WO2021012544A1

WO2021012544A1 - Movable anti-fatigue glasses clamping piece and manufacturing method therefor

Info

Publication number: WO2021012544A1
Application number: PCT/CN2019/120466
Authority: WO
Inventors: 乐孜纯; 董文
Original assignee: 浙江工业大学
Priority date: 2019-07-19
Filing date: 2019-11-25
Publication date: 2021-01-28

Abstract

A movable anti-fatigue glasses clamping piece and a manufacturing method therefor. The movable anti-fatigue glasses clamping piece comprises an anti-fatigue glasses lens body and a clamping buckle (1), wherein the clamping buckle (1) is fixed on the anti-fatigue glasses lens body; the anti-fatigue glasses lens body comprises a light direction adjusting lens (5) for implementing an anti-fatigue function, a protective sheet (2), and a retainer (4); the retainer (4) is provided between the light direction adjusting lens (5) and the protective sheet (2); the light direction adjusting lens (5) is used for deflecting incident light to enable the deflected light to enter human eyes in an approximate parallel light mode and consists of array microprisms; and each microprism unit forming an array in the array microprisms is same. The movable anti-fatigue glasses clamping piece can be used in an eye working state without medicine intake and has characteristics of convenient combination, small size, light weight, and integrated manufacturing.

Description

Movable anti-fatigue eyeglass clip and manufacturing method thereof

Technical field

The present invention relates to the field of optometry, in particular to a movable spectacle clip used for adjusting eye muscles to achieve the purpose of relieving eye fatigue and a manufacturing method thereof.

Background technique

With the rapid popularity of personal computers, tablets, mobile phones and other electronic products in work and entertainment, the number of people who use eyes and the amount of eyes used have increased exponentially, and the eye fatigue phenomenon that follows has also become prominent. Long-term eye fatigue cannot be relieved, and it is easy to cause eye diseases such as refractive errors (myopia or hyperopia), amblyopia, and strabismus; or cause eye discomfort such as dry eyes and astringent eyes. At present, eye fatigue is common in all people who use eyes, but it has a particularly great impact on young people whose eyes are in the process of development. Screening data show that in recent years, the incidence of adolescent refractive errors in my country has continued to soar, with the highest rate of myopia in high school, exceeding 80%. The research and development of technologies and products that can relieve eye fatigue is very necessary for all people who use eyes. For those adolescents with pseudomyopia, timely relief of eye fatigue can slow down the development of myopia and even restore normal vision.

At present, the existing technologies and methods to relieve eye fatigue include: (1) do eye exercises regularly; (2) use eye massagers, such as an existing technology "anti-eye fatigue massager (CN 106361555 A)", Its effect is similar to doing eye exercises; (3) Use medicinal preparations to relieve eye fatigue, such as "eye drops to relieve eye fatigue (CN 109512945 A)". The above methods (1) and (2) are physical methods, without the aid of drugs, work and study must be interrupted during use; method (3) requires long-term intake of pharmaceutical preparations, which inevitably have side effects. The technical method closest to the present invention is "a kind of bionic glasses to avoid eye fatigue (CN 103142348 A)", which uses electronic control to cover one eye regularly, the blocked eye is forced to rest, and the other eye is working monocularly . However, it is normal for the human eyes to see things at the same time to obtain stereo vision and realize the real perception of the external world. Therefore, this method and glasses are not only inconsistent with the normal use of human eyes, and long-term wearing will inevitably affect human eyes Normal functioning of vision and related optic nervous system.

In summary, the existing technologies all have defects and deficiencies such as long-term drug intake; or must work with one eye, which deviates from the normal state of eye use; or must interrupt work or study during use. Therefore, it is urgent to research new technologies and products to meet the urgent needs of eye-users to prevent eye fatigue.

Summary of the invention

In order to overcome the shortcomings and deficiencies of the prior art, the present invention provides a novel anti-fatigue eyeglass clip and its manufacturing method, which can adjust the eye position and train the eye without interrupting normal eye use (that is, seeing both eyes at the same time). The muscle prevents the eyeball from being in a fixed refractive state for a long time, and at the same time prevents the eye muscle from being in a fixed stretched state for a long time, and achieves the anti-fatigue effect by training the eyeball and eye muscle while using the eye. The invention is a purely physical technical method and does not involve the intake of any pharmaceutical preparations. The present invention is mainly aimed at users who have suffered from eye diseases such as myopia, hyperopia, and amblyopia, and wear frame glasses.

