CN220795605U - Eye protection device - Google Patents

Abstract

The present utility model provides an eye protection device comprising: the device comprises a rough blank with refraction degree, a dyeing layer positioned on the surface of the rough blank, an overprinting layer positioned on the surface of the dyeing layer and a hardness layer positioned on the surface of the overprinting layer, wherein: the dyed layer is capable of filtering at least 80% of light in a first wavelength band of 455nm-465 nm. The eye protection device of the embodiment of the utility model is designed aiming at two peak narrow wave band ranges of the LED spectrum, and has the following advantages: the problem of insufficient protection of green light wave bands (500 nm-600 nm) is solved; the wavelength filtering is narrow-band filtering, the width is not more than 15nm, and the wide-range light waves cannot be filtered to cause that a user cannot distinguish color or unrecognizable chromatic aberration, and imaging and display effects are not affected; the filtering efficiency is high and reaches more than 70%; the biological characteristics of ipRGC and the like are more met, and the method is more targeted.

Description

Eye protection device

Technical Field

The utility model relates to the technical field of optics, in particular to eye protection equipment capable of filtering specific wave bands.

Background

With the popularization of lighting devices and the increase of intelligent display equipment, the work and the activity of people are not limited by natural light any more, and the intelligent display device has the conditions of working or activity all the day. The time during which the retina receives light is also greatly increased. Statistics of the Chinese medical society show that 63.5% of people in Chinese netizens have eye diseases with different degrees of vision degradation, cataract, blindness and the like due to blue light radiation.

Light is divided into three wave bands of ultraviolet (100-400 nm), visible light (400-760 nm) and infrared (760-10000 nm) according to different wavelengths. The lens is capable of absorbing near ultraviolet (< 400 nm) and far infrared (> 800 nm), the cornea and lens are capable of absorbing infrared exceeding 980nm, and the vitreous body is capable of absorbing infrared exceeding 1400 nm. The non-ionizing radiation reaching the retina is therefore limited to the 390-780nm band.

Since the three cones present in the human retina have spectral absorption peaks, they correspond to the short wavelength (blue), the medium wavelength (green) and the long wavelength (red) of visible light, respectively. Thus, artificial light sources are also typically combined with blue, green and red three primary color light sources to provide a mixture of different colors.

Recent studies have demonstrated that the types of retinal photodamage fall into: photo-thermal damage, photo-mechanical damage, photochemical damage, with photochemical damage being the most common. Photochemical damage can generate free radicals, causing death of non-renewable retinal pigment epithelial cells (RPEs), which in turn cause apoptosis of photoreceptor cells adjacent thereto. The accumulation of such lesions may lead to age-related macular degeneration, leading to reduced vision and central vision. In daily life, light with the wavelength of 600nm-700nm usually does not cause photodamage to retina due to weak energy and low content in natural light source and artificial light source. Blue-green light between 400nm and 600nm has been shown to be associated with a variety of diseases, particularly 400nm to 500nm blue light, due to the higher content in the light source and the greater energy. The three groups of people most susceptible to photodamage at present are respectively: infants and children (Gao Languang transmittance), diabetics (retinopathy caused by sugar metabolism) and patients (light sensitive) who have used photosensitizing drugs. The transmittance of blue light by the human eye varies with age, and for children aged 2-10, 70% of the blue light reaches the retina, and then the proportion gradually decreases with increasing age, and at 60, about 40% of the blue light reaches the retina. Therefore, how to effectively prevent the damage of blue-green light with the wavelength of 400-600nm in the increasingly more illumination and display devices to human eyes is an important problem to be solved.

