Fundus camera with auto focus

An autofocus and camera technology, applied in ophthalmoscopes, eye testing equipment, medical science, etc., can solve problems such as pupil constriction, fundus focusing, and difficulty in focusing time, and achieve the effect of reducing light stimulation and accurate autofocus
CN110974152BActive Publication Date: 2021-08-17SHENZHEN SIBRIGHT TECH CO LTD
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN SIBRIGHT TECH CO LTD
Publication Date
2021-08-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present disclosure relates to an autofocus fundus camera, which includes: a light source for emitting a first light beam and a second light beam to the fundus of the eye, the first light beam is a light beam insensitive to the eye; a lens assembly; an imaging element for Receive the first light beam and the second light beam passing through the lens assembly; a recording module, which is used to record the first focus position when the first light beam is focused on the imaging element; a processing module, which is based on the wavelength of the first light beam and the diopter of the lens assembly Obtain the diopter of the eyeball with the first focus position, and obtain the second focus position after the second beam passes through the lens assembly based on the wavelength of the second light beam, the diopter of the eyeball and the diopter of the lens assembly; and the driving mechanism, which is based on the second focus The position adjusts the relative position between the lens assembly and the imaging element. According to the present disclosure, the fundus can be accurately auto-focused when the fundus image is collected, and the light stimulation to the eyes can be effectively reduced during the focusing process.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present disclosure relates to an autofocus fundus camera. Background technique

[0002] With the development of ophthalmic medical care, doctors can diagnose whether the subject suffers from fundus diseases by observing the fundus such as the retina, optic disc, and blood vessel distribution. At present, in clinical practice, doctors and the like usually use a fundus camera to collect fundus images of human eyes to observe the fundus.

[0003] The fundus camera can emit a beam of light to the fundus through the pupil, and receive the reflected beam to image the fundus. In the existing fundus cameras, a single visible light is usually used to directly collect fundus images. Visible light is good for lighting, so it can be used to collect images of the dark fundus. However, this single visible light fundus camera still has many shortcomings. . For example, since the eyes are more sensitive to visible light, when using visible light to collect fund...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More