The technical solutions adopted by the present invention to solve its technical problems are:

A movable anti-fatigue spectacles clip includes an anti-fatigue spectacle lens body and a clamping buckle, the clamping buckle is fixed on the anti-fatigue spectacle lens main body, and the anti-fatigue spectacle lens body includes an anti-fatigue function The light direction adjusting lens, the protective sheet and the spacer ring, the light direction adjusting lens is used to deflect the incident light so that it enters the human eye in a manner similar to parallel light; the light direction adjusting lens is composed of array microprisms, In the array microprism, each microprism unit constituting the array is the same; the spacer ring is placed between the light direction adjusting lens and the protective sheet.

Further, the structure of the microprism unit on the light direction adjusting lens is represented by the length L of the base and the angle a between the hypotenuse and the base, and the refractive index of the air and the refractive index of the array microprism material are respectively represented by n ₁ And n ₂ indicate that the light passing through the array microprism enters the human eye at an angle b, and the angle b refers to the angle between the light and the y axis;

Preferably, the angle a and the angle b satisfy formula (1):

The value range of the angle b is 0.1° to 6°;

The value of the base length L satisfies formula (2):

e ^{-α·L tan a} ＞85% (2)

In formula (2), α represents the absorption coefficient of the array microlens material.

Furthermore, the edge of the array microprism is perpendicular to the line connecting the pupils of the left and right eyes.

The material of the light direction adjusting lens is an optical plastic with good optical performance in the visible light band, including but not limited to polymethyl methacrylate (PMMA) or polycarbonate (PC).

Furthermore, the side of the light direction adjusting lens with the array microprisms faces the protective sheet.

The protective sheet is a hard optical plastic with high transmittance in the visible light waveband, and its function is to protect the array microprism structure on the optical direction adjustment lens.

The spacer ring is used to isolate the light direction adjusting lens and the parts of the protective sheet, and its function is to prevent the array microprism structure from contacting the protective sheet.

Further, the light direction adjusting lens, the protective sheet, and the spacer ring are provided with 4 symmetrical center pin holes with 90-degree intervals. The 4 pin holes on the light direction adjusting lens, the protective sheet, and the spacer ring are coaxial. The fixing pin is inserted into the pin holes on the light direction adjusting lens, the protective sheet, and the spacer ring to fix the light direction adjusting lens, the protective sheet, and the spacer ring together to form the anti-fatigue eyeglass lens body.

Still further, the thickness of the protective sheet is determined by the strength and optical transmittance during fixation, and the thickness preferably ranges from 0.2 mm to 2.5 mm; its material includes but is not limited to polymethylmethacrylate (PMMA) or polycarbonate (PC) or polypropylene (PP) or polyimide (PI) or polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

Further, the thickness of the spacer ring is determined by the distance between the array microprisms and the protective sheet, and the distance between the array microprisms and the protective sheet preferably ranges from 0.1 mm to 1 mm. The material of the spacer includes but is not limited to optical plastic, metal or alloy materials.

A method for manufacturing a movable anti-fatigue spectacle clip. The movable anti-fatigue spectacle clip comprises an anti-fatigue spectacle lens body and a clamping buckle, the clamping buckle is fixed on the anti-fatigue spectacle lens body, and The anti-fatigue spectacle lens body includes a light direction adjusting lens, a protective sheet, and a spacer ring for realizing an anti-fatigue function, and the light direction adjusting lens is used to deflect incident light so that it enters the human eye as a parallel light; The light direction adjusting lens is composed of array microprisms. In the array microprism, each microprism unit constituting the array is the same; the spacer ring is placed between the light direction adjusting lens and the protective sheet; The manufacturing method includes the following steps:

1) Making a light direction adjusting lens, the light direction adjusting lens is composed of an array microprism, in the array microprism, each microprism unit constituting the array is the same;

2) The spacer ring is placed between the light direction adjusting lens and the protective sheet;

3) The light direction adjusting lens, the protective sheet, and the spacer ring are fixedly assembled to form the movable anti-fatigue eyeglass lens body;

4) Fixing the clamping buckle on the main body of the anti-fatigue glasses to form the movable anti-fatigue glasses clip.