The prior art is currently mainly concerned with the prevention of blue light damage by "soft techniques". Blue light prevention is realized by soft means such as blue light prevention glasses, blue light prevention coating films, soft body reducing blue light intensity and the like. The blue light prevention glasses commonly used in the market can be divided into two types according to the principle: a blue light preventing glasses with colorless transparent lenses is characterized in that a film layer capable of reflecting short-wave blue light is plated on the surfaces of the lenses, but the actual reflection effect is poor and the blue light filtering rate is only 30% -70%, so that the blue light hazard is not effectively solved. The other is a pair of light yellow blue-light-proof glasses, which adopts a bleeding principle, and the dye is permeated into the lens material by a permeation method to absorb blue light, so that the glasses are used in the market, but the visual effect color cast is obvious.

Disclosure of Invention

In view of the above, the present utility model aims to provide an eye protection device capable of reducing photodamage to human eyes and having no color cast visual effect.

The eye protection device provided by the utility model comprises: the device comprises a rough blank with refraction degree, a dyeing layer positioned on the surface of the rough blank, an overprinting layer positioned on the surface of the dyeing layer and a hardness layer positioned on the surface of the overprinting layer, wherein: the dyed layer is capable of filtering at least 80% of light in a first wavelength band of 455nm-465 nm.

Optionally, the dyeing layer can filter at least 80% of light rays in a second wave band, the second wave band is located in a range of 520nm-580nm, and the wave band width is smaller than 15nm.

Optionally, the dye layer has a light transmittance of greater than 70% for bands outside the first band and the second band in the visible light range.

Optionally, the color parameters of the dyed layer satisfy the following conditions: in the Lab color space, the brightness L average value of the center point is 20 to 25, the red-green channel a average value is 12 to 15, and the yellow-blue channel b average value is-30 to-35; the average value of the brightness L of the edge points is 20 to 25, the average value of the red and green channels a is 15 to 20, and the average value of the yellow and blue channels b is-25 to-30; or, in the LUV color space, the center point has a luminance L-average value of 25 to 30, a chromaticity U-average value of-3 to-5, and a chromaticity V-average value of-45 to-50; the edge points have a luminance Lmean value of 25 to 30, a chrominance Umean value of 15 to 20, and a chrominance Vmean value of-40 to-45.

Optionally, the color parameters of the dyed layer satisfy the following conditions: in Lab color space, the brightness L average value of the center point is 23.588, the red-green channel a average value is 13.066, and the yellow-blue channel b average value is-33.02; the average brightness value of the edge points is 24.232, the average value of the red and green channels a is 15.144, and the average value of the yellow and blue channels b is-26.164; or, in the LUV color space, the center point has a luminance L-average value of 27.902, a chromaticity U-average value of-4.096, and a chromaticity V-average value of-49.678; the edge points had a luminance Lmean of 29.14, a chrominance Umean of 15.144, and a chrominance Vmean of-44.06.

Alternatively, the eye protection device may be in the form of a patch, a lens clip, an intraocular lens, or a contact lens.

Optionally, the thickness of the dyed layer is 5 micrometers to 90 micrometers.

Optionally, the thickness of the overprint layer is from 5 micrometers to 90 micrometers.

Optionally, the hardness layer has a thickness of 0.02 micrometers to 50 micrometers.

The technical scheme of the embodiment of the utility model is designed aiming at the two peak narrow-band ranges of the LED spectrum, and has the following advantages: (1) The problem of insufficient protection of green light wave bands (500 nm-600 nm) is solved; (2) The wavelength filtering is narrow-band filtering, the width is not more than 15nm, and the wide-range light waves cannot be filtered to cause that a user cannot distinguish color or unrecognizable chromatic aberration, and imaging and display effects are not affected; (3) the filtering efficiency is high and reaches more than 70 percent; (4) The biological characteristics of ipRGC and the like are more met, and the method is more targeted.

Drawings

The drawings are included to provide a better understanding of the utility model and are not to be construed as unduly limiting the utility model. Wherein:

FIG. 1 is a graph comparing the degree of damage to cells from monochromatic light of different wavelengths;

FIG. 2 is a spectral diagram of a conventional white light LED;

fig. 3 is a schematic structural view of an eye-protecting device according to an embodiment of the present utility model;

FIG. 4 is a comparison graph of filtered spectra of blue-proof lenses and competitive blue-proof glasses for sunlight (full spectrum) at a particular color according to an embodiment of the present utility model;

FIG. 5 is a comparison of filtered spectra of blue-proof lenses and competitive blue-proof glasses for white LED illumination for a particular color of an embodiment of the present utility model;

FIG. 6 is a graph comparing the protective effects of blue-light-proof lenses and competitive blue-light-proof glasses of the embodiments of the present utility model tested by using 661W cells for photodamage experiments;

FIG. 7 is a graph comparing the protective effects of blue-light-proof lenses and competitive blue-light-proof glasses of the embodiments of the present utility model tested in a photodamage experiment using ARPE-19 cells.

Detailed Description

Human eye self-photosensitive retinal ganglion cells (iprgcs) are associated with myopia progression, which increases myopia progression if they are photodamaged. The inventor adopts 661W cells to compare the damage degree of monochromatic light with different wavelengths to the cells through CCK-8 experiments, and the experimental results are shown in figure 1. FIG. 1 demonstrates that the 460nm band causes more severe photodamage to photoreceptor cells than 440nm and 480nm, in other words that the iPRGC has maximum sensitivity to blue light around 460 nm. The research of the spectrum diagram of the white light LED has reference significance for researching the light damage of a user under indoor light, and fig. 2 is a spectrum diagram of a common white light LED, and two peaks of 464nm and 550nm can be seen from the graph. As will be appreciated in connection with fig. 1, the 464nm peak in the white LED spectrum may cause significant damage to the ipRGC, so the eye-protection device should focus on filtering out blue light in this band.

An eye protection device according to an embodiment of the present utility model, as shown in fig. 3, includes: a rough blank 01 with refractive power, a dyeing layer 02 positioned on the surface of the rough blank, an overprinting layer 03 positioned on the surface of the dyeing layer and a hardness layer 04 positioned on the surface of the overprinting layer. Wherein the dyed layer 02 is capable of filtering out at least 80% of light in a first wavelength band of 455nm-465 nm. Optionally, the dye layer 02 can filter out at least 80% of light in a second wavelength band, the second wavelength band being in the range of 520nm to 580nm, and the band width being less than 15nm. Alternatively, the dye layer 02 has a light transmittance of more than 70% for each of the wavelength bands other than the first wavelength band and the second wavelength band in the visible light range. The eye protection device may be in the form of a patch, a lens clip, an intraocular lens, a contact lens, or the like.

In order to make the user feel no obvious color cast, the color parameter of the dyed layer 02 of the eye protection device according to the embodiment of the present utility model may satisfy one of the following conditions: (1) In the Lab color space, the brightness L average value of the center point is 20 to 25, the red-green channel a average value is 12 to 15, and the yellow-blue channel b average value is-30 to-35; the average value of the brightness L of the edge points is 20 to 25, the average value of the red and green channels a is 15 to 20, and the average value of the yellow and blue channels b is-25 to-30; (2) In the LUV color space, the brightness Lmean value of the center point is 25-30, the chromaticity Umean value is-3-5, and the chromaticity Vmean value is-45-50; the edge points have a luminance Lmean value of 25 to 30, a chrominance Umean value of 15 to 20, and a chrominance Vmean value of-40 to-45.

The color parameters of the dyeing layer 02 of the eye protection device according to the embodiment of the utility model are specifically recommended values: in Lab color space, the brightness L average value of the center point is 23.588, the red-green channel a average value is 13.066, and the yellow-blue channel b average value is-33.02; the average brightness value of the edge points is 24.232, the average value of the red and green channels a is 15.144, and the average value of the yellow and blue channels b is-26.164; or, in the LUV color space, the center point has a luminance L-average value of 27.902, a chromaticity U-average value of-4.096, and a chromaticity V-average value of-49.678; the edge points had a luminance Lmean of 29.14, a chrominance Umean of 15.144, and a chrominance Vmean of-44.06.

The Lab color space is a color model established and named according to an International Standard for color measurement, which was established by the International Commission on illumination (CIE) in 1931. The Lab color model compensates for the deficiencies of the RGB and CMYK color modes. It is a device independent color model, a physiological feature based color model. Lab is composed of a luminance channel (channel) and two color channels, which are represented by three values L, a, and b, respectively.

Among them, the LUV color space is a three-dimensional coordinate system representing colors, and is commonly used in the fields of computer graphics, computer vision, and color science. It is a color space defined by the International Commission on illumination (CIE). The three coordinate components of the LUV color space are L, u and v, respectively. L represents Luminance (Luminance) ranging from 0 to 100, where 0 represents black and 100 represents white. The L value describes the darkness of the object. u and v represent Chromaticity (chroma), describing the saturation and hue of the color, respectively. The values of u and v are typically in the range of-100 to +100, where u=0 and v=0 represent colorless or ashless degrees.

The color parameter test results of an eye protection device in the form of a blue-ray-proof lens according to an embodiment of the present utility model are shown in tables 1 and 2 below.

TABLE 1 Lab color space data for blue-proof lens color parameters according to an embodiment of the present utility model

Table 2 LUV color space data of blue-light-proof lens color parameters according to an embodiment of the present utility model

LUV color space	Brightness L	Chromaticity U	Chromaticity V
				Center point 1	28.06	-3.61	-49.08
Center point 2	28.21	-3.86	-49.9
				Center point 3	26.85	-3.29	-46.91
Center point 4	27.85	-4.28	-49.94
				Center point 5	28.54	-5.44	-52.56
Mean value of center points	27.902	-4.096	-49.678
				Edge point 1	28.65	2.16	-43.31
Edge point 2	28.52	1.66	-44.27
				Edge point 3	28.73	-0.15	-46.75
Edge point 4	29.82	4.88	-41.63
				Edge point 5	29.98	2.85	-44.34
Average value of edge points	29.14	2.28	-44.06

FIG. 4 is a comparison graph of filtered spectra of blue-proof lenses and competitive blue-proof glasses for sunlight (full spectrum) under the above specific colors according to an embodiment of the present utility model; fig. 5 is a comparison diagram of the filtered spectrum of the blue-proof lens and the competitive blue-proof glasses for white LED illumination in the specific color according to the embodiment of the present utility model. As can be seen from fig. 4 and fig. 5, the blue light preventing lens according to the embodiment of the present utility model meets the requirements of Lab color space and LUV color space, and has a good blue light preventing effect, and has a certain protection effect on the light with the green wavelength of 500-600nm, so as to make up the defect that the prior art only protects blue light during outdoor full spectrum illumination. Meanwhile, wearing discomfort caused by too yellow color of the lenses can be reduced, and the probability of affecting use in daily life is reduced.

The preparation method of the eye protection device mainly comprises the following steps: performing power processing on the original lens to obtain a rough blank with diopter; forming a dyeing layer on the surface of the rough blank, wherein the dyeing layer can filter at least 80% of light rays in a first wave band of 455-465 nm; forming an overprinting layer on the surface of the dyeing layer; and forming a hardening layer on the surface of the overprinting layer. Optionally, the dyeing layer can filter at least 80% of light in a second wave band, the second wave band is located in a range of 520nm-580nm, and the wave band width is smaller than 15nm. Optionally, the dye layer has a light transmittance of greater than 70% for all bands outside the first band and the second band in the visible light range. The eye protection device may be in the form of a patch, a lens clip, an intraocular lens, a contact lens, or the like.

