Three-State Optical Article With Membrane-Controlled Power Variation
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Solution Overview
Problem
Existing optical lenses face challenges in providing a large field of view with a large range of power variation while maintaining structural simplicity, failing to adequately correct evolutive myopia or presbyopia across a wide field.
Innovation Solution
An optical article with a hollow chamber separated by a deformable membrane and a separator, filled with fluids of different optical properties, allowing switching between three states to achieve varying optical functions across a full or narrow field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a deformable membrane separates two liquids with different refractive indices to provide variable lens power, then optical power variation is achieved, but the field of view is limited when large power modification range is required
Solution Approach 1:
The optical lens is segmented into multiple independent liquid chambers (first liquid chamber and second liquid chamber) separated by a membrane. Each chamber can be independently actuated to provide different optical power variations. This segmentation allows the system to achieve large overall power modification range by combining the effects of multiple chambers while maintaining a large field of view, as each chamber can be optimized for its specific function.
Solution Approach 2:
Different regions of the optical lens have different optical properties through the use of multiple liquid chambers with different refractive indices. The first liquid chamber provides a first optical power variation while the second liquid chamber provides a second optical power variation. This local differentiation of optical properties enables simultaneous achievement of large power variation range and large field of view by optimizing each region's contribution.
2Adaptability or versatility
If the membrane deformation width is limited by lens thickness to achieve large optical power variation, then power range is improved, but the lens can only provide correction over a part of the lens field
Solution Approach 1:
The lens is divided into multiple liquid chambers that can be independently controlled. This segmentation allows the system to achieve large optical power variation through the combined effect of multiple chambers rather than relying on a single membrane's deformation width, thereby maintaining full lens field coverage.
Solution Approach 2:
The optical lens system performs multiple functions simultaneously by incorporating multiple liquid chambers with different refractive indices. The system can provide both large optical power variation and full field of view coverage, making it universally applicable to correct both evolutive myopia and presbyopia/hyperopia across the entire lens field.
3Device complexity
If a single liquid chamber is used to provide variable optical power, then the structure remains simple, but the lens cannot provide both large field of view and large power variation
Solution Approach 1:
The lens is segmented into multiple liquid chambers separated by a membrane, with each chamber independently controllable. This segmentation enables the system to achieve large optical power variation and large field of view simultaneously, overcoming the limitations of a single-chamber design while maintaining reasonable structural simplicity through the use of a single separating membrane.
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 optical article provides a variable optical power across a large field of view with significant power variation, effectively correcting evolutive myopia or presbyopia through multiple states, maintaining structural simplicity.
Implementation Method 1
a deformable membrane separating the hollow chamber into a first cavity extending towards the first surface of the outer wall and a second cavity extending towards the second surface of the outer wall, the first cavity being filled with a first fluid having a first optical property and the second cavity being filled with a second fluid having a second optical property
Data Source
AI summary
The disclosure relates to an optical article which comprises a hollow chamber and a separator separating the hollow chamber into a first subspace and a second subspace.The separator comprises an aperture.The optical article comprises a deformable membrane, attached, in the second subspace, along a closed line surrounding the aperture.The optical article is switchable, by deformation of the membrane, between at least three states (ST1, ST2, ST3).Each state corresponds to a different optical function.The disclosure also comprises a corresponding method for switching said optical article between at least two of the three states.