Light-emitting device for quickly relieving eyestrain, optical system and equipment

Abstract

The invention relates to the technical field of eye protection illumination, in particular to a light-emitting device, an optical system and equipment for rapidly relieving eyestrain. The light-emitting device comprises a light-emitting unit, the light-emitting unit is used for emitting light in a preset wavelength range, and the light emitted by the light-emitting device conforms to a preset light energy intensity range; the preset wavelength range is 640 nm to 900 nm; the preset light energy intensity range is 2mW / cm < 2 >-60mW / cm < 2 >. According to the light-emitting device capable of rapidly relieving the eyestrain, the effect of rapidly relieving the eyestrain can be achieved, and the phenomena of blurred vision and transient myopia generated when people use eyes for a long time or stay under an artificial illumination light source for a long time are greatly improved; experiments prove that the light-emitting device capable of rapidly relieving eyestrain has the advantages of being rapid in effect and remarkable in effect, the effect of relieving eyestrain can be achieved only by irradiating for 120-180 seconds, and the requirement of people for fast-paced life can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of eye protection lighting, and in particular to a light emitting device, an optical system and equipment for quickly relieving eye fatigue. Background Art

[0002] In daily life, people spend more and more time indoors. LED white light sources are often used in indoor lighting. Due to the bottleneck of LED packaging, the white light it emits has always been far from the natural spectrum. Studying and working under the light emitted by this light source for a long time may cause the ciliary muscle to continue to contract, which is easy to cause accommodation spasm, or lead to a decrease in the eye's accommodation ability, which is specifically manifested as blurred vision and unclear vision, which is often called eye fatigue. Eye fatigue not only brings short-term discomfort to people, but continuous eye fatigue may also aggravate myopia or other vision problems, which has a great impact on human health.

[0003] After feeling eye fatigue, people need to stop using their eyes immediately and rest for about 10 to 15 minutes to relax and rest their eyes. However, in today's fast-paced lifestyle, people find it difficult to stop working or studying in time for various reasons, and often cannot spare enough rest time. In the long run, this will only lead to worsening myopia. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the background technology and to provide a light emitting device, an optical system and equipment for quickly relieving eye fatigue, which can relieve eye fatigue in a short time and relax the eyes.

[0005] In a first aspect, the present invention provides a light-emitting device for quickly relieving eye fatigue, comprising a light-emitting unit, the light-emitting unit being used to emit light in a preset wavelength range, and the light emitted by the light-emitting device conforms to a preset light energy intensity range;

[0006] The preset wavelength range is: 640nm~900nm;

[0007] The preset light energy intensity range is: 2mW / cm 2 ~60mW / cm 2 .

[0008] The present invention provides a light-emitting device for quickly relieving eye fatigue. The light-emitting unit emits light within a specific preset wavelength range and a preset light energy intensity range, and irradiates the light to the human eyes, which can quickly relieve eye fatigue and greatly improve the blurred vision and temporary myopia caused by long-term use of the eyes or long-term exposure to artificial lighting sources. It has been verified by experiments that the light-emitting device for quickly relieving eye fatigue described in the present invention has the characteristics of fast effect and significant effect. It only needs 120 seconds to 180 seconds of irradiation to achieve the effect of relieving eye fatigue, which can meet the needs of people's fast-paced life.

[0009] As a preferred embodiment of the present invention, the light emitted by the light emitting device meets the preset light energy and heat intensity range; the preset light energy and heat intensity range is: 10J / cm 2 ~40J / cm 2 .

[0010] As a preferred embodiment of the present invention, the light emitting device emits pure red light in the wavelength range of 640nm to 700nm.

[0011] As a preferred embodiment of the present invention, the light emitting device emits pure red light in the wavelength range of 640nm to 660nm.

[0012] As a preferred embodiment of the present invention, the light emitting device emits pure red light in the wavelength range of 660nm to 700nm.

[0013] As a preferred embodiment of the present invention, the light emitting device emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

[0014] As a preferred solution of the present invention, the light emitting unit is capable of emitting light of at least one wavelength.

