Simulation eye

Abstract

The invention discloses a simulated eye, and relates to the technical field of ophthalmology diagnosis and treatment, the simulated eye comprises a shell, a light source, a zoom lens group and a galvanometer assembly, a simulated pupil is formed at one end of the shell, the light source and the zoom lens group are both slidably mounted in the shell, the galvanometer assembly comprises a galvanometer and a supporting rod, the galvanometer is rotatably mounted on the supporting rod, the galvanometer is arranged outside the shell, and the galvanometer is rotatably mounted on the supporting rod. The pupil is close to the simulated pupil; the light source is used for emitting light and sequentially penetrates through the zoom lens set and the simulated pupil until the light is projected to the galvanometer, and the galvanometer is used for reflecting the light to the diopter topographic mapping instrument for calibration. The light source emits light rays, the light rays irradiate the zoom lens set, the zoom lens set refracts the light rays, then the refracted light rays penetrate through the simulated pupil of the shell till the light rays are projected to the galvanometer of the galvanometer assembly, and the diopter of the simulated eye is adjusted by adjusting the optical interval between the light source and the zoom lens set. When the diopter topographic mapping instrument is calibrated, the simulation eye does not need to be replaced, and the calibration efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of simulated eyes, and in particular to a simulated eye. Background Art

[0002] The wide-area retinal topographer is an advanced ophthalmic diagnostic device that uses optical scanning technology and advanced image processing algorithms to non-invasively obtain detailed topographic information of the fundus. It can measure the refractive power distribution of the retinal surface of the eye, covering a wide retinal area.

[0003] When calibrating a wide-field retinal topographer, a simulated eye is required as a standard reference to ensure measurement accuracy and instrument performance.

[0004] Most existing optical simulated eyes are non-adjustable in diopter and only have diopter adjustment in the central field of view, with no diopter simulation in the peripheral fields. Therefore, when using simulated eyes for calibration or testing, the user must switch to a different diopter to meet the test requirements, which is inefficient.

[0005] Therefore, it is necessary to provide a new simulated eye to solve the above technical problems. Summary of the Invention

[0006] The main purpose of the present invention is to provide a simulated eye, aiming to improve the technical problem of poor efficiency in calibrating a diopter topographer using a simulated eye in the prior art.

[0007] To achieve the above object, the present invention provides a simulated eye, comprising:

[0008] a shell, wherein a simulated pupil is formed at one end of the shell;

[0009] light source;

[0010] A zoom lens assembly, wherein the light source and the zoom lens assembly are both slidably mounted inside the housing;

[0011] A galvanometer assembly includes a galvanometer and a support rod. The galvanometer is rotatably mounted on the support rod. The galvanometer is arranged outside the shell and close to the simulated pupil. The light source is used to emit light, and the light passes through the zoom lens group and the simulated pupil in sequence until it is projected onto the galvanometer. The galvanometer is used to reflect the light to the diopter topographer for calibration.

[0012] In an embodiment, the shell is further formed with a sliding groove parallel to the central axis of the simulated pupil, the simulated eye further comprises a first operating rod and a second operating rod group, the light source is connected with the first operating rod, the first operating rod is slidingly installed in the sliding groove and extends out of the sliding groove, the zoom lens group is connected with the second operating rod group, and the second operating rod group is slidingly installed in the sliding groove and extends out of the sliding groove.

[0013] In an embodiment, the zoom lens group comprises a first lens and at least two second lenses, the first lens and the two second lenses are arranged at intervals, the first lens is fixedly installed in the shell, and the first lens is arranged close to the simulated pupil; the second operating rod group comprises at least two second operating rods, the number of the second lenses is equal to the number of the second operating rods, and the second lenses and the second operating rods are connected one by one in a one-to-one correspondence, and the two second operating rods are slidingly installed in the sliding groove and extend out of the sliding groove.

[0014] In an embodiment, the simulated eye further comprises a diaphragm, the diaphragm is installed inside the shell, and the diaphragm is arranged between the zoom lens group and the simulated pupil, and the diaphragm is used to reduce the light entering the galvanometer.

[0015] In an embodiment, the distance between the two second lenses ranges from 12.15 mm to 200.45 mm.

[0016] In an embodiment, the distance between the second lens close to the first lens and the first lens ranges from 12.15 mm to 200.45 mm.

[0017] In an embodiment, the distance between the side of the first lens close to the galvanometer and the galvanometer ranges from 42 mm to 43 mm.

[0018] In an embodiment, the light source, the first lens, the second lens and the simulated pupil are coaxially arranged.

[0019] In an embodiment, the diameter of the simulated pupil ranges from 4 mm to 6 mm.

[0020] In an embodiment, the light source is a laser fiber head.

[0021] In the above scheme, the simulated eye includes a shell, a light source, a zoom lens group and a galvanometer assembly. A simulated pupil is formed at one end of the shell. The light source and the zoom lens group are both slidably mounted inside the shell. The galvanometer assembly includes a galvanometer and a support rod. The galvanometer is rotatably mounted on the support rod. The galvanometer is arranged outside the shell and close to the simulated pupil. The light source is used to emit light, and the light passes through the zoom lens group and the simulated pupil in sequence until it is projected onto the galvanometer. The galvanometer is used to reflect the light to the diopter topographer for calibration. Specifically, when calibrating, the light source is first turned on, and the light source emits light, which is irradiated to the zoom lens group. The zoom lens group refracts the light, and then the refracted light passes through the simulated pupil of the shell until it is projected onto the galvanometer of the galvanometer assembly. The galvanometer reflects the light to the diopter topographer. Since the light source and the zoom lens group are both slidably mounted inside the shell, moving the light source and the zoom lens group can adjust the distance between the light source and the zoom lens group, so that adjusting the optical distance between the light source and the zoom lens group can achieve the effect of changing the light projected onto the diopter topographer. The diopter of the instrument can be adjusted by a simulated eye, so that multiple diopters can be adjusted. Then, the detection accuracy and repeatability of the diopter topographer can be tested based on the known multiple diopters provided by the simulated eye. The galvanometer is rotatably installed on the support rod, and the galvanometer can be rotated to adjust the field of view angle of the incident light and calibrate multiple fields of view, so that multiple field of view detection can be achieved. In the present invention, the diopter adjustment is achieved by adjusting the optical interval between the light source and the zoom lens group, so that when the diopter topographer is calibrated, there is no need to replace the simulated eye, which greatly improves the calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the simulated eye provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the simulated eye provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the third embodiment of the simulated eye provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 100. Simulated eye; 1. Housing; 2. Light source; 3. Zoom lens group; 4. Galvanometer assembly; 11. Simulated pupil; 41. Galvanometer; 42. Support rod; 12. Slide; 5. First operating lever; 6. Second operating lever group; 31. First lens; 32. Second lens; 61. Second operating lever; 7. Aperture.

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] See also Figure 1The present invention proposes a simulated eye 100, including a shell 1, a light source 2, a zoom lens group 3 and a galvanometer assembly 4. A simulated pupil 11 is formed at one end of the shell 1. The light source 2 and the zoom lens group 3 are both slidably installed inside the shell 1. The galvanometer assembly 4 includes a galvanometer 41 and a support rod 42. The galvanometer 41 is rotatably installed on the support rod 42. The galvanometer 41 is arranged outside the shell 1 and close to the simulated pupil 11; the light source 2 is used to emit light, and passes through the zoom lens group 3 and the simulated pupil 11 in sequence until it is projected onto the galvanometer 41. The galvanometer 41 is used to reflect the light to a diopter topographer for calibration. Specifically, during calibration, the light source 2 is first turned on, and the light source 2 emits light, which is then irradiated onto the zoom lens group 3, which refracts the light. The refracted light then passes through the simulated pupil 11 of the housing 1 until the light is projected onto the galvanometer 41 of the galvanometer assembly 4, which reflects the light onto the diopter topograph. Since the light source 2 and the zoom lens group 3 are both slidably mounted inside the housing 1, the distance between the light source 2 and the zoom lens group 3 can be adjusted by moving the light source 2 and the zoom lens group 3, thereby adjusting the optical spacing between the light source 2 and the zoom lens group 3 to achieve the effect of changing the light projected onto the diopter topograph. The diopter of the topograph can be adjusted by a simulated eye 100 to achieve multiple diopter adjustments, and then the detection accuracy and repeatability of the diopter topograph can be tested based on the known multiple diopters provided by the simulated eye 100; and the galvanometer 41 is rotatably installed on the support rod 42, and the galvanometer 41 can be rotated to adjust the field of view angle of the incident light, and multiple fields of view can be calibrated, so that multiple field of view detection can be achieved; in this embodiment, the diopter adjustment is achieved by adjusting the optical interval between the light source 2 and the zoom lens group 3, so that when the diopter topograph is calibrated, there is no need to replace the simulated eye 100, which greatly improves the calibration efficiency.

[0033] See also Figure 2 and Figure 3In one embodiment, the housing 1 further defines a slot 12 parallel to the central axis of the simulated pupil 11. The simulated eye 100 further includes a first operating lever 5 and a second operating lever assembly 6. The light source 2 is connected to the first operating lever 5, which is slidably mounted in and extends out of the slot 12. The zoom lens assembly 3 is connected to the second operating lever assembly 6, which is slidably mounted in and extends out of the slot 12. By connecting the first operating lever 5 to the light source 2 and sliding along the slot 12, the position of the light source 2 can be flexibly adjusted. The second operating lever assembly 6 is connected to the zoom lens assembly 3 and can precisely control the relative positions of the lenses in the zoom lens assembly 3. By sliding the operating lever, the spacing between the light source 2 and the zoom lens assembly 3, as well as the spacing between the lenses within the zoom lens assembly 3, can be changed, thereby achieving precise diopter adjustment. Simply pushing or pulling the operating lever allows for quick adjustment of the diopter parameter, significantly reducing calibration time. The design of the operating lever extending out of the slot 12 allows the user to manually adjust the position of the light source 2 and the zoom lens assembly 3, making operation simple and intuitive. Slideway 12 provides a stable movement path, ensuring a smooth and controllable adjustment process and avoiding errors caused by improper operation. The cooperation between slideway 12 and the operating lever allows for fine-tuning of the positions of light source 2 and zoom lens assembly 3, thereby precisely controlling the optical separation and ensuring more accurate diopter adjustment. The restrictive effect of slideway 12 reduces potential deviation or shaking during operation, thereby improving the reliability of the test results.

[0034] See also Figures 1 to 3 In one embodiment, the zoom lens group 3 includes a first lens 31 and at least two second lenses 32, the first lens 31 and the two second lenses 32 are arranged at intervals, the first lens 31 is fixedly mounted on the housing 1, and the first lens 31 is arranged close to the simulated pupil 11; the second operating lever group 6 includes at least two second operating levers, the number of the second lenses 32 is equal to the number of the second operating levers, and they are connected one-to-one, the two second operating levers are both slidably mounted on the slide groove 12, and the two second operating levers both extend out of the slide groove 12. The first lens 31 is set and fixedly installed close to the simulated pupil 11 to provide a stable optical reference. The second lens 32 is connected by a second operating rod and slides along the slide groove 12. It can flexibly adjust the distance between it and the first lens 31. By adjusting the position of two or more second lenses 32, complex optical path changes can be achieved, thereby accurately controlling the refraction effect of light to achieve different refractive powers. Each second lens 32 is controlled by an independent operating rod. The user can achieve slight changes in the spacing by pushing or pulling the operating rod to ensure more precise refractive power adjustment. The combined design of the first lens 31 and at least two second lenses 32 enables the simulated eye 100 to cover a wider refractive power range. By adjusting the relative positions of different second lenses 32, a variety of refractive states can be simulated, such as myopia, hyperopia, astigmatism, etc., to meet diverse detection needs.

