Pupil distance measuring device

Abstract

The utility model discloses a pupil distance measuring device, which belongs to the field of medical instruments and comprises a supporting main body formed by integrally connecting a base plate and a measuring plate, the base plate is arranged in front of the measuring plate, and a measuring ruler switching mechanism used for replacing measuring rulers with different sizes is arranged in a movable groove. And the shape of the movable groove in the measuring plate is circular. By arranging the measuring plate and the measuring ruler switching mechanism, the eyes of a measured person directly look at the measuring ruler main body in the movable groove, the camera in the measuring ruler main body shoots the amplification or contraction action of the through hole of the measured person, and the soft light group is prevented from directly irradiating the eyes of the measured person due to the fact that the illumination direction faces the measuring ruler main body, so that the measurement accuracy is improved. A base plate is further added, so that the base plate and the movable groove are arranged on the same horizontal plane to keep the sight of the measured person horizontal, and the accuracy of measuring the interpupillary distance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a pupil distance measuring device. Background Art

[0002] Pupil changes are an important indicator for observing changes in a patient's condition and an important part of disease observation. Currently, medical staff judge pupil distance by direct visual inspection or by measuring it with a ruler.

[0003] However, the disadvantages of the above methods are that the former has no reference object, and each medical staff member monitors the pupil at will, resulting in large errors. The latter is inconvenient to measure due to the small pupil value, which can easily affect the accuracy of the reading.

[0004] The existing patent (publication number: CN218832738U) discloses a pupil distance measuring device, including a supporting body, a folding lighting mechanism rotatably connected to the top of the supporting body, a connecting mechanism arranged below the supporting body and rotatably connected to the supporting body, a first measuring ruler detachably connected to one side of the connecting mechanism at one end, and a second measuring ruler detachably connected to the other end of the first measuring ruler. The rear end surface of the supporting body is provided with a storage groove for storing the removed first measuring ruler and the second measuring ruler. The second measuring ruler and the second measuring ruler are distributed with a plurality of measuring circular holes with different apertures. The accurate and standard measuring circular holes of the application are used for reference measurement, which has less measurement error than the visual measurement method. The circular measuring circular hole has the same shape as the pupil, and the measurement comparison is simpler and faster, thereby helping to improve the accuracy of the measurement.

[0005] In view of the above problems, existing patents have provided solutions. However, when measuring the pupil distance, the line of sight of the pupil needs to be aligned with the measuring ruler. Failure to align the lines of sight will lead to large errors in the measurement results. Although the above patents provide two measuring rulers, the multiple measuring holes on the measuring rulers will make it impossible to align with the eyes of the person being measured, resulting in large measurement errors. Summary of the invention

[0006] The utility model aims to provide a pupil distance measuring device, which can solve the problem that a plurality of measuring circular holes on a medical tool measuring ruler cannot be aligned with the eyes of a person being measured, resulting in a large measurement error.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pupil distance measuring device, comprising a supporting body formed by an integral connection of a pad and a measuring plate, with the pad in front and the measuring plate in the back, a movable groove is provided inside the measuring plate, a measuring ruler switching mechanism for replacing measuring rulers of different sizes is provided inside the movable groove, and the movable groove is circular in shape inside the measuring plate, a placement groove for matching a person's chin is provided on the pad, and the inner wall of the placement groove and the pad are both structures of rubber-bonded sponge.

[0008] Preferably, the measuring ruler switching mechanism includes a shaft rod rotatably mounted on the inner wall of the movable groove, four groups of adjustment plates are equidistantly arranged on the outer surface of the shaft rod, a measuring ruler body is movably arranged on the adjustment plate, the adjustment plate is used to adjust the distance between the measuring ruler bodies in the same group, a camera is arranged on the measuring ruler body, a soft light ring for increasing the brightness is fixedly installed on the edge of the measuring ruler body, and one end of the shaft rod away from the adjustment plate passes through the measuring plate and is fixedly connected to the first hand wheel.

[0009] Preferably, an adjustment slot is provided inside the adjustment plate, and two sets of gears and gear rows meshing therewith are arranged inside the adjustment slot, and the two sets of gears are also meshed with each other, and a limit shaft is fixedly installed at the center of each set of gears, a pointer is fixedly installed on the outer surface of one of the limit shafts, and the gear row passes through the adjustment slot and is fixedly connected to the measuring ruler body.

