Magnifying Display Device Vertical Defocus Myopia Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing prevalence of myopia in children due to prolonged focus on near objects, especially with the use of electronic devices, necessitates a solution that reduces eye strain and delays myopia progression without relying on conventional corrective measures like glasses or contact lenses.
Innovation Solution
A magnifying display device incorporating a magnifying reflective mirror module with a dual-curved convex or concave mirror configuration, providing vertical defocus by focusing half of the line-of-sight on the retina and the other half in front of it, thereby creating a significant difference in vertical and horizontal virtual image distances to reduce eye axis growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional corrective measures like glasses or contact lenses are used, then myopia can be corrected, but they do not effectively delay myopia progression and require continuous wear
Solution Approach 1:
The patent replaces conventional optical correction systems (glasses, contact lenses) with a magnifying display device that creates virtual images at different distances. The system uses a magnifying lens and display screen to present enlarged content, reducing the need for continuous corrective wear while maintaining visual acuity.
Solution Approach 2:
The patent changes the optical parameters by creating vertical defocus through asymmetric image projection. The system projects images with different vertical and horizontal focal distances, causing the retina to move forward and counteract eye axis growth, thereby delaying myopia progression without requiring continuous corrective device wear.
2Productivity
If eyes focus on near objects for long periods, then electronic device usage is enabled, but myopia prevalence increases due to prolonged near focus
Solution Approach 1:
The patent introduces a vertical dimension to image focusing by creating asymmetric focal distances. The magnifying display device projects images that focus at different distances vertically versus horizontally, causing the retina to move forward in the vertical dimension, which counteracts the harmful effect of prolonged near focus and delays myopia progression.
3Reliability
If peripheral defocusing correction glasses are worn, then peripheral myopia defocus is achieved, but the device complexity and manufacturing precision requirements increase
Solution Approach 1:
The patent extracts the essential function of peripheral defocus from complex multi-element lenses and implements it through a simpler magnifying display system. By using a single magnifying lens to create virtual images with controlled focal distances, the system achieves the therapeutic effect without requiring complex lens microstructures or multiple optical elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively delays myopia progression by reducing the frequency of focusing on near objects and providing vertical defocus, which counteracts eye axis growth, offering a preventive measure against myopia while maintaining clear vision.
Implementation Method 1
The reflective sheet is configured to receive a projected image and then reflect the projected image
Implementation Method 2
The magnifying sheet is configured to receive and then magnify a reflected image from the reflective sheet
Implementation Method 3
The magnifying sheet is configured to receive and then magnify a reflected image from the reflective sheet
Data Source
AI summary
A magnifying display device includes a magnifying reflective mirror module configured to a load frame bracket. The magnifying reflective mirror module is provided with a reflective sheet to receive and reflect a projected image and a magnifying sheet to receive and magnify a reflected image from the reflective sheet. The reflective sheet is a dual-curved convex mirror or the magnifying sheet is a dual-curved concave mirror to provide a vertical defocus, enabling the reflected image being displayed in a vertical virtual image distance farther than in a horizontal virtual image distance, so that the reflected image is projected on an eyeball forming a defocused image in a vertical line-of-sight image area and a focused image in a horizontal line-of-sight image area.