Eye-closed three-dimensional light-feeding LED device

Abstract

The utility model relates to the technical field of light feeding devices, in particular to an eye-closed three-dimensional light feeding LED device, which is characterized in that a pupil LED chip group comprises a red light chip and a near-infrared light chip with the wavelength range of 625nm to 960nm; a pupil LED chip set, an eyelash LED chip set and a meibomian gland LED chip set are fixedly installed on the pupil aluminum substrate, and forced eye closing distance control hair is arranged on the pupil aluminum substrate. A lens aluminum substrate and an eyebrow acupoint aluminum substrate are mounted on the lens seat; the system further comprises an integrated control circuit. By using the red light chip, the optical power density comparable to that of laser and the effective irradiation area larger than that of the laser can be obtained, and the alignment precision of a light source to acupuncture points is reduced; by utilizing the blood activating function of dark red and near-infrared light, myopia, eyebrow thickening and eyelash thickening can be prevented and controlled; health care can be carried out on meibomian glands and a suspension tough system, and light stimulation can be carried out on eye protection acupuncture points; all-directional three-dimensional light feeding can be realized anytime and anywhere; the safety values under various limit conditions refer to three kinds of sunlight.

Description

Technical Field

[0001] The utility model relates to the technical field of light-feeding devices, in particular to a closed-eye stereoscopic light-feeding LED device. Background Art

[0002] In recent years, naked eye laser irradiation phototherapy has been used to control myopia, achieving good results and reaching a consensus among some experts in the ophthalmology community. The domestic Elsing phototherapy device was developed from the early HeNe laser amblyopia treatment device and was the first to obtain a national second-level medical license; when irradiating the naked eye, the power density of the 650nm red laser at the corneal position is about 2.2mW / cm 2 , and it is directional light, which can generally only irradiate the macular area; considering that compared with LD, LED has low cost, high power, long life, simple and reliable power supply, LED is replacing LD in some superficial irradiation light medical applications.

[0003] There are also myopia prevention and control products on the market that use LD to aim at the eye protection acupoints on the eye socket for irradiation, some of which are located in the eyebrow area; but due to the small LD spot, it is impossible to take into account the acupoints and the entire eyebrow area, and it is impossible to provide light to multiple areas such as the ocular surface, nor is it possible to provide light to the inner wall area of ​​the eye, so there are shortcomings. Utility Model Content

[0004] The utility model aims to at least improve one of the technical problems existing in the prior art. To this end, the utility model proposes a closed-eye stereoscopic LED device.

[0005] According to the first aspect of the present invention, the LED device for stereoscopic lighting with eyes closed includes:

[0006] A pupil LED chipset, the pupil LED chipset comprising a red light chip and a near infrared light chip with a wavelength range of 625nm to 960nm;

[0007] A pupil aluminum substrate, on which a pupil LED chipset, an eyelash LED chipset and a meibomian gland LED chipset are fixedly mounted, and a forced eye closure auxiliary component is provided on the pupil aluminum substrate, and the forced eye closure auxiliary component is preferably a forced eye closure distance control hair;

[0008] A lens aluminum substrate, on which a pupil aluminum substrate is movably mounted;

[0009] A mirror base, on which a lens aluminum substrate and an eyebrow acupoint aluminum substrate are fixedly mounted;

[0010] It also includes an integrated lithium battery and charging circuit, a boost circuit, a single-chip microcomputer, a constant current control circuit and a keyboard display and voice reminder circuit. The single-chip microcomputer is electrically connected to the lithium battery and charging circuit, the constant current control circuit and the keyboard display and voice reminder circuit respectively; the constant current control circuit is electrically connected to the pupil LED chipset, and the pupil LED chipset is electrically connected to the boost circuit. Specifically, the constant current control circuit is electrically connected to the red light LED chip and the near-infrared light LED chip; the red light chip and the near-infrared light chip are electrically connected to the boost circuit; the PCB boards for LED installation are all made of aluminum substrates to help reduce the surface temperature of the light source.

[0011] In a possible implementation of the first aspect, the center of the pupil LED chipset is aligned with the center of the pupil, the shape of the eyelash LED chipset fits and is aligned with the arc of the eye suture when the eyes are closed; the meibomian gland LED chipset and the pupil LED chipset are jointly aligned with the meibomian glands; the eyebrow and acupoint LEDs target the eyelashes and eye protection acupoints; the "chip set" refers to at least 3 discrete chips to limit the maximum light power density and obtain a larger illumination area and uniformity, while also facilitating heat dissipation, thereby reducing the temperature of the light source.