[0035] See also Figure 3 In one embodiment, the simulated eye 100 further includes an aperture 7, which is mounted within the housing 1 and positioned between the zoom lens assembly 3 and the simulated pupil 11. The aperture 7 is used to reduce the brightness of light incident on the galvanometer 41. The aperture 7 can limit the range of light entering the system, reducing the amount of unnecessary stray light entering the galvanometer 41, thereby reducing the impact on the diopter topographer's detection results. By controlling the opening size of the aperture 7, the light propagation path can be optimized, ensuring that the light projected onto the galvanometer 41 is more focused and clear, thereby improving detection accuracy. The aperture 7 can stabilize the light intensity incident on the galvanometer 41, avoiding variations in light intensity caused by fluctuations in the output of the light source 2 or reflections from optical components, thereby making detection results more reliable. By limiting the light range, the interference of excessive light on the galvanometer 41 and subsequent detection equipment is reduced, ensuring stable operation of the entire optical system. For light sources 2 of varying intensities, the aperture 7 can be adjusted to accommodate varying light intensity requirements, expanding the device's applicability. In different diopter calibration scenarios, the aperture 7 can help optimize lighting conditions and ensure consistent and repeatable detection results.

[0036] In one embodiment, the spacing between the two second lenses 32 ranges from 12.15 mm to 200.45 mm. By setting the spacing between the second lenses 32 to a range of 12.15 mm to 200.45 mm, a wide range of diopter coverage, from low to high diopter, can be achieved. Common refractive errors, such as myopia, hyperopia, and astigmatism, can all be simulated by adjusting the lens spacing, making it suitable for a variety of detection scenarios.

[0037] In one embodiment, the distance between the second lens 32 adjacent to the first lens 31 and the first lens 31 ranges from 12.15 mm to 200.45 mm. By setting the distance between the first lens 31 and the second lens 32 to range from 12.15 mm to 200.45 mm, a wide range of diopter coverage from low to high diopter can be achieved. The first lens 31 and the two second lenses 32 cooperate to provide the simulated eye 100 with a diopter range of -6D to +6D.

[0038] In one embodiment, the distance between the side of the first lens 31 closest to the galvanometer 41 and the galvanometer 41 is 42 mm to 43 mm. Limiting the distance between the first lens 31 and the galvanometer 41 to this range ensures a stable light path from the first lens 31 to the galvanometer 41. This fixed spacing prevents light deviation or focusing issues caused by distance variations, thereby improving the reliability of the detection results. Within the 42 mm to 43 mm distance range, light refracted by the first lens 31 is projected onto the galvanometer 41 at an optimal angle, ensuring the accuracy of the reflected light. The first lens 31 simulates the function of the human cornea, while the galvanometer 41 simulates the function of the retina. Setting the distance between the two to 42 mm and 43 mm more closely resembles the actual optical structure of the human eye. This design enables the simulated eye 100 to more realistically reflect the optical behavior of the human eye, providing a reliable reference for the calibration of the diopter topograph. The optimal effect is achieved when the distance between the side of the first lens 31 closest to the galvanometer 41 and the galvanometer 41 is 42.6 mm.

[0039] In one embodiment, the light source 2, first lens 31, second lens 32, and simulated pupil 11 are coaxially arranged. This coaxial arrangement ensures that light propagates symmetrically along the central axis. This coaxial arrangement avoids optical distortion caused by optical path deviation, allowing light to optimally pass through the optical components and improving the accuracy of detection results.

