CN111227786A

CN111227786A - Fundus camera

Info

Publication number: CN111227786A
Application number: CN202010183577.6A
Authority: CN
Inventors: 陈善球; 程波涛; 李磊; 管鹏程; 王梦雅; 李利磊; 李超宏
Original assignee: Suzhou Microclear Medical Instruments Co ltd
Current assignee: Suzhou Microclear Medical Instruments Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-06-05

Abstract

The invention provides a fundus camera, which comprises a lens component used for converging imaging light reflected by a fundus, a vision fixing component used for guiding and fixing the sight direction of a detected person, and an imaging component used for generating a fundus image according to the imaging light converged by the lens component; the vision fixation assembly comprises a left vision fixation lamp and a right vision fixation lamp; the left fixation lamp is arranged in such a way that when the left fixation lamp is observed by the left eye of the detected person, the left eye optic disk is positioned at the position of a 10-20-degree visual field on the left side of the macula lutea; the right fixation lamp is set to be positioned at a field of view position of 10-20 degrees on the right side of the macula lutea when the right fixation lamp is observed by the right eye of the detected person. Compared with the prior art, the fundus camera can easily shoot the fundus image with the macula lutea positioned in the center of the image, so that the working difficulty of a doctor is reduced.

Description

Fundus camera

Technical Field

The present invention relates to an eye fundus camera.

Background

An eyeground camera belongs to the field of medical imaging and is used for acquiring an image of retina of a human eye so as to facilitate medical staff to check eyeground diseases or assist the medical staff to judge the state of illness of other organs. Since the blood vessels of the fundus are the only blood vessels that can be directly observed by the human body through the body surface, medical personnel can check whether the optic nerve, retina, choroid and refraction medium of the fundus have pathological changes through the fundus camera, and can also assist in diagnosing and judging the disease conditions of other system diseases through the fundus camera, for example, screening retinal pictures to detect cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, brain tumors, diabetes, nephropathy, hypertension, retinopathy of prematurity, glaucoma, age-related macular degeneration and the like. Since the earlier detection of these diseases is more advantageous for clinical treatment, fundus cameras are widely used for clinical screening of fundus diseases, and are indispensable medical instruments.

However, it is difficult for the existing fundus camera to capture a fundus image with the macula lutea located at the center of the image, and the physician needs to try several times to capture the corresponding fundus image, thus increasing the difficulty of the physician.

In view of the above, it is necessary to provide a fundus camera to solve the above problems.

Disclosure of Invention

An object of the present invention is to provide a fundus camera capable of easily taking a fundus image with the macula lutea at the center of the image, thereby reducing the difficulty of the doctor's work.

In order to achieve the above object, the present invention provides a fundus camera including a lens assembly to condense imaging light reflected from a fundus, a fixation assembly to guide a direction of a sight line of a person to be examined to be fixed, and an imaging assembly to generate a fundus image from the imaging light condensed by the lens assembly; the vision fixation assembly comprises a left vision fixation lamp and a right vision fixation lamp; the left fixation lamp is arranged in such a way that when the left fixation lamp is observed by the left eye of the detected person, the left eye optic disk is positioned at the position of a 10-20-degree visual field on the left side of the macula lutea; the right fixation lamp is set to be positioned at a field of view position of 10-20 degrees on the right side of the macula lutea when the right fixation lamp is observed by the right eye of the detected person.

As a further improvement of the present invention, the left fixation lamp is arranged such that when the left eye of the subject observes the left fixation lamp, the left eye optic disc is located at a 15 ° field of view position to the left of the macula lutea; the right fixation lamp is set such that the right eye disk is located at a 15 DEG field of view position on the right side of the macula lutea when the right fixation lamp is viewed by the right eye of the subject.

As a further improvement of the present invention, the fundus camera is further provided with a detection component that detects the position of the optic disk; when the left fixation lamp or the right fixation lamp is lighted, the detection component works.

As a further improvement of the invention, the fundus camera is further provided with a prompt component; when the detection component detects that the optic disc is located in the preset area, the prompt component gives a first prompt.