[0010] Preferably, four groups of card slots are equidistantly arranged on the back side of the measuring plate, each group of card slots is engaged with a card block, and each group of the card blocks is fixedly connected to the first hand wheel via a spring.

[0011] Preferably, the movable groove is provided on the front side of the measuring plate and can be used in conjunction with any set of measuring ruler bodies, and the movable groove and the placement groove are located in the same horizontal plane and are used in conjunction with each other.

[0012] Preferably, the sizes of the four groups of measuring ruler bodies gradually decrease in clockwise order, the inner diameter of the inner wall of the soft light ring gradually increases from outside to inside and is bucket-shaped, and the inner wall of the soft light ring is provided with an eye-protecting soft light group.

[0013] Preferably, the movable groove is an annular through hole located on the back of the measuring plate, the two groups of limiting shafts are of different lengths, the longer limiting shaft is the second hand wheel, and the second hand wheel can make a circular motion in the annular through hole.

[0014] Preferably, a scale for use with a pointer is provided on the back of the adjustment plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The present application sets a measuring plate and a measuring ruler switching mechanism, and the measured person looks directly at the measuring ruler body in the movable slot, and the camera in the measuring ruler body captures the movement of the measured person's through hole enlarging or contracting. At the same time, the soft light group is illuminated in the direction of the measuring ruler body, avoiding direct illumination of the measured person's eyes, and will not interfere with the measured person's line of sight, so as to complete the measurement of the pupil distance. A pad is further added, so that the pad and the movable slot are arranged on the same horizontal plane to keep the measured person's line of sight level, thereby improving the accuracy of measuring the pupil distance.

[0017] 2. The present application sets an adjustment plate and a limit axis to control the two measuring ruler bodies in the same group to move closer or farther away according to the distance between each person's eyes, thereby adjusting the movement of the two measuring ruler bodies in the same group according to the distance between the user's eyes, thereby further improving the accuracy of measuring the pupil distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a view of the measurement switching mechanism of the utility model;

[0021] Figure 3 This is a combined view of the measuring ruler body, camera and soft light ring of the utility model;

[0022] Figure 4 This is a working view of the internal mechanism of the adjustment plate of the utility model;

[0023] Figure 5 It is a rear view of the utility model.

[0024] Description of reference numerals:

[0025] 1. Support body; 2. Pad; 3. Measuring plate; 4. Movable slot; 5. Measuring ruler switching mechanism; 6. Card slot; 7. Card block; 51. Shaft; 52. Adjustment plate; 53. Measuring ruler body; 54. Camera; 55. Soft light ring; 56. First hand wheel; 521. Adjustment slot; 522. Gear; 523. Gear row; 524. Limit shaft; 525. Pointer. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 5 , the utility model provides a technical solution:

[0028] A pupil distance measuring device comprises a supporting body 1 which is formed by integrally connecting a pad 2 and a measuring plate 3, wherein the pad 2 is in front and the measuring plate 3 is in the back, a movable groove 4 is provided inside the measuring plate 3, a measuring ruler switching mechanism 5 for replacing measuring rulers of different sizes is provided inside the movable groove 4, and the movable groove 4 is circular in shape inside the measuring plate 3, a placement groove for matching a person's chin is provided on the pad 2, and the inner wall of the placement groove and the pad 2 are both structures of rubber-bonded sponge.

[0029] The measuring ruler switching mechanism 5 includes a shaft rod 51 rotatably mounted on the inner wall of the movable groove 4, and four groups of adjustment plates 52 are equidistantly arranged on the outer surface of the shaft rod 51. A measuring ruler body 53 is movably arranged on the adjustment plate 52. The adjustment plate 52 is used to adjust the distance between the measuring ruler bodies 53 in the same group. A camera 54 is arranged on the measuring ruler body 53. A soft light ring 55 for increasing the brightness is fixedly installed on the edge of the measuring ruler body 53. One end of the shaft rod 51 away from the adjustment plate 52 passes through the measuring plate 3 and is fixedly connected to a first hand wheel 56.

[0030] The movable groove 4 is a groove formed on the front surface of the measuring plate 3 and can be used in conjunction with any set of measuring ruler bodies 53 , and the movable groove 4 and the placement groove are located at the same horizontal plane and are used in conjunction with each other.