In order to prevent the user from feeling obvious color cast, in the method for preparing the eye protection device according to the embodiment of the present utility model, the color parameters of the dyed layer need to meet the Lab color space specific requirements or the Lab color space specific requirements, and specific data are referred to above and are not repeated herein.

The specific steps of the preparation method of the eye protection device in the embodiment of the utility model are as follows: the ophthalmic lenses may first be subjected to power processing and then to rough blanks, after which they are dyed. The dyeing is firstly carried out by color allocation, and finally the dye liquor which accords with the color parameters is prepared. And (3) performing preliminary dyeing and coloring on the rough embryo by using a dyeing liquid, and then further smearing an additional printing liquid. The function of the overprinting liquid is to make the dye liquid deposit on the medium better. Baking at 80deg.C for 5 hr to thoroughly mix the dyeing layer and the overprinting layer, and ensure uniformity and stability of color. And then, carrying out hardening film plating treatment to wrap the overprint layer and the dyeing layer inside, so that the surface hardness of the lens is increased, the color change caused by coating abrasion is prevented, and the processing is finished.

The details of the dyeing step are as follows: adding water and dyeing auxiliary agent into the dyeing liquid toner to form the dyeing liquid. The dyeing auxiliary agent has the function of better dissolving the toner in water, accelerating the dyeing speed of the lens, wherein the temperature of the dyeing liquid is generally 80-90 ℃, and the dyeing time is determined according to the required color concentration of the lens. The dyeing principle is that the lens is placed in the dyeing liquid with the temperature of 80-90 degrees, and the lens is subjected to high temperature, so that the molecular gaps are expanded, and toner particles enter the molecular gaps. After the lens cools, the molecular gap is reduced, and the tinting is completed. The dyeing time varies, and the depth and concentration of the fine particles penetrating the lens vary, and the dyeing depth is generally about 0.03 to 0.1 gamma. Before the lens is dyed, the solvent such as alcohol or the like or the sound wave is used for cleaning dirt and grease on the surface of the lens. In the case of main dyeing, lenses are fixed to a frame (carrier) of a dyeing machine and then placed in a dyeing tank of the dyeing machine. Generally, the electrothermal dyeing machine is provided with stainless steel tanks with different numbers, and different dyeing liquids can be respectively contained in the stainless steel tanks. The heating can be performed simultaneously or independently. The dyeing machine which is provided with a thermostat in the dyeing box and can automatically regulate the temperature so that the dyeing liquid is kept in a constant temperature state is also provided with an ultrasonic device, a timer is regulated according to the coloring concentration of the lenses, the lenses are immediately flushed by clear water when the loading frame automatically leaves the dyeing liquid and leaves the dyeing liquid, otherwise, the lenses are unevenly colored, and then the lenses and the samples are placed on white paper for color and concentration comparison, so that quality detection is carried out. It follows that the preparation is achieved chemically, mainly by means of a dye layer comprising a filter compound. Compared with the physical mode based on various optical instruments, the chemical mode has the advantages of no need of occupying huge space, no need of operation and maintenance and convenience in product miniaturization.

In order to achieve a better blue light preventing effect, the thickness of the dye layer 02 may be 5 micrometers to 90 micrometers, the thickness of the overprint layer 03 may be 5 micrometers to 90 micrometers, and the thickness of the hardness layer 04 may be 0.02 micrometers to 50 micrometers.

In order for the skilled person to better understand the technical effects of the eye protection device of the embodiments of the present utility model. The inventor uses a CCK-8 detection kit to carry out cell viability experiment verification, and aims to compare the effectiveness and the good effectiveness of the blue-light-proof lens and the competitive product (blue-light-proof lens of a certain company) according to the embodiment of the utility model by filtering the influence of a post-spectrum on a cell line. Fig. 6 is a comparative graph of the protective effect of blue-light-proof lenses and competitive blue-light-proof glasses of the embodiments of the present utility model tested by using 661W cells for photodamage experiments. As shown in fig. 6, the blue light preventing lens according to the embodiment of the utility model can better reduce death of the photoreceptor cell line 661W caused by white light. FIG. 7 is a graph comparing the protective effects of blue-light-proof lenses and competitive blue-light-proof glasses of the embodiments of the present utility model tested in a photodamage experiment using ARPE-19 cells. As shown in FIG. 7, the blue light preventing lens of the embodiment of the utility model can well reduce death of the ARPE-19 cells of the retinal pigment epithelial cell line caused by white light.