Further, the method further includes the following steps:

5) According to the pupil distance of the user, corresponding to the pupil position of the left and right eyes of the user, make invisible marks on the surface of the fixed and assembled movable anti-fatigue glasses clip; correspondingly, in the nearsightedness or hyperopia glasses that the user is wearing Make invisible marks on the pupil positions of the left and right eyes;

6) Clamp the movable anti-fatigue glasses clip on the myopia or hyperopia glasses that the user is wearing for the left and right eyes, use but not limited to highlight the invisible mark, and align the left and right eye movable anti-fatigue glasses clip respectively The invisible mark on the lens of the glasses that the user is wearing;

7) Fine-tune the clamping position until the object is clear and without ghosting near the photopic distance.

Further, in the step 1), the structure of the microprism unit on the light direction adjusting lens is represented by the length L of the base and the angle a between the hypotenuse and the base, the refractive index of the air and the material of the array microprism The refractive index of is represented by n ₁ and n ₂ respectively. The light passing through the array microprism enters the human eye at an angle b, which refers to the angle between the light and the y axis.

Preferably, the angle a and the angle b satisfy formula (1):

The value range of the angle b is 0.1° to 6°;

The value of the base length L satisfies formula (2):

e ^-α·L ^tan ^a ＞85% (2)

Furthermore, in the step 2), the side of the light direction adjusting lens with the array microprisms facing the protective sheet.

The protective sheet is a hard optical plastic with high transmittance in the visible light band, and its function is to protect the array microprism structure on the optical direction adjustment lens; the thickness of the protective sheet is fixed by the strength and optical The transmittance is determined, and the preferred thickness ranges from 0.2 mm to 2.5 mm; the material of the protective sheet includes but not limited to polymethylmethacrylate (PMMA) or polycarbonate (PC) or polypropylene (PP) or polyimide ( PI) or polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

Further, in the step 2), the spacer ring is used to isolate the light direction adjusting lens and the protective sheet, and its function is to prevent the array microprism structure from contacting the protective sheet; the thickness of the spacer ring is determined by The distance between the array microprisms and the protective sheet determines the distance between the array microprisms and the protective sheet, and the preferred range is 0.1 mm to 1 mm. The material of the spacer includes but is not limited to optical plastic, metal or alloy materials.

Furthermore, in the step 3), the light direction adjusting lens, the protective sheet, and the spacer ring are provided with 4 symmetrical center pin holes with 90-degree intervals. The light direction adjusting lens, the protective sheet, and the spacer ring are The four pin holes are coaxial respectively; the four pin holes on the lens, the protective sheet, and the spacer ring are adjusted to the light direction respectively, and then the fixing pins are inserted for fixed assembly.

Further, in the step 4), the clamping buckle is fixed on the body of the anti-fatigue spectacle lens, and the fixing method includes but not limited to mechanical method (such as screw pin), chemical method (such as bonding )Wait.

Furthermore, in the step 5), the invisible label may be, but is not limited to, a fluorescent invisible label.

The technical idea of the present invention is: using microstructure optical devices to deflect light, present the objects near the photopic distance seen by the eyes at approximately infinity, and realize the refractive state of the eyeball and the pulling of the eye muscles. The adjustment of the state of extension plays the role of regular relaxation and exercise of the eye muscles and eyeballs.

The proposed movable anti-fatigue eyeglass clip is based on a purely physical method and does not involve the intake of drugs. It is convenient to switch between wearing and taking off. It does not need to stop work during use, that is, it can complete the eye muscle and eyeball while using the eye. Relax and exercise to achieve anti-fatigue effects.

The beneficial effects of the present invention are mainly manifested in: 1. Invent a movable anti-fatigue eyeglass clip, which is mainly aimed at users who have suffered from myopia, hyperopia, amblyopia and other eye diseases and wear frame glasses, and cooperate with their existing myopia , Presbyopia glasses; 2. Can be used under the eye state without interruption of work; 3. Based on the principle of light deflection by micro-structured optical devices, it is a purely physical method and does not involve the intake of drugs; 4. Movable devices , Easy to use in combination; 5. Small size, light weight, and integrated production.

Description of the drawings

Figure 1 is a schematic structural diagram of a movable anti-fatigue spectacle clip of the present invention, where 1 represents a clamping buckle.

Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1, where 2 represents a protective sheet, 3 represents a fixing pin, 4 represents a spacer ring, and 5 represents a light direction adjusting lens.

