Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vision detection method capable of realizing light modulation

A vision detection and light adjustment technology, applied in the field of ophthalmic instruments, can solve problems such as inability to perform accurate detection

Inactive Publication Date: 2021-09-10
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned technical solution adopts the traditional visual acuity test table for detection, which can only roughly detect whether myopia is present, and cannot perform accurate detection

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vision detection method capable of realizing light modulation
  • Vision detection method capable of realizing light modulation
  • Vision detection method capable of realizing light modulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as Figure 10 As shown, a vision detection method for realizing adjustable light; including the following steps:

[0056] S1, the subject's eyes are at the front end of the camera, the first motor drives the arc-shaped screw to rotate on the horizontal plane to adjust the different irradiation angles of the illuminating body on the horizontal plane, and the second motor drives the visor to rotate. The illuminating body on the shaped screw forms an angle cross to block;

[0057] S2, by turning the internal thread ring to drive the lighting body to rotate and adjust on the arc-shaped screw rod, and adjust multiple lighting bodies at any position within the same arc;

[0058] S3, through the third motor installed in the lighting body to drive the adjustment mechanism, change the distance between the infrared spotlight on the connecting plate and the lens, thereby changing the focal length, forming diffuse light through the lens, so that the light intensity of each po...

Embodiment 2

[0067] Such as figure 1 As shown, a vision detection system based on adjustable light; includes a camera 2, a half-return mirror 3 of the board head; a lighting mechanism 1 is arranged below the half-return mirror 3 of the board head, and the lighting mechanism 1 performs light adjustment, so The lighting mechanism 1 includes a base 11, a first motor 12 is arranged above the base 11, the output shaft of the first motor 12 is driven and connected with an arc-shaped screw rod 13, and the arc-shaped screw rod 13 is provided with a plurality of lighting bodies 15, The illuminating body 15 is provided with an infrared spotlight 1511 inside, and the infrared spotlight 1511 is connected with an adjustment mechanism, and the adjustment mechanism adjusts the beam angle, focal length, and beam distance of the infrared spotlight 1511. Illumination mechanism 1 injects infrared light into the human eye through the half-return mirror 3 of the board head, refracts the human eye, and then inj...

Embodiment 3

[0069] Such as Figure 2-5 , 7, on the basis of Embodiment 1, the output shaft of the first motor 12 is connected to the center of the arc-shaped screw 13, and the side of the arc-shaped screw 13 away from the first motor 12 is connected with a second The output shafts of the motor 16 and the second motor 16 are driven and connected with a shading plate 17, which is transparent or non-transparent, colored or colorless, and has a multi-layer structure.

[0070] One end of the illuminating body 15 provided on the arc screw 13 is provided with an internal thread ring 14, and the internal thread ring 14 is matched and rotationally connected with the arc screw 13; the arc screw 13 is connected with the first motor 12 The same number of illuminating bodies 15 are set on both sides of the center of the output shaft.

[0071] The central position of the outer wall of the internally threaded ring 14 is provided with a "I" type chute 19 along the circumferential direction, and the cent...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a vision detection method capable of realizing light modulation. The vision detection method comprises the following steps that S1, the eyes of a subject are placed at the front end of a camera, and a shading plate and illuminants on an arc-shaped lead screw form angle crossing for shading; S2, an internal thread ring is rotated to drive the illuminants to rotate and adjust on the arc-shaped lead screw, and the plurality of illuminants are adjusted at any position in the same radian; S3, an adjusting mechanism is driven by a third motor arranged in the illuminants, and the distance between each infrared spotlight on a connecting plate and a lens is changed; S4, images of pupils under different light are shot through a camera; and S5, image processing and refraction information extraction are carried out on the captured pupil images through a single chip microcomputer arranged in the system to obtain a human eye detection result. The illumination is comprehensively adjusted and interacts with each other, so that the illumination for vision detection meets relatively high requirements, the accuracy of shot pictures is improved, and the detection error is reduced.

Description

technical field [0001] The invention belongs to the technical field of ophthalmic instruments, and in particular relates to a vision detection method for realizing adjustable light. Background technique [0002] Good eyesight is an important part of health, and it is also an important factor to ensure an individual's independent life and quality of life. However, with the heavy school work of young people, the myopia of children and young people is gradually increasing. Wearing glasses too early not only affects children's life and learning , It also affects children's participation in sports activities and labor, resulting in low enthusiasm for children's participation, and even affecting the normal development of children, causing eye deformation and affecting image. Although the number of myopia patients is increasing, it can be restored to normal when detected early and treated in time. At present, pupil dilation and visual electrophysiological methods are mostly used f...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B3/103A61B3/00A61B3/15
CPCA61B3/103A61B3/0008A61B3/0075A61B3/154A61B3/0025
Inventor 刘意谷中秀李媛媛马宇马俊磊
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com