E3S Web Conf.
Volume 252, 20212021 International Conference on Power Grid System and Green Energy (PGSGE 2021)
|Number of page(s)||4|
|Section||Research and Development of Electrical Equipment and Energy Nuclear Power Devices|
|Published online||23 April 2021|
Design and Research of Handheld Automatic Refractor
1 Mechanical Engineering, Changchun University of Science and Technology, Changchun, Jilin, 130022, China
2 Changchun University of Science and Technology Chongqing Research Institute, Chongqing, 401135, China
The existing refractors are mainly fixed devices, and require different degrees of cooperation during the refraction process, which takes a long time and is relatively easy for adults, but it is difficult for preschoolers and people with difficulties in cooperation. Optometry. In this paper, by designing a handheld automatic refractor, the composition, working principle and working process of the refractor are introduced. Through benchmarking experiments with the existing traditional refractor, the experiment shows that the accuracy of the diopter detection by the algorithm in this paper is less than 0.05D, and the detection time is about 5s. The speed is fast and the operation is simple, which solves the problem of vision screening for preschool children or those with disabilities.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.