Optometry retinoscopy device

Abstract

The invention discloses an optometry skiascopy device, and relates to the technical field of ophthalmic examination. Comprising an optometry unit body, a myopia mark scale rod is rotatably arranged on the optometry unit body, the skiascope further comprises a skiascope body and a distance adjusting unit, the distance adjusting unit comprises a first cambered plate and a base, the first cambered plate is movably installed on the myopia mark scale rod, the base is installed on the first cambered plate, and the distance adjusting unit is movably installed on the first cambered plate. A body is mounted on the base, and the distance between the body and the eyes of a patient can be adjusted in the process that the first cambered surface plate slides on the myopia mark scale rod; when a doctor needs to use a skiascope to perform vision examination on a patient, the doctor adjusts the position of the cambered surface plate on the myopia mark scale rod, and the myopia mark scale rod is provided with scale values, so that the cambered surface plate drives the skiascope to move through the base, and the distance between the skiascope and the eyes of the patient can be clearly known; and the accuracy of the eye detection result of the patient by the doctor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmic examination, in particular to an optometry and retinoscopy device. Background Art

[0002] As is known, a retinoscope is an ophthalmic device, also known as an autorefractor or autorefractometer. It is mainly used to objectively measure the refractive power of the eye, that is, the ability of the eyeball to refract light, thereby obtaining parameters such as emmetropia, myopia, hyperopia, astigmatism, etc.

[0003] The ophthalmometer checks the convergence of light after it enters the eyeball. It uses the emmetropia state as the standard to measure the difference in convergence between the examined eye and the emmetropia eye. The ophthalmometer can be used for diagnostic optometry for soft contact lens fitting. It does not require mydriasis and can quickly measure the degree of refraction. The ophthalmometer's optometry results are all automatically printed without conversion. Generally, it takes a few seconds to a few minutes to measure a patient, and can quickly measure the degree of refractive error, providing more accurate refractive power and interpupillary distance for lens correction.

[0004] According to the different projected light spots, the retinoscope is divided into point light retinoscope and strip light retinoscope. The difference is that the light source of the former is a single-filament bulb, while the light source of the latter is a strip of light projected into the eye. The light band of the strip light retinoscope is simple and the judgment is accurate, so it is the commonly used equipment at present.

[0005] The retinoscope projects light onto the fundus of the eye being examined, and moves the light spot back and forth or up and down in a certain direction to determine the direction of the shadow movement, thereby determining whether the far point of the eye being examined is in the plane of the retinoscope's eye, in front of the eye, or behind the eye. A lens with a certain reading is then placed in front of the eye of the eye being examined so that the far point of the eye being examined coincides with the plane of the retinoscope's eye, and finally the refractive error of the eye being examined is determined. Therefore, the doctor can determine whether the patient has vision problems, such as myopia, hyperopia, astigmatism, etc., and determine the exact degree so that the patient can be fitted with glasses or given other treatments. At the same time, the retinoscope can also help doctors diagnose whether the patient has eye diseases and evaluate the effects before and after surgical treatment.

[0006] The optometry device is a machine that performs optometry on the patient's eyes. A myopia scale rod is installed on the optometry device. The myopia scale rod is vertically fixed above the optometry disc and flipped down for close-range detection. It is attached with metric and imperial length unit scales. The myopia scale disc can be moved on the scale rod to accurately control the detection distance.

[0007] For example, the patent with publication number CN109567740B, publication date March 21, 2021, and name "A retinoscope based on a mobile smart terminal", the application provides a retinoscope based on a mobile smart terminal, including a retinoscope body, a mobile smart terminal, an adjustment mechanism and a fixed frame, the adjustment mechanism includes a swing rod and a connecting rod, the swing rod is pivoted on the retinoscope body, one end of the swing rod is connected to the first locking mechanism, the other end of the swing rod is connected to one end of the connecting rod through the second locking mechanism, the fixed frame is pivoted on the other end of the connecting rod, and the fixed frame is movably connected to the retinoscope body so that the fixed frame can be translated up and down and left and right relative to the retinoscope body. The retinoscope based on a mobile smart terminal provided in this application can adapt to various types of mobile smart terminals for image or video acquisition, and can quickly remove the fixed frame for human eye observation, which is easy to use.

[0008] In the prior art, the retinoscope is placed separately in a storage box. When a doctor uses the retinoscope to perform a vision test on a patient, the doctor needs to hold the retinoscope in hand to observe the light spot and shadow movement in the patient's eyes, and then determine the patient's refractive power. However, the doctor cannot determine the distance between the retinoscope and the patient's eyes when holding the retinoscope in hand, and the shaking of the retinoscope by the doctor forward, backward, left, and right will cause the distance between the retinoscope and the patient's eyes to change, making the test result inaccurate. Summary of the invention

[0009] The purpose of the present invention is to provide an optometry and retinoscopy device to solve the above problems in the prior art.

