base layer 300;

step 60, disposing a second base layer 400 on the light conversion layer 200;

wherein: the light conversion layer 200 contains a light conversion material, which converts incident light into outgoing light; the wavelength of the incident light is shorter than the first wavelength, and the wavelength of the emergent light is in a second wavelength range; the length of the first wavelength is 380-500 nm, and the second wavelength range is a subset of the first wavelength to 500 nm.

In the specific implementation process:

step 20, obtaining the first substrate 300, which may be directly selected from a suitable substrate material, such as one of a mylar film, a polymethylmethacrylate film, a polycarbonate film, a cellulose triacetate film, a nylon film, a polyethylene film, a polypropylene film, or a polyvinyl chloride film.

Step 40, disposing a light conversion layer 200 on the first base layer 300, specifically, the steps may be subdivided into:

step 402, preparing a light conversion layer material. The light conversion material is formed by uniformly mixing a light conversion material, such as quantum dots, with a transparent resin (such as acrylic resin), wherein the ratio of the quantum dots to the transparent resin is 1: 100, respectively;

step 404, spin-coating the light conversion material on the surface of the first base layer in a coating manner, and curing to form the light conversion layer 200;

step 60, disposing a second base layer 400 on the light conversion layer 200. The second base layer 400 is directly disposed on the surface of the light conversion layer 200 away from the first base layer 300, and finally, the light conversion film 100 is formed.

Example 1

The light conversion film 100 shown in fig. 1 has, from top to bottom, a first base layer 300 having a thickness of 10 μm, a light conversion layer 200 having a thickness of 10 μm, and a second base layer 400 having a thickness of 10 μm, respectively.

The light conversion material in the light conversion layer 200 of this embodiment is formed by mixing CdSe quantum dots and acrylic resin, the first base layer 300 is a mylar film, and the second base layer 400 is a mylar film.

Wherein the CdSe quantum dots are configured to absorb electromagnetic waves below 480nm and emit visible light with an emission peak at 500 nm.

Example 2

The light conversion film 100 as described in fig. 2 has, from top to bottom, a light influencing layer 500 having a thickness of 10 μm, a first base layer 300 having a thickness of 8 μm, a light conversion layer 200 having a thickness of 6 μm, and a second base layer 400 having a thickness of 8 μm, respectively.

The light conversion material in the light conversion layer 200 of this embodiment is formed by mixing InP quantum dots and polyester resin, the first base layer 300 is a polymethyl methacrylate film, and the second base layer 400 is a polymethyl methacrylate film. The light action layer 500 has a uniformly distributed cylindrical array of nano-materials, can effectively improve the diffraction effect of light, and can be used for avoiding excessive dispersion of light.

Wherein the InP quantum dots are configured to absorb electromagnetic waves below 480nm and emit visible light having an emission peak at 500 nm.

The InP quantum dots do not contain cadmium elements, so that the method is more environment-friendly.

Example 3

The light conversion film 100 as depicted in fig. 3 comprises, from top to bottom, a tearable sticker 600 with a thickness of 50 μm, a 1mm flexible glass or plastic substrate 700, a 12 μm first base layer 300, a 10 μm light conversion layer 200, and a 12 μm second base layer 400.

The light conversion material in the light conversion layer 200 of the present embodiment is formed by mixing perovskite quantum dots and polyurethane resin, the first base layer 300 is a nylon film, and the second base layer 400 is a polyethylene film.

Wherein the perovskite quantum dots are configured to absorb electromagnetic waves below 460nm and emit visible light with an emission peak at 480 nm.

The tearable sticker 600 can be conveniently attached to the surface of a display device such as a spectacle lens, a mobile phone screen, a computer screen, etc.

The present invention also provides a pair of blue light prevention glasses (not shown), wherein the light conversion film 100 is disposed on at least one surface of the lenses of the pair of blue light prevention glasses.

Specifically, can adopt coating process or sticky mode of laminating to set up in the lens surface that the people's eye was kept away from to glasses lens when using with light conversion film 100, thereby, after the wide range blue light incident light that contains the shortwave blue light in the external world permeates light conversion film and lens, the shortwave blue light will be converted into the wavelength by light conversion film 100 relatively longer, harm less long wave blue light to people's eye, thereby effectively protect eyes, because at this in-process, the blue light is only for the long wave from the shortwave conversion, it is less to the loss of blue light part, therefore the luminance and the colour of incident light all can remain unchanged.