[0015] As a preferred embodiment of the present invention, the light emitting unit is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source.

[0016] As a preferred embodiment of the present invention, the light emitting device further comprises:

[0017] A housing including an inner cavity and an opening communicating with the inner cavity;

[0018] A light board, located in the inner cavity, and the light emitting unit is arranged on the light board;

[0019] A driving controller, located in the inner cavity, and connected to the light-emitting unit;

[0020] A reflective cup, located at the light-emitting side of the light-emitting unit, and used to adjust the beam angle;

[0021] A transparent cover plate is located on the light-emitting side of the reflective cup and covers the opening.

[0022] In a second aspect, the present invention provides an optical system for quickly relieving eye fatigue, comprising a light-emitting device for quickly relieving eye fatigue as described above, wherein the light energy intensity of the light-emitting device in a defined light energy intensity zone conforms to the preset light energy intensity range; wherein the defined light energy intensity zone is located on the optical path from the light-emitting unit to the eyeball placement position, the defined light energy intensity zone is 20 to 30 mm away from the eyeball placement position, and the eyeball placement position is for human eye placement.

[0023] In a third aspect, the present invention provides a device for quickly relieving eye fatigue, including the light-emitting device for quickly relieving eye fatigue as described above, and also including: a first structure for installing the light-emitting device.

[0024] As a preferred solution of the present invention, it also includes: a second structure for adjusting the relative position and distance between the light emitting device and the eyeball placement position.

[0025] In a fourth aspect, the present invention provides a device for quickly relieving eyestrain, wherein the device for quickly relieving eyestrain is at least one of a desk lamp, an eye mask, a floor lamp and a flashlight, and the device at least includes a light-emitting device for quickly relieving eyestrain as described in any one of claims 1-9.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention provides a light-emitting device for quickly relieving eye fatigue. The light-emitting unit emits light within a specific preset wavelength range and a preset light energy intensity range, and irradiates the light to the human eyes, which can quickly relieve eye fatigue and greatly improve the blurred vision and temporary myopia caused by long-term use of the eyes or long-term exposure to artificial lighting sources. It has been verified by experiments that the light-emitting device for quickly relieving eye fatigue described in the present invention has the characteristics of fast effect and significant effect. It only needs 120 seconds to 180 seconds of irradiation to achieve the effect of relieving eye fatigue, which can meet the needs of people's fast-paced life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the optical system described in Example 2 of the present invention;

[0029] Figure 2 This is a schematic diagram of a disassembled structure of a light emitting device according to Embodiment 1 of the present invention;

[0030] Figure 3 This is a spectrum diagram of the 650nm single wavelength light source described in Example 3 of the present invention;

[0031] Figure 4 This is a spectrum diagram of the 640nm-660nm wide spectrum light source described in Example 5 of the present invention;

[0032] Figure 5 This is a spectrum diagram of a 4000K color temperature ordinary light source + a 650nm red light source described in Comparative Example 2 of the present invention;

[0033] Figure 6 This is a spectrum diagram of the full-spectrum light source with a color temperature of 4000K + a red light source with a wavelength of 650nm described in Comparative Example 3 of the present invention.

[0034] Markings in the figure:

[0035] 1-light-emitting unit; 2-housing; 21-inner cavity; 22-opening; 3-driving controller; 4-light board; 5-reflective cup; 6-transparent cover; 7-defining light energy intensity area; 8-eyeball placement position. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0037] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0039] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0040] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0041] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0042] Example 1

[0043] The present embodiment provides a light-emitting device for quickly relieving eye fatigue, including a light-emitting unit 1, wherein the light-emitting unit 1 is used to emit light within a preset wavelength range, and the light emitted by the light-emitting device conforms to a preset light energy intensity range.

[0044] Specifically, the preset wavelength range is: 640nm~900nm.

[0045] Specifically, the preset light energy intensity range is: 2mW / cm 2 ≤P≤60mW / cm 2 , P is the light energy intensity.