[0012] In a possible implementation of the first aspect, the lens aluminum substrate and the pupil aluminum substrate are provided with pads, and the eyebrows, eyelashes, eye protection acupoints, and eyelids are simultaneously illuminated in close proximity by increasing or decreasing the pads and controlling the pin length of the eyebrow acupoint LED; so-called close means that the light-emitting surface and the surface of the illuminated object are about 2 mm apart; the specific control indicators are that the eyebrows and acupoint LEDs are greater than 2 mm but less than 7 mm away from the skin surface; the eyelash LED chipset, meibomian gland LED chipset and pupil LED chipset are greater than 1 mm but less than 5 mm away from the skin surface; the shortest distance of 1 mm between the pupil LED chipset and the skin is guaranteed by the forced eye closure distance control hair; using mechanical means to force eye closure is an important feature of the utility model.

[0013] In a possible implementation of the first aspect, in order to take into account both device cooling and PBM effects, corresponding to a single eye, the number of chips in the LED chipset is greater than 10, the total optical power is greater than 100 mW, and the total power consumption is less than 800 mW;

[0014] The total number of LED chips in the eyelash LED chipset, meibomian gland LED chipset, and eyebrow and acupoint LEDs is greater than 5, the total optical power is greater than 50mW, and the total power consumption is less than 400mW; the selection of a single LED chip is based on the HeNe red laser with an optical power of 1mW and a spot diameter of 1mm as the reference for optical power density, which is 127mW / cm2; therefore, after a single LED chip is packaged without a focusing lens, the maximum optical power density at 2mm from the light source surface is controlled at 50mW / cm 2Up to 150mW / cm 2 Between; corresponding to one eye, the heat power consumption of all light sources is less than 1.6W; the surface temperature of all light sources is lower than 50°C; the chip that meets the claims of this invention is preferably a p-layer gold-plated high-efficiency chip on the market.

[0015] In a possible implementation of the first aspect, the lens holder includes an ordinary glasses frame, a VR glasses frame, a binocular eyepiece holder, and even utilizes the strength of the lens aluminum substrate itself to adapt to frameless glasses.

[0016] In a possible implementation of the first aspect, the lens aluminum substrate is provided with a slide groove and a slider, and the COB aluminum substrate is connected to the slider by up and down adjusting screws. When there is no need to move the pupil aluminum substrate, the slider, up and down adjusting screws and the slide groove can be cancelled; when there is no need to raise the eyebrow acupoint LED, the eyebrow acupoint aluminum substrate can also be cancelled; the functions of both the pupil aluminum substrate and the eyebrow acupoint aluminum substrate can be conditionally merged into the lens aluminum substrate; another way to cancel the slider is to replace it with two nuts.

[0017] In a possible implementation manner of the first aspect, the forced eye-closing auxiliary component is preferably forced eye-closing distance control hair.

[0018] The utility model retains the two major characteristics of the existing LD light feeding device, namely good myopia control effect and good compliance. It replaces LD with special LEDs on the market and adopts the closed-eye light feeding method to ensure intrinsic safety and add several new means for eye PBM, including using red light to make eyebrows and eyelashes thick and improve meibomian gland function.

[0019] The LED device for stereoscopic lighting with eyes closed according to the embodiment of the utility model has the following technical effects compared with the prior art:

[0020] (1) Close the eyes to absorb light, which is inherently safe, and has a forced eye closure control distance hair; various extreme dangerous situations are analyzed; the maximum retinal light power density is only 1 / 7 of the existing technology, but the total power obtained by the entire retina is increased;

[0021] (2) LED irradiation is used to replace the existing LD irradiation; the performance is improved in many aspects such as light power density, irradiation area, electrical control, stability, cost and safety;

[0022] (3) Battery powered, long life, easy to carry, and good compliance;

[0023] (4) It shows that LED can be used to irradiate the acupuncture points, eyebrows, meibomian glands, and eyelashes in all directions or in different regions of the ocular surface, and the corresponding functions can be used independently or in combination;

[0024] (5) Illuminating the eye with eyes closed is in line with our instinct to look at the sun with eyes closed. Compared with the Elsing type of light-feeding device, the light-feeding mode is different. It can provide light to the entire macula and surrounding areas, as well as to all intraocular tissues such as the suspensory fovea, and near-infrared light can be added to the light-feeding spectrum. The red light energy fed into the eye is 10 times greater than the current light-feeding energy, but the power density is much smaller than oblique incident sunlight. All these indicate that the present utility model may have new PBM value.

[0025] (6) The selected LED chip has high luminous efficiency, low power consumption, and low heat generation, and will not cause burns or discomfort.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the LED chip and LED position of the utility model;

[0029] Figure 2 It is a side view and optical path schematic diagram of the utility model;

[0030] Figure 3 It is a circuit diagram of the utility model;

[0031] Figure 4 It is a schematic diagram of the VR glasses of the present utility model;

[0032] Figure 5 It is a schematic diagram of a binocular microscope of the present utility model.

