Eye Correction Device Using Separator Optics
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Solution Overview
Problem
Current methods for determining eye correction values are cumbersome, requiring multiple test images or procedures and often disrupting natural vision by introducing transverse disparity and the need for optotypes, which complicates the determination of optimal visual acuity and eye alignment.
Innovation Solution
A method and device that project two differentiated images or videos with no transverse disparity, using separator optics to ensure each eye sees a separate image, allowing for the introduction of lenses to achieve optimal visual impression and determine correction values without optotypes, while considering eye dominance and color contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple test images or procedures are used to determine eye correction values, then measurement precision is improved, but device complexity and time consumption increase
Solution Approach 1:
The patent combines multiple test functions into a single image display system. Two differentiated images (one for each eye) are projected simultaneously onto a single projection surface without transverse disparity, eliminating the need for multiple separate test procedures and reducing overall system complexity while maintaining measurement precision.
Solution Approach 2:
The projection surface serves multiple functions: it displays differentiated images for both eyes simultaneously, presents test patterns for visual acuity assessment, and allows for lens introduction without requiring separate equipment for each function, thereby reducing device complexity while maintaining comprehensive eye correction determination capability.
2Measurement precision
If separator optics are used to separate images for each eye, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces a phoropter as an intermediary device that integrates the separator optics with the lens introduction mechanism. This single intermediary component achieves both image separation for each eye and lens insertion functions, reducing overall device complexity compared to having separate systems for each function.
3Measurement precision
If transverse disparity is introduced in test images, then eye alignment measurement is improved, but natural vision is disrupted
Solution Approach 1:
The patent applies different contrast qualities locally to different regions of the projected image. The first image has contrast optimized for the first eye while the second image has contrast optimized for the second eye, allowing each eye to receive tailored visual information without introducing transverse disparity that would disrupt natural vision and eye alignment.
4Measurement precision
If optotypes are used for visual acuity testing, then measurement precision is improved, but the determination process becomes more complex
Solution Approach 1:
The patent changes the parameter of image differentiation from traditional optotype variations to contrast-based differentiation between two images. By varying contrast parameters rather than using multiple types of optotypes, the system maintains visual acuity measurement precision while simplifying the test procedure and reducing the number of required test 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
This approach simplifies the determination of eye correction values by maintaining natural vision alignment, allowing for balanced and comfortable vision, and enables the assessment of blur and convergence points without prism glasses, using a single image or video.
Implementation Method 1
separating the first and second images or videos using suitable separator optics such that each image or video is seen by only one eye
Implementation Method 2
Successive introduction of different lenses into the visual field of the first and/or the second eye while continuously viewing the images or videos until an optimal visual impression is achieved
Data Source
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AI summary
Method and apparatus for determining the corrective values of a person's eyes, wherein the apparatus comprises a projection surface suitable for projecting two differentiated images or videos into the person's field of vision, wherein the images or videos exhibit substantially no transverse disparity with each other. The apparatus further comprises a separator optic suitable for separating the two differentiated images or videos for the two eyes and several lenses suitable for being successively introduced into the field of vision of the eyes in order to determine the corrective values of the eyes, using an optimal visual impression of the eyes with lens(es) in the field of vision compared to the visual impression without lens(es) in the field of vision of the eyes.