Mobile-phone-type direct ophthalmofundoscope

Abstract

The invention discloses a mobile-phone-type direct ophthalmofundoscope. The mobile-phone-type direct ophthalmofundoscope comprises a shell, wherein the lower end of the shell is a handheld end; the upper end of the shell is a video imaging end; a lighting module, an observation module, a fundus imaging module and an image transmission module are arranged in the shell; the lighting module comprises a light source, a light intensity adjusting device, a diaphragm disc, a condenser lens and a reflecting mirror; the condenser lens and the diaphragm disc are arranged in a light path between the light source and the reflecting mirror sequentially; the light source is arranged at the handheld end; the reflecting mirror is arranged at the video imaging end; and an observation system module, the fundus imaging module and an imaging display module are arranged at the video imaging end. The invention provides the mobile-phone-type direct ophthalmofundoscope, which is convenient to carry by an examiner and can photograph the fundus image and transmit the fundus image in a wireless mode.

Description

technical field [0001] The invention relates to a mobile phone-type direct ophthalmoscope, relates to technologies such as image collection and network transmission, belongs to the field of ophthalmic medical observation and diagnosis equipment, and is mainly used for fundus disease screening and assisting the diagnosis and condition judgment of other systemic diseases throughout the body. Background technique [0002] The fundus examination using direct ophthalmoscope does not need to dilate the pupils of the examinee. It is a simple, fast and accurate examination. It can not only check whether there are lesions in the optic nerve, retina, choroid and refractive medium, but also can pass Fundus examination assists in the diagnosis and judgment of other systemic diseases, such as arteriosclerosis, intracranial hematoma, and diabetes. The traditional direct ophthalmoscope includes an illumination system and an observation system. Its basic principle is to use an ophthalmoscop...

AI Technical Summary

Problems solved by technology

[0003] The traditional direct ophthalmoscope does not have the function of shooting and recording, and different doctors are more subjective in observing and judging patients' fundus diseases, and it is impossible to form a visual medical record management

If you need fundus images, you must go to a fixed instrument to take pictures, which is very inconvenient for special patients

You Yongsheng and others conducted a feasibility study on the digital image system of the direct ophthalmoscope, using an optical adapter, an image transmission fiber bundle, a CCD and an image acquisition card to connect the direct ophthalmoscope and the electronic computer, so that the fundus image observed by the direct ophthalmoscope can It is displayed on the display screen of the computer in the form of digital signals, but the system equipment is complicated, it is not easy to be carried around, and it does not have strong clinical practicability

Patent 92105247.2 introduces a new type of hand-held ophthalmoscope, which has a camera system, which uses high-brightness exposure photography to take pictures of the fundus and displays them on a flat-panel display. The eye causes the pupil to narrow instantly, which affects the continuous shooting of the ophthalmoscope

Moreover, the handheld ophthalmoscope uses an external camera, and the instrument is still relatively complicated and bulky, which does not meet the requirements of doctors for portable ophthalmoscopes.

In addition, the fundus mirror uses a spectroscopic system to split the light reflected by the patient's fundus, so that only part of the light intensity enters the camera, which may lead to a decrease in the contrast of the fundus image and cannot obtain a clear fundus image

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