Fig. 3 is a structural schematic diagram of a light direction adjusting lens in a movable anti-fatigue eyeglass clip of the present invention, where x and y represent the horizontal and vertical axes of the coordinate system, L is the length of the base of the microprism unit, and a is The angle between the hypotenuse and the base of the microprism, n ₁ and n ₂ respectively represent the refractive index of air and the refractive index of the array microprism material, and the angle b represents the angle between the light passing through the array microprism and the y axis, (a) Is a schematic diagram of the overall structure, (b) is a cross-sectional view of the whole, (c) is a schematic diagram of a microprism unit.

Detailed ways

The present invention will be further described below in conjunction with the drawings.

1 to 3, a movable anti-fatigue eyeglasses clip, comprising an anti-fatigue eyeglass lens body and a clamping buckle 1, the clamping buckle is fixed on the anti-fatigue eyeglass lens body, the anti-fatigue eyeglasses The lens body includes a light direction adjusting lens 5 for anti-fatigue function, a protective sheet 2 and a spacer ring 4, and the light direction adjusting lens 5 is used to deflect the incident light so that it enters the human eye as a parallel light; The light direction adjusting lens 5 is composed of array microprisms. In the array microprisms, each microprism unit constituting the array is the same; the spacer ring 4 is placed on the light direction adjusting lens 5 and the protective sheet Between 2.

Further, the structure of the microprism unit on the light direction adjusting lens 5 is represented by the length L of the bottom side and the angle a between the hypotenuse and the bottom side. The refractive index of the air and the refractive index of the array microprism material are respectively represented by n ₁ and n ₂ indicate that the light passing through the array microprism enters the human eye at an angle b, and the angle b refers to the angle between the light and the y axis;

Preferably, the angle a and the angle b satisfy formula (1):

The value range of the angle b is 0.1° to 6°;

The value of the base length L satisfies formula (2):

e ^-α·Ltan ^a ＞85% (2)

The formula (2) represents the absorption coefficient of the array microlens material.

The protective sheet is a hard optical plastic with high transmittance in the visible light band, and its function is to protect the array microprism structure on the optical direction adjustment lens.

Further, the light direction adjusting lens 5, the protection sheet 2, and the spacer ring 4 are provided with 4 pin holes symmetrically centered and spaced at 90 degrees. The light direction adjusting lens 5, the protection sheet 2, and the spacer ring 4 are provided with 4 pin holes. The pin holes are coaxial respectively; the fixing pin 3 is inserted into the pin holes on the light direction adjusting lens 5, the protective sheet 2, and the spacer ring 4 to fix the light direction adjusting lens 5, the protective sheet 2, and the spacer ring 4 Together, the anti-fatigue spectacle lens body is formed.

Further, the clamping buckle is fixed on the body of the anti-fatigue spectacle lens, and the fixing method includes but not limited to mechanical methods (such as screws and pins), chemical methods (such as bonding), and the like.

The movable anti-fatigue eyeglass clip proposed in this embodiment is based on a purely physical method and does not involve the ingestion of drugs. It is convenient to switch between wearing and taking off, and there is no need to stop work during use, that is, the eye can be completed while using the eye. Relaxation and exercise of the muscles and eyes to achieve the effect of anti-fatigue.

1 to 3, a method for manufacturing a movable anti-fatigue spectacle clip, the movable anti-fatigue spectacle clip includes an anti-fatigue spectacle lens body and a clamping buckle 1, the clamping buckle is fixed on the On the anti-fatigue eyeglass lens body, the anti-fatigue eyeglasses lens body includes a light direction adjusting lens 5, a protective sheet 2 and a spacer ring 4 for achieving an anti-fatigue function, and the light direction adjusting lens 5 is used to deflect incident light , So that it enters the human eye with approximately parallel light; the light direction adjusting lens 5 is composed of array microprisms, in the array microprisms, each microprism unit constituting the array is the same; the spacer ring 4 is placed Between the light direction adjusting lens 5 and the protective sheet 2; the manufacturing method includes the following steps:

1) Making the light direction adjusting lens 5, the light direction adjusting lens is composed of array microprisms, in the array microprisms, each microprism unit constituting the array is the same;

2) The spacer ring 4 is placed between the light direction adjusting lens and the protective sheet;

3) The light direction adjusting lens 5, the protective sheet 2, the spacer ring 4 are fixedly assembled to form the movable anti-fatigue eyeglass lens body;

4) Fix the clamping buckle 1 on the main body of the anti-fatigue eyeglasses to form the movable anti-fatigue eyeglass clip.