[0033] Reference numerals:

[0034] Pupil LED chipset 1, eyelash chipset 101, meibomian gland chipset 102, pupil aluminum substrate 2, forced eye closure distance control hair 201, lens aluminum substrate 3, power supply positive and negative electrodes 301, slider 4, up and down adjustment screws 5, slide groove 6, eyelid 7, eyelash 701, eyebrow 702, fovea 8, retinal periphery 9, suspension 901, lens base 10, eyebrow acupoint aluminum substrate 1001, eyebrow acupoint LED 1002, positive and negative electrodes 11, soft wire 12, lens wire hole 13, lens base wire hole 14, wire 15, lithium battery and charging circuit 16, boost circuit 17, single chip microcomputer 18, constant current control circuit 19, keyboard display and voice reminder circuit 20, VR glasses main frame 21, binocular microscope main frame 22. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] In recent years, naked-eye laser irradiation phototherapy has been used to control myopia, achieving good results and reaching some expert consensus in the ophthalmology community. However, due to occasional safety disputes, it has been included in the strict supervision of the third-level medical license this year. It is estimated that it will be difficult to be effective on a large scale in the next few years, which is regrettable. However, its mechanism is scientific and is called photobiomodulation (PBM); for example, an academic paper reprinted by more than 40 well-known foreign media in 2020 (J. Clin. Med. 2020, 9, 1001) reported that British researchers used 40mW / cm at the corneal position to treat myopia. 2The 670nm deep red flashlight (torch) can effectively improve the function of the macula when used to illuminate the naked eye of adults over 40 years old. Some people abroad have collected more than 3,000 papers on PBM and have drawn two relevant conclusions: (1) The most papers use red light, and milliwatt-level red HeNe laser (632.8nm) surface irradiation is almost a panacea, and skin irradiation is rarely contraindicated; (2) As long as the light power density of the irradiated area is not much different, there is no essential difference in the clinical effect between red laser diodes (LD / coherent light) and red LED light (incoherent light); this point has now become a consensus in China. The widespread use of red light in PBM may benefit from its good penetration in the skin; it may also benefit from the fact that early HeNe gas lasers and later InGaAlP semiconductor lasers (LDs) provided a large number of high-quality red light sources for PBM; there is also a possibility that indoor lighting displays are generally lacking in deep red and near-infrared light, and children who have little outdoor activities may need to supplement this part of light for their eye development. For example, the domestic Elsing light therapy device was developed from the early HeNe laser amblyopia treatment device and was the first to obtain the national second-level medical license; when the naked eye is irradiated, the power density of the 650nm red laser at the corneal position is about 2.2mW / cm 2 Considering that LED has low cost, high power, long life, simple and reliable power supply compared with LD, LED is replacing LD in some superficial irradiation light medical applications.

[0039] At present, red LD has been used to promote hair growth. From Taobao, we can see that many companies have developed red LD hair growth caps. Therefore, it is medically feasible to use red LD or LED to thicken eyebrows.

[0040] There are also myopia prevention and control products on the market that use LD to aim at the eye protection acupoints on the eye socket for irradiation, some of which are located in the eyebrow area; but since the LD spot is small, it is impossible to take into account both the acupoints and the entire eyebrow area, so LED is used instead of LD. By taking advantage of its divergent light characteristic, it is possible to take into account both the acupoints and the eyebrow area. It is just necessary to ensure that the LED has a large enough light power output. Current LED technology can already meet this requirement.

[0041] Similarly, long eyelashes are enviable; thick eyelashes can also cover up too much white of the eyes, making them look smart and cute, so it is necessary to use LED chips close to the eye slits to irradiate, which may promote the growth of eyelashes, avoid the custom of dark circles under the eyes, protect the meibomian glands, and stay away from dry eyes. Currently, many people suffer from dry eyes, indicating that the meibomian glands (located in the eyelids, i.e., "eyelids") are not functioning properly. If LED chips can be used close to the eyelids to irradiate and activate blood circulation, dry eyes may also be improved.

[0042] At present, the Elxing type of light-feeding devices on the market all use LD naked eye light feeding. Compared with other means of controlling myopia, the advantage of light-feeding devices is good compliance. Only 3 minutes of light feeding in the morning and evening every day can control the development of myopia; the disadvantage is that LD is parallel light, and the power density at the retinal focus is affected by multiple parameters such as LD's own process, individual patients and power supply control, and it cannot be measured and stably controlled, so it is difficult to achieve absolute safety; in addition, according to the consensus of relevant ophthalmologists, the mechanism of PBM of light-feeding devices is to increase choroidal blood flow; based on this, people will naturally ask, if the macular area and even the entire retina can be fully fed with red light, wouldn't it be better and safer than just targeting a small focal area of ​​the fovea? This leads to the utility model - using LED to replace LD, by closing the eyes and feeding light closely, to achieve intelligent light feeding in multiple areas of the ocular surface, and through the eyelids, to feed light to various tissues in the eye in a comprehensive, natural and safe manner, as described in detail below.

