CN113892905A - Portable self-service type eye ground camera device and focusing and shooting method - Google Patents

Abstract

The application discloses a portable self-service fundus camera device and a focusing shooting method, which are characterized by comprising a host, wherein the front end of the host, close to the human eye end, is provided with an eye-catching objective lens, two sides of the eye-catching objective lens are provided with an outer eye side camera and an outer eye illumination light source, and the host is also internally provided with an fundus illumination light source; a beam splitter prism, a focusing mirror group and an image sensor at the tail end are sequentially arranged on the central axis of the ocular objective lens; a reflector is arranged in the light splitting direction of the light splitting prism, and a projection mirror group, a dichroic mirror and a tail-end micro display are sequentially arranged in the light reflecting direction of the reflector; a focusing light source is arranged in the reflection direction of the dichroic mirror; the self-service type fundus camera has the advantages that by redesigning a set of optical system for the self-service type fundus camera device and matching with an interaction method of focusing and shooting, a user can realize self-service shooting through interaction operation, and the portable self-service type fundus camera convenient for self-service shooting is realized.

Description

Portable self-service type eye ground camera device and focusing and shooting method

Technical Field

The application relates to a portable self-service type eye ground camera device and a focusing and shooting method, which are suitable for self-service type eye ground shooting of a user and belong to the technical field of medical instruments.

Background

Most of the existing fundus cameras have large volume, large weight and need to be operated by professionals, the realization of an automatic shooting function is complex, a servo mechanism depending on multi-axis movement is adopted, and the reliability and the cost are difficult to control.

Disclosure of Invention

The technical problem that this application will be solved is that the automatic shooting cost of current fundus camera is higher, the relatively poor problem of reliability.

In order to alleviate the above problems, on one hand, the application provides a portable self-service fundus camera device, which is characterized by comprising a host, wherein an eye-catching objective lens is arranged at the front end of the host, close to the human eye end, both sides of the eye-catching objective lens are provided with an outer eye side camera and an outer eye illumination light source, and a fundus illumination light source is also arranged in the host; a beam splitter prism, a focusing mirror group and an image sensor at the tail end are sequentially arranged on the central axis of the ocular objective lens; a reflector is arranged in the light splitting direction of the light splitting prism, and a projection mirror group, a dichroic mirror and a tail-end micro display are sequentially arranged in the light reflecting direction of the reflector; and a focusing light source is arranged in the reflection direction of the dichroic mirror.

On the other hand, the application also provides a self-service fundus photographing and focusing shooting method, which is characterized in that the portable self-service fundus camera device is adopted, and the specific steps are as follows:

the front end of a host props against eyes, an outer eye illumination light source illuminates the whole eyes, two outer eye side cameras identify pupils, the position difference of the pupils relative to an eye-catching objective lens is obtained through calculation, and the position difference is displayed on a micro display;

step two, the human eyes look into the host, and the position of the host relative to the eyes is adjusted by self according to the difference prompted in the picture of the microdisplay;

step three, in the process of the step two, the focusing light source always projects focusing light to the eyeground to form a group of images for focusing, the images form corresponding shapes on the image sensor, and the focusing mirror group is adjusted according to the shape and the position until the eyeground focusing light imaging reaches the parfocal position;

and fourthly, adjusting the position of the host in place, finishing focusing of the focusing mirror group, flashing the fundus illumination light source, and simultaneously shooting and acquiring fundus pictures by the image sensor to finish self-service fundus photography.

The self-service type fundus camera has the advantages that by redesigning a set of optical system for the self-service type fundus camera device and matching with an interaction method of focusing and shooting, a user can realize self-service shooting through interaction operation, and the portable self-service type fundus camera convenient for self-service shooting is realized.

Drawings

FIG. 1 is a schematic view of a self-service fundus camera provided in an embodiment;

FIG. 2 is a schematic view of a self-service fundus camera host and eyeshade;

FIG. 3 is a schematic diagram illustrating host position adjustment through differences prompted in a microdisplay frame;

FIG. 4 is a schematic diagram of a microdisplay image after host position adjustment is completed.

Detailed Description

In order to make the present application more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

In the embodiment, a set of optical system is designed for the self-service fundus camera device, and the self-service photographing can be realized by a user through interactive operation by matching with an interactive method of focusing and photographing, so that the portable fundus camera convenient for self-service photographing is realized.