Further, the method further includes the following steps:

Further, in the step 1), the structure of the microprism unit on the light direction adjusting lens 5 is represented by the length L of the base and the angle a between the hypotenuse and the base, the refractive index of the air and the array microprism The refractive index of the material is represented by n ₁ and n ₂ respectively. The light passing through the array microprism enters the human eye at an angle b, and the angle b refers to the angle between the light and the y axis.

Preferably, the angle a and the angle b satisfy formula (1):

The value range of the angle b is 0.1° to 6°;

The value of the base length L satisfies formula (2):

e ^-α·L ^tan ^a ＞85% (2)

The material of the light direction adjusting lens 5 is an optical plastic with good optical performance in the visible light band, including but not limited to polymethyl methacrylate (PMMA) or polycarbonate (PC).

Furthermore, in the step 2), the side of the light direction adjusting lens on which the array microprism is made faces the protective sheet 2.

The protective sheet 2 is a hard optical plastic with high transmittance in the visible light band, and its function is to protect the array microprism structure on the optical direction adjustment lens; the thickness of the protective sheet is determined by the strength and The optical transmittance is determined, and the preferred thickness ranges from 0.2 mm to 2.5 mm; the material of the protective sheet includes but not limited to polymethyl methacrylate (PMMA) or polycarbonate (PC) or polypropylene (PP) or polyimide (PI) or polyvinyl chloride (PVC) or polyethylene terephthalate (PET).

Further, in the step 2), the spacer ring 4 is used to isolate the light direction adjusting lens and the protective sheet, and its function is to prevent the array microprism structure from contacting the protective sheet; the thickness of the spacer ring Determined by the distance between the array microprisms and the protective sheet, the distance between the array microprisms and the protective sheet is preferably in the range of 0.1 mm to 1 mm. The material of the spacer includes but is not limited to optical plastic, metal or alloy materials.

Furthermore, in the step 3), the light direction adjusting lens 5, the protective sheet 2, and the spacer ring 4 are provided with 4 pin holes symmetrically centered and 90 degrees apart, the light direction adjusting lens 5, the protective sheet 2. The four pin holes on the spacer ring 4 are coaxial respectively; the four pin holes on the lens 5, the protective sheet 2, and the spacer ring 4 are aligned with the light directions respectively, and then the fixing pins 3 are inserted for fixed assembly.

The method of using the movable anti-fatigue spectacle clip of this embodiment includes the following steps:

(1) Choose suitable anti-fatigue glasses according to the size of interpupillary distance;

(2) Use anti-fatigue glasses when the eyes are used for more than 60 minutes;

(3) Use anti-fatigue glasses no less than 2 times and no more than 10 times a day, and each use time is 10 minutes to 30 minutes.

Claims

A movable anti-fatigue spectacles clip, comprising an anti-fatigue spectacle lens body and a clamping buckle, the clamping buckle is fixed on the anti-fatigue spectacle lens main body, characterized in that the anti-fatigue spectacle lens body includes The anti-fatigue function of the light direction adjusting lens, the protective sheet and the spacer ring, the light direction adjusting lens is used to deflect the incident light so that it enters the human eye as a parallel light; the light direction adjusting lens is composed of an array It is composed of micro prisms, in the array micro prisms, each micro prism unit constituting the array is the same; the spacer ring is placed between the light direction adjusting lens and the protective sheet.
The movable anti-fatigue spectacle clip of claim 1, wherein the structure of the microprism unit on the light direction adjusting lens is represented by the length L of the base and the angle a between the hypotenuse and the base. The refractive index of the air and the refractive index of the array microprism material are represented by n 1 and n 2 respectively. The light passing through the array microprism enters the human eye at an angle b, and the angle b refers to the angle between the light and the y axis ；

The angle a and the angle b satisfy the formula (1):

The value range of the angle b is 0.1° to 6°;

The value of the base length L satisfies formula (2):

e -α·L tan a ＞85% (2)

