Progressive multi-focus measuring tool

Abstract

The invention provides a progressive multi-focus measuring tool which comprises a measuring tool main frame body, a middle beam fixing position is arranged in the middle of the measuring tool main frame body, a middle beam fixing position adjusting mechanism is arranged on the middle beam fixing position, and pupil height measuring up-and-down movement adjusting mechanisms are arranged on the two sides of the measuring tool main frame body. The pupil height measurement up-and-down movement adjusting mechanism is connected with the visor mounting ring, the visor mounting ring is provided with a front visor and a rear visor, the front visor and the rear visor are provided with horn mouths, and the front visor and the rear visor are both provided with visor rotation adjusting mechanisms. The pupil distance and the pupil height are measured in a two-piece superposition mode, pupil distance and pupil height data are obtained by rotating the front and rear shading plates, and meanwhile data of a center point are obtained; the middle beam can be adjusted, the width of the rotary knob at the center point of the measuring tool is adjusted according to the sizes of the middle beams of different glasses frames, and finally the middle beam fixing position is fixed to fix the glasses frame worn by a consumer.

Description

Technical Field

[0001] The present invention relates to the technical field of glasses, in particular to a progressive multifocal measurement tool. Background Art

[0002] In traditional eyewear parameter measurement, optometrists usually use measurement tools and their own experience to use observation methods to measure consumer data. This method has many shortcomings: it relies on the experience of optometrists for observation and judgment, and is easily affected by subjective factors, resulting in insufficient accuracy of the measurement results, especially in the measurement of pupil distance, pupil height and center point data, which may have large errors.

[0003] Existing measurement tools are not adaptable enough to the different sizes of the middle beam of the frame, and it is difficult to firmly fix the frames of various specifications, which may affect the stability and accuracy of the measurement. Traditional measurement methods are relatively simple and lack innovation, and cannot meet consumers' demand for accurate measurement. In the measurement of pupil distance and pupil height, the existing methods may not be accurate enough and it is difficult to obtain accurate values.

[0004] The operation process of traditional measurement tools is relatively cumbersome, requiring optometrists to have high skills and experience, which not only increases the difficulty of the operator's work, but also easily leads to longer measurement time and affects work efficiency. Consumers are often in a passive state of acceptance during the traditional measurement process and cannot actively participate in the measurement, which may reduce consumers' trust and satisfaction with the measurement results. Therefore, we have made improvements to this and proposed a progressive multifocal measurement tool. Summary of the invention

[0005] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above invention purpose, the present invention provides the following technical solutions: a progressive multifocal measurement tool, including a measurement tool main frame, a middle beam fixing position is arranged in the middle of the measurement tool main frame, a middle beam fixing position adjustment mechanism is arranged on the middle beam fixing position, pupil height measurement up and down movement adjustment mechanisms are arranged on both sides of the measurement tool main frame, the pupil height measurement up and down movement adjustment mechanism is connected to the visor mounting ring, the visor mounting ring is provided with a front visor and a rear visor, the front visor and the rear visor are provided with a horn mouth, the front visor and the rear visor are both provided with a visor rotation adjustment mechanism, and a glasses clamping mechanism is arranged on the middle rear side of the measurement tool main frame.

[0006] As a preferred technical solution of the present invention, the center beam fixed position adjustment mechanism is provided with a center beam fixed position adjustment knob, and a center beam adjustment circular gear is provided at the end of the center beam fixed position adjustment knob, and the center beam adjustment circular gear is meshed with the center beam adjustment horizontal spur rack.

[0007] As a preferred technical solution of the present invention, the pupil height measurement up and down movement adjustment mechanism is provided with a pupil height measurement adjustment rotating knob, the pupil height measurement adjustment rotating knob is connected to the pupil height measurement rotating circular gear, and the pupil height measurement rotating circular gear is meshed with the pupil height measurement vertical spur rack.

[0008] As a preferred technical solution of the present invention, the pupil height measurement vertical spur rack is inserted into a fixed sleeve, the fixed sleeve is provided with a triangular hole, and a pupil height measurement scale is arranged on the pupil height measurement vertical spur rack.

[0009] As a preferred technical solution of the present invention, the pupil height measurement vertical spur rack is connected to the sunshade mounting ring.

[0010] As a preferred technical solution of the present invention, the shading plate rotation adjustment mechanism is provided with a front shading plate rotation piece and a rear shading plate rotation piece, the front shading plate rotation piece is arranged on the front side of the front shading plate, and the rear shading plate rotation piece is arranged on the rear side of the rear shading plate.