[0031] The sizes of the four sets of measuring ruler bodies 53 gradually decrease in clockwise order, the inner diameter of the inner wall of the soft light ring 55 gradually increases from the outside to the inside and is bucket-shaped, and the inner wall of the soft light ring 55 is provided with a soft light group for eye protection.

[0032] The movable groove 4 is located on the back of the measuring plate 3 and is an annular through hole. The two sets of limiting shafts 524 are of different lengths. The longer limiting shaft 524 is the second hand wheel, and the second hand wheel can make a circular motion in the annular through hole.

[0033] By adopting the above technical solution, when measuring pupil distance, the person being measured first places his chin on the placement groove on the pad 2 (if the person being measured feels that the height is too high at this time, he can press his chin down to deform the sponge part on the surface of the placement groove, thereby adjusting the sight height and keeping the sight of the measuring ruler body 53 directly), and looks directly at the measuring ruler body 53 in the movable groove 4. Since the soft light group is illuminating in the direction of the measuring ruler body 53, it will not interfere with the sight of the person being measured. Then, the measuring ruler body 53 of different sizes is switched through the measuring ruler switching mechanism 5 (at this time, the first hand wheel 56 is rotated to rotate the measuring ruler body 53 on the adjustment plate 52 through the shaft 51, so that the measuring ruler body 53 of the next size moves to the movable groove 4). Then, the camera 54 in the measuring ruler body 53 takes a picture of the pupil of the person being measured, thereby completing the measurement operation of the pupil distance. By arranging the pad 2 and the movable groove 4 on the same horizontal plane, the level of the person being measured's sight is maintained, thereby improving the accuracy of measuring the pupil distance.

[0034] Specifically, Figure 1 As shown, an adjustment slot 521 is provided inside the adjustment plate 52, and two sets of gears 522 and a gear row 523 meshing therewith are arranged inside the adjustment slot 521, and the two sets of gears 522 are also meshed with each other, and a limiting shaft 524 is fixedly installed at the center of each set of gears 522, and a pointer 525 is fixedly installed on the outer surface of one of the limiting shafts 524, and the gear row 523 passes through the adjustment slot 521 and is fixedly connected to the measuring ruler body 53.

[0035] By adopting the above technical solution, since the distance between each person's eyes is different, at this time, one of the gears 522 in the same group can be rotated by rotating the second hand wheel, thereby driving the other gear 522 in the same group that is meshed with it to rotate (another limit shaft 524 is rotatably connected to the inner wall of the adjustment groove 521, which can realize the rotation of the gear 522). The two gears 522 rotate. Since one of the two gears 522 rotates clockwise, the gear 522 meshing with it rotates counterclockwise, which can realize the movement of the two gear rows 523 in the same group approaching or moving away from each other, thereby driving the measuring ruler main body 53 to move, and realizing the movement of the two measuring ruler main bodies 53 in the same group adjusted according to the distance between the user's eyes, thereby further improving the accuracy of measuring the pupil distance.

[0036] Specifically, Figure 1 As shown, four groups of slots 6 are equidistantly arranged on the back of the measuring plate 3 , each group of slots 6 is engaged with a block 7 , and each group of blocks 7 is fixedly connected to the first hand wheel 56 via a spring.

[0037] By adopting the above technical solution, since there are four groups of measuring ruler bodies 53, which need to be switched, in order to ensure the accuracy during switching, the measuring ruler bodies 53 are located in the movable slots 4 on the front side of the measuring plate 3. When the measuring ruler is switched, the clamping block 7 will rotate out of the clamping slot 6 as the first hand wheel 56 rotates. At this time, the spring contracts. When the clamping block 7 enters the next clamping slot 6, the spring rebounds, so that the clamping block 7 is clamped in the clamping slot 6, thereby completing the positioning action.

[0038] Specifically, Figure 1 As shown, the back of the adjustment plate 52 is provided with a scale for use with the pointer 525.

[0039] By adopting the above technical solution, when adjusting the distance between two measuring ruler bodies 53 in the same group according to the distance between the eyes of the person being measured, the distance can be fine-tuned by pointing the pointer 525 to the position of the scale to reduce the occurrence of over-adjustment or under-adjustment.