[0046] The present embodiment provides a light-emitting device for quickly relieving eye fatigue. The light-emitting unit 1 emits light within a specific preset wavelength range and a preset light energy intensity range, and irradiates the light to the human eye, which can quickly relieve eye fatigue and greatly improve the blurred vision and temporary myopia caused by long-term use of the eyes or long-term exposure to artificial lighting sources. It has been verified by experiments that the light-emitting device for quickly relieving eye fatigue described in the present embodiment has the characteristics of fast effect and significant effect. It only takes 120 seconds to 180 seconds of irradiation to achieve the effect of relieving eye fatigue, which can meet the needs of people's fast-paced life.

[0047] Preferably, the light emitted by the light emitting device meets the preset light energy and heat intensity range; the preset light energy and heat intensity range is: 10J / cm 2 ≤Q≤40J / cm 2 , Q is the light energy intensity; J / cm2 That is: Joule / cm 2 .

[0048] Preferably, the light emitting unit 1 can emit light of one or more wavelengths within a specific wavelength range.

[0049] Further preferably, the light emitting unit 1 is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source.

[0050] A single-wavelength light source refers to a light source that emits light mainly at a single wavelength or within a very narrow wavelength range.

[0051] A dual-wavelength light source refers to a light source that can emit two different wavelengths of light at the same time.

[0052] A broad spectrum light source refers to a light source that emits light covering a wide wavelength range.

[0053] In some embodiments, the light emitting device emits pure red light in the wavelength range of 640nm to 700nm.

[0054] In this embodiment, the light emitting unit 1 can emit light of one or more wavelengths within the wavelength range of 640nm to 700nm; for example, the light emitting unit 1 is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source with a light wavelength within the range of 640nm to 700nm.

[0055] Preferably, the light emitting device emits pure red light in the wavelength range of 640nm to 660nm.

[0056] In this embodiment, the light emitting unit 1 can emit light of one or more wavelengths within the wavelength range of 640nm to 660nm; for example, the light emitting unit 1 is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source with a light emission wavelength within the range of 640nm to 660nm.

[0057] Preferably, the light emitting device emits pure red light in the wavelength range of 660nm to 700nm.

[0058] In this embodiment, the light emitting unit 1 can emit light of one or more wavelengths within the wavelength range of 660nm to 700nm; for example, the light emitting unit 1 is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source with a light wavelength within the range of 660nm to 700nm.

[0059] In some embodiments, the light emitting device emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

[0060] According to the definition of the International Commission on Illumination (CIE), the wavelength range of visible light is 380nm to 780nm, and the light emitted by the light-emitting device at 700nm to 900nm can be pure red light, infrared light, or red light + infrared light.

[0061] In this embodiment, the light emitting unit 1 can emit light of one or more wavelengths within the wavelength range of 700nm to 900nm; for example, the light emitting unit 1 is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source with a light wavelength within the range of 700nm to 900nm.

[0062] In some implementations, see Figure 2 The light-emitting device also includes a shell 2, a drive controller 3, a light board 4, a reflective cup 5 and a transparent cover 6; wherein: the shell 2 has an inner cavity 21 and an opening 22 connected to the inner cavity 21, the light board 4 and the drive controller 3 are located in the inner cavity 21, the light-emitting unit 1 is arranged on the light board 4, and the drive controller 3 is electrically connected to the light-emitting unit 1.

[0063] The reflective cup 5 is located on the light emitting side of the light emitting unit 1 , or can be located in the inner cavity 21 , and is used to adjust the beam angle of the light beam emitted by the light emitting unit 1 ; the transparent cover plate 6 is located on the light emitting side of the reflective cup 5 , and can cover the opening 22 .

[0064] Specifically, the driving controller 3 and the light emitting unit 1 may be connected via a wire.

[0065] Specifically, the light emitting unit 1 may be an LED light source, and the number of the light emitting unit 1 may be one or more.