[0011] As a preferred technical solution of the present invention, the front shading plate rotating piece cooperates with the front rotating piece limiting groove, the rear shading plate rotating piece cooperates with the rear rotating piece limiting groove, and the movable angle of the front shading plate rotating piece and the rear shading plate rotating piece is 180°.

[0012] As a preferred technical solution of the present invention, an adjustment scale is provided on the upper part of the main frame of the measuring tool, and silicone is provided on both sides of the fixing position of the middle beam.

[0013] As a preferred technical solution of the present invention, a glasses clip is arranged on the rear side of the glasses clamping mechanism, and a clip spring is arranged on the glasses clip.

[0014] As a preferred technical solution of the present invention, the pupil distance measurement left and right movement adjustment mechanism is provided with a pupil distance measurement left and right adjustment rotating knob, the pupil distance measurement left and right adjustment rotating knob is connected to the pupil distance measurement left and right adjustment rotating circular gear, and the pupil distance measurement left and right adjustment rotating circular gear is meshed with the pupil distance measurement left and right adjustment spur rack gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of the present invention: 1. Improving measurement accuracy: Using the consumer's subjective vision to perform measurements can more directly reflect the consumer's actual visual experience compared to the traditional optometrist's observation method based on experience, thereby improving the measurement accuracy of pupil distance, pupil height and center point data.

[0016] 2. Adapt to a variety of frames: The center beam fixing position adjustment mechanism can be adjusted in width and length according to the size of the center beam of different frames. It can fix various specifications of glasses frames, increasing the versatility of the measuring tool.

[0017] 3. Innovative measurement method: The method of measuring pupil distance and pupil height uses two superimposed shading plates, and obtains data by rotating the front and rear shading plates. This innovative measurement method can obtain pupil distance and pupil height information more accurately, and obtain the data of the center point at the same time.

[0018] 4. Easy to operate: The structure design of the measuring tool is reasonable and the operation process is relatively simple. By rotating the adjustment knob and turning the light shield, various measurement parameters can be obtained, which reduces the operator's work difficulty and operation complexity.

[0019] 5. Improve work efficiency: Accurate measurement results and simple operation procedures help improve the work efficiency of optometrists, reduce measurement time, and provide services to more consumers.

[0020] 6. Improve consumer experience: Consumers participate in the measurement process and assist in the measurement through subjective visual perception. This approach can enhance consumers’ trust in the measurement results and improve their experience.

[0021] 7. Patented technology advantages: This measuring tool has invention patents and unique competitive advantages in the market, which helps to enhance the added value and market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure provided by the present invention; Figure 2 A schematic diagram of the structure of the center beam fixing position adjustment mechanism provided by the present invention; Figure 3 A schematic diagram of the structure of the up-and-down adjustment mechanism for pupil height measurement provided by the present invention; Figure 4 A schematic diagram of the rear structure provided by the present invention; Figure 5 A schematic diagram of the main structure provided by the present invention; Figure 6 A schematic diagram of the structure of the left-right movement adjustment mechanism for pupil distance measurement provided by the present invention; Figure 7 This is a schematic diagram of the limiting groove structure provided by the present invention.

[0023] Indicated in the figure: 1. Main frame of measuring tool; 2. Middle beam fixing position; 3. Middle beam fixed position adjustment mechanism; 301. Middle beam fixed position adjustment knob; 302. Middle beam adjustment circular gear; 303. Middle beam adjustment horizontal straight rack; 4. Pupil height measurement up and down adjustment mechanism; 401. Pupil height measurement adjustment rotating knob; 402. Pupil height measurement rotating circular gear; 403. Pupil height measurement vertical spur rack; 404. Fixed sleeve; 405. Triangular hole; 406. Pupil height measurement scale; 5. Sunshade mounting ring; 6. Front sunshade; 7. Rear sunshade; 8. Trumpet; 9. Shading plate rotation adjustment mechanism; 901. Front shading plate rotation piece; 902. Rear shading plate rotation piece; 903, front rotating piece limiting groove; 904, rear rotating piece limiting groove; 10. Adjust the scale; 11. glasses clamping mechanism; 1101. glasses clamp; 1102. clamp spring; 12. silica gel; 13. Left-right movable adjustment mechanism for pupil distance measurement; 1301. Left-right adjustment rotating knob for pupil distance measurement; 1302. Left-right adjustment rotating circular gear for pupil distance measurement; 1303. Left-right adjustment spur rack for pupil distance measurement. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0025] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] Example 1: Please refer to Figure 1-Figure 7A progressive multifocal measuring tool comprises a measuring tool main frame 1, a middle beam fixing position 2 is arranged in the middle of the measuring tool main frame 1, a middle beam fixing position adjustment mechanism 3 is arranged on the middle beam fixing position 2, pupil height measurement up and down movement adjustment mechanisms 4 are arranged on both sides of the measuring tool main frame 1, the pupil height measurement up and down movement adjustment mechanism 4 is connected to a visor mounting ring 5, a front visor 6 and a rear visor 7 are arranged on the visor mounting ring 5, the front visor 6 and the rear visor 7 are provided with a horn mouth 8, the front visor 6 and the rear visor 7 are both provided with a visor rotation adjustment mechanism 9, and a glasses clamping mechanism 11 is arranged on the middle rear side of the measuring tool main frame 1.

