Title:
VISION TESTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/110108
Kind Code:
A1
Abstract:
A vision testing apparatus, comprising: a light generating assembly (300), used for producing parallel light beams; a testing assembly (200), comprising a pattern sheet (210), a vision testing table being disposed on the pattern sheet (210); and an imaging assembly (400), comprising a plurality of convex mirrors used for magnification of the projected pattern and far-distance imaging; a first cavity (130), a first opening (110), and a second opening (120) are disposed in a first shell (100), the light generating assembly (300) and the imaging assembly (400) being arranged in the first cavity (130), and the pattern sheet (210) being arranged between the light generating assembly (300) and the imaging assembly (400); the parallel light produced by the light generating assembly (300) illuminates the pattern sheet (210), projecting the vision testing table onto the imaging assembly (400), and the imaging assembly (400) magnifies and implements far-distance imaging of the vision testing table. The present vision testing apparatus eliminates the complexity of original testing methods, and can detect whether the vision of an eye has a problem, such as near-sightedness, simply by placing the vision testing apparatus against the eye, thereby reducing costs, facilitating use by more people, and being capable of testing at any time and place.
Inventors:
ZHANG KEYU (CN)
Application Number:
PCT/CN2020/133676
Publication Date:
June 10, 2021
Filing Date:
December 03, 2020
Export Citation:
Assignee:
SHENZHEN GOLDEN TITAN SCIENCE&TECHNOLOGY CO LTD (CN)
International Classes:
A61B3/032
Foreign References:
| CN110811534A | 2020-02-21 | |||
| CN211834335U | 2020-11-03 | |||
| CN109984720A | 2019-07-09 | |||
| US20150116666A1 | 2015-04-30 | |||
| CN206809264U | 2017-12-29 | |||
| CN1843287A | 2006-10-11 |
Attorney, Agent or Firm:
GUANGDONG YUNFENG LAW FIRM (CN)
Download PDF: