Automatic focusing method of slit lamp microscope and slit lamp microscope

Abstract

The present invention relates to an automatic focusing method for a slit lamp microscope and the method comprises the following steps: S1, tracking a camera to obtain a face image and uploading the face image to an upper computer, recognizing human eyes in the image by the upper computer and also calculating center coordinates of the human eyes; S2, obtaining the center coordinates of the human eyes by a control mainboard, comparing the center coordinates of the human eyes with a center coordinate of the image, respectively sending control instructions to control an x-axis motor and a y-axis motor to rotate according to comparison results, and enabling the center of the image to tend to the center coordinates of the human eyes; S3, obtaining the images of the human eyes by a fundus camera,uploading the images of the human eyes to the upper computer, and identifying definition of the images of the human eyes by the upper computer; and S4, obtaining the definition of the images of the human eyes by the control mainboard and comparing the definition of the images of the human eyes with a standard definition, sending control instructions to control a z-axis motor to rotate when judging that the definition of the images of the human eyes is lower than the standard definition, and enabling the definition of the images of the human eyes to tend to the standard definition. The automatic focusing method for the slit lamp microscope can realize automatic focusing of the slit lamp microscope, does not need manual adjustment, reduces manpower input during focusing of the slit lamp microscope, and improves focusing efficiency and precision.

Description

technical field [0001] The invention relates to the field of ophthalmic medical equipment, in particular to an automatic focusing method for a slit lamp microscope and a slit lamp microscope. Background technique [0002] Slit lamp microscope examination uses a concentrated light source to illuminate the examination site, which is convenient to present a strong contrast with the dark surrounding area, and then cooperates with the binocular micro magnifying glass, not only can make the superficial lesion observed very clearly, but also can use the fine The optical slit zone forms a series of "optical sections" through the transparent tissue of each part of the eyeball, so that different layers of the refractive interstitium and even small lesions in deep tissues can be clearly displayed. Because different people have different heights, when each patient sits in front of the slit lamp microscope, the distance from the patient's eyes to the microscope is different. Therefore, w...

AI Technical Summary

Problems solved by technology

However, during the focusing process of existing slit lamp microscopes, the position of the fundus camera is adjusted manually, and the manual adjustment method has problems such as slow adjustment speed, high requirements for operator experience, and high labor pressure.

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