Optoelectronic Binocular Instrument for Presbyopia Correction
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Solution Overview
Problem
Current presbyopia correction methods are partial, static, and often disrupt stereo vision, requiring user training and relying on external cameras or limited optical power adjustments, which are uncomfortable and inefficient.
Innovation Solution
An optoelectronic binocular instrument with a high-speed pupil tracking system using cameras and GPUs for real-time correction, featuring variable optical power optoelectronic lenses that adjust based on continuous pupil size and interpupillary distance calculations to provide automatic, binocular presbyopia correction without subject intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If monofocal glasses are used for near focus, then near target vision is improved, but far target vision deteriorates
Solution Approach 1:
The patent employs dynamic lenses that can change their optical power in real-time based on the distance of the observed target. This allows the same lens to adapt between near and far focus requirements, resolving the contradiction between specialized near-focus performance and overall distance versatility.
Solution Approach 2:
The optical power parameter of the lens is made variable rather than fixed. By continuously adjusting the focal length parameter according to the detected target distance, the system achieves both precise near focus and maintained far vision capability within a single optical device.
2Adaptability or versatility
If bifocal or progressive glasses are used, then both near and far focus vision are provided, but stereo vision and ease of operation deteriorate due to training requirements
Solution Approach 1:
The system performs automatic distance detection and lens power adjustment without requiring user intervention or training. The camera captures target distance information, the processor calculates the appropriate focal length, and the lens adjusts automatically, making the device self-regulating and eliminating the need for user learning.
Solution Approach 2:
The system establishes a feedback loop where the camera continuously monitors target distance, the processor compares this with the current lens state, and the lens adjusts accordingly. This closed-loop control ensures the lens is always at the optimal focal length for the observed target, eliminating the adaptation period required by traditional multifocal glasses.
3Adaptability or versatility
If monovision technique is used, then near and far focus are assigned to different eyes, but stereo vision and image summation deteriorate
Solution Approach 1:
Instead of assigning different functions to each eye, the patent makes both eyes' lenses capable of performing the same adaptive function. Both lenses can independently adjust to the same focal length based on the detected target distance, ensuring that both eyes provide identical sharp images for proper binocular fusion and stereo vision.
4Extent of automation
If external cameras are used for presbyopia correction, then presbyopia correction is achieved, but device complexity and reliability deteriorate due to external dependencies
Solution Approach 1:
The patent integrates the camera, processor, and adjustable lens into a single unified optical device. The camera module is incorporated within the spectacle frame, the processor is embedded in the device, and the adjustable lens is directly mounted in the spectacle lens position. This merging eliminates external dependencies and creates a self-contained system.
5Device complexity
If limited series of optical power values are applied, then device complexity is reduced, but productivity and user comfort deteriorate due to non-continuous adjustments
Solution Approach 1:
The lens transitions from a static optical power setting to a dynamic, continuously adjustable system. The lens can change its focal length smoothly and rapidly in response to real-time distance detection, enabling fast and comfortable adaptation to different viewing distances without being constrained to discrete power values.
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
Enables accurate, real-time, and continuous presbyopia correction, improving user experience by maintaining stereo vision and reducing the need for user training, with high-speed processing and robust accuracy through parallelized algorithms.
Implementation Method 1
an image capturing subsystem of the eyes of the subject being corrected for presbyopia, comprising at least a camera and several light sources directed towards the eyes
Data Source
AI summary
Optoelectronic binocular instrument for the automatic correction of presbyopia and method for the binocular correction of the presbyopia. The instrument has two optoelectronic lenses (103, 110; 203, 204) and a capturing subsystem for taking images of the eye. By means of the pupil tracking, which performs the processing of the eye's images, the system determines the distance where the subject is looking at. The pupil tracking works at a very high speed, using a high-performance graphic processor and a highly parallelized algorithm for pupil tracking. The method consists of two phases. In the first one a calibration is accomplished, the subject is asked to look at targets at different distances and the size and position of the pupil is measured. In the second phase the correction is performed by the instrument, the system continuously captures and processes images to calculate the correction to apply and, finally, corrects the presbyopia by applying said correction.