Digital photographing system for direct ophthalmoscope

Abstract

The utility model belongs to the technical field of medical detection, and particularly discloses a direct ophthalmoscope digital photographing system which comprises a laser assembly, a condensation assembly and an eyepiece. An observation area is arranged at the intersection of the laser assembly and the condensation assembly, the eyepiece concentrates an image to be collected in the observation area through the second parallel lens and the condensation assembly, and the auxiliary optical conversion assembly and the photographing assembly capture a fundus optical image of the fundus; recording the fundus optical image acquired on the eyepiece based on the optical conversion assembly to form a first image file; collecting the fundus optical image according to a preset frequency based on the photographing assembly to form a second image file, and sending the second image file to the computer terminal through the communication assembly; according to the utility model, the traditional optical direct ophthalmoscope is digitally modified, and the digital camera and the optical conversion system are combined, so that high-definition recording and lesion analysis are realized, pupil expansion is not needed, and carrying and operation are convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical testing technology, specifically a direct ophthalmoscope digital imaging system. Background Technology

[0002] Many retinal, choroidal, and optic nerve diseases require detailed documentation after in vivo fundus examination. Previously, this relied primarily on the examining physician's memory to create written descriptions and simple diagrams. Now, fundus photography offers a more comprehensive and accurate record of subtle pathological changes, facilitating comparisons at different stages, diagnostic prognosis, and quantitative analysis—a unique advantage. The combination of concise written records and photographic techniques is currently the most ideal method for documenting fundus diseases.

[0003] However, the basic design principle of fundus cameras currently used in clinical practice is similar to that of indirect fundus cameras, which often have many limitations: generally, fundus cameras require pupil dilation before fundus photography can be taken, and patients have to wait 20 minutes for pupil dilation, which may induce a major attack in patients with a tendency for angle-closure glaucoma; non-mydriatic fundus cameras often cannot obtain clear fundus images for elderly patients with lens and / or vitreous opacities or small pupil diameters, and still require pupil dilation before photography.

[0004] In addition, a common problem with currently available fundus cameras is insufficient pixel count, which means that certain important lesions, such as macular lamellar holes with a diameter of less than 0.35 mm, small or mild cotton wool spots, and minor intraretinal hemorrhages, cannot be shown on the images.

[0005] In view of this, the present invention proposes a direct ophthalmoscope digital imaging system. Utility Model Content

[0006] The purpose of this invention is to provide a direct ophthalmoscope digital imaging system, which combines a direct ophthalmoscope with a digital camera and an optical conversion system to achieve high-definition recording without the need for pupil dilation, and is convenient to carry and operate.

[0007] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a direct ophthalmoscopy digital imaging system, including a laser component, a condenser component, and an eyepiece; an observation area is provided at the intersection of the laser component and the condenser component.

[0008] The eyepiece focuses the image to be acquired into the observation area through a second parallel lens and a condenser assembly, assisting the optical conversion assembly and the photographic assembly in capturing optical images of the fundus;

[0009] The optical conversion component records the fundus optical images captured on the eyepiece to form a first image file; the photographic component captures fundus optical images at a preset frequency to form a second image file, and the second image file is sent to a computer terminal through the communication component.

[0010] As a preferred technical solution of this utility model, the laser component includes a laser for locating a specific area of ​​the fundus. The light source emitted by the laser emits parallel light after being processed by a refracting mirror and a first parallel lens, and is directly focused and located on the patient's eye through the observation area.

[0011] As a preferred technical solution of this utility model, the light-concentrating component includes a reflector, and a light-collecting plate and a light-filter are sequentially arranged near the observation area of ​​the reflector.

[0012] As a preferred technical solution of this utility model, the laser component and the focusing component are vertically integrated and mounted on the direct ophthalmoscopy.

[0013] As a preferred technical solution of this utility model, a slow-release gap is formed between the observation area and the eye.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention digitizes a traditional optical direct ophthalmoscope, combining a digital camera and an optical conversion system to achieve high-definition recording and analysis of lesions without the need for pupil dilation, making it convenient to carry and operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a direct ophthalmoscope digital imaging system according to this utility model;

[0017] In the diagram: 1. Eye; 2. Laser assembly; 21. Laser; 22. Refracting mirror; 23. First parallel lens; 3. Observation area; 4. Focusing assembly; 41. Reflecting mirror; 42. Light collecting plate; 43. Filter; 5. Second parallel lens; 6. Eyepiece; 7. Image sensor; 8. Photographic assembly; 9. Computer terminal. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example 1

[0022] like Figure 1 As shown, this embodiment provides a direct ophthalmoscopy digital imaging system, including a laser assembly 2, a condenser assembly 4, and an eyepiece 6; an observation area 3 is provided at the intersection of the laser assembly 2 and the condenser assembly 4.

[0023] The laser component 2 includes a laser 21 for locating a specific area of ​​the fundus. The light source emitted by the laser 21 is processed by a refracting mirror 22 and a first parallel lens 23 to emit parallel light, which is directly focused and located on the patient's eye 1 through the observation area 3. When the patient moves in the specific area of ​​the fundus, the parallel light provides a stable light source and assists the eyepiece 6 in capturing the optical image of the fundus, making the optical image of the fundus clearer.

[0024] The focusing assembly 4 includes a reflector 41, and a light-collecting plate 42 and a filter 43 are sequentially arranged near the observation area 3; the eyepiece 6 focuses the image to be acquired into the observation area 3 through the second parallel lens 5 and the focusing assembly 4.

[0025] The operator does not need to make manual adjustments. The eyepiece 6 is refracted by the second parallel lens 5 and the reflecting mirror, and then reaches the patient's eye 1 through the focusing assembly 4.

[0026] Specifically, the laser component 2 and the focusing component 4 are vertically integrated and mounted on the direct ophthalmoscopy. The vertical mounting method makes it easier to set the angle between the lenses and reduces unnecessary light interference to a certain extent, thereby obtaining clearer optical images of the patient's fundus.

[0027] A slow-release gap is formed between observation area 3 and eye 1, allowing the eye an adaptation process.

[0028] Currently, doctors use direct ophthalmoscopes to examine patients. The ophthalmoscope emits a very fine beam of light into the eye, providing a higher magnification than indirect ophthalmoscopes. By adjusting the dial to +10D and placing it at a distance from the eyeball, the cornea, iris, and lens can be observed. The dial is then slowly moved from +10D to 0 and then to -10D, allowing the doctor to see the retina where the beam reaches, resulting in an upright fundus image. In this embodiment, an optical conversion component 7 and a photographic component 8 are added to the direct ophthalmoscope. The optical conversion component 7 records the fundus optical image captured by the eyepiece 6 to form a first image file. The photographic component 8 captures fundus optical images at a preset frequency to form a second image file. This high-resolution fundus camera, which records subtle lesions without requiring pupil dilation and is easy to carry and operate, has significant practical value. The second image file is then sent to a computer terminal 9 via a communication component.

[0029] Specifically, the digitization of ophthalmic examination equipment is becoming a current trend in ophthalmology. Upgrading and digitizing the optical direct ophthalmoscopes commonly used in my country will enable the observed fundus images to be recorded by a high-definition photographic component 8 and displayed on a computer terminal 9 or printed as photographs. This will record the details of the lesions, facilitating follow-up and evaluation of treatment effects, and laying the foundation for future digital analysis and diagnosis of retinal, choroidal, and optic nerve diseases.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A direct ophthalmoscopy digital imaging system, characterized in that: It includes a laser assembly (2), a focusing assembly (4), and an eyepiece (6); an observation area (3) is provided at the intersection of the laser assembly (2) and the focusing assembly (4). The eyepiece (6) focuses the image to be acquired into the observation area (3) through the second parallel lens (5) and the condenser assembly (4), and assists the optical conversion assembly (7) and the photographic assembly (8) to capture the optical image of the fundus; The optical conversion component (7) records the fundus optical image acquired on the eyepiece (6) to form a first image file; the photographic component (8) acquires the fundus optical image at a preset frequency to form a second image file, and sends the second image file to the computer terminal (9) through the communication component.

2. The direct ophthalmoscopy digital imaging system according to claim 1, characterized in that: The laser assembly (2) includes a laser (21) for locating a specific area of ​​the fundus. The laser (21) emits a light source that is processed by a refracting mirror (22) and a first parallel lens (23) to emit parallel light, which is directly focused on the patient's eye (1) through the observation area (3).

3. The direct ophthalmoscopy digital imaging system according to claim 1, characterized in that: The light-concentrating component (4) includes a reflector (41), and a light-collecting plate (42) and a filter (43) are sequentially arranged near the observation area (3) of the reflector (41).

4. The direct ophthalmoscopy digital imaging system according to claim 1, characterized in that: The laser assembly (2) and the focusing assembly (4) are integrated and mounted on the direct ophthalmoscopy via a vertical setting.

5. The direct ophthalmoscopy digital imaging system according to claim 1, characterized in that: A slow-release gap is formed between the observation area (3) and the eye (1).

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