The structure is schematically shown in fig. 1, an ocular objective lens 1 is arranged near human eyes, both sides of the ocular objective lens 1 are provided with an external eye side camera 2, one side is provided with an external eye illumination light source 3, the device also comprises an eyeground illumination light source 4, and a beam splitter prism 5, a focusing mirror group 6 and a tail end image sensor 7 are sequentially arranged on the central axis of the ocular objective lens 1;

a reflecting mirror 8 is arranged in the light splitting direction of the light splitting prism 5, and a projecting mirror group 9 and a dichroic mirror 10 are sequentially arranged in the light reflecting direction of the reflecting mirror 8 until the tail end micro display 11 is reached;

a focusing light source 12 is arranged in the reflection direction of the dichroic mirror 10;

the above structures are all arranged in the main machine 14, as shown in fig. 2, the front end of the main machine 14 near the eyes is provided with an eye cover 15 for isolating external light and providing initial position location against the eyes.

The working process of the portable self-service fundus camera device provided by the embodiment is as follows: the front end eye shield 15 of the host 14 props against eyes to provide initial position location, the external eye lighting source 3 illuminates the whole eyes, the two external eye side cameras 2 recognize pupils, the position difference of the pupils relative to the objective lens 1 is obtained through calculation, the position difference is displayed on the micro display 11, the eyes of people look into the host to see the picture displayed in the micro display 11, the position of the host 14 relative to the eyes is adjusted by self according to the prompting difference in the picture, as shown in fig. 3, the user adjusts the eye aligning position of the user by watching the deviation of the inner ring and the outer ring in the picture, the position of the inner ring is adjusted by moving the host 14 up and down and left and right, when the host 14 is moved back and forth, the inner ring is enlarged forward and the inner ring is reduced backward until the inner ring and the outer ring are completely overlapped, as shown in fig. 4;

in the above process, the focusing light source 12 projects focusing light all the time to the fundus to form a group of images for focusing, the images form a corresponding shape on the image sensor 7, and the focusing mirror group 6 is adjusted according to the shape position until the fundus focusing light image reaches the parfocal position;

in the process of adjusting the eye position of the host 14, the host 14 is adjusted to be in a proper position in the front-back direction of the upper, lower, left and right according to the difference prompted in the picture on the microdisplay 11, and the focusing of the focusing mirror group 6 is also completed, the fundus illumination light source 4 is controlled to flash, and meanwhile, the image sensor 7 shoots and collects fundus pictures, so that self-service fundus photography is completed.

Claims (3)

1. A portable self-service fundus camera device is characterized by comprising a host, wherein an eye-catching objective lens is arranged at the front end of the host close to the human eye end, an outer eye side camera and an outer eye illumination light source are arranged at two sides of the eye-catching objective lens, and a fundus illumination light source is also arranged in the host; a beam splitter prism, a focusing mirror group and an image sensor at the tail end are sequentially arranged on the central axis of the ocular objective lens; a reflector is arranged in the light splitting direction of the light splitting prism, and a projection mirror group, a dichroic mirror and a tail-end micro display are sequentially arranged in the light reflecting direction of the reflector; and a focusing light source is arranged in the reflection direction of the dichroic mirror.

2. A portable self-service fundus camera apparatus according to claim 1, wherein said main unit is externally provided with an eye shield towards one end of the glasses for providing an initial positional location against the eyes.

3. A self-service fundus camera focusing photographing method, characterized in that the portable self-service fundus camera device of claim 1 or 2 is adopted, and the specific steps are as follows:

the front end of a host props against eyes, an outer eye illumination light source illuminates the whole eyes, two outer eye side cameras identify pupils, the position difference of the pupils relative to an eye-catching objective lens is obtained through calculation, and the position difference is displayed on a micro display;

step two, the human eyes look into the host, and the position of the host relative to the eyes is adjusted by self according to the difference prompted in the picture of the microdisplay;

step three, in the process of the step two, the focusing light source always projects focusing light to the eyeground to form a group of images for focusing, the images form corresponding shapes on the image sensor, and the focusing mirror group is adjusted according to the shape and the position until the eyeground focusing light imaging reaches the parfocal position;

and fourthly, adjusting the position of the host in place, finishing focusing of the focusing mirror group, flashing the fundus illumination light source, and simultaneously shooting and acquiring fundus pictures by the image sensor to finish self-service fundus photography.

Images