Display-Integrated Refractive Element for Presbyopic Vision Correction
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Solution Overview
Problem
Presbyopic eyes struggle to focus on near objects, such as electronic displays, due to the inflexibility of the lens, resulting in blurred images, and existing solutions require constant wear of reading glasses.
Innovation Solution
A device with a refractive element, preferably a plano-convex structure made of clear polymer, is integrated directly onto the electronic display to alter the vergence of light rays, collimating them to be substantially parallel, mimicking distant objects and allowing the eye to focus correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If reading glasses are worn to correct presbyopia, then clear vision of near objects is achieved, but the user must constantly carry and wear the glasses
Solution Approach 1:
The patent combines the display device and the refractive element into a single integrated unit. The refractive element is positioned directly on or near the display screen, merging the function of light refraction with the display function, thereby eliminating the need for separate reading glasses while maintaining vision correction accuracy
Solution Approach 2:
The refractive element acts as an intermediary between the display screen and the user's eye. It modifies the light rays emitted from the display before they reach the eye, serving as a mediator that corrects the optical path without requiring the user to wear traditional glasses
2Manufacturing precision
If traditional optics are placed at the spectacle plane, then light rays are manipulated to reach the eye parallel, but the device complexity increases
Solution Approach 1:
The patent extracts the refractive function from the traditional spectacle plane and relocates it directly to the display device. This separation removes the need for complex spectacle-based optical systems while achieving the same light ray control precision through a simplified display-integrated approach
Solution Approach 2:
The refractive element is applied locally at specific regions of the display device rather than requiring a complete optical system at the spectacle plane. This localized approach reduces overall device complexity while maintaining precise light ray control where it is most needed - at the source of light emission
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
This solution enables clear vision of electronic displays without the need for reading glasses, providing a simpler and more effective alternative to existing optics-based solutions by ensuring that light rays reach the retina in a parallel orientation, thus producing a sharp image for presbyopic eyes.
Implementation Method 1
a refractive element that refracts rays, emitted from a pixel of an electronic display, at a predetermined vergence
Implementation Method 2
the refractive element comprises a plano-convex structure... the radius of which collimates the rays emitted from the pixel
Data Source
AI summary
A device for altering vergence of light to improve human vision of an electronic display. The change in vergence is received at the pupil of the wearer. The altered light effectively recreates the rays emitted by a pixel such that they reach a presbyopic eye as though they were being viewed at a distance (i.e., the rays are substantially parallel). As such, the emmetropic presbyopic eye produces a sharp image of the electronic display. The device comprises: a refractive element that refracts rays, emitted from a pixel of an electronic display, at a predetermined vergence, wherein the refractive element is located directly adjacent or on the electronic display.