[0027] The center beam fixed position adjustment mechanism 3 is provided with a center beam fixed position adjustment knob 301 , and a center beam adjustment circular gear 302 is provided at the end of the center beam fixed position adjustment knob 301 . The center beam adjustment circular gear 302 is meshed with a center beam adjustment horizontal spur rack 303 .

[0028] The pupil height measurement up and down movement adjustment mechanism 4 is provided with a pupil height measurement adjustment rotating knob 401, which is connected to a pupil height measurement rotating circular gear 402, and the pupil height measurement rotating circular gear 402 is meshed with a pupil height measurement vertical spur rack 403.

[0029] The vertical spur rack 403 for pupil height measurement is inserted into a fixing sleeve 404 , and a triangular hole 405 is provided in the fixing sleeve 404 . A pupil height measurement scale 406 is provided on the vertical spur rack 403 for pupil height measurement.

[0030] The pupil height measurement vertical spur rack 403 is connected to the visor mounting ring 5 .

[0031] The shading plate rotation adjustment mechanism 9 is provided with a front shading plate rotation piece 901 and a rear shading plate rotation piece 902 . The front shading plate rotation piece 901 is arranged on the front side of the front shading plate 6 , and the rear shading plate rotation piece 902 is arranged on the rear side of the rear shading plate 7 .

[0032] The front shading plate rotating piece 901 cooperates with the front rotating piece limiting groove 903, and the rear shading plate rotating piece 902 cooperates with the rear rotating piece limiting groove 904. The movable angle of the front shading plate rotating piece 901 and the rear shading plate rotating piece 902 is 180°.

[0033] The upper part of the measuring tool main frame 1 is provided with an adjustment scale 10. The rear side of the glasses clamping mechanism 11 is provided with a glasses clip 1101, and the glasses clip 1101 is provided with a clip spring 1102. Silica gel 12 is provided on both sides of the middle beam fixing position 2.

[0034] The pupil distance measurement left and right movement adjustment mechanism 13 is provided with a pupil distance measurement left and right adjustment rotating knob 1301, which is connected to the pupil distance measurement left and right adjustment rotating circular gear 1302, and the pupil distance measurement left and right adjustment rotating circular gear 1302 is gear-meshed with the pupil distance measurement left and right adjustment spur rack 1303.

[0035] The working principle of the progressive multifocal measurement tool is as follows: the glasses that the consumer needs to measure are placed on the main frame 1 of the measurement tool, and the glasses are fixed by the glasses clip 1101 and the clip spring 1102 on the glasses clamping mechanism 11. The middle beam fixed position adjustment mechanism 3 is used to adjust according to the size of the middle beam of different frames. The middle beam fixed position adjustment knob 301 is rotated to drive the middle beam adjustment circular gear 302 at the end to rotate, and the middle beam adjustment circular gear 302 is meshed with the middle beam adjustment horizontal spur rack 303, so as to realize the width and narrowness of the middle beam fixed position 2, and finally fix the middle beam of the glasses.

[0036] When measuring pupil height, the pupil height measurement adjustment rotating knob 401 of the pupil height measurement up and down adjustment mechanism 4 is rotated, and the pupil height measurement adjustment rotating knob 401 drives the pupil height measurement rotating circular gear 402 to rotate, and the pupil height measurement rotating circular gear 402 is meshed with the pupil height measurement vertical spur rack 403, so that the pupil height measurement vertical spur rack 403 moves up and down in the fixed sleeve 404. A triangular hole 405 is provided on the fixed sleeve 404, and a pupil height measurement scale 406 is provided on the pupil height measurement vertical spur rack 403, and the pupil height is determined by reading the data on the scale. The pupil height measurement vertical spur rack 403 is connected to the shading plate mounting ring 5, thereby driving the shading plate mounting ring 5 to move up and down.