[0043] The utility model comprises a pupil LED chip set, an eyelash LED chip set, a meibomian gland LED chip set, and an eyebrow and acupoint LED; each of which is used to irradiate the eyelids, eyelashes, meibomian glands, eyebrows, and acupoints; wherein the pupil LED chip set (1) comprises a red light chip and a near-infrared light chip with a wavelength range of 625nm to 960nm; in order to reach or approach the irradiation power density of a laser (LD), a high-efficiency InGaAlP red light chip with a gold reflector on the market is specially selected, wherein a gold reflector is used for the p-electrode, and the n-electrode is the light-emitting surface, and a surface roughening process is used to improve the light-emitting efficiency; at this time, the light-emitting mode is P=P0cosθ, where P0 is the light power density in the vertical direction of the chip, and the unit is mW / cm 2 , θ is the angle with the normal line of the chip surface; the optical power of this chip after packaging can reach about the electrical input power P 电 25% of P0, through simple integration we know that P0=0.25P 电 / (πR 2 ), where R is the distance between the irradiation surface and the chip; from this formula, we know that to increase the optical power density of the irradiation area, we have to irradiate close to the eyelids. The so-called close means that the LED chipset 1 and the meibomian gland LED chipset 102 are irradiated close to the eyelids to obtain an optical power density close to that of the HeNe laser irradiating the skin, and not exceeding the optical power density of the AM1.5 sun on the ground (100mW / cm 2 ) twice; the so-called three-dimensional refers to the fact that in addition to the ocular surface, the red light through the eyelid can widely and deeply illuminate multiple internal parts of the eye, including the suspensory optics and the fundus; for example, the working voltage of a 14mil red light chip is about 2V and the rated working current is 20mA, so P 电The output power is 40mW, the optical power is about 10mW, and the remaining 30mW of electrical power is converted into heat. If the temperature rises, contact with the skin may cause a poor experience. Therefore, the utility model uses chip varieties with low heat generation and high light emission as much as possible, so as not to lead to a vicious circle. At the same time, a thick aluminum substrate is also selected to facilitate heat dissipation and ensure that the surface temperature of the LED does not exceed 45°C, which is also the temperature threshold that easily causes infrared cataracts. The structural design of the utility model will fully consider the temperature rise of the chip surface, and the lens holder 10 is preferably made of lightweight aluminum alloy with good thermal conductivity, and cooling fins are added when necessary.

[0044] In terms of PBM on the skin and acupuncture points, we refer to the optical power density value of the early HeNe laser. For a 1mW laser, the spot diameter is about 1mm, so the optical power density is 127mW / cm 2 This is the goal that the utility model should achieve or exceed after using LED to replace LD. Considering that the light power density of AM1.5 sunlight shining on the head is 100mW / cm 2 However, HeNe laser and red LED are cold light sources and local irradiation. According to past experience, when using LED, the power should not exceed 240mW / cm 2 It should be safe.

[0045] The pupil LED chipset 1 irradiates through the eyelids, and its light power density should be considered separately and carefully. The analysis is as follows: First, we still use three types of sunlight as a reference. One is the red sunlight that can be directly viewed in the morning. We have tested it. From staring at the red sun when the sun just rises to being unable to look directly at it with the naked eye, the time is about 5 to 8 minutes. The power density when it is impossible to look directly at it is measured to be about 2mW / cm 2 This value is related to the individual's tolerance to strong light, and this is approximately the average value. In addition, we can close our eyes and see 100mW / cm 2 According to literature and tests, the eyelids mainly transmit deep red and near-infrared light, with an overall transmittance of about 2%, so it is also 2mW / cm 2 This should be the maximum optical power density of parallel light entering the eye (the solar disk has a certain viewing angle and is not strictly parallel light); as long as it does not exceed this value, short-term exposure (within 10 seconds) should be safe; it should also be considered here that sunlight is a continuous spectrum, and light of various wavelengths cannot be focused on the retina at the same time, so using HeNe laser or LD to expand the beam and irradiate the naked eye, everyone may have followed this natural standard, but the duration of exposure may not be in line with nature.