As a further improvement of the invention, the fundus camera is further provided with a prompt component; and when the detection component detects that the video disc is located outside the preset area, the prompt component gives a second prompt.

As a further improvement of the invention, the fundus camera is further provided with a prompt component; and when the detection component detects that the optic disc is partially overlapped with the preset area, the prompt component gives a third prompt.

As a further improvement of the invention, the prompting component is a loudspeaker.

As a further improvement of the present invention, the fundus camera is further provided with a display screen; the prompt component is an image-text displayed on the display screen.

As a further improvement of the present invention, the fundus camera is further provided with an autofocus assembly; and when the detection component detects that the optic disc is positioned in a preset area, the automatic focusing component works.

As a further improvement of the invention, the fundus camera is also provided with an infrared illuminating lamp and an image definition recognition component; the infrared illumination lamp is used for illuminating the fundus so that the imaging assembly can generate an infrared image; when the image definition recognition component recognizes that the definition value of the infrared image is higher than a preset threshold value, the eye fundus camera automatically takes a picture.

The invention has the beneficial effects that: the fundus camera can easily shoot fundus images with the macula lutea located in the center of the images, so that the working difficulty of doctors is reduced.

Drawings

Fig. 1 is a schematic configuration diagram of a fundus camera of the present invention.

Fig. 2 is a schematic structural view of the fixation assembly.

Fig. 3 is a schematic view when the optic disc is partially overlapped with the preset area.

Fig. 4 is a schematic view of the disc in a predetermined area.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the present invention discloses a fundus camera 100, which includes a lens assembly 10 for collecting imaging light reflected from a fundus, a fixation assembly 20 for guiding and fixing a visual line direction of a person to be examined, an imaging assembly 30 for generating a fundus image according to the imaging light collected by the lens assembly 10, a detection assembly (not shown) for detecting a position of a optic disc, a prompt assembly (not shown), and a control assembly (not shown).

Referring to fig. 2, the vision fixing assembly 20 includes a first vision fixing assembly 21 and a second vision fixing assembly 22. The first vision fixation assembly 21 comprises 6 vision fixation lamps 211, the 6 vision fixation lamps 211 jointly enclose to form a circle, and the second vision fixation assembly 22 is located in the circle. The second fixation assembly 22 includes a left fixation lamp 221 and a right fixation lamp 222. The left fixation lamp 221 is set such that when the left eye of the subject observes the left fixation lamp 221, the left eye disk in the fundus image acquired by the imaging assembly 30 is located at the field of view position of 10 ° to 20 ° on the left side of the macula lutea; the right eye fixation lamp 222 is set such that when the detected right eye observes the right fixation lamp 222, the right eye disk in the fundus image acquired by the imaging unit 30 is located at the field of view position of 10 ° to 20 ° on the right side of the macula lutea. By the arrangement, the macula lutea in the fundus image obtained by the imaging assembly 30 can be located in the central area of the image, so that the success rate of photographing the fundus image with the macula lutea located in the center of the image by a doctor is effectively improved, and the working difficulty of the doctor is further reduced. Preferably, the left fixation lamp 221 is configured such that when the left eye of the subject observes the left fixation lamp 221, the left eye disk in the fundus image acquired by the imaging unit 30 is located at a 15 ° field of view position on the left side of the macula lutea; the right eye fixation lamp 222 is provided so that when the detected right eye observes the right fixation lamp 222, the right eye disk in the fundus image acquired by the imaging unit 30 is located at the 15 ° field of view position on the right side of the macula lutea. With the arrangement, the doctor has the highest success rate of shooting the fundus image with the macula lutea positioned in the center of the image.

Further, the fundus camera 100 is provided with an infrared illumination lamp (not shown). The infrared illumination lamp is used to illuminate the fundus of the eye to enable the imaging assembly 30 to generate a preview infrared image. The infrared illuminating lamp does not stimulate human eyes, so that the preview infrared image can be obtained under the condition that the detected person is comfortable. The detection component is used for detecting the position of the optic disc in the infrared image. When the left fixation lamp or the right fixation lamp is lighted, the detection component works. Referring to fig. 4, when the detection component detects that the optical disc is located in the preset area 41, the prompt component gives a first prompt; when the detection component detects that the video disc is located outside a preset area 41 in the infrared image, the prompt component gives a second prompt; referring to fig. 3, when the detection module detects that the optic disc in the infrared image partially overlaps the preset area 41, the prompt module gives a third prompt. The prompting component can be a loudspeaker or pictures and texts displayed on a display screen. When the prompting component is a loudspeaker, the first prompt may be a voice indicating that the video disc is located outside the preset region, the second prompt may be a voice indicating that the video disc is located outside the preset region, and the third prompt may be a voice prompting the doctor to move the fundus camera left or right. When the prompting component is a text displayed on the display screen, the first prompt may be to change the square line 411 of the preset area 41 to green, the second prompt may be to change the square line 411 of the preset area 41 to red, and the third prompt may be to display a left or right arrow in the preset area 41 to prompt the physician to move the fundus camera left or right.

Further, the fundus camera 100 is also provided with an autofocus unit (not shown) and an image sharpness recognition unit (not shown). When the detection assembly detects that the optic disc is located in the preset area 41, the automatic focusing assembly works. When the image definition recognition component recognizes that the definition value of the infrared image is higher than a preset threshold value, the fundus camera 100 automatically takes a picture.

Compared with the prior art, the fundus camera 100 of the present invention can easily capture a fundus image with the macula lutea located at the center of the image, thereby reducing the difficulty of the physician's work.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. A fundus camera comprises a lens assembly for converging imaging light reflected by a fundus, a vision fixing assembly for guiding and fixing the visual line direction of a detected person, and an imaging assembly for generating a fundus image according to the imaging light converged by the lens assembly; the method is characterized in that: the vision fixation assembly comprises a left vision fixation lamp and a right vision fixation lamp; the left fixation lamp is arranged in such a way that when the left fixation lamp is observed by the left eye of the detected person, the left eye optic disk is positioned at the position of a 10-20-degree visual field on the left side of the macula lutea; the right fixation lamp is set to be positioned at a field of view position of 10-20 degrees on the right side of the macula lutea when the right fixation lamp is observed by the right eye of the detected person.

2. The fundus camera of claim 1, wherein: the left fixation lamp is set to be positioned at a 15-degree visual field position on the left side of the macula lutea when the left eye of the detected person observes the left fixation lamp; the right fixation lamp is set such that the right eye disk is located at a 15 DEG field of view position on the right side of the macula lutea when the right fixation lamp is viewed by the right eye of the subject.

3. The fundus camera of claim 1, wherein: the fundus camera is also provided with a detection component for detecting the position of the optic disc; when the left fixation lamp or the right fixation lamp is lighted, the detection component works.

4. A fundus camera according to claim 3 wherein: the fundus camera is also provided with a prompt component; when the detection component detects that the optic disc is located in the preset area, the prompt component gives a first prompt.

5. A fundus camera according to claim 3 wherein: the fundus camera is also provided with a prompt component; and when the detection component detects that the video disc is located outside the preset area, the prompt component gives a second prompt.

6. A fundus camera according to claim 3 wherein: the fundus camera is also provided with a prompt component; and when the detection component detects that the optic disc is partially overlapped with the preset area, the prompt component gives a third prompt.

7. An eye fundus camera according to any one of claims 4 to 6 wherein: the prompting component is a loudspeaker.

8. An eye fundus camera according to any one of claims 4 to 6 wherein: the fundus camera is also provided with a display screen; the prompt component is an image-text displayed on the display screen.

9. A fundus camera according to claim 3 wherein: the fundus camera is also provided with an automatic focusing assembly; and when the detection component detects that the optic disc is positioned in a preset area, the automatic focusing component works.

10. The fundus camera of claim 9, wherein: the fundus camera is also provided with an infrared illuminating lamp and an image definition identification component; the infrared illumination lamp is used for illuminating the fundus so that the imaging assembly can generate an infrared image; when the image definition recognition component recognizes that the definition value of the infrared image is higher than a preset threshold value, the eye fundus camera automatically takes a picture.