[0037] The shading plate mounting ring 5 is provided with a front shading plate 6 and a rear shading plate 7, and the angle of the shading plate is adjusted by the shading plate rotation adjustment mechanism 9. The front shading plate rotating piece 901 is provided at the front side of the front shading plate 6, and the rear shading plate rotating piece 902 is provided at the rear side of the rear shading plate 7. The front shading plate rotating piece 901 cooperates with the front rotating piece limiting groove 903, and the rear shading plate rotating piece 902 cooperates with the rear rotating piece limiting groove 904, so that the movable angle of the front shading plate 6 and the rear shading plate 7 is 180°. By rotating the front and rear shading plates 7, the two shading plates are superimposed, and the optometrist can obtain the pupil distance and pupil height data based on the subjective visual experience of the consumer, and obtain the data of the center point at the same time.

[0038] The rotation of the pupil distance measurement left and right adjustment rotating knob 1301 can drive the pupil distance measurement left and right adjustment rotating circular gear 1302 to rotate, and the pupil distance measurement left and right adjustment rotating circular gear 1302 is engaged with the pupil distance measurement left and right adjustment spur rack 1303. The rotation of the pupil distance measurement left and right adjustment rotating circular gear 1302 drives the pupil distance measurement left and right adjustment spur rack 1303 to move left and right, thereby adjusting the pupil distance.

[0039] The upper part of the measuring tool main frame 1 is provided with an adjustment scale 10, which can be used to assist in measurement and adjustment. Silicone gel 12 is provided on both sides of the middle beam fixing position 2 to protect and increase friction, so that the glasses are more firmly fixed on the measuring tool.

[0040] The measuring tool uses the subjective vision of consumers to measure, which is different from the traditional measurement method of optometrists using observation based on experience. Through the adjustable center beam fixing position 2, the pupil height measurement up and down adjustment mechanism 4 and the visor rotation adjustment mechanism 9, accurate measurement of the pupil distance, pupil height and center point data of the glasses can be achieved.

[0041] Embodiment 2: A progressive multifocal measurement tool. First, the optometrist opens the glasses clip 1101 of the glasses clamping mechanism 11, puts the patient's glasses in and fixes them with the clip spring 1102. Then, the middle beam fixing position adjustment knob 301 is rotated to adjust the width of the middle beam fixing position 2 according to the size of the middle beam of the glasses frame, so that the middle beam is firmly fixed. Next, the optometrist rotates the pupil height measurement adjustment rotating knob 401 of the pupil height measurement up and down adjustment mechanism 4 to drive the pupil height measurement rotating circular gear 402 to rotate, thereby causing the pupil height measurement vertical spur rack 403 to move up and down in the fixed sleeve 404. The patient's pupil height value is determined by observing the relative position of the triangular hole 405 on the fixed sleeve 404 and the pupil height measurement scale 406 on the pupil height measurement vertical spur rack 403. Finally, the optometrist adjusts the angles of the front shading plate 6 and the rear shading plate 7 through the shading plate rotation adjustment mechanism 9 to overlap the two shading plates. Based on the patient's subjective visual experience, the optometrist successfully obtained the pupil distance and pupil height data, as well as the center point data. The entire measurement process was accurate and fast, and the patient was satisfied with the measurement results.

[0042] Embodiment 3: A progressive multifocal measurement tool is provided for a patient with presbyopia who comes to get glasses. The staff uses the progressive multifocal measurement tool to measure the patient. The staff places the patient's glasses on the main frame 1 of the measuring tool and fixes the glasses with the glasses clamping mechanism 11. The center beam fixing position adjustment knob 301 is rotated to adapt to the size of the center beam of the patient's glasses. When measuring the pupil height, the staff carefully rotates the pupil height measurement adjustment knob 401, accurately reads the data on the pupil height measurement scale 406, and determines the pupil height. Subsequently, the staff operates the visor rotation adjustment mechanism 9 to rotate the front visor 6 and the rear visor 7 to the appropriate angle, and the two visors are superimposed. Through the patient's subjective visual feedback, the staff successfully obtains the data of the pupil distance and the center point. With this measuring tool, the staff provides the patient with accurate glasses parameters, which provides a strong basis for the preparation of suitable reading glasses.