[0046] Another value for taking sunlight as a safety reference is that we occasionally look at the sun's surface with our naked eyes, which means that our eyes' instinctive protection allows us to look at 100mW / cm2 with our naked eyes for a very short time. 2Therefore, the understanding of "close" in this utility model is conditional, and it is by no means the closer the better, that is, the higher the power density of the LED, the better, 100mW / cm 2 This is the maximum accident limit value of the utility model. For this purpose, a forced eye closure measure is specially designed. There are many measures for forced eye closure. In the utility model, a mechanical method is selected to force the eye closure by adding hair to stimulate the "white of the eye".

[0047] Another consideration for using sunlight as a safety reference is that as long as you don't look directly at the sun, it is common for sunlight to enter the eye obliquely; perhaps the development of the human eye also requires this part of obliquely incident strong light, which may be another new mechanism by which outdoor activities are beneficial to the prevention and control of myopia; at least it shows that the all-round intraocular irradiation of the present invention is safe.

[0048] Based on the above safety and dosage references, the irradiation parameters of the various LEDs mentioned above are designed as follows:

[0049] First, the eyebrows and acupuncture points of the skin are illuminated by LED 1002. According to the previous formula, P0=0.25P 电 / (πR 2 ), 14mil 10mW red light chip, 2mm away from the chip surface, the maximum power density is 10 / (3.14*0.2*0.2)=80mW / cm 2 , which is comparable to the reference value of HeNe laser 127mW / cm 2 Comparable,

[0050] Therefore, the irradiation distance of 2mm is more practical, and the LED irradiation area is large, and there is no need to accurately aim at the acupoints, which is superior to laser irradiation; if it is 1mm away from the skin, the power density is 320mW / cm 2 , which should also be within the safe range. The design arranges one LED for each eye protection acupuncture point, but gives priority to the acupuncture points in the eyebrows; packaged LEDs can be used, 10 per eye, and the designed irradiation distance can be achieved by using the height of the pins or the thickness of the lens base 10.

[0051] The above irradiation distance considerations are also applicable to the eyelash LED chipset 101 and the meibomian gland LED chipset 102, which also have 10 chips per eye. The number of chips is uniformly selected using the modulus of "5" for the convenience of series and parallel connection. In the following embodiments, 5 chips are connected in parallel in one group, and then 2 groups are connected in series to increase the working voltage to 4V.

[0052] The utility model focuses on the pupil LED chipset 1. Considering the convenience of alignment, 20 10mW chips are designed for each eye, with a chip center distance of 1mm and a chip size of 0.35mm×0.35mm. There are 5 chips in each row, and a total of 4 rows. When the eyes are closed, the maximum power density contribution of a single chip at 2mm is about 80mW / cm 2 ; Since the chip center spacing is 1mm, the pupil diameter is about 2mm under strong light. In terms of area, the light energy of about 3.14 chips can pass through the eyelid to illuminate the eye, that is, the light power density on the eyelid surface is 251mW / cm 2 , but after passing through the eyelids, it is only 5.0mW / cm 2 The divergent light; since the human eye axis is about 24mm, after these lights reach the retina, the equivalent power density is 5.0 / (3.14*2.4*2.4)=0.28mW / cm 2 Parallel light or laser exposure to naked eyes, so it is very safe to close your eyes to see LED chipset 1, which is almost 2mW / cm higher than the typical value of current light feeding instruments. 2 7 times lower, even referring to the British flashlight naked eye indicator of 40mW / cm in the background. 2 , 5.0mW / cm 2 It is also 8 times smaller, so the utility model is at least guaranteed in terms of safety.

[0053] But can such a small power density achieve the effect of controlling myopia? Let's look at the total optical power of 3.14 chips reaching the fundus. This value is 31.4mW×2%=0.63mW, while the total power of the Elsing light detector reaching the eye through a 2mm diameter pupil is 2mW / cm 2 ×3.14×0.1×0.1=0.063mW, which shows that the utility model is 10 times more powerful than the light feeding instrument. These lights will illuminate the intraocular objects including the suspensory structure with red light, and the average power density is 0.63mW / inner surface area of ​​the eyeball=0.035mW / cm 2 This value will never cause harm to any tissue in the eye. To prove this conclusion, let's compare the power density of the solar disk on the retina. The sun's visual angle is 0.53 degrees, so the diameter of the sun image on the retina is about 0.53×2×3.14×24mm / 360=0.22mm. The power density of the red sun at the cornea position that can be seen by the naked eye for a long time in the morning is measured to be about 1mW / cm 2 , the light power received by the 2mm pupil is 0.032mW, so the sunlight power density corresponding to the retinal fovea should be 0.032mW / (3.14×0.011×0.011)=84mW / cm 2 , which is much greater than the average power density of 3 LEDs on the inner surface of the eyeball, which is 0.035mW / cm 2, so it is absolutely safe. In addition, people often look directly at the sun with their naked eyes. At this time, the light power density on the inner surface of the eyeball should also be 84mW / cm 2 Even if it is as small as 1 / 10, it is much smaller than 0.035mW / cm 2 It is big, so it is proven to be absolutely safe again.