The present invention also provides an illumination device 800, as shown in fig. 4, in which the light conversion film 100 is disposed in the light emitting direction of the light source of the illumination device. Specifically, the light conversion film is provided on any surface of the film layer structure that can be attached in the emission direction of the light source of the illumination device, for example, the inner surface or the outer surface of the light source cover. Consider that lighting device is the source that provides illumination light as the light source, set up the light conversion membrane at lighting device's source, can convert the blue light of shortwave from the source, and need not to wear the blue light glasses of preventing of idiosyncrasy, use the scene more extensive. It should be noted that for a mask with differently shaped attachment surfaces, such as a hemispherical shape, it is also reasonable and optional to arrange the light-converting film to have an arcuate surface as well.

As shown in fig. 5, a spectral analysis chart of an LED bulb before and after a light conversion film of the present invention is attached to the LED bulb is shown, in which the InP quantum dot light conversion film described in embodiment 3 is used as the light conversion film, and a peelable adhesive of the light conversion film is attached to a surface of a globe of the LED bulb. According to the graph, the spectrum of the LED bulb before the light conversion film is added has a peak value at 450nm, and the spectrum after the light conversion film is added is obviously reduced at 450nm and is obviously enhanced at 480 nm.

The present invention also provides a display device 900, such as a computer monitor shown in fig. 6, which arranges the light conversion film 100 in the light emitting direction of the light source of the display device. Specifically, the light conversion film is disposed on any surface of the display device in the light emitting direction, where the film layer structure can be attached, for example, in the case of an LCD (liquid crystal display) display device, since it is necessary to use a blue LED as a backlight light source, the light conversion film may be disposed in the light emitting direction of the blue LED, such as on the inner and outer surfaces of a display glass plate closest to human eyes, or directly on the surface of the blue LED; for a self-luminous display device, such as an OLED (organic light emitting diode) display device, since it has a characteristic that pixels are self-luminous, a light conversion film must be disposed on an outer surface of the outermost glass or between an organic light emitting layer and the outermost glass. The display device has high requirements on color purity, and by adding the light conversion film layer, harmful blue light components can be effectively reduced without reducing too much color purity.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims

1. A light conversion film comprising a light conversion material, the light conversion film being for converting incident light into outgoing light;

wherein: when the wavelength of the incident light is shorter than the first wavelength, the wavelength of the emergent light is in a second wavelength range;

the length of the first wavelength is 380-500 nm, and the second wavelength range is a subset of the first wavelength to 500 nm.

2. The light conversion film of claim 1, wherein the light conversion material comprises one or more of quantum dots, rare earth fluorescent materials, organic small molecule luminescent materials and organic polymer luminescent materials.

3. The light conversion film of claim 2, wherein the quantum dots comprise one or a combination of:

4. The light conversion film according to claim 3, wherein the perovskite comprises an inorganic perovskite or an inorganic-organic hybrid perovskite;

the structural general formula of the inorganic perovskite is AMX3, wherein A is Cs + ions, M is divalent metal cations and comprises Pb² ⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn²⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halogen anion, including Cl^－、Br^－、I^－；

The structural general formula of the organic-inorganic hybrid perovskite is BMX3, wherein B is organic amine cation and comprises CH₃(CH₂)_n－2NH₃ ⁺Or NH₃(CH₂)_nNH₃ ²⁺M is a divalent metal cation including Pb²⁺、Sn²⁺、Cu²⁺、Ni²⁺、Cd²⁺、Cr²⁺、Mn² ⁺、Co²⁺、Fe²⁺、Ge²⁺、Yb²⁺、Eu²⁺X is a halogen anion, including Cl^－、Br^－、I^－。

5. The light conversion film of claim 1, further comprising a light conversion layer, wherein the light conversion material is located in the light conversion layer.

6. The light conversion film of claim 1, further comprising a first base layer and a second base layer, the first base layer, the light conversion layer, and the second base layer being disposed in a stacked arrangement in that order.

7. The light conversion film of any of claims 1-6, wherein the first wavelength is 460 nm.

8. The light conversion film of any of claims 1-6, wherein the second wavelength range is 480nm to 500 nm.

9. A method of making a light conversion film, comprising:

obtaining a first base layer;

disposing a light conversion layer on the first base layer;

disposing a second base layer on the light conversion layer;

wherein: the light conversion layer contains a light conversion material which converts incident light into emergent light; when the wavelength of the incident light is shorter than the first wavelength, the wavelength of the emergent light is in a second wavelength range; the length of the first wavelength is 380-500 nm, and the second wavelength range is a subset of the first wavelength to 500 nm.

10. Blue-light blocking glasses, wherein the light conversion film according to any one of claims 1 to 8 is disposed on at least one surface of the lens of the blue-light blocking glasses.

11. A lighting device, wherein the light conversion film according to any one of claims 1 to 8 is provided in a light exit direction of a light source of the lighting device.

12. A display device, characterized in that a light conversion film according to any one of claims 1 to 8 is disposed in the light exit direction of the display device.