[0043] Embodiment 4: A progressive multifocal measurement tool, this embodiment is for a child patient to perform a vision test and glasses parameter measurement. The doctor places the child patient's glasses securely on the main frame of the progressive multifocal measurement tool and fixes them with the glasses clamping mechanism 11. Considering that the center beam size of children's glasses is small, the doctor carefully rotates the center beam fixing position adjustment knob 301 to ensure that the center beam fixing position 2 can fit the center beam of the glasses tightly. When measuring the pupil height, the doctor slowly rotates the pupil height measurement adjustment knob 401, pays close attention to the changes in the pupil height measurement scale 406, and accurately records the pupil height data. Afterwards, the doctor skillfully operates the visor rotation adjustment mechanism 9 to adjust the front visor 6 and the rear visor 7 to the optimal position so that the two visors are perfectly superimposed. Under the guidance of the doctor, the child patient provides feedback based on his or her subjective visual experience, and the doctor successfully obtains accurate pupil distance and center point data. The simple operation and precise measurement of the progressive multifocal measurement tool provide reliable support for the vision correction of children patients.

[0044] Specific workflow of the progressive multifocal measurement tool: Preparation: Make sure that the measuring tool main frame 1 is placed on a stable workbench.

[0045] Fixing the glasses: Open the glasses clip 1101 on the rear side of the glasses clamping mechanism 11, put the glasses that the consumer needs to measure into the clip, and use the elastic force of the clip spring 1102 to fix the glasses.

[0046] Adjust the center beam fixed position 2: Rotate the center beam fixed position adjustment knob 301, and the center beam adjustment circular gear 302 at the end of the center beam fixed position adjustment knob 301 rotates accordingly.

[0047] The center beam adjustment circular gear 302 is meshed with the center beam adjustment horizontal spur rack 303, driving the center beam adjustment horizontal spur rack 303 to move, thereby realizing the width expansion and contraction of the center beam fixing position 2. According to the size of the center beam of the eyeglass frame, the center beam fixing position 2 is adjusted to a suitable width to ensure that the center beam of the eyeglasses can be firmly fixed. The silica gel 12 on both sides of the center beam fixing position 2 can increase the friction force and make the fixation more firm.

[0048] Measuring pupil height: Rotate the pupil height measurement adjustment knob 401 of the pupil height measurement up and down adjustment mechanism 4. The pupil height measurement adjustment knob 401 drives the pupil height measurement rotating circular gear 402 to rotate. The pupil height measurement rotating circular gear 402 is meshed with the pupil height measurement vertical spur rack 403, so that the pupil height measurement vertical spur rack 403 moves up and down in the fixed sleeve 404, thereby adjusting the distance of the pupil height.

[0049] Measuring pupil distance: The pupil distance measurement left and right adjustment rotating knob 1301 can be rotated to drive the pupil distance measurement left and right adjustment rotating circular gear 1302 to rotate, and the pupil distance measurement left and right adjustment rotating circular gear 1302 is meshed with the pupil distance measurement left and right adjustment spur rack 1303. The pupil distance measurement left and right adjustment rotating circular gear 1302 is rotated to drive the pupil distance measurement left and right adjustment spur rack 1303 to move left and right, thereby adjusting the pupil distance.

[0050] The pupil height measurement scale 406 on the vertical spur rack 403 will move up and down accordingly. The measured value of the pupil height can be determined by observing the relative position of the scale and the triangular hole 405 on the fixing sleeve 404.

[0051] The movement of the vertical spur rack 403 for pupil height measurement will drive the shading plate mounting ring 5 to move up and down, thereby adjusting the heights of the front shading plate 6 and the rear shading plate 7.

[0052] Measuring pupil distance and obtaining center point data: The angles of the front shading plate 6 and the rear shading plate 7 are adjusted by the shading plate rotation adjustment mechanism 9. The front shading plate rotating piece 901 is on the front side of the front shading plate 6, and the rear shading plate rotating piece 902 is on the rear side of the rear shading plate 7. The front shading plate rotating piece 901 and the rear shading plate rotating piece 902 are rotated respectively. Since the front shading plate rotating piece 901 cooperates with the front rotating piece limiting groove 903, and the rear shading plate rotating piece 902 cooperates with the rear rotating piece limiting groove 904, and the movable angle is 180°, the front shading plate 6 and the rear shading plate 7 can be rotated to a suitable position.