[0054] The following is another proof that even if the naked eye looks directly at the pupil, LED chipset 1 will not cause eye injury: Assuming the distance from the eyelid surface is 2mm, the distance from the cornea is 3mm, so the optical power density of 3.14 chips at the cornea is: 251×4 / 9=111mW / cm 2 , which is equivalent to 100mW / cm2 of AM1.5 sunlight 2 , but because it is divergent light, it is equivalent to 111mW / cm 2 ×9 / (24×24)=1.73mW / cm 2 The parallel light is incident from the cornea, which is smaller than the red sunlight in the morning and also smaller than the light parameter of the naked eye treatment of the Elsing light device. Therefore, even if the child occasionally opens his eyes, it will not cause eye injury.

[0055] The above estimates are based on the pupil being 2mm under strong light. Therefore, if the user's pupil is not less than 2.5mm under strong light, a lower LED chipset power should be selected and other eye problems should be ruled out.

[0056] With the above safety and dosage certification, the connection relationship of the utility model is as follows:

[0057] See also Figure 1 , Figure 2 and Figure 4 , the pupil LED chipset 1, the eyelash LED chipset 101 and the meibomian gland LED chipset 102 are mounted on the pupil aluminum substrate 2; the pupil aluminum substrate 2 is mounted on the lens aluminum substrate 3; the eyebrow and acupoint LEDs 1002 are mounted on the eyebrow acupoint aluminum substrate 1001; the lens aluminum substrate 3 and the eyebrow acupoint aluminum substrate 1001 are mounted on the mirror base 10; the thickness of the pad 401 and the mirror base 10 is used to adjust the vertical distance from all chip surfaces to their respective skins; in the present utility model, the distance between the pupil LED chipset 1 and the eyelid is set to 1mm to 3mm, and the distance between the eyebrow and acupoint LEDs 1002 and the skin is 2mm to 5mm; the limit distance of 1mm between the LED chipset 1 and the eyelid is limited by the forced eye closure control distance hair 201;

[0058] The utility model also includes a lithium battery and a charging circuit 16, a boost circuit 17, a single-chip microcomputer 18 and a constant current control circuit 19, and a keyboard display and voice reminder circuit 20; the single-chip microcomputer 18 is respectively connected to the lithium battery and the charging circuit 16, the constant current control circuit 19 and the keyboard display and voice reminder circuit 20; the constant current control circuit 19 is electrically connected to the red light chip and the near-infrared light chip, and the red light chip and the near-infrared light chip are electrically connected to the boost circuit 17.

[0059] The function of the utility model is achieved in this way: Figure 4 The pupil LED chipset 1 of the middle eye is composed of 20 14mil red light chips with a total maximum light power of 200mW. The eyelash LED chipset 101 and the meibomian gland LED chipset 102 are composed of 10 red light chips. The eyebrow and acupoint LED 1002 are composed of 10 2835 surface mount LEDs. Except for these 10 2835 surface mount LEDs, the rest are COB (chip on board) die bonding and packaging. The center spacing of the die bonding chips is 1mm to 3mm, and the center distance of the pupil LED chipset 1 is 1mm. The length and width of the chip are both 0.35mm, the p-layer is gold-plated, and the light power of a single chip is about 10mW at the rated current. The maximum power density contribution of a single chip at 2mm is about 80mW / cm 2 , which is close to the PBM optical parameter value of HeNe laser and lower than the optical power density of AM1.5 sunlight, but it is divergent light. Since the chip center spacing is 1mm and the pupil diameter is about 2mm under strong light, the light from about 3 chips reaches the fovea directly, which is equivalent to 1.5mW / cm 2 The parallel light is incident from the naked eye cornea, and the maximum power density of the red sun that can be viewed directly in the morning is about 2mW / cm 2 Therefore, even occasional exposure to the naked eye should be within the safe range; further analysis shows that the total optical power of the three chips is 30mW, all of which enter the eye, and the total retinal area is about 18cm 2 , so the average power density is 1.6mW / cm2, which is still safe compared with the sunlight that obliquely enters the pupil in life; when the utility model irradiates the ocular surface, HeNe laser is used as a reference. The 1mW HeNe laser has a spot size of 1mm, so the power density is 127mW / cm 2 , so the power density of a single LED chip at 2mm is 80mW / cm 2 , the power density at 1mm is 320mW / cm 2 , it can be seen that as long as the irradiation is close, the optical power density of LED can fully reach the reference value of laser, and the irradiation area is much larger than that of HeNe laser, so the effect of PBM should be better than that of HeNe laser and LD;

[0060] The pupil LED chipset 1 of the utility model achieves all-round stereoscopic illumination of the eye through the eyelids, which has been proven to be intrinsically safe and absolutely safe, and has more advantages than the Elsing-type light feeding devices in terms of the total light energy fed into the eye, providing a new intraocular PBM mode, namely the non-parallel light mode.

[0061] The utility model includes 100 14mil red light chips, 50 chips for each eye, each rated power is 40mW, so the total power is 4W, and it is measured that only half current is needed, so the total power is 2W, and the 3000mAh lithium battery has an energy of 3×3.6×3600J, so it can be used for 5.4h. If it is used for 5 minutes each morning and evening, it can be used for 32.4 days in total. Under the control of the single-chip microcomputer 18, partition irradiation can also be achieved. For example, if thick eyelashes are not needed, the eyelash LED chipset 101 can be turned off.

[0062] In order to ensure that the chip surface temperature is lower than 45 degrees, COB packaging is adopted, and the pads of the pupil aluminum substrate 2 are all thickly gold-plated, and its price is much more expensive than ordinary aluminum substrates; considering the development cost, the pupil aluminum substrate 2 has adopted a universal portable design, and its area is designed to be as small as possible, but it can encapsulate 3 application chips at the same time; later, if the chip surface temperature can be guaranteed to be low enough and the cost is controllable, the functions of the pupil aluminum substrate 2 can be merged into the lens aluminum substrate 3, and even the functions of the eyebrow and acupoint aluminum substrate 1001 can be incorporated into the lens aluminum substrate 3. At this time, the eyebrow and acupoint LEDs can be packaged in the form of pins, and by designing the pin height, it is ensured that all LED chip surfaces are close to irradiation; similar changes, including changing the COB process to the surface mount process, are common changes in the LED industry and will not be repeated.

[0063] In actual operation, for personalization, the aluminum substrate 3 can also be replaced by a plain aluminum sheet. The pupil aluminum substrate 2 is directly fixed to the aluminum substrate 3 with small screws, and the holes thereon are opened using a drilling template. The positions of the holes are determined by the wearer's facial parameters such as pupil distance and nose bridge height.

[0064] Example 1

[0065] This embodiment provides a closed-eye stereoscopic LED device in the form of VR glasses, which is mounted on a lens base 10, and the lens base 10 is mounted on a main frame 21 of the VR glasses. Figures 1 to 4 , including pupil LED chipset 1, eyelash LED chipset 101, meibomian gland LED chipset 102, eyebrow and acupoint LED 1002; wherein the pupil LED chipset 1 includes red light chips and near-infrared light chips with a wavelength range of 625nm to 960nm, and only high-efficiency red light chips with gold reflectors on the market are selected.

[0066] The pupil LED chipset 1, eyelash LED chipset 101 and meibomian gland LED chipset 102 are mounted on the pupil aluminum substrate 2; the pupil aluminum substrate 2 is mounted on the lens aluminum substrate 3; the eyebrow and acupoint LEDs 1002 are mounted on the eyebrow acupoint aluminum substrate 1001; the lens aluminum substrate 3 and the eyebrow acupoint aluminum substrate 1001 are mounted on the lens base 10; the thickness of the pad 401 and the lens base 10 is used to adjust the vertical distance from all chip surfaces to the respective skins. In this embodiment, the distance from the pupil LED chipset 1 to the eyelid is set to 1mm to 3mm, and the distance from the eyebrow and acupoint LEDs 1002 to the skin is 2mm to 5mm; the limit distance of 1mm from the LED chipset 1 to the eyelid is limited by the forced eye closure control distance hair 201;

[0067] This embodiment also includes a lithium battery and charging circuit 16, a boost circuit 17, a single-chip microcomputer 18 and a constant current control circuit 19, and a keyboard display and voice reminder circuit 20; the single-chip microcomputer 18 is respectively connected to the lithium battery and charging circuit 16, the constant current control circuit 19 and the keyboard display and voice reminder circuit 20; the constant current control circuit 19 is electrically connected to the red light chip and the near-infrared light chip, and the red light chip and the near-infrared light chip are electrically connected to the boost circuit 17.

[0068] The maximum optical power density of each irradiated part in this embodiment is roughly as follows: 80 mW / cm at the eye surface 2 mm away from the light source surface 2 ; With eyes closed, the maximum power density at the fovea is 11mW / cm 2 , which is about 1 / 8 of what the naked eye sees when looking at the red sun; but the total red light power fed into the eye is 0.63mW, which is 10 times that when looking at the red sun in the morning. This 10 times red light power is distributed over the entire inner wall of the eyeball, which is very safe.

