Respectoscope with linkage shaft position adjustment function

Abstract

The utility model relates to the technical field of visual optics, in particular to a skiascopy row lens with linkage axial position adjustment, which aims to solve the technical problem that row lens lenses are lack of axial position adjustment in the prior art, and specifically comprises a row lens rod, a plurality of accommodating grooves are arranged on the row lens rod side by side along the length direction, and lenses with astigmatism axial positions are correspondingly arranged in the accommodating grooves. The diopters of the lenses in the containing grooves are different, lens frames are correspondingly arranged between the lenses and the containing grooves, the inner edges of the lens frames are fixedly connected with the lenses, the outer edges of the lens frames are rotationally connected with the containing grooves, driving teeth for driving the lens frames to rotate are fixedly arranged on the lower portions of the lens frames, and transmission teeth are correspondingly arranged on the lens row rods between the adjacent lens frames. The transmission teeth are used for being matched with the driving teeth to drive the lenses in the lens frames to rotate synchronously for position adjustment. According to the utility model, through the arrangement of the lens frame, the driving teeth and the transmission teeth, the axial position of the lenses can be quickly adjusted, and the optometry efficiency and accuracy are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optometry, in particular to a retinoscopy lens array with a linkage axis position adjustment function. Background Art

[0002] Compared with traditional optometry equipment (such as trial lens frames and comprehensive optometers), retinoscopy lens arrays have the advantages of being convenient to carry and quickly increasing or decreasing the diopter. They are especially suitable for field surveys and situations where it is inconvenient to carry a lens box.

[0003] The utility model patent with the patent number "CN204520622U" discloses a retinoscopy lens array and a retinoscopy lens array group. The retinoscopy lens array includes a lens array body, one end of the lens array body is configured as a holding part for holding, and a plurality of lenses with different diopters are arranged on the lens array body. When using this retinoscopy lens array for retinoscopy optometry, lenses with different diopters can be switched without any mechanical action, thus greatly improving the efficiency of retinoscopy optometry.

[0004] However, this technical solution does not consider the usage scenarios of astigmatic patients. Since the eyes of astigmatic patients not only need to consider the diopter but also need to accurately match their unique astigmatism axis, and the lenses in this technical solution are fixedly installed on the lens array body and lack the function of adjusting the axis position. This results in that in actual applications, optometrists cannot directly use this retinoscopy lens array to provide accurate optometry services for astigmatic patients, thus limiting its wide application and convenience. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a retinoscopy lens array with a linkage axis position adjustment function in view of the deficiencies of the prior art.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A retinoscopy lens array with a linkage axis position adjustment function is characterized in that it includes a lens array rod, a plurality of accommodation grooves are arranged side by side along the length direction on the lens array rod, lenses with astigmatism axes are correspondingly arranged in the accommodation grooves, the diopters of the lenses in each accommodation groove are different from each other, a lens frame is correspondingly arranged between the lens and the accommodation groove, the inner edge of the lens frame is fixedly connected to the lens, the outer edge of the lens frame is rotatably connected to the accommodation groove, a driving tooth for driving the rotation of the lens frame is fixedly arranged at the lower part of the lens frame, and a transmission tooth is correspondingly arranged on the lens array rod between adjacent lens frames, and the transmission tooth is used to cooperate with the driving tooth to drive the lenses in each lens frame to rotate synchronously for position adjustment.

[0008] The technical problem to be solved by the utility model can be further realized by the following steps: a stop ring is fixedly arranged at the lower part of the inner edge of the lens frame, a pressing ring is threadedly connected to the upper part of the inner edge of the lens frame, and the lens is fixedly arranged between the stop ring and the pressing ring.

[0009] The technical problem to be solved by the utility model can be further achieved through the following steps: a transition groove is provided on the mirror rod between adjacent accommodating grooves, a transmission wheel is rotatably installed in the transition groove, and the transmission teeth are fixedly arranged on the outer edge of the transmission wheel and mesh with the driving teeth of two adjacent mirror frames for transmission.

[0010] The technical problem to be solved by the utility model can be further achieved by the following steps: a driving section that is convenient for manual manipulation is provided on at least one driving tooth, and the driving section is arranged outside the mirror rod.

[0011] The technical problem to be solved by the utility model can be further achieved through the following steps: the diameter of the tooth top circle of the driving tooth is greater than the width of the mirror row rod.

[0012] The technical problem to be solved by the utility model can be further achieved by the following steps: the top circle diameter of the driving tooth is not greater than the width of the mirror rod, an inwardly recessed tooth groove is provided on at least one side of the mirror rod, and the driving section is arranged in the tooth groove.

[0013] The technical problem to be solved by the utility model can be further achieved by the following steps: a retaining spring is provided between the lens frame and the receiving groove, and the lens frame is rotatably installed in the receiving groove by the retaining spring.