[0010] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an optometry and retinoscopy device, comprising an optometry instrument body, on which a myopia scale rod is rotatably arranged, and also comprising: a body of a retinoscope and a spacing adjustment unit, wherein the spacing adjustment unit comprises a first arc panel and a base, wherein the first arc panel is movably mounted on the myopia scale rod, the first arc panel is mounted with a base, and the base is mounted with a body, and during the sliding process of the first arc panel on the myopia scale rod, the spacing between the body and the patient's eyes can be adjusted.

[0011] As mentioned above, a light source is arranged on the top of the main body, and the light source is used to emit strip light. The position of the light source on the top of the main body is adjustable. A condenser and a reflector are arranged on the top of the light source from bottom to top in sequence, and a camera is arranged on the main body.

[0012] As mentioned above, the myopia mark scale rod is cylindrical, and the myopia mark scale rod is rotatably mounted on the optical trial disc, and a limiting member is provided on the optical trial disc for limiting the rotation of the myopia mark scale rod.

[0013] As mentioned above, a hemispherical groove is provided on the top of the base, a movable sphere is movably installed in the hemispherical groove, and a main body is installed on the movable sphere.

[0014] As mentioned above, a second arc panel is slidably mounted on the myopia mark scale rod, a connecting piece is mounted on the bottom end of the second arc panel, a myopia mark disk is rotatably mounted on the connecting piece, and the myopia mark disk is flipped down when performing close-range detection of the patient's eyes, thereby accurately controlling the detection distance.

[0015] As mentioned above, a locking ring is slidably installed on the main body, and a ring groove is provided on the top of the base located on the outside of the main body. The locking ring and the ring groove are plugged into each other. When the locking ring and the ring groove are plugged into each other, the locking ring limits the rotation of the main body and the movable ball in the hemispherical groove.

[0016] As mentioned above, an arc plate is rotatably mounted on each of the two ends of the second arc panel, and two abutment plates are symmetrically mounted on the top of the connecting member, and the two abutment plates and the corresponding arc plates are connected via a first elastic member.

[0017] As mentioned above, the inner side surfaces of the top ends of the two abutting plates are both inclined panels, the inclined surfaces of the two inclined panels are close to one end of the second arc panel, and the inclined surfaces of the two inclined panels are inclined downward from the end close to the second arc panel to the end away from the second arc panel.

[0018] As mentioned above, each inclined plate of the two clamping plates is provided with a slide groove, each of the two slide grooves is slidably installed with a sliding block, each of the two sliding blocks is rotatably installed with a support rod, and the other ends of the two support rods are connected to their corresponding arc plates in a rotatable manner.

[0019] As mentioned above, the ends of the two arc-shaped plates are each evenly provided with a plurality of square grooves along their linear directions, a positioning round rod is installed in each of the square grooves, a U-shaped plate is rotatably installed on each of the positioning round rods, and the opening direction of each of the U-shaped plates is toward the myopia mark scale rod, and the abutting ends of each of the U-shaped plates and the myopia mark scale rod are each provided with an anti-slip portion.

[0020] The beneficial effect of the present invention is that when a doctor needs to use a retinoscope to perform a vision test on a patient, the doctor flips down the myopia mark scale rod from above the test disc and adjusts the position of the arc panel on the myopia mark scale rod. Since the myopia mark scale rod is provided with scale values ​​(i.e., metric and imperial length unit scales), the arc panel drives the retinoscope to move through the base, and the distance between the retinoscope and the patient's eyes can be clearly known, thereby improving the accuracy of the doctor's eye test results for the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the main body of the present invention;

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the second curved panel and the curved plate portion of the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of a partial cross-sectional structure;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of a partially enlarged cross-sectional structure at M;

[0027] Figure 6 For the present invention Figure 4 A schematic diagram of a partially enlarged cross-sectional structure at location N;

[0028] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the main body and the first curved panel of the present invention when they slide on the myopia scale rod alone;

[0029] Figure 8 It is a schematic diagram of a partial cross-sectional structure of another embodiment of the present invention when the myopia mark plate and the second curved plate slide alone on the myopia mark scale rod;

[0030] Fig. 9 For the present invention Figure 8 A schematic diagram of a partially enlarged cross-sectional structure at P;

[0031] Fig.10 A schematic diagram of a partial cross-sectional structure of another embodiment provided by the present invention;

[0032] Fig.11 It is a schematic diagram of a partial cross-sectional structure of the main body of the present invention;

[0033] Fig.12 It is a schematic diagram of the partial cross-sectional structure of the observer and the subject of the present invention when using the main body for observation;

[0034] Fig.13 It is a schematic diagram of the partial cross-sectional structure of a camera installed inside the body of the present invention.

[0035] Description of reference numerals:

[0036] 1. Main body; 2. First arc panel; 3. Base; 4. Myopia scale rod; 5. Test disc; 6. Limiting piece; 7. Hemispherical groove; 8. Movable sphere; 9. Locking ring; 10. Ring groove; 11. Second arc panel; 12. Connecting piece; 13. Myopia scale plate; 14. Arc plate; 15. Clamping plate; 16. First elastic piece; 17. Slide groove; 18. Sliding block; 19. Fifth elastic piece; 20. Support rod; 21. Auxiliary groove; 22. Auxiliary block; 23. Auxiliary rod; 24, square groove; 25, positioning round rod; 26, U-shaped plate; 27, second elastic member; 28, flat groove; 29, inclined plate; 30, third elastic member; 31, through groove; 32, clamping rod; 33, return plate; 34, fourth elastic member; 35, limit groove; 36, through groove; 37, connecting rope; 38, light source; 39, swing structure; 40, condenser; 41, reflector; 42, camera; 43, subject; 44, observer; 45, observation hole. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] In each embodiment of the present invention, based on the convenience of description and understanding rather than limitation of rights, the orientation words in this embodiment: "center", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0039] like Figures 1 to 13 As shown, an optometry and retinoscopy device provided by an embodiment of the present invention includes an optometry instrument main body, on which a myopia scale rod 4 is rotatably arranged, and also includes: a main body 1 and a spacing adjustment unit, wherein the spacing adjustment unit includes a first arc panel 2 and a base 3, wherein the first arc panel 2 is movably mounted on the myopia scale rod 4, the first arc panel 2 is mounted with the base 3, and the main body 1 is mounted on the base 3, and during the sliding process of the first arc panel 2 on the myopia scale rod 4, the spacing between the main body 1 and the patient's eyes can be adjusted.

[0040] Specifically, the main body of the ophthalmometer is the ophthalmometer, and the ophthalmometer disc 5 is a part of the main body of the ophthalmometer (, the ophthalmometer can be used for diagnostic optometry for soft corneal contact lens fitting, and can quickly measure the degree of refraction without dilation of the pupil. All the ophthalmometer optometry results are automatically printed without conversion. Generally, a patient can be measured in a few seconds to a few minutes, and the degree of refractive error can be quickly measured, providing more accurate refractive degree and interpupillary distance for lens correction. The myopia scale rod 4 is rotatably installed on the ophthalmometer disc 5, and the main body 1 is a retinoscope, which is an ophthalmic device, also known as an automatic refractor or automatic refractometer.It is mainly used to objectively measure the refractive power of the eye, that is, the refracting ability of the eyeball to light, so as to obtain parameters such as emmetropia, myopia, hyperopia, astigmatism, etc. The main body 1 is arranged on the base 3, the myopia scale rod 4 is cylindrical, the center of the first arc panel 2 and the myopia scale rod 4 coincide, and the inner wall of the first arc panel 2 and the outer wall of the myopia scale rod 4 fit each other, the first arc panel 2 is a major arc plate (in the same circle, the arc with an arc length greater than the semicircle circumference is called the major arc, and the arc with an arc length less than the semicircle circumference is called the minor arc. The major arc plate is slidably installed on the myopia scale rod 4. Since the arc length of the major arc plate is greater than the semicircle circumference of the myopia scale rod 4, when the first arc panel 2 slides on the myopia scale rod 4, no The risk of the first arc panel 2 slipping off the outer wall of the myopia mark scale rod 4), the myopia mark scale rod 4 is rotatably mounted on the test disc 5, and a plug-in system is arranged in the base 3 on the first arc panel 2, and the plug-in system is used to power the main body 1 so as to power the retinoscopy part of the main body 1. Since the main body 1 needs to slide back and forth, the plug-in system can be a busbar structure or equipped with a retractable spiral cable. This is the prior art and will not be repeated here. The myopia mark scale rod 4 is provided with scale values ​​(that is, metric and imperial length unit scales) to facilitate the knowledge of the sliding position of the first arc panel 2 on the myopia mark scale rod 4. When the main body 1 needs to be used to perform an eye examination on the patient, the doctor pushes the first arc panel 2 on the myopia mark scale rod 4, the first arc panel 2 drives the body 1 to slide to a suitable inspection position (that is, the position when the doctor needs to inspect the patient) through the base 3, so that the distance between the body 1 and the patient's eyes reaches the inspection distance required by the doctor, and the doctor can also know the distance between the body 1 and the patient's eyes through the scale on the myopia scale rod 4, so that the doctor uses the body 1 to inspect the patient's eyes. The test result is more accurate; in the prior art, the retinoscope is placed separately in the storage box. When the doctor uses the retinoscope to inspect the patient's vision, the doctor needs to hold the retinoscope to observe the light spot and shadow movement in the patient's eyes, and then judge the patient's refractive power, but the doctor holding The retinoscope cannot determine the distance between the retinoscope and the patient's eyes, and the doctor's shaking of the retinoscope forward, backward, left, and right will cause the distance between the retinoscope and the patient's eyes to change, making the test result inaccurate; in the present embodiment, when the doctor needs to use the retinoscope to perform a vision test on the patient, the doctor flips down the myopia mark scale rod 4 from above the test disc 5, and adjusts the position of the arc panel on the myopia mark scale rod 4. Since the myopia mark scale rod 4 is provided with a scale value (that is, the metric and imperial length unit scale), the arc panel drives the retinoscope to move through the base 3, and the distance between the retinoscope and the patient's eyes can be clearly known, thereby improving the accuracy of the doctor's test results on the patient's eyes.

[0041] Furthermore, a light source 38 is disposed on the top of the main body 1, and the light source 38 is used to emit strip light. The position of the light source 38 on the top of the main body 1 is adjustable, and a condenser 40 and a reflector 41 are disposed on the main body 1 in sequence from bottom to top at the top of the light source 38.

[0042] Specifically, the condenser 40 is arranged in the optical path of the light source 38 to focus the light emitted by the light source 38. The reflector 41 is arranged at an inclination of 45 degrees. The reflector 41 is used to rotate the light emitted by the light source 38 and the condenser 40 by 90 degrees. Because the light source 38 plus the condenser 40 can make the light become parallel light, it is convenient for the observer 44 to observe (such as Fig.11 , 12 As shown in FIG. 1 , the top of the body 1 is also provided with a swing structure 39, which can drive the light source 38 on the top of the body 1 to reciprocate in all directions (i.e. 360 degrees) (the swing structure 39 can be a bellows or a ball joint connecting rod structure), and the light source 38 can emit a strip of light to reciprocate in all directions on the plane where the eyes of the subject 43 (i.e. the patient) are located, and the strip of light can rotate in all directions with the light band as the center. When the doctor uses the body 1 to perform an eye test on the patient, the doctor projects light on the fundus of the patient through the light source 38, moves the light spot back and forth or up and down in a certain direction, and determines the direction of the shadow movement, thereby determining whether the patient's eye far point is in the doctor's eye plane, in front of the eye or behind the eye, and then places a lens with a certain reading in front of the patient's eye, so that the patient's eye far point coincides with the doctor's eye plane, and finally the patient's eye refractive error is obtained. Therefore, the doctor can determine whether the patient has vision problems, such as myopia, hyperopia, astigmatism, etc., and determine the accurate degree, so as to fit the patient with glasses or perform other treatments.

[0043] Furthermore, the body 1 is provided with a camera 42; specifically, in the prior art, the body 1 is provided with an observation hole 45, and the observer 44 (i.e., the doctor) observes the image movement from behind the observation hole 45 of the reflector 41. By providing the camera 42 on the body 1, it is not necessary to provide the observation hole 45 on the body 1, but the position of the observation hole 45 is replaced by the camera 42, and the observer 44 can obtain the image on the reflector 41 from the display screen (e.g., Fig.13 As shown), the camera 42 can be set to rotate in multiple directions, so that the camera 42 can shoot the image on the reflector 41 from multiple angles, so that the observer 44 can more conveniently detect the vision of the subject 43.

[0044] Furthermore, the myopia mark scale rod 4 is cylindrical, and the myopia mark scale rod 4 is rotatably installed on the test optical disc 5, and has a horizontal position and a vertical position in the rotation stroke. A limiting member 6 is provided on the test optical disc 5, which is used to limit the rotation of the myopia mark scale rod 4. Specifically, when the main body 1 is not needed, the myopia mark scale rod 4 is vertically placed on the test optical disc 5, and the myopia mark scale rod 4 in the vertical position is limited by the limiting member 6. When the main body 1 needs to be used, the limiting operation of the myopia mark scale rod 4 by the limiting member 6 is released. The limiting member 6 can be a manual latch or an elastic limiting member. Limiting the rotation of the myopia mark scale rod 4 is common knowledge in the field and will not be repeated.

[0045] Furthermore, a hemispherical groove 7 is provided at the top of the base 3, and a movable sphere 8 is movably installed in the hemispherical groove 7, and the main body 1 is installed on the movable sphere 8. Specifically, when the doctor uses the main body 1 to examine the patient's eyes, it is often necessary to tilt and rotate the main body 1. The movable installation of the main body 1 by the movable sphere 8 and the hemispherical groove 7 has a certain friction resistance. The friction resistance is greater than the gravity of the main body 1, so that the main body 1 can stop at any position of the rotation, so that the main body 1 can meet the doctor's requirements for tilting and rotating the main body 1.

[0046] Preferably, a locking ring 9 is slidably mounted on the main body 1, and a circular groove 10 is provided on the top of the base 3 located on the outer side of the main body 1. The locking ring 9 and the circular groove 10 are plugged into each other. When the locking ring 9 and the circular groove 10 are plugged into each other, the locking ring 9 limits the rotation of the main body 1 and the movable sphere 8 in the hemispherical groove 7. Specifically, when the doctor needs to use the main body 1, the doctor takes the locking ring 9 out of the circular groove 10, so that the locking ring 9 no longer limits the main body 1 and the movable sphere 8. When the doctor has finished using the main body 1, the doctor slides the locking ring 9 from the main body 1 into the circular groove 10, so that the locking ring 9 limits the main body 1 and the movable sphere 8 to prevent the main body 1 from swinging.

[0047] Furthermore, a second curved panel 11 is slidably mounted on the myopia scale rod 4, a connecting piece 12 is mounted at the bottom end of the second curved panel 11, a myopia scale plate 13 is rotatably mounted on the connecting piece 12, that is, the myopia scale plate 13 and the body 1 are arranged on opposite sides of the myopia scale rod 4, and the myopia scale plate 13 is flipped down when performing a close-range eye test on the patient, so as to accurately control the detection distance; an arc plate 14 is rotatably mounted on each of the two ends of the second curved panel 11, and the connecting piece 12 is rotatably mounted on the bottom end of the second curved panel 11. Two abutment plates 15 are symmetrically installed at the top, and the two abutment plates 15 and the corresponding arc plates 14 are connected by a first elastic member 16. Specifically, the center of the second arc panel 11 coincides with the center of the myopia scale rod 4, and the inner wall of the second arc panel 11 and the outer wall of the myopia scale rod 4 fit each other. The second arc panel 11 is a superior arc panel (that is, the circumference of the arc surface of the second arc panel 11 is greater than the semicircle circumference of the myopia scale rod 4), so that the second arc panel 11 will not slide on the myopia scale rod 4 when sliding. When the two arc plates 14 and the second arc plate 11 fall off, the rotational connection position of the two arc plates 14 and the second arc plate 11 is far away from the myopia mark scale rod 4. Since the pressing plate 15 is fixedly installed on the connecting member 12, the first elastic member 16 (the first elastic member 16 is a member capable of telescopic reset, preferably a spring) provides an elastic force to the corresponding arc plate 14 (the first elastic member 16 is always in a squeezed and stored state when pressing against the arc plate 14), so that the first elastic member 16 presses the arc plate 14 against the outer wall of the myopia mark scale rod 4 , so that the two arc plates 14 clamp the second arc plate 11 on the myopia mark scale rod 4, further improving the stability of the second arc plate 11 sliding on the myopia mark scale rod 4. When the doctor needs to use the myopia mark disk 13, the doctor releases the limiting operation of the limiting member 6 on the myopia mark scale rod 4, and puts down the myopia mark scale rod 4 and the myopia mark disk 13. When the position of the myopia mark disk 13 on the myopia mark scale rod 4 needs to be adjusted, the doctor pushes the second arc plate 11 and the connecting member 12 to slide on the myopia mark scale rod 4. The second curved panel 11 and the connecting piece 12 drive the myopia scale plate 13 to move, so that the myopia scale plate 13 slides to the accurate use position on the myopia scale rod 4, and the first elastic piece 16 and the curved plate 14 clamp the outer wall of the myopia scale rod 4, so that the second curved panel 11, the connecting piece 12 and the myopia scale plate 13 will not slide off the myopia scale rod 4. At this time, the first curved panel 2 is located on the side of the myopia scale rod 4 away from the trial lens 5, preventing the main body 1 on the first curved panel 2 from affecting the use of the myopia scale plate 13.

[0048] In another embodiment provided by the present invention, the top inner side surfaces of the two clamping plates 15 are both inclined panels, and the inclined surfaces of the two inclined panels are close to one end of the second arc panel 11, and the inclined surfaces of the two inclined panels are inclined downward from the end close to the second arc panel 11 to the end away from the second arc panel 11; the inclined panels of the two clamping plates 15 are each provided with a slide groove 17, and a sliding block 18 is slidably installed in each of the two slide grooves 17, and the two sliding blocks 18 are connected to the inner walls of the corresponding slide grooves 17 by a fifth elastic member 19, and a support rod 20 is rotatably installed on each of the two sliding blocks 18, and the other ends of the two support rods 20 are connected to the corresponding arc plate 14 in a rotatable cooperation manner, and an auxiliary groove 21 is respectively provided on the two support rods 20, and an auxiliary block 22 is slidably installed in each of the two auxiliary grooves 21, and an auxiliary rod 23 is rotatably installed on each of the two auxiliary blocks 22, and the ends of the two auxiliary rods 23 are rotatably connected between the side walls of the inclined panels of the corresponding clamping plates 15.

[0049] Specifically, due to the instability of the first elastic member 16 against the arc plate 14, the arc plate 14 is not stable in clamping the outer wall of the myopia mark scale rod 4. Due to excessive force applied by the doctor during use, the second arc plate 11 may slip off the myopia mark scale rod 4. When the doctor pulls the second arc plate 11 outward from the myopia mark scale rod, the two arc plates 14 will rotate away from the end of the myopia mark scale rod 4 on the second arc plate 11. When one end of the scale rod 4 rotates, the arc plate 14 applies a certain pressure to the support rod 20. The support rod 20 is subjected to the pressure of the arc plate 14, which drives the sliding block 18 to slide in the slide groove 17. Since the sliding of the sliding block 18 in the slide groove 17 is restricted by the fifth elastic member 19 (the fifth elastic member 19 is a member capable of telescopic reset, preferably a spring), the fifth elastic member 19 provides a certain elastic support for the sliding block 18, so that the elastic support of the fifth elastic member 19 is achieved through the sliding block 18 and the support rod 20. The rod 20 acts on the arc plate 14 to prevent the arc plate 14 from rotating at the end of the second arc plate 11 away from the myopia mark scale rod 4. At the same time, due to the rotation of the support rod 20, the auxiliary block 22 slides in the auxiliary groove 21, so that the auxiliary rod 23 does not affect the rotation of the support rod 20. When the arc plate 14 rotates at the end of the second arc plate 11 away from the myopia mark scale rod 4 until the arc plate 14 is about to disengage from the myopia mark scale rod 4 (that is, the clamping of the arc plate 14 on the myopia mark scale rod 4 is about to be released), the arc plate 14 is not allowed to rotate. When the sliding block 18 slides to the maximum extent in the slide groove 17 (that is, the sliding block 18 and the inner wall of the slide groove 17 are pressed against each other), the sliding block 18 no longer slides in the slide groove 17, so that the sliding block 18 limits the arc plate 14 from continuing to rotate through the support rod 20, and the auxiliary block 22 also slides to the maximum extent in the auxiliary groove 21 (that is, the auxiliary block 22 and the inner wall of the auxiliary groove 21 are pressed against each other). At this time, the support rod 20, the sliding block 18, the slide groove 17 and the auxiliary rod 23 form a triangular structure (such as Fig.10 As shown), the support rod 20 supports the arc plate 14 more stably, so that the arc plate 14 will not be separated from the myopia scale rod 4, ensuring the stability of the arc plate 14 clamping the myopia scale rod 4, making the installation of the myopia mark plate 13 more stable.

[0050] In another embodiment provided by the present invention, the ends of the two arc-shaped plates 14 are each uniformly provided with a plurality of square grooves 24 along their linear directions, a positioning round rod 25 is installed in each of the square grooves 24, a U-shaped plate 26 is rotatably installed on each of the positioning round rods 25, and the opening direction of each of the U-shaped plates 26 is toward the myopia mark scale rod 4, and the abutting ends of each of the U-shaped plates 26 and the myopia mark scale rod 4 are each provided with an anti-slip portion; each of the positioning round rods 25 is eccentrically arranged on the corresponding U-shaped plate 26, and one side of each of the U-shaped plates 26 close to the inner wall of the square groove 24 is connected to the corresponding inner wall of the square groove 24 through a second elastic member 27.

[0051] Specifically, since the abutting portion of the arc plate 14 and the myopia scale rod 4 has only a linear contact surface, the clamping of the arc plate 14 on the myopia scale rod 4 may easily slip. When the arc plate 14 clamps the myopia scale rod 4, the U-shaped plate 26 on the arc plate 14 is pressed against the outer wall of the myopia scale rod 4, so that the two ends of the U-shaped plate 26 are pressed against the outer wall of the myopia scale rod 4 (such as Figure 8 As shown), the anti-skid parts at the two ends of the U-shaped plate are pressed against the outer wall of the myopia mark scale rod 4, and a certain elastic force is applied to the U-shaped plate and the anti-skid part through the second elastic member 27 (the second elastic member 27 is an element capable of telescopic reset, preferably a spring), so that the U-shaped plate and the anti-skid part clamp the outer wall of the myopia mark scale rod 4 more stably, and the U-shaped plate is eccentrically rotated and installed, so that the distance between the ends of the U-shaped plates located on the two arc plates 14 is closer to each other, so that the second arc panel 11, the two arc plates 14 and the U-shaped plate are combined to form a ring body, so that the two arc plates 14 clamp the myopia mark scale rod 4 more stably.

[0052] In another embodiment provided by the present invention, two flat grooves 28 are symmetrically formed at the two ends of the first curved plate 2, and an inclined plate 29 is slidably installed in each of the two flat grooves 28. The inclined surfaces of the two inclined plates 29 are inclined downward from the end close to the myopia scale rod 4 to the end away from the myopia scale rod 4. The inner walls of the two flat grooves 28 and the corresponding inclined plates 29 are connected by a third elastic member 30. The side walls of the two flat grooves 28 close to the myopia scale rod 4 are connected along the linear direction thereof. A plurality of through grooves 31 are evenly provided on the upper surface, and a clamping rod 32 is slidably installed in each of the through grooves 31, and each of the clamping rods 32 is pressed against the inclined surface of the corresponding inclined plate 29, and a return plate 33 is installed on each of the clamping rods 32, and each of the return plates 33 and the inner wall of the corresponding through groove 31 are connected by a fourth elastic member 34, and a limiting groove 35 is respectively provided at the two ends of the second arc panel 11, and the two limiting grooves 35 are used in conjunction with the corresponding inclined plates 29.

[0053] Specifically, the elastic force of the third elastic member 30 (the third elastic member 30 is a member capable of telescopic reset, preferably a spring) is greater than the elastic force of all the fourth elastic members 34 (the fourth elastic member 34 is a member capable of telescopic reset, preferably a spring), that is, the elastic force applied by the third elastic member 30 to the inclined plate 29 is greater than the elastic force applied by the fourth elastic member 34 to the return plate 33. In the initial position, the third elastic member 30 applies a certain elastic force to the inclined plate 29, so that the inclined plate 29 exerts a certain elastic force on each of the clamping rods 3 2 performs a pressing action. Since the inclined surface of the inclined plate 29 abuts against each clamping rod 32, the clamping rod 32 is squeezed by the inclined plate and pressed against the outer wall of the myopia mark scale rod 4, so that the clamping rod 32 clamps the myopia mark scale rod 4. At this time, the clamping rod 32 drives the return plate 33 to move close to the myopia mark scale rod 4, so that the return plate 33 squeezes the fourth elastic member 34, so that the clamping rod 32 clamps the myopia mark scale rod 4 more stably, thereby improving the stability of the sliding setting of the first arc plate 2 on the myopia mark scale rod 4.

[0054] In another embodiment provided by the present invention, two mutually symmetrical through grooves 36 are provided on the bottom end of the base 3 and the first curved plate 2, one end of the two through grooves 36 is connected to the hemispherical groove 7, and the other ends of the two through grooves 36 are respectively connected to the corresponding flat grooves 28, and a connecting rope 37 is provided in each of the two through grooves 36, one end of the two connecting ropes 37 is respectively connected to the corresponding inclined plates 29, and the other end of the two connecting ropes 37 is connected to the bottom end of the movable sphere 8 (that is, the bottom end of the movable sphere 8 when the main body 1 is in a perpendicular position to the myopia scale rod 4, and the other end of the through groove 36 is provided at the bottom of the hemispherical groove 7).

[0055] Specifically, when the doctor needs to push the main body 1 and the first arc panel 2 to slide on the myopia mark scale rod 4, the doctor takes the locking ring 9 out of the annular groove 10, so that the locking ring 9 no longer limits the main body 1 and the movable sphere 8. The doctor pushes the main body 1 and the movable sphere 8 to swing in the hemispherical groove 7. Since the movable sphere 8 swings in the hemispherical groove 7, the movable sphere 8 pulls the connecting rope 37 to move into the hemispherical groove 7. The connecting rope 37 pulls the inclined plate 29 to slide toward one end inside the flat groove 28, so that the inclined plate 29 squeezes the third elastic member 30, so that the third elastic member 30 is in a compressed state. Since the inclined surface of the inclined plate 29 no longer forces the clamping rod 32 to press against the myopia mark scale rod 4, under the rebound action of the fourth elastic member 34, the fourth elastic member 34 is The part 34 drives the clamping rod 32 to slide into the groove 31 through the return plate 33, so that the clamping rod 32 is no longer pressed against the myopia mark scale rod 4, so as to reduce the friction between the first arc plate 2 and the myopia mark scale rod 4 when the doctor pushes the main body 1; when the doctor does not need to use the main body 1, the doctor slides the locking ring 9 into the annular groove 10, so that the locking ring 9 limits the main body 1 and the movable ball 8, so that the main body 1 and the myopia mark scale rod 4 are perpendicular to each other, and under the rebound action of the third elastic member 30, the third elastic member 30 applies a certain elastic force to the inclined plate 29, so that the inclined plate 29 presses each clamping rod 32, so that the clamping rod 32 is squeezed by the inclined plate and pressed against the outer wall of the myopia mark scale rod 4, so that the clamping rod 32 clamps the myopia mark scale rod 4.

[0056] When the doctor does not need to use the main body 1 and the myopia mark plate 13, the first arc panel 2 and the second arc panel 11 need to be slid on the myopia mark scale rod 4 to a position where they overlap with each other, that is, the two ends of the first arc panel 2 and the second arc panel 11 abut against each other. At this time, the doctor needs to push the main body 1 and the movable sphere 8 to swing in the hemispherical groove 7. Since the movable sphere 8 swings in the hemispherical groove 7, the movable sphere 8 pulls the connecting rope 37 to move into the hemispherical groove 7. The connecting rope 37 pulls the inclined plate 29 to slide toward one end inside the flat groove 28, so that the inclined plate 29 is completely in the flat groove 28. The doctor slides the two ends of the first arc panel 2 onto the second arc panel 11 until the two inclined plates 29 on the first arc panel 2 are aligned with the limit grooves 35 on the second arc panel 11, and the doctor releases the body. 1 provides a thrust and pushes the body 1 to a position perpendicular to the myopia mark scale rod 4. Under the rebound effect of the third elastic member 30, the third elastic member 30 applies a certain elastic force to the inclined plate 29, so that the inclined plate 29 slides into the limiting groove 35, so that the insertion between the inclined plate 29 and the limiting groove 35 performs a positioning operation on the first arc panel 2 and the second arc panel 11 to prevent the first arc panel 2 and the second arc panel 11 from sliding against each other. At the same time, the inclined plate 29 presses each clamping rod 32, so that the clamping rod 32 is squeezed by the inclined plate and pressed against the outer wall of the myopia mark scale rod 4, so that the clamping rod 32 clamps the myopia mark scale rod 4, so that the first arc panel 2 and the second arc panel 11 will not slide, so that the body 1 and the myopia mark plate 13 are placed more stably.