[0066] Components such as the driving controller 3 and the light board 4 can be placed into the inner cavity 21 of the shell 2 through the opening 22; the reflective cup 5 can be a trumpet-shaped structure, including a light entrance hole arranged at the small end, and a light exit hole arranged at the large end, the light entrance hole can be opposite to the light board 4, and the light exit hole can be opposite to the transparent cover 6.

[0067] Example 2

[0068] The present embodiment provides an optical system for quickly relieving eye fatigue, including a light-emitting device for quickly relieving eye fatigue as described in Example 1, wherein the light energy intensity of the light-emitting device in a defined light energy intensity zone 7 meets a preset light energy intensity range; wherein the defined light energy intensity zone 7 is located on the optical path from the light-emitting unit 1 to the eyeball placement position 8, the defined light energy intensity zone 7 is 20 to 30 mm away from the eyeball placement position, and the eyeball placement position 8 is for human eye placement.

[0069] During normal use, the position and posture of the light-emitting device can be adjusted, or the position and posture of the human eye can be adjusted, so that the light emitted by the light-emitting device can be directed to the human eyeball, and the relative position relationship between the light-emitting device and the human eyeball conforms to the relative position relationship between the light-emitting device and the eyeball placement position 8.

[0070] The light energy intensity zone 7 is defined as a hypothetical area for measuring the light energy intensity and the light energy thermal intensity. When manufacturing a light-emitting device, a measuring device can be set in the light energy intensity zone 7 to measure the light energy intensity and the light energy thermal intensity at this position, so as to assist in adjusting the power and other parameters of the light-emitting unit 1, so that the light energy intensity P defined in the light energy intensity zone 7 meets the preset light energy intensity range, and the light energy thermal intensity Q defined in the light energy intensity zone 7 meets the preset light energy thermal intensity range; when the light-emitting device is used, the light beam emitted by the light-emitting device can be directed to the human eye located in the eyeball placement position 8.

[0071] Figure 1 The schematic diagram of the structure of the optical system of this embodiment is shown. In normal use, the light energy intensity P measured in the light energy intensity area 7 is within the preset light energy intensity range: 2mW / cm 2 ≤P≤60mW / cm 2 ; The light energy heat intensity Q meets the preset light energy heat intensity range: 10J / cm 2 ≤Q≤40J / cm 2 ; The distance between the eyeball of the tested person and the defined light energy intensity zone 7 is 20 to 30 mm.

[0072] The tests of Examples 3-13 were carried out based on the structural schematic diagram of the optical system of this embodiment, the light energy intensity and the light energy heat intensity.

[0073] Example 3

[0074] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 640nm to 660nm.

[0075] Specifically, a single-wavelength light source with a light emission wavelength of 650 nm was selected for testing. The relative spectrum of the light source is shown in FIG. Figure 3 The test time is 12:30 noon, for 7 consecutive days, the light exposure time is 120 seconds, and the age range of the test subjects is 12-15 years old; the test data of test subjects 1-8 are as follows in Table 1:

[0076]

[0077] It can be seen from Table 1 above that for teenagers aged 12 to 15, using the light-emitting device of this embodiment to illuminate the eyeballs for 120 seconds at 12:30 noon during the day, a significant improvement in vision can be observed.

[0078] The binocular vision in this embodiment and other embodiments is preferably measured using a vision chart.

[0079] Example 4

[0080] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 640nm to 660nm.

[0081] Specifically, a dual-wavelength light source with a wavelength of 650nm+660nm was selected for testing. The test time was 17:30 in the afternoon for 7 consecutive days, the illumination time was 120 seconds, and the age range of the tested persons was 12-15 years old; the test data of the tested persons 1-8 are as follows in Table 2:

[0082]

[0083] It can be seen from Table 2 above that for teenagers aged 12 to 15, using the light-emitting device of this embodiment to illuminate the eyeballs for 120 seconds at 17:30 in the afternoon can observe a significant improvement in vision.