[0014] The technical problem to be solved by the utility model can be further achieved by the following steps: an axial positioning point corresponding to the axis of the lens is provided on the frame, and a positioning scale ring matching the axial positioning point is provided on the upper surface of the mirror rod.

[0015] The technical problem to be solved by the utility model can be further achieved by the following steps: 4 accommodating grooves are equidistantly arranged, and the refractive powers of the lenses are -0.25D, -0.50D, -1.00D, and -1.50D from left to right.

[0016] Compared with the prior art, the beneficial effect of the utility model is that by setting the frame, driving teeth and transmission teeth, the lens axis position can be quickly adjusted, so that the optometrist can provide astigmatism patients with optometry services that accurately match their astigmatism axis position according to actual optometry needs, which significantly improves the optometry efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall top view of the utility model;

[0018] Figure 2 for Figure 1 A partial cross-sectional schematic diagram along the A direction;

[0019] Figure 3 It is a schematic diagram of the utility model viewed from above;

[0020] Figure 4 is the front view exploded schematic diagram of the present utility model;

[0021] In the figure: 1 - lens row rod; 2 - accommodation groove; 3 - lens; 4 - lens frame; 5 - driving gear; 6 - transmission gear; 7 - stop ring; 8 - pressing ring; 9 - transition groove; 10 - transmission wheel; 11 - driving section; 12 - tooth - exposing groove; 13 - circlip; 14 - axial positioning point; 15 - positioning scale ring. Specific embodiments

[0022] The following further describes the specific technical solutions of the present utility model to enable those skilled in the art to further understand the present utility model without constituting a limitation to its rights.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the utility model.

[0024] Please refer to Figures 1-4 , a retinoscopy lens row with a linkage axial position adjustment, including a lens row rod 1, one end of the lens row rod 1 is set as a handheld part, a plurality of accommodation grooves 2 are arranged side - by - side along the length direction on the lens row rod 1, and lenses 3 with astigmatic axes are correspondingly arranged in the accommodation grooves 2, the diopters of the lenses in each accommodation groove are different from each other, a lens frame 4 is correspondingly arranged between the lens 3 and the accommodation groove 2, the inner edge of the lens frame 4 is fixedly connected with the lens 3, the outer edge of the lens frame 4 is rotatably connected with the accommodation groove 2, a driving gear 5 for driving its rotation is fixedly arranged at the lower part of the lens frame 4, a transmission gear 6 is correspondingly arranged on the lens row rod 1 between adjacent lens frames 4, and the transmission gear 6 is used to cooperate with the driving gear 5 to drive the lenses 3 in each lens frame 4 to rotate synchronously for position adjustment. The lenses 3, the lens frames 4 and the accommodation grooves 2 are all coaxially arranged, and the central line of the axis connection of each lens 3 coincides with the mid - line in the length direction of the lens row rod 1.

[0025] Refer to Figure 2 , a stop ring 7 is fixedly arranged at the lower part of the inner edge of the lens frame 4, and a pressing ring 8 is threadedly connected to the upper part of the inner edge of the lens frame 4, and the lens 3 is fixedly arranged between the stop ring 7 and the pressing ring 8. In this way, the lens 3 is fixed by the stop ring 7 and the pressing ring 8, with a compact and stable structure, effectively preventing the lens 3 from shifting or loosening during the adjustment process.

[0026] Refer to Figures 2-4A transition groove 9 is provided on the mirror row rod 1 between adjacent accommodating grooves 2, and a transmission wheel 10 is rotatably installed in the transition groove 9. The transmission teeth 6 are fixedly arranged on the outer edge of the transmission wheel 10 and mesh with the driving teeth 5 of two adjacent mirror frames 4. The rotating wheel is rotatably installed on the mirror row rod 1 by connecting bolts, with a compact structure and convenient disassembly and assembly.

[0027] Reference Figure 1 , 3 In order to facilitate the rotation of the frame 4 to adjust the axial position of the lens, a driving section 11 is provided on at least one driving tooth 5 for easy manual manipulation, and the driving section 11 is exposed outside the lens rod 1. In this way, the user can directly drive the lens 3 to rotate by manipulating it with his fingers, and the operation is more intuitive and convenient.

[0028] The above solution can be implemented in the following manner: the diameter of the tooth top circle of the driving tooth 5 is larger than the width of the mirror row rod 1 .

[0029] Reference Figure 1 , 3 The above scheme can also be implemented in the following manner: the tooth top circle diameter of the driving tooth 5 is not greater than the width of the mirror row rod 1, and an inwardly recessed tooth-exposing groove 12 is provided on at least one side of the mirror row rod 1, and the driving section 11 is arranged in the tooth-exposing groove 12. In this way, by providing the tooth-exposing groove 12, it is ensured that the driving section 11 is exposed and easy to operate, and the appearance is beautiful and easy to operate.