[0040] Working principle: When measuring pupil distance, the person being measured first places his chin on the placement groove on the pad 2, and looks directly at the measuring ruler body 53 in the movable groove 4. Since the soft light group is illuminating in the measuring ruler body 53, it will not interfere with the person being measured's sight. Then, the measuring ruler switching mechanism 5 switches the measuring ruler body 53 of different sizes, and then the camera 54 in the measuring ruler body 53 takes a picture of the person being measured's pupil, thereby completing the pupil distance measurement operation. By arranging the pad 2 and the movable groove 4 on the same horizontal plane, the person being measured's sight level is maintained, thereby improving the accuracy of measuring pupil distance.

[0041] Since the distance between each person's eyes is different, at this time, one of the gears 522 in the same group can be rotated by rotating the second hand wheel, thereby driving the other gear 522 in the same group that is meshed with it to rotate. The rotation of the two gears 522 can realize the movement of the two gear rows 523 in the same group approaching or moving away from each other, thereby driving the measuring ruler body 53 to move, and realizing the movement of the two measuring ruler bodies 53 in the same group adjusted according to the distance between the user's eyes, thereby further improving the accuracy of measuring the pupil distance.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pupil distance measuring device, comprising a supporting body (1) formed by integrally connecting a backing plate (2) and a measuring plate (3), wherein the backing plate (2) is located in front and the measuring plate (3) is located in the back, characterized in that: The measuring plate (3) is provided with a movable groove (4) inside, and a measuring ruler switching mechanism (5) for replacing measuring rulers of different sizes is arranged inside the movable groove (4), and the movable groove (4) is provided in a circular shape inside the measuring plate (3), and a placement groove for matching a person's chin is provided on the pad (2), and the inner wall of the placement groove and the pad (2) are both structures of rubber-bonded sponges.

2. A pupil distance measuring device according to claim 1, characterized in that: The measuring ruler switching mechanism (5) comprises a shaft (51) rotatably mounted on the inner wall of the movable groove (4); four groups of adjustment plates (52) are equidistantly arranged on the outer surface of the shaft (51); measuring ruler bodies (53) are movably arranged on the adjustment plates (52); the adjustment plates (52) are used to adjust the distance between measuring ruler bodies (53) in the same group; cameras (54) are arranged on the measuring ruler bodies (53); a soft light ring (55) for increasing brightness is fixedly mounted on the edge of the measuring ruler bodies (53); and one end of the shaft (51) away from the adjustment plates (52) passes through the measuring plate (3) and is fixedly connected to a first hand wheel (56).

3. A pupil distance measuring device according to claim 2, characterized in that: The adjusting plate (52) is provided with an adjusting slot (521) inside, and two sets of gears (522) and gear rows (523) meshing therewith are arranged inside the adjusting slot (521), and the two sets of gears (522) are also meshed with each other, and a limiting shaft (524) is fixedly installed at the center of each set of gears (522), and a pointer (525) is fixedly installed on the outer surface of one of the limiting shafts (524), and the gear row (523) passes through the adjusting slot (521) and is fixedly connected to the measuring ruler body (53).

4. A pupil distance measuring device according to claim 2, characterized in that: The back side of the measuring plate (3) is provided with four groups of slots (6) equidistantly arranged on a circumference, each group of slots (6) is engaged with a block (7), and each group of the blocks (7) is fixedly connected to the first hand wheel (56) via a spring.

5. A pupil distance measuring device according to claim 2, characterized in that: The movable groove (4) is a groove formed on the front surface of the measuring plate (3) and can be used in conjunction with any set of measuring ruler bodies (53), and the movable groove (4) and the placement groove are located on the same horizontal plane and are used in conjunction with each other.

6. A pupil distance measuring device according to claim 2, characterized in that: The sizes of the four sets of measuring ruler bodies (53) gradually decrease in a clockwise order, the inner diameter of the inner wall of the soft light ring (55) gradually increases from the outside to the inside and is bucket-shaped, and the inner wall of the soft light ring (55) is provided with a soft light group for eye protection.

7. A pupil distance measuring device according to claim 3, characterized in that: The movable groove (4) is located on the back side of the measuring plate (3) and is an annular through hole. The two groups of limit shafts (524) are of different lengths. The longer limit shaft (524) is a second hand wheel, and the second hand wheel can perform circular motion in the annular through hole.

8. A pupil distance measuring device according to claim 7, characterized in that: The back side of the adjustment plate (52) is provided with a scale for use with the pointer (525).

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