[0040] In one embodiment, the diameter of the simulated pupil 11 is 4 mm to 6 mm. The pupil diameter of an adult is generally between 2 mm and 8 mm, and is affected by factors such as light intensity and age. Setting the diameter of the simulated pupil 11 to 4 mm to 6 mm can well cover the middle range of the human pupil under normal circumstances. This design enables the simulated eye 100 to more realistically reflect the optical behavior of the human eye, thereby providing a reliable calibration basis for the diopter topographer. The reasonable range of the diameter of the simulated pupil 11 ensures that the amount of light entering the system is moderate, avoiding light scattering or insufficient problems caused by an overly large or overly small pupil. An appropriate pupil diameter can reduce edge effects and diffraction phenomena during light propagation, thereby improving the accuracy of the detection results. When the diameter of the simulated pupil 11 is 5 mm, the calibration effect of the simulated eye 100 is best.

[0041] In one embodiment, light source 2 is a laser fiber head. The laser fiber head can provide a high-intensity light beam, ensuring sufficient light energy is projected onto the optical surface, meeting the detection requirements of the diopter topographer. The output beam of the laser fiber head is highly stable, which can reduce detection errors caused by fluctuations in light source 2 and improve the reliability of detection results. The light emitted by the laser fiber head has good monochromaticity and coherence, which can better meet the requirements for beam characteristics in optical detection. The laser beam is easy to focus and can form a clear and stable light spot after passing through the zoom lens group 3, thereby improving detection accuracy.

[0042] The above are merely exemplary embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields within the technical concept of the present invention are included in the scope of protection of the present invention.

Claims

1. A simulated eye, characterized in that: include: a shell, wherein a simulated pupil is formed at one end of the shell; light source; A zoom lens assembly, wherein the light source and the zoom lens assembly are both slidably mounted inside the housing; A galvanometer assembly includes a galvanometer and a support rod. The galvanometer is rotatably mounted on the support rod. The galvanometer is arranged outside the shell and close to the simulated pupil. The light source is used to emit light, and the light passes through the zoom lens group and the simulated pupil in sequence until it is projected onto the galvanometer. The galvanometer is used to reflect the light to the diopter topographer for calibration.

2. The artificial eye according to claim 1, wherein The shell is also formed with a slide groove parallel to the central axis of the simulated pupil. The simulated eye also includes a first operating rod and a second operating rod group. The light source is connected to the first operating rod, and the first operating rod is slidably installed in the slide groove and extends out of the slide groove. The zoom lens group is connected to the second operating rod group, and the second operating rod group is slidably installed in the slide groove and extends out of the slide groove.

3. The simulated eye according to claim 2, wherein: The zoom lens group includes a first lens and at least two second lenses, the first lens and the two second lenses are arranged at intervals, the first lens is fixedly mounted on the housing, and the first lens is arranged close to the simulated pupil; the second operating rod group includes at least two second operating rods, the number of the second lenses is equal to the number of the second operating rods, and they are connected one-to-one, the two second operating rods are both slidably mounted on the sliding groove, and the two second operating rods both extend out of the sliding groove.

4. The artificial eye according to any one of claims 1 to 3, wherein: The simulated eye further includes an aperture, which is installed inside the housing and disposed between the zoom lens group and the simulated pupil. The aperture is used to reduce the amount of light incident on the galvanometer.

5. The simulated eye according to claim 3, wherein: The distance between the two second lenses ranges from 12.15 mm to 200.45 mm.

6. The simulated eye according to claim 3, wherein: The distance between the second lens close to the first lens and the first lens ranges from 12.15 mm to 200.45 mm.

7. The simulated eye according to claim 3, wherein: The distance between the side of the first lens close to the galvanometer mirror and the galvanometer mirror is 42 mm to 43 mm.

8. The simulated eye according to claim 3, wherein: The light source, the first lens, the second lens and the simulated pupil are coaxially arranged.

9. The simulated eye according to any one of claims 1 to 3, wherein: The diameter of the simulated pupil is 4 mm to 6 mm.

10. The artificial eye according to any one of claims 1 to 3, characterized in that The light source is a laser fiber head.

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