[0053] The front shading plate 6 and the rear shading plate 7 are formed into two overlapping states, and consumers can obtain the pupil distance and pupil height data based on the subjective visual experience, and the optometrist can obtain the data of the center point according to the position of the shading plates.

[0054] Reading measurement data: During the measurement process, auxiliary measurement and adjustment can be performed through the adjustment scale 10 on the upper part of the measuring tool main frame 1. After the measurement is completed, the pupil height value on the pupil height measurement scale 406, as well as the pupil distance and center point data determined by the position of the shading plate are read.

[0055] End of measurement: After the measurement is completed, the glasses are taken out from the glasses clamping mechanism 11. The measuring tool is closed, and the measuring tool main frame 1 and various components are arranged for next use.

[0056] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A progressive multi-focal measurement tool, comprising a measurement tool main frame (1), characterized in that: A middle beam fixing position (2) is arranged in the middle of the measuring tool main frame (1), and a middle beam fixing position adjustment mechanism (3) is arranged on the middle beam fixing position (2). A pupil height measurement up and down movement adjustment mechanism (4) and a pupil distance measurement left and right movement adjustment mechanism (13) are arranged on both sides of the measuring tool main frame (1). The pupil height measurement up and down movement adjustment mechanism (4) is connected to a visor mounting ring (5). A front visor (6) and a rear visor (7) are arranged on the visor mounting ring (5). The front visor (6) and the rear visor (7) are provided with a horn mouth (8). The front visor (6) and the rear visor (7) are both provided with a visor rotation adjustment mechanism (9). A glasses clamping mechanism (11) is arranged on the middle rear side of the measuring tool main frame (1).

2. A progressive multi-focal measurement tool according to claim 1, characterized in that: The center beam fixed position adjustment mechanism (3) is provided with a center beam fixed position adjustment knob (301), a center beam adjustment circular gear (302) is provided at the end of the center beam fixed position adjustment knob (301), and the center beam adjustment circular gear (302) is meshed with a center beam adjustment horizontal spur rack (303).

3. A progressive multi-focal measurement tool according to claim 2, characterized in that: The pupil height measurement up and down movement adjustment mechanism (4) is provided with a pupil height measurement adjustment rotating knob (401), the pupil height measurement adjustment rotating knob (401) is connected to the pupil height measurement rotating circular gear (402), and the pupil height measurement rotating circular gear (402) is meshed with the pupil height measurement vertical spur rack (403).

4. A progressive multi-focal measurement tool according to claim 3, characterized in that: The pupil height measurement vertical spur rack (403) is inserted into a fixed sleeve (404), the fixed sleeve (404) is provided with a triangular hole (405), and a pupil height measurement scale (406) is provided on the pupil height measurement vertical spur rack (403).

5. A progressive multi-focal measurement tool according to claim 4, characterized in that: The pupil height measurement vertical spur rack (403) is connected to the visor mounting ring (5).

6. A progressive multi-focal measurement tool according to claim 5, characterized in that: The shading plate rotation adjustment mechanism (9) is provided with a front shading plate rotation piece (901) and a rear shading plate rotation piece (902); the front shading plate rotation piece (901) is arranged on the front side of the front shading plate (6), and the rear shading plate rotation piece (902) is arranged on the rear side of the rear shading plate (7).

7. A progressive multi-focal measurement tool according to claim 6, characterized in that: The front light shielding plate rotating piece (901) cooperates with the front rotating piece limiting groove (903), and the rear light shielding plate rotating piece (902) cooperates with the rear rotating piece limiting groove (904). The movable angle of the front light shielding plate rotating piece (901) and the rear light shielding plate rotating piece (902) is 180°.

8. A progressive multi-focal measurement tool according to claim 7, characterized in that: An adjustment scale (10) is provided on the upper part of the measuring tool main frame (1), and silica gel (12) is provided on both sides of the middle beam fixing position (2).

9. A progressive multi-focal measurement tool according to claim 8, characterized in that: A glasses clip (1101) is provided on the rear side of the glasses clamping mechanism (11), and a clip spring (1102) is provided on the glasses clip (1101).

10. A progressive multi-focal measurement tool according to claim 9, characterized in that: The pupil distance measurement left-right movement adjustment mechanism (13) is provided with a pupil distance measurement left-right adjustment rotating knob (1301), the pupil distance measurement left-right adjustment rotating knob (1301) is connected to a pupil distance measurement left-right adjustment rotating circular gear (1302), and the pupil distance measurement left-right adjustment rotating circular gear (1302) is meshed with a pupil distance measurement left-right adjustment spur rack (1303).

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