Customized Spectacle Lens Design for Visual Stress Reduction
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Solution Overview
Problem
Existing visual stress-reducing spectacles lenses for non-presbyopic individuals have a uniformly fixed near portion power that does not account for individual needs, frame size, shape, or usage conditions, leading to inadequate visual stress reduction and discomfort.
Innovation Solution
A method to customize spectacles lenses by determining the contour and visual points for each user, allowing for adjustable optical power zones, including prismatic and accommodation-supporting measures, to match the lens design to the user's specific needs and usage scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a uniformly fixed near portion power is used in spectacles lenses, then the manufacturing process is simple and cost-effective, but the lens cannot be customized to individual needs, frame size, shape, or usage conditions, leading to inadequate visual stress reduction
Solution Approach 1:
The patent implements dynamic customization of the near portion power by determining optimal power values based on individual user parameters including frame size, shape, and usage conditions. The lens design transitions from a static fixed power to a dynamic customized power that adapts to each user's specific needs, thereby resolving the contradiction between adaptability and complexity through parameter-based personalization.
Solution Approach 2:
The invention changes the optical power parameter of the near portion based on multiple input parameters such as frame dimensions, lens shape, and usage scenarios. By calculating and adjusting the power value according to these varying parameters, the system achieves customized lens designs that improve visual stress reduction while maintaining a systematic approach to manage complexity.
2Adaptability or versatility
If a fixed near portion power is used in all spectacles lenses, then the manufacturing process remains standardized and efficient, but the lens fails to account for individual usage conditions such as frame size and shape
Solution Approach 1:
The patent applies preliminary action by pre-establishing a systematic method for determining customized near portion power based on frame size, shape, and usage conditions. This preliminary calculation framework allows manufacturers to prepare customized lens parameters before actual manufacturing, maintaining efficiency while achieving adaptability to individual usage scenarios.
Solution Approach 2:
The system maintains manufacturing standardization by using a structured parameter-based approach where standardized input data (frame dimensions, lens shape) are processed through a consistent calculation method to derive customized power values. This preserves ease of manufacture while achieving adaptability through parameter personalization.
3Reliability
If the near portion power is uniformly fixed, then the lens design is simple and quick to produce, but it does not reduce visual stress effectively for all non-presbyopic persons
Solution Approach 1:
The patent applies local quality by customizing the near portion power specifically for each user's visual needs rather than using a uniform design. The optimized power value is locally tailored to match individual frame characteristics and usage conditions, thereby improving visual stress reduction effectiveness while managing complexity through targeted personalization rather than complete redesign.
Solution Approach 2:
The system improves reliability by dynamically adjusting the near portion power parameter based on individual user parameters. This parameter optimization ensures effective visual stress reduction for each person while maintaining a systematic approach that prevents excessive complexity in the lens design process.
Data Source
AI summary
The invention is directed to a method for making a spectacle lens for a non-presbyopic person wherein the spectacle lens is a ready-to-wear lens and has at least one zone having an optical effect to reduce vision stress. In the method, at least one of the following is provided: the contour of the ready-to-wear spectacle lens and one or several visual points whereat the person looks through the ready-to-wear spectacle lens for one or several visual tasks in the near range. This method step is followed by setting at least one of: a design reference point of the zone, the extent of the zone, the optical effect within the zone based on the provided contour, and the visual points. The spectacle lens is then made with this zone.