In summary, the eye protection device and the preparation method thereof according to the embodiments of the present utility model are designed for two peak narrow-band ranges of the LED spectrum, and have the following advantages: (1) The problem of insufficient protection of green light wave bands (500 nm-600 nm) is solved; (2) The wavelength filtering is a narrow-band filtering, the width is not more than 15 and is only 10 nm, and the problem that a user cannot distinguish colors without color separation or unrecognizable chromatic aberration caused by large-range light waves is avoided, so that imaging and display effects are not influenced; (3) the filtering efficiency is high and reaches more than 70 percent; (4) The biological characteristics of ipRGC and the like are more met, and the method is more targeted.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives can occur depending upon design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims (9)

1. An eye protection device, comprising: the device comprises a rough blank with refraction degree, a dyeing layer positioned on the surface of the rough blank, an overprinting layer positioned on the surface of the dyeing layer and a hardness layer positioned on the surface of the overprinting layer, wherein: the dyed layer is capable of filtering at least 80% of light in a first wavelength band of 455nm-465 nm.

2. The eye-shielding device according to claim 1, wherein the dyed layer is capable of filtering at least 80% of light in a second wavelength band, the second wavelength band being in the range of 520nm-580nm and the band width being less than 15nm.

3. The eye-shielding device according to claim 2, wherein the dye layer has a light transmittance of more than 70% for each of the wavelength bands other than the first wavelength band and the second wavelength band in the visible light range.

4. The eye-protection device according to claim 1, wherein the color parameters of the dyed layer satisfy the following conditions:

in the Lab color space, the brightness L average value of the center point is 20 to 25, the red-green channel a average value is 12 to 15, and the yellow-blue channel b average value is-30 to-35; the average value of the brightness L of the edge points is 20 to 25, the average value of the red and green channels a is 15 to 20, and the average value of the yellow and blue channels b is-25 to-30; or,

in the LUV color space, the brightness Lmean value of the center point is 25-30, the chromaticity Umean value is-3-5, and the chromaticity Vmean value is-45-50; the edge points have a luminance Lmean value of 25 to 30, a chrominance Umean value of 15 to 20, and a chrominance Vmean value of-40 to-45.

5. The eye-protection device according to claim 1, wherein the color parameters of the dyed layer satisfy the following conditions:

in Lab color space, the brightness L average value of the center point is 23.588, the red-green channel a average value is 13.066, and the yellow-blue channel b average value is-33.02; the average brightness value of the edge points is 24.232, the average value of the red and green channels a is 15.144, and the average value of the yellow and blue channels b is-26.164; or,

in the LUV color space, the center point has a luminance L-average of 27.902, a chrominance U-average of-4.096, and a chrominance V-average of-49.678; the edge points had a luminance Lmean of 29.14, a chrominance Umean of 15.144, and a chrominance Vmean of-44.06.

6. The eye-protection device according to any one of claims 1 to 5, wherein the eye-protection device is in the form of a patch, an ophthalmic lens, a lens clip, an intraocular lens or a contact lens.

7. The eye protection device according to any one of claims 1 to 5, wherein the thickness of the dyed layer is 5 to 90 microns.

8. The eye-shielding device according to any one of claims 1 to 5, wherein the thickness of the overprint layer is 5 to 90 microns.

9. The eye protection device according to any one of claims 1 to 5, wherein the hardness layer has a thickness of 0.02 to 50 microns.