[0069] Example 2

[0070] See also Figure 5 As shown, similar to embodiment 1, except that the mirror holder 10 is adapted to Figure 5 The binocular microscope-style main frame 22 is equipped with a display screen, which is more convenient to operate and is also convenient for charging light feeding in the visual insurance shop. The lens holder 10 is preferably made of aluminum alloy light material with good thermal conductivity, and cooling fins are added when necessary; the finished product is cast with transparent colloid to protect all exposed light sources and circuits. The transparent colloid is preferably a red transparent colorant on the market. The transparent glue is preferably epoxy glue or silicone. The forced eye-closing distance control hair 201 can be cast into the colloid; another way to achieve beauty and protection is to add a layer of red transparent film cover on the surface of the light source, and make it into one with the forced eye-closing distance control hair 201, and embed it into the lens barrel. This is both beautiful and has no exposed wires and photoelectric components, thus giving people a sense of security.

[0071] Example 3

[0072] Similar to Example 1, but made into a frameless glasses form, the pupil aluminum substrate 2 can be moved up and down to align with the pupil, and the pad 401 is used to adjust the distance from the chip surface to the eyelid; it is better to use a pinned package for the eyebrow and acupoint LEDs 1002, and the irradiation distance can be adjusted by adjusting the height of the pins; the length of the temples and the height of the nose pads can be used to adjust the distance from the chip surface to the eyelids; when the irradiation distance is adjusted by the length of the nose pads and the temples, the pupil aluminum substrate 2 can be merged into the lens aluminum substrate 3.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A closed-eye stereoscopic LED device, characterized in that: include: A pupil LED chip set (1), the pupil LED chip set (1) comprising a red light chip and a near infrared light chip with a wavelength range of 625 nm to 960 nm; A pupil aluminum substrate (2), on which a pupil LED chip group (1), an eyelash LED chip group (101) and a meibomian gland LED chip group (102) are fixedly mounted, and a forced eye closure auxiliary component is provided on the pupil aluminum substrate (2); A lens aluminum substrate (3), wherein a pupil aluminum substrate (2) is movably mounted on the lens aluminum substrate (3); A mirror base (10), on which a lens aluminum substrate (3) and an eyebrow acupoint aluminum substrate (1001) are fixedly mounted; The invention also includes an integrated lithium battery and charging circuit (16), a boost circuit (17), a single-chip microcomputer (18), a constant current control circuit (19), and a keyboard display and voice reminder circuit (20); the single-chip microcomputer (18) is electrically connected to the lithium battery and charging circuit (16), the constant current control circuit (19), and the keyboard display and voice reminder circuit (20); the constant current control circuit (19) is electrically connected to the pupil LED chipset (1), and the pupil LED chipset (1) is electrically connected to the boost circuit (17).

2. The closed-eye stereoscopic LED device according to claim 1, characterized in that: The center of the pupil LED chipset (1) is aligned with the center of the pupil, the shape of the eyelash LED chipset (101) is aligned with the arc of the eye suture when the eyes are closed; the meibomian gland LED chipset (102) and the pupil LED chipset (1) are aligned with the meibomian glands.

3. The closed-eye stereoscopic lighting LED device according to claim 1, characterized in that: The lens aluminum substrate (3) and the pupil aluminum substrate (2) are provided with cushion blocks (401).

4. The closed-eye stereoscopic LED device according to claim 3, characterized in that: The number of chips in the pupil LED chipset (1) is greater than 10, the total optical power is greater than 100 mW, and the total power consumption is less than 800 mW; The total number of LED chips in the eyelash LED chipset (101), the meibomian gland LED chipset (102), and the eyebrow and acupoint LEDs (1002) is greater than 5, the total optical power is greater than 50 mW, and the total power consumption is less than 400 mW.

5. The closed-eye stereoscopic lighting LED device according to claim 1, characterized in that: The glasses holder (10) comprises a common glasses frame, a VR glasses frame, a binocular eyepiece holder, and frameless glasses adapted by utilizing the strength of the lens aluminum substrate (3).

6. The closed-eye stereoscopic LED device according to claim 5, characterized in that: The mirror base (10) is made of a lightweight aluminum alloy material with good thermal conductivity.

7. The closed-eye stereoscopic LED device according to claim 1, characterized in that: The lens aluminum substrate (3) is provided with a slide groove (6) and a slider (4), and the pupil aluminum substrate (2) is connected to the slider (4) via upper and lower adjustment screws (5).

8. The closed-eye stereoscopic LED device according to claim 1, characterized in that: The forced eye-closing auxiliary component is a forced eye-closing distance control hair (201).

Images