In formula (2), α represents the absorption coefficient of the array microlens material.
The movable anti-fatigue eyeglass clip of claim 1 or 2, wherein the edge of the array microprism is perpendicular to the line connecting the left and right eye pupils; the material of the light direction adjusting lens is poly Methyl acrylate or polycarbonate.
A movable anti-fatigue eyeglass clip according to claim 1 or 2, wherein the side of the light direction adjusting lens with the array microprisms faces the protective sheet; the protective sheet is for visible light Rigid optical plastics with high waveband transmittance are used to protect the array microprism structure on the optical direction adjustment lens.
The movable anti-fatigue glasses clip according to claim 1 or 2, wherein the spacer ring is used to isolate the light direction adjusting lens and the protective sheet, and is used to prevent the array microprism structure from being The light direction adjustment lens, the protection sheet, and the spacer ring are arranged with 4 symmetrical center pin holes 90 degrees apart. The 4 pin holes on the light direction adjustment lens, the protection sheet and the spacer ring are respectively Coaxial; the fixing pin is inserted into the pin holes on the light direction adjusting lens, the protective sheet, and the spacer ring to fix the light direction adjusting lens, the protective sheet, and the spacer ring together to form the anti-fatigue eyeglass lens body .
The movable anti-fatigue spectacle clip according to claim 5, wherein the thickness of the protective sheet is determined by the strength and optical transmittance during fixing, and the thickness ranges from 0.2 mm to 2.5 mm; The sheet material is polymethyl methacrylate, polycarbonate, polypropylene, polyimide, polyvinyl chloride or polyethylene terephthalate;

The thickness of the spacer ring is determined by the distance between the array microprisms and the protective sheet. The distance between the array microprisms and the protective sheet ranges from 0.1 mm to 1 mm; the material of the spacer ring is optical plastic, Metal or alloy material.
A method for manufacturing a movable anti-fatigue spectacle clip according to claim 1, wherein the movable anti-fatigue spectacle clip comprises an anti-fatigue spectacle lens body and a clamping buckle, and the clamping buckle is fixed On the anti-fatigue spectacle lens body, the anti-fatigue spectacle lens body includes a light direction adjusting lens, a protective sheet, and a spacer ring that realize an anti-fatigue function, and the light direction adjusting lens is used to deflect incident light, and Make it enter the human eye with approximately parallel light; the light direction adjusting lens is composed of array microprisms, in the array microprisms, each microprism unit constituting the array is the same; the spacer ring is placed on the light Adjust the direction between the lens and the protective sheet; the manufacturing method includes the following steps:

1) Making a light direction adjusting lens, the light direction adjusting lens is composed of an array microprism, in the array microprism, each microprism unit constituting the array is the same;

2) The spacer ring is placed between the light direction adjusting lens and the protective sheet;

3) The light direction adjusting lens, the protective sheet, and the spacer ring are fixedly assembled to form the movable anti-fatigue eyeglass lens body;

4) Fixing the clamping buckle on the main body of the anti-fatigue glasses to form the movable anti-fatigue glasses clip.
The manufacturing method of a movable anti-fatigue eyeglass clip according to claim 7, wherein the method further comprises the following steps:

5) According to the pupil distance of the user, corresponding to the pupil position of the left and right eyes of the user, make invisible marks on the surface of the fixed and assembled movable anti-fatigue glasses clip; correspondingly, in the nearsightedness or hyperopia glasses that the user is wearing Make invisible marks on the pupil positions of the left and right eyes;

6) Clamp the movable anti-fatigue glasses clip on the myopia or hyperopia glasses that the user is wearing for the left and right eyes, use but not limited to highlight the invisible mark, and align the left and right eye movable anti-fatigue glasses clip respectively The invisible mark on the lens of the glasses that the user is wearing;

7) Fine-tune the clamping position until the object is clear and without ghosting near the photopic distance.
The manufacturing method of a movable anti-fatigue eyeglass clip according to claim 7 or 8, characterized in that, in the step 3), the light direction adjusting lens, the protective sheet, and the spacer ring are arranged with four The four pin holes on the symmetrical center and 90 degrees apart, the four pin holes on the light direction adjustment lens, the protective sheet, and the spacer ring are coaxial; respectively, the 4 pin holes on the lens, the protective sheet, and the spacer ring are aligned with the light direction adjustment Pin holes, and then insert the fixing pin for fixing assembly.
The manufacturing method of a movable anti-fatigue eyeglass clip according to claim 7 or 8, wherein in the step 4), the clamping buckle is fixed on the anti-fatigue eyeglass lens body, The fixing method is a mechanical method or a chemical method;

In the step 5), the invisible label is a fluorescent invisible label.