Variable Aperture Ophthalmic Lens With Liquid Crystal Insert
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Solution Overview
Problem
Traditional ophthalmic lenses with static apertures can provide improved image clarity for detailed tasks but result in tunnel vision and reduced peripheral content when not needed, limiting user experience.
Innovation Solution
Development of a variable aperture ophthalmic lens with a liquid crystal insert that can change from opaque to transparent, allowing for wearer-controlled adjustment of optic power through an energy source and electronic or passive devices, enabling dynamic aperture control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a static masking layer creates a small pinhole aperture to improve image clarity, then the clarity of the detailed image is improved, but the user experiences tunnel vision and reduced peripheral content
Solution Approach 1:
The patent applies the dynamics principle by transforming the static aperture into a dynamic, variable aperture that can change size on demand. The liquid crystal insert allows the aperture to transition between small (for detailed viewing) and large (for peripheral viewing) states, enabling the lens to adapt to different viewing needs and eliminate tunnel vision effects.
Solution Approach 2:
The patent applies parameter changes by using liquid crystal material that changes its optical properties (from transparent to opaque) in response to electrical signals. This allows the aperture size parameter to be dynamically adjusted, enabling the lens to switch between high-clarity detailed viewing mode and wide-field peripheral viewing mode.
2Adaptability or versatility
If a variable aperture insert with liquid crystal is incorporated into the lens, then dynamic aperture control is achieved, but the device complexity increases
Solution Approach 1:
The patent applies the nested doll principle by embedding the liquid crystal insert within the lens structure. The variable aperture mechanism is nested inside the lens body, with the liquid crystal layer positioned between the lens surfaces. This integration minimizes the overall device complexity while maintaining the variable aperture functionality.
Solution Approach 2:
The patent applies the merging principle by combining the variable aperture functionality with the existing lens structure. The liquid crystal insert is integrated into the