[0057] When the main body 1 and the myopia mark plate 13 need to give way to each other (the main body 1 needs to be close to the test light plate 5 and the myopia mark plate 13 needs to be away from the test light plate 5 or the main body 1 needs to be away from the test light plate 5 and the myopia mark plate 13 needs to be close to the test light plate 5), that is, when the first arc panel 2 needs to slide over the second arc panel 11, the doctor needs to push the main body 1 and the movable sphere 8 to swing in the hemispherical groove 7. Since the movable sphere 8 swings in the hemispherical groove 7, the movable sphere 8 pulls the connecting rope 37 to move into the hemispherical groove 7, and the connecting rope 37 pulls the inclined plate 29 to slide toward one end inside the flat groove 28, so that the inclined plate 29 is completely in the flat groove 28. The doctor slides the two ends of the first arc panel 2 onto the second arc panel 11 until the first arc panel 2 slides over the second arc panel 11, thereby achieving mutual giving way of the main body 1 and the myopia mark plate 13.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An optometry device, comprising an optometry instrument body, on which a myopia scale rod is rotatably provided, characterized in that: Also includes: The main body of the retinoscope and a distance adjustment unit, the distance adjustment unit includes a first arc panel and a base, the first arc panel is movably mounted on a myopia scale rod, the first arc panel is mounted on the base, the main body is mounted on the base, and the distance between the main body and the patient's eyes can be adjusted during the sliding of the first arc panel on the myopia scale rod.

2. The optometry and retinoscopy device according to claim 1, characterized in that: A light source is arranged on the top of the main body, and the light source is used to emit strip light. The position of the light source on the top of the main body is adjustable. A condenser and a reflector are arranged on the top of the light source from bottom to top in sequence on the main body, and a camera is arranged on the main body.

3. The optometry and retinoscopy device according to claim 1, characterized in that: The myopia mark scale rod is cylindrical and is rotatably mounted on the optical trial disc. A limiting piece is arranged on the optical trial disc to limit the rotation of the myopia mark scale rod.

4. The optometry and retinoscopy device according to claim 1, characterized in that: A hemispherical groove is provided on the top of the base, a movable sphere is movably installed in the hemispherical groove, and a body is installed on the movable sphere.

5. The optometry and retinoscopy device according to claim 1, characterized in that: A second arc panel is slidably mounted on the myopia mark scale rod, a connecting piece is mounted on the bottom end of the second arc panel, a myopia mark disk is rotatably mounted on the connecting piece, and the myopia mark disk is flipped down when performing close-range eye detection on a patient, thereby accurately controlling the detection distance.

6. The optometry and retinoscopy device according to claim 1, characterized in that: A locking ring is slidably installed on the main body, and a ring groove is provided on the top of the base located on the outer side of the main body. The locking ring and the ring groove are plugged into each other. When the locking ring and the ring groove are plugged into each other, the locking ring limits the rotation of the main body and the movable ball in the hemispherical groove.

7. The optometry and retinoscopy device according to claim 5, characterized in that: An arc plate is rotatably mounted on each of the two ends of the second arc panel, and two abutting plates are symmetrically mounted on the top of the connecting member. The two abutting plates and the corresponding arc plates are connected via a first elastic member.

8. The optometry and retinoscopy device according to claim 7, characterized in that: The inner side surfaces of the top ends of the two abutting plates are both inclined panels, the inclined surfaces of the two inclined panels are close to one end of the second arc panel, and the inclined surfaces of the two inclined panels are inclined downward from the end close to the second arc panel to the end away from the second arc panel.

9. The optometry and retinoscopy device according to claim 8, characterized in that: A slide groove is respectively provided on the inclined panels of the two clamping plates, a sliding block is slidably installed in each of the two slide grooves, a support rod is rotatably installed on each of the two sliding blocks, and the other ends of the two support rods are connected to their corresponding arc plates in a rotatable matching manner.

10. The optometry and retinoscopy device according to claim 7, characterized in that: The ends of the two arc-shaped plates are each evenly provided with a plurality of square grooves along their linear directions, a positioning round rod is installed in each of the square grooves, a U-shaped plate is rotatably installed on each of the positioning round rods, and the opening direction of each of the U-shaped plates is toward the myopia mark scale rod, and an anti-slip portion is provided at the abutting end of each of the U-shaped plates and the myopia mark scale rod.

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