An apparatus for measuring large field of view imaging of an artificial eye

Abstract

The present invention provides a device for measuring large-field imaging of an artificial eye. A medium tank is provided at the upper end of the posterior chamber of the artificial eye. A light-transmitting hole is provided on the side wall of the posterior chamber of the artificial eye, and an artificial cornea and an artificial lens are respectively and hermetically installed in the light-transmitting hole. The medium tank is filled with a liquid medium. The input end of the artificial retina detector is located in the liquid medium, and the periphery of the artificial retina detector is fixedly installed at one end of a support rod. The other end of the support rod is installed on a displacement platform, and the displacement platform can drive the artificial retina detector to displace through the support rod. The lower end of the displacement platform is fixedly installed on the upper end of a substrate, and a support and a light source are respectively arranged at the lower end of the substrate. The device for measuring large-field imaging of an artificial eye according to the present invention can achieve the detection of large-field imaging of the artificial eye. The detector of the artificial retina is waterproofed, so it can be placed in the waterproof liquid of the artificial human eye, thereby approaching the actual imaging of the human eye to the greatest extent.

Description

Technical Field

[0001] The invention belongs to the field of optical detection, and in particular relates to a device for measuring and simulating large-field imaging of an eye. Background Art

[0002] Simulated eyes have always been an important research tool in ophthalmology clinics and can be used to evaluate the imaging characteristics of human eyes in various situations. Simulated eyes can be mainly divided into two categories: one is a digital simulated eye, which is mainly used for theoretical analysis and modeling; the other is a physical simulated eye, which is mainly used for measurement and instrument calibration. The simulated eye in this patent refers specifically to a physical simulated eye. Optical coherence tomography (OCT) often requires the help of a physical simulated eye. The simulated eye in the prior art can be used to evaluate the three-dimensional imaging performance of ophthalmic OCT equipment. The simulated eye used for this purpose uses the cornea and lens in the simulated eye to photograph the retinal morphology of the simulated eye. It is not used to evaluate the imaging characteristics of the retina after the light passes through the simulated eye. In addition, simulated eyes are also used in ophthalmic training, and the eye models in the prior art cannot reflect the imaging characteristics of the human eye or focus on the imaging on the axis of the human eye, and are then used to photograph the retinal image of the human eye, or are used for ophthalmic surgery simulation training. However, there is currently no method for evaluating the peripheral imaging of simulated eyes. This is because, for a long time, people have mainly focused on the on-axis imaging of the human eye, and paid little attention to the off-axis imaging. However, in the past 10 years, studies have shown that the peripheral imaging of the human eye can control the progression of myopia, so the off-axis imaging of the human eye has attracted widespread attention. Therefore, it is necessary to fully understand the peripheral field imaging of the human eye. Summary of the invention

[0003] In view of this, the present invention aims to provide a device for measuring and simulating large field of view imaging of an eye, so as to solve the problem that the prior art cannot fully understand the peripheral field of view imaging of the human eye.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] An apparatus for measuring large field-of-view imaging of an artificial eye, comprising an artificial eye posterior chamber, an artificial retina detector, a support rod, a displacement platform, a substrate and a light source. A medium groove is provided at the upper end of the artificial eye posterior chamber, and a light passing hole is provided on the side wall of the artificial eye posterior chamber. An artificial cornea and an artificial lens are respectively and hermetically installed in the light passing hole. A liquid medium is filled in the medium groove. The input end of the artificial retina detector is located in the liquid medium, and the periphery of the artificial retina detector is fixedly installed at one end of the support rod. The other end of the support rod is installed on the displacement platform. The displacement platform can drive the artificial retina detector to displace through the support rod. The lower end of the displacement platform is fixedly installed on the upper end of the substrate, and a support and a light source are respectively provided at the lower end of the substrate. The incident light of the light source sequentially passes through the artificial cornea, the artificial lens and the liquid medium and irradiates to the input end of the artificial retina detector. The artificial retina detector is signal-connected to a host computer.

[0006] Further, a bottom rotating table is provided at the lower end of the artificial eye posterior chamber. The artificial retina detector and the light source are arranged opposite to each other. The bottom rotating table drives the artificial cornea and the artificial lens through the artificial eye posterior chamber to realize angular deflection relative to the artificial retina detector.

[0007] Further, the bottom rotating table is a 360-degree electric rotating displacement table.