[0030] Reference Figure 2 , 4 A retaining spring 13 is provided between the lens frame 4 and the accommodating groove 2 , and the lens frame 4 is rotatably installed in the accommodating groove 2 through the retaining spring 13 .

[0031] Reference Figure 1 , an axis positioning point 14 corresponding to the axis position of the lens is provided on the lens frame 4, and a positioning scale ring 15 matching the axis positioning point 14 is provided on the upper surface of the mirror rod 1. The indicating direction of the axis positioning point 14 coincides with the axis position of the lens 3, so that the axis position of the lens can be quickly confirmed through the axis positioning point 14 during use, and the axis position of the lens can be accurately adjusted by cooperating with the positioning scale ring 15.

[0032] Reference Figure 1 The number of the accommodating grooves 2 and the diopter of the lens 3 can be set according to the usage requirements. In this embodiment, there are 4 accommodating grooves 2 with equal distances, and the diopter of the lens 3 is -0.25D, -0.50D, -1.00D, and -1.50D from left to right.

[0033] Working principle: For a retinoscopy lens array with a linkage axis position adjustment of the present utility model, during use, the optometrist first rotates the drive gear 5 provided on the lens array rod 1. By utilizing the meshing effect between the drive gear 5 and the transmission gear 6, synchronous rotation of all the lens frames 4 in which the lenses 3 are embedded is achieved until the axis positions of each lens 3 are precisely adjusted to completely coincide with the individual astigmatism axis position of the patient. Subsequently, the optometrist holds the lens array rod 1 and uses the lenses 3 with different diopters in the multiple accommodation grooves 2 arranged side by side along the length direction of the lens array rod 1 to perform alternate retinoscopy operations. After the retinoscopy work for the current patient is completed, the optometrist rotates the drive gear 5 again to adjust the lens axis position to match the astigmatism axis position of the next patient, thereby seamlessly connecting to the retinoscopy process of the next patient.

[0034] Through the innovative linkage axis position adjustment mechanism, the present utility model realizes rapid and precise adjustment of the lens axis position, provides an efficient and convenient retinoscopy tool for optometrists, and greatly improves the quality and efficiency of retinoscopy work.

[0035] Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A retinoscopy lens array with linkage axis position adjustment, characterized in that: It comprises a mirror rod, on which a plurality of receiving grooves are arranged side by side along the length direction, lenses with astigmatism axes are correspondingly arranged in the receiving grooves, the refractive powers of the lenses in each receiving groove are different, a mirror frame is correspondingly arranged between the lens and the receiving groove, the inner edge of the frame is fixedly connected to the lens, the outer edge of the frame is rotatably connected to the receiving groove, a driving tooth for driving the rotation is fixedly arranged at the lower part of the frame, and a transmission tooth is correspondingly arranged on the mirror rod between adjacent frames, the transmission tooth is used to cooperate with the driving tooth to drive the lenses in each frame to rotate and adjust synchronously.

2. The retinoscopy lens array with linkage axis position adjustment according to claim 1, wherein: A stop ring is fixedly arranged at the lower part of the inner edge of the frame, a pressure ring is threadedly connected at the upper part of the inner edge of the frame, and the lens is fixedly arranged between the stop ring and the pressure ring.

3. The retinoscopy lens array with linkage axial position adjustment according to claim 1, wherein: A transition groove is arranged on the mirror rod between adjacent accommodating grooves, a transmission wheel is rotatably installed in the transition groove, and the transmission teeth are fixedly arranged on the outer edge of the transmission wheel and mesh with the driving teeth of two adjacent mirror frames for transmission.

4. The retinoscopy lens array with linkage axis position adjustment according to claim 1, wherein: A driving section which is convenient for manual manipulation is arranged on at least one driving tooth, and the driving section is arranged outside the mirror rod.

5. The retinoscopy lens array with linkage axis position adjustment according to claim 4, characterized in that: The tooth top circle diameter of the driving teeth is greater than the width of the mirror row rod.

6. The retinoscopy lens array with linkage axis position adjustment according to claim 4, wherein: The tooth top circle diameter of the driving teeth is not greater than the width of the mirror row rod, and an inwardly recessed tooth-exposing groove is provided on at least one side of the mirror row rod, and the driving section is arranged in the tooth-exposing groove.

7. The retinoscopy lens array with linkage axis position adjustment according to claim 1, characterized in that: A clamping spring is arranged between the lens frame and the accommodating groove, and the lens frame is rotatably installed in the accommodating groove through the clamping spring.

8. The retinoscopy lens array with linkage axis position adjustment according to claim 1, characterized in that: An axis positioning point corresponding to the axis position of the lens is arranged on the lens frame, and a positioning scale ring matched with the axis positioning point is arranged on the upper surface of the lens row rod.

9. The retinoscope array with linkage axial position adjustment according to claim 1, wherein: There are 4 accommodating grooves equidistantly arranged, and the diopter of the lens is -0.25D, -0.50D, -1.00D, and -1.50D from left to right.

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