Multi-focal Eyewear with Segmented Lenses for Vision Correction
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Solution Overview
Problem
Current multi-focal eyewear designs do not effectively address the need for customized correction of both primary and secondary vision issues in both eyes, particularly in terms of astigmatism and distance/near vision, with existing lenses not optimally integrated into a frame that efficiently transfers load for comfort and functionality.
Innovation Solution
The multi-focal eyewear comprises a frame with customized dexter and sinister lenses, each consisting of a primary lens and two secondary lenses, specifically designed to correct primary and secondary vision issues, with power and segment span determinations based on patient examination, ensuring optimal positioning and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If customized multi-focal lenses are designed to correct both primary and secondary vision issues in both eyes, then vision correction effectiveness is improved, but device complexity increases
Solution Approach 1:
Each lens is divided into multiple focal segments: a primary lens for distance vision and two secondary lenses for near vision at different focal lengths. This segmentation allows simultaneous correction of multiple vision issues (astigmatism, presbyopia, hyperopia) within a single lens structure, resolving the contradiction between comprehensive vision correction and device complexity.
Solution Approach 2:
Different regions of the lens are assigned different optical properties: the primary lens portion corrects distance vision and astigmatism, while the secondary lens portions correct near vision at different focal lengths. This local differentiation enables multiple vision corrections without requiring separate lenses for each function, thereby managing complexity while improving correction effectiveness.
2Ease of operation
If a mechanical frame is used to securely mount lenses for comfort and load distribution, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The frame structure integrates multiple functions into a single unified design: it provides structural support, secures the multi-focal lenses in precise positions, distributes mechanical load across the eyes, and maintains proper optical alignment. This merging of functions achieves ease of operation without proportionally increasing device complexity.
Solution Approach 2:
The mechanical frame serves multiple purposes simultaneously: it acts as a support structure, a mounting mechanism, a load-distributing element, and an alignment guide for the lenses. This multi-functionality improves ease of operation while minimizing the need for additional separate components, thereby managing overall device complexity.
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 eyewear provides comprehensive vision correction for both eyes, addressing astigmatism and distance/near vision issues, with a mechanical frame that securely mounts lenses for improved comfort and load distribution, enhancing overall vision improvement.
Implementation Method 1
The dexter lens is a multi-focal lens comprising a dexter primary lens and a dexter inferior secondary lens. The sinister lens is a multi-focal lens comprising a sinister primary lens and a sinister inferior secondary lens.
Data Source
AI summary
The multi-focal eyewear is a set of eyeglasses. The multi-focal eyewear is a prescription medical device used to correct and improve the vision of a patient. The multi-focal eyewear comprises an eyeglasses frame, a dexter lens, and a sinister lens. The dexter lens and the sinister lens mount in the eyeglasses frame. The dexter lens corrects the vision in the dexter eye of the patient. The sinister lens corrects the vision in the sinister eye of the patient. The dexter lens is a multi-focal lens. The sinister lens is a multi-focal lens.