[0008] Further, the support is a support with adjustable height. The support with adjustable height adjusts the depth of the artificial retina detector extending into the artificial eye posterior chamber through the displacement platform and the support rod in sequence.

[0009] Further, the displacement platform includes a translation component and a rotating component provided at its upper end. The middle of the rotating component is fixedly sleeved with one end of the support rod. The lower end of the translation component is fixedly connected to the upper end of the substrate, and the rotating component is used to drive the artificial retina detector to rotate relative to the artificial eye posterior chamber through the support rod, and the translation component is used to drive the artificial retina detector to linearly displace relative to the artificial eye posterior chamber.

[0010] Further, the translation component includes a base, a sliding plate, a support plate and a first adjusting bolt. The lower end of the base is fixedly connected to the upper end of the substrate. The upper end of the base is fixedly installed with the support plate, and a chute is provided at the upper end of the base. The lower end of the sliding plate is slidably connected to the chute. A threaded through hole is provided on the support plate. The periphery of the first adjusting bolt is threadedly connected to the threaded through hole, and one end of the first adjusting bolt is rotatably sleeved on one side of the sliding plate.

[0011] Further, a rotating disc is rotatably sleeved at the upper end of the sliding plate, and the middle of the upper end of the rotating disc is fixedly sleeved with one end of the support rod. Sawteeth are evenly distributed on the periphery of the rotating disc. A support hole is provided on one side of the support plate. The periphery of an adjusting rod is rotatably sleeved in the support hole. Threads are evenly distributed on the periphery of the adjusting rod. The periphery of the rotating disc meshes with the threads.

[0012] Further, the analog retina detector is any one of a CCD, a CMOS, and an imaging detection element.

[0013] Further, the housing of the analog retina detector is subjected to a waterproof sealing treatment, and its waterproof performance meets IP68.

[0014] Further, one end of the support rod is equipped with a dry plate clamp, and a U-shaped groove is provided at the lower end of the dry plate clamp. The periphery of the analog retina detector is fixedly connected to the U-shaped groove through a fixing bolt.

[0015] Compared with the prior art, the device for measuring the large field of view imaging of an artificial eye according to the present invention has the following beneficial effects:

[0016] (1) The device for measuring the large field of view imaging of an artificial eye according to the present invention can detect the large field of view imaging of the artificial eye. The detector of the analog retina is waterproofed, so it can be placed in a liquid that waterproofs the artificial eye, thus approaching the actual imaging of the human eye to the greatest extent.

[0017] (2) The device for measuring the large field of view imaging of an artificial eye according to the present invention can obtain the radial movement distance of the detector of the analog retina through the displacement platform and the rotation platform. By adding frame glasses, contact lenses in front of the artificial cornea and the artificial lens, or adding ICL and IOL in the artificial eye, the large field of view retina image of such an eye-lens system can be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a schematic structural diagram of a device for measuring the large field of view imaging of an artificial eye according to an embodiment of the present invention;

[0020] Figure 2 is a side view schematic diagram of a device for measuring the large field of view imaging of an artificial eye according to an embodiment of the present invention;

[0021] Figure 3 is a side view schematic diagram of a device for measuring the large field of view imaging of an artificial eye according to an embodiment of the present invention.

[0022] Description of the reference numerals:

[0023] 1 - Posterior chamber of the artificial eye; 2 - Analog retina detector; 3 - Support rod; 4 - Displacement platform; 41 - Translation component; 42 - Rotation component; 5 - Substrate; 6 - Artificial cornea and artificial lens; 7 - Bracket; 8 - Bottom rotating table. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0027] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0028] Such as Figures 1-3As shown in the figure, a device for measuring large field of view imaging of an artificial eye includes an artificial eye posterior chamber 1, an artificial retina detector 2, a support rod 3, a displacement platform 4, a substrate 5 and a light source. A medium groove is provided at the upper end of the artificial eye posterior chamber 1, and a light passing hole is provided on the side wall of the artificial eye posterior chamber 1. An artificial cornea and an artificial lens 6 are respectively and hermetically installed in the light passing hole. The medium groove is filled with a liquid medium. The input end of the artificial retina detector 2 is located in the liquid medium, and the periphery of the artificial retina detector 2 is fixedly installed at one end of the support rod 3. The other end of the support rod 3 is installed on the displacement platform 4. The displacement platform 4 can drive the artificial retina detector 2 to displace through the support rod 3. The lower end of the displacement platform 4 is fixedly installed on the upper end of the substrate 5, and a support 7 and a light source are respectively provided at the lower end of the substrate 5. The incident light of the light source sequentially passes through the artificial cornea, the artificial lens and the liquid medium and irradiates the input end of the artificial retina detector 2. The artificial retina detector 2 is signal-connected to a host computer. A bottom rotating table 8 is provided at the lower end of the artificial eye posterior chamber 1. The artificial retina detector 2 and the light source are arranged opposite to each other. The bottom rotating table 8 drives the artificial cornea and the artificial lens 6 through the artificial eye posterior chamber 1 to realize angular deflection relative to the artificial retina detector 2. By rotating the rotating table that supports the artificial eye posterior chamber 1, the angle of the incident light is controlled, and the incident light enters from the cornea, passes through the lens and then enters the posterior chamber of the artificial eye and irradiates the input end of the artificial retina detector 2. By controlling the displacement platform 4 connected to the support rod 3 of the artificial retina, the two-dimensional movement of the input end of the artificial retina detector 2 can be controlled, and thus the retina imaging under different fields of view can be detected. An adjustable-height floor support 7 is installed under the substrate 5 to control the height of the displacement platform 4, and thus the height of the artificial retina detector 2 can be simulated to adapt to different working conditions. When the artificial retina detector 2 is connected to a computer through a signal line, the image captured by the detector can be displayed in real time.

[0029] During implementation, the artificial eye needs to be placed on the bottom rotating table 8. By rotating the rotating table, the field of view angle of the light entering the eye is controlled. The artificial retina detector 2 can be any one of a CCD, a CMOS and an imaging detection element. In this embodiment, the existing technology CCD is selected. In order to ensure the reliability when the input end of the CCD is immersed in the liquid medium, waterproof sealing treatment needs to be carried out on the periphery of the CCD, and the waterproof sealing treatment can be realized by dispensing or installing a glass sealing dish, as long as the waterproof performance of IP68 can be satisfied.

[0030] The device can measure any combination of simulated eyes, including simulated eyes wearing various types of frame glasses, simulated eyes wearing contact lenses, simulated eyes implanted with ICL (Implantable Collamer Lens), and simulated eyes implanted with IOL (Intraocular lens). It can also image a monochromatic light or white light measurement system, and the image formed on the simulated retina detector 2 can be the image formed by parallel light passing through the simulated eye, or the image formed by the simulated eye when the target is at a finite distance, or it can be a military standard or other targets that can be imaged by the human eye.

[0031] Meanwhile, to meet the requirements of the above different working conditions, the displacement platform 4 includes a translation component 41 and a rotation component 42 provided at its upper end. One end of the support rod 3 is fixedly sleeved in the middle of the rotation component 42. The lower end of the translation component 41 is fixedly connected to the upper end of the substrate 5. The rotation component 42 is used to drive the simulated retina detector 2 to rotate relative to the posterior chamber 1 of the simulated eye through the support rod 3, and the translation component 41 is used to drive the simulated retina detector 2 to linearly displace relative to the posterior chamber 1 of the simulated eye through the support rod 3. The translation component 41 includes a base, a slide plate, a support plate, and a first adjusting bolt. The lower end of the base is fixedly connected to the upper end of the substrate 5. The support plate is fixedly installed on the upper end of the base, and a chute is provided at the upper end of the base. The lower end of the slide plate is slidably connected to the chute. A threaded through hole is provided on the support plate. The outer periphery of the first adjusting bolt is threadedly connected to the threaded through hole, and one end of the first adjusting bolt is rotatably sleeved on one side of the slide plate. In implementation, the bottom rotating table 8 can select the manual mechanism of the above rotation component 42, or it can select a 360-degree electric rotating displacement table in the prior art, as long as it meets the deflection angle requirement and the accuracy requirement of 1°. The simulated retina detector 2 is connected to the support rod 3 and fixed on the rotatable component 42. Through the rotation operation of the rotation component 42, the simulated retina detector 2 can be moved to different field angles of the simulated human eye. Through the translation operation of the translation component 41, the radial position of the simulated retina detector 2 can be adjusted to make the image formed on the detector the clearest. By adjusting the adjustable floor bracket 7, the vertical position of the simulated retina detector 2 can be changed to adjust the depth of the detector immersed in water.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for measuring large field of view imaging of an artificial eye, characterized in that: It includes an artificial posterior chamber of the eye (1), an artificial retina detector (2), a support rod (3), a displacement platform (4), a substrate (5) and a light source. The upper end of the artificial posterior chamber of the eye (1) is provided with a medium groove. The side wall of the artificial posterior chamber of the eye (1) is provided with a light passing hole, and an artificial cornea and an artificial lens (6) are respectively and hermetically installed in the light passing hole. The medium groove is filled with a liquid medium. The input end of the artificial retina detector (2) is located in the liquid medium, and the periphery of the artificial retina detector (2) is fixedly installed at one end of the support rod (3). The other end of the support rod (3) is installed on the displacement platform (4). The displacement platform (4) can drive the artificial retina detector (2) to displace through the support rod (3). The lower end of the displacement platform (4) is fixedly installed on the upper end of the substrate (5), and a support (7) and a light source are respectively arranged at the lower end of the substrate (5). The incident light of the light source irradiates the input end of the artificial retina detector (2) successively through the artificial cornea, the artificial lens and the liquid medium. The artificial retina detector (2) is signal-connected to a host computer; A bottom rotating table (8) is arranged at the lower end of the artificial posterior chamber of the eye (1). The artificial retina detector (2) and the light source are arranged opposite to each other. The bottom rotating table (8) drives the artificial cornea and the artificial lens (6) to realize angular deflection relative to the artificial retina detector (2) through the artificial posterior chamber of the eye (1); The displacement platform (4) includes a translation component (41) and a rotating component (42) arranged at its upper end. The middle of the rotating component (42) is fixedly sleeved with one end of the support rod (3). The lower end of the translation component (41) is fixedly connected to the upper end of the substrate (5), and the rotating component (42) is used to drive the artificial retina detector (2) to rotate relative to the artificial posterior chamber of the eye (1) through the support rod (3). The translation component (41) is used to drive the artificial retina detector (2) to linearly displace relative to the artificial posterior chamber of the eye (1) through the support rod (3); The artificial retina detector (2) is any one of a CCD, a CMOS and an imaging detection element.

2. The device for measuring large field of view imaging of an artificial eye according to claim 1, wherein: The bottom rotating table (8) is a 360-degree electric rotating displacement table.

3. The device for measuring the large field of view imaging of an artificial eye according to claim 1, characterized in that: The support (7) is an adjustable-height support (7). The adjustable-height support (7) adjusts the depth of the artificial retina detector (2) extending into the artificial posterior chamber of the eye (1) through the displacement platform (4) and the support rod (3) in sequence.

4. The device for measuring large field of view imaging of an artificial eye according to claim 1, wherein: The translation component (41) includes a base, a sliding plate, a support plate and a first adjusting bolt. The lower end of the base is fixedly connected to the upper end of the substrate (5). The upper end of the base is fixedly installed with the support plate, and a chute is arranged at the upper end of the base. The lower end of the sliding plate is slidably connected to the chute. A threaded through hole is arranged on the support plate. The periphery of the first adjusting bolt is threadedly connected to the threaded through hole, and one end of the first adjusting bolt is rotatably sleeved on one side of the sliding plate.

5. The device for measuring large field of view imaging of an artificial eye according to claim 4, characterized in that: The upper end of the sliding plate is rotatably sleeved with a rotating disc, and the middle of the upper end of the rotating disc is fixedly sleeved with one end of the support rod (3). Sawteeth are evenly distributed on the periphery of the rotating disc. A support hole is arranged on one side of the support plate. The periphery of the adjusting rod is rotatably sleeved in the support hole. Threads are evenly distributed on the periphery of the adjusting rod. The periphery of the rotating disc meshes with the threads.

6. The device for measuring large field of view imaging of an artificial eye according to claim 1, wherein: The shell of the artificial retina detector (2) is subjected to waterproof sealing treatment, and its waterproof performance meets IP68.

7. A device for measuring the large field of view imaging of an artificial eye according to claim 1, characterized in that: One end of the support rod (3) is equipped with a dry plate clip, and a U-shaped groove is provided at the lower end of the dry plate clip. The periphery of the simulated retina detector (2) is fixedly connected to the U-shaped groove through a fixing bolt.

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