[0084] Example 5

[0085] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 640nm to 660nm.

[0086] Specifically, a wide spectrum light source with a light emission wavelength of 640nm to 660nm is selected for testing. The half-wave width of the wide spectrum light source is ≥50nm. The absolute spectrum of the light source is as follows: Figure 4 The test time is 21:30 in the evening for 7 consecutive days, the light exposure time is 120 seconds, and the age range of the test subjects is 12-15 years old; the test data of test subjects 1-8 are as shown in Table 3:

[0087]

[0088] It can be seen from Table 3 that for teenagers aged 12 to 15, using the light-emitting device of this embodiment to illuminate the eyeballs for 120 seconds at 21:30 in the evening can observe a significant improvement in vision.

[0089] Example 6

[0090] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 640nm to 660nm.

[0091] Specifically, a wide spectrum light source with a wavelength of 640nm to 660nm was selected for testing, and the half-wave width of the wide spectrum light source was ≥50nm. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 120 seconds, and the age range of the tested persons was 12-15 years old; the test data of tested persons 1-8 are as follows in Table 4:

[0092]

[0093] It can be seen from Table 4 above that for teenagers aged 12 to 15, using the light-emitting device of this embodiment to illuminate the eyeballs for 120 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0094] Example 7

[0095] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 660nm to 700nm.

[0096] Specifically, a single-wavelength light source with a wavelength of 670nm was selected for testing. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 160 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 5:

[0097]

[0098] It can be seen from Table 5 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeball for 160 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0099] Example 8

[0100] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 660nm to 700nm.

[0101] Specifically, a single-wavelength light source with a wavelength of 670nm was selected for testing. The test time was 16:00 in the afternoon for 7 consecutive days, the illumination time was 160 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 6:

[0102]

[0103] It can be seen from Table 6 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeball for 160 seconds at 16:00 in the afternoon can observe a significant improvement in vision.

[0104] Example 9

[0105] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 660nm to 700nm.

[0106] Specifically, a dual-wavelength light source with a wavelength of 670nm+690nm was selected for testing. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 160 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 7:

[0107]

[0108] It can be seen from Table 7 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeball for 160 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0109] Example 10

[0110] On the basis of Example 2, the light emitting device of this example emits pure red light in the wavelength range of 660nm to 700nm.

[0111] Specifically, a wide spectrum light source with a wavelength of 670nm to 700nm was selected for testing, and the half-wave width of the wide spectrum light source was ≥80nm. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 180 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 8:

[0112]

[0113] It can be seen from Table 8 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeballs for 160 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0114] By comparing and analyzing Example 5 and Example 6, and Example 7 and Example 8, it is found that the increase obtained by using the light-emitting device to irradiate the eyeball at 8:30 in the morning is significantly higher, that is, 8:30 in the morning and the time period nearby may be the golden period for using the light-emitting device for irradiation.

[0115] Embodiment 11

[0116] On the basis of Example 2, the light emitting device of this example emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

[0117] Specifically, a single-wavelength light source with a wavelength of 710nm was selected for testing. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 150 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 9:

[0118]

[0119] It can be seen from Table 9 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeballs for 150 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0120] Example 12

[0121] On the basis of Example 2, the light emitting device of this example emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

[0122] Specifically, a single-wavelength light source with a wavelength of 760nm was selected for testing. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 120 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 10:

[0123]

[0124] It can be seen from Table 10 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeballs for 120 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0125] Example 13

[0126] On the basis of Example 2, the light emitting device of this example emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

[0127] Specifically, a single-wavelength light source with a wavelength of 900nm was selected for testing. The test time was 8:30 in the morning for 7 consecutive days, the illumination time was 120 seconds, and the age range of the tested persons was 40-65 years old; the test data of the tested persons 9-16 are as follows in Table 11:

[0128]

[0129] It can be seen from Table 11 above that for middle-aged and elderly people between the ages of 40 and 65, using the light-emitting device of this embodiment to illuminate the eyeball for 120 seconds at 8:30 in the morning can observe a significant improvement in vision.

[0130] Comparative Example 1

[0131] In order to compare and verify the effects of the above embodiments, this comparative example uses an ordinary light source with a color temperature of 4000K to illuminate the tested persons 1-8, and observes the binocular vision after illumination. It should be noted that this comparative example is tested in October 2023, which is one year before the test date of Examples 3, 4, 5, and 6; specifically, the test time of this comparative example is in the time period of 19:30 to 23:30 in the evening, and the illumination time is 120 minutes. The test data is as shown in Table 12 below:

[0132]

[0133] It can be seen from Table 12 above that after long-term exposure to ordinary light sources, the test subjects 1-8 all experienced a temporary decrease in vision, confirming that long-term exposure to ordinary light sources does have an impact on vision. Compared with the test data of Examples 3, 4, 5, and 6, it is found that the improvement in vision of the test subjects 1-8 after exposure to the light-emitting device described in this application is obtained on the basis of their normal vision.

[0134] Comparative Example 2

[0135] In order to compare and verify the beneficial effects of the light-emitting device described in the present application, this comparative example uses a common light source with a color temperature of 4000K + a red light source with a wavelength of 650nm to irradiate the test persons 1-8, and observe the binocular vision after illumination. It should be noted that this comparative example was tested in October 2023, which is one year before the test date of Examples 3, 4, 5, and 6; specifically, the test time of this comparative example is from 10:00 to 11:30 in the morning, and the spectrum of the light source is as shown in FIG. Figure 5 As shown, the illumination time is 90 minutes, and the test data is as follows

[0136] Table 13:

[0137]

[0138] It can be seen from Table 13 above that the mixed light emitted by the ordinary light source and the red light source does not have the effect of quickly improving vision.

[0139] Comparative Example 3

[0140] In order to compare and verify the beneficial effects of the light-emitting device described in the present application, this comparative example uses a full-spectrum light source with a color temperature of 4000K + a red light source with a wavelength of 650nm to irradiate the test persons 1-8, and observe the binocular vision after illumination. It should be noted that this comparative example was tested in October 2023, which is one year before the test date of Examples 3, 4, 5, and 6; specifically, the test time of this comparative example is from 15:00 to 16:30 in the afternoon, and the spectrum of the light source is as shown in FIG. Figure 6 As shown, the illumination time is 90 minutes, and the test data is as follows

[0141] Table 14:

[0142]

[0143] It can be seen from Table 14 above that the mixed light emitted by the full-spectrum light source and the red light source does not have the effect of quickly improving vision. Compared with the data of Comparative Example 2, the fact that some of the tested persons did not experience a decrease in vision may be only caused by the full-spectrum light source.

[0144] Embodiment 14

[0145] This embodiment provides a device for quickly relieving eye fatigue, based on the optical system for quickly relieving eye fatigue as described in Embodiments 2-13, including the light-emitting device for quickly relieving eye fatigue as described in Embodiment 1, and also including a first structure for installing the light-emitting device.

[0146] Preferably, it also includes a second structure for adjusting the relative position and distance between the light emitting device and the eyeball placement position 8.

[0147] In some implementations, the first structure and the second structure are the same structure.

[0148] The eyeball placement position 8 is the position of the eyeball when the user normally wears or uses the device described in this embodiment. Preferably, in normal use, the first structure and / or the second structure can make the light emitting device stationary relative to the human eyeball.

[0149] Embodiment 15

[0150] This embodiment provides a device for quickly relieving eyestrain. Based on Embodiment 14, the device for quickly relieving eyestrain is at least one of a desk lamp, an eye mask, a floor lamp and a flashlight, and the device includes a light-emitting device for quickly relieving eyestrain as described in Embodiment 1.

[0151] If the device is a desk lamp, the first structure may be a base and a support arm of the desk lamp, and the second structure may be a human head fixer.

[0152] If the device is an eye mask, the first structure may be the eye mask body, and the second structure may be a strap connected to the eye mask body.

[0153] If the device is a floor lamp, the first structure may be a base and a support arm of the floor lamp, and the second structure may be a human head fixer.

[0154] If the device is a flashlight, the first structure may be the flashlight body, and the second structure may be an end surface protruding from the light-emitting surface of the flashlight body. When in use, the end surface may abut the user's eye socket, thereby limiting the distance between the light-emitting device and the human eyeball.

[0155] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-emitting device for quickly relieving eye fatigue, characterized in that: It comprises a light-emitting unit (1), the light-emitting unit (1) is used to emit light in a preset wavelength range, and the light emitted by the light-emitting device conforms to a preset light energy intensity range; The preset wavelength range is: 640nm~900nm; The preset light energy intensity range is: 2mW / cm 2 ~60mW / cm 2 .

2. The light-emitting device for rapidly relieving eye fatigue according to claim 1, characterized in that: The light emitted by the light emitting device conforms to a preset light energy and heat intensity range; The preset light energy thermal intensity range is: 10J / cm 2 ~40J / cm 2 .

3. The light emitting device for rapidly relieving eye fatigue according to claim 1, characterized in that: The light emitting device emits pure red light in the wavelength range of 640nm to 700nm.

4. The light emitting device for rapidly relieving eye fatigue according to claim 3, characterized in that: The light emitting device emits pure red light in the wavelength range of 640nm to 660nm.

5. The light emitting device for rapidly relieving eye fatigue according to claim 3, characterized in that: The light emitting device emits pure red light in the wavelength range of 660nm to 700nm.

6. The light emitting device for rapidly relieving eye fatigue according to claim 1, characterized in that: The light emitting device emits red light and / or infrared light in the wavelength range of 700nm to 900nm.

7. The light-emitting device for quickly relieving eye fatigue according to any one of claims 1 to 6, characterized in that: The light emitting unit (1) is capable of emitting light of at least one wavelength.

8. The light emitting device for rapidly relieving eye fatigue according to claim 7, characterized in that: The light emitting unit (1) is a single-wavelength light source, a dual-wavelength light source or a wide-spectrum light source.

9. The light-emitting device for quickly relieving eye fatigue according to any one of claims 1 to 6, characterized in that: Also includes: A housing (2) comprising an inner cavity (21) and an opening (22) communicating with the inner cavity (21); A light board (4) is located in the inner cavity (21), and the light-emitting unit (1) is arranged on the light board (4); A drive controller (3) is located in the inner cavity (21), and the drive controller (3) is connected to the light-emitting unit (1); A reflective cup (5), located on the light-emitting side of the light-emitting unit (1), and used for adjusting the light beam angle; A transparent cover plate (6) is located on the light-emitting side of the reflective cup (5) and covers the opening (22).

10. An optical system for quickly relieving eye fatigue, characterized in that: It comprises a light emitting device for quickly relieving eye fatigue as described in any one of claims 1 to 9, wherein the light energy intensity of the light emitting device in a defined light energy intensity zone (7) conforms to the preset light energy intensity range; wherein the defined light energy intensity zone (7) is located on the optical path from the light emitting unit (1) to an eyeball placement position (8), the defined light energy intensity zone (7) is 20 to 30 mm away from the eyeball placement position, and the eyeball placement position (8) is for human eye placement.

11. A device for quickly relieving eye fatigue, characterized in that: It comprises a light-emitting device for quickly relieving eye fatigue as described in any one of claims 1 to 9, and also comprises: a first structure for installing the light-emitting device.

12. The device for rapidly relieving eye fatigue according to claim 11, characterized in that: Also includes: A second structure for adjusting the relative position and distance between the light emitting device and the eyeball placement position (8).

13. A device for quickly relieving eye fatigue, characterized in that: The device for quickly relieving eyestrain is at least one of a desk lamp, an eye mask, a floor lamp and a flashlight, and the device at least includes a light-emitting device for quickly relieving eyestrain as described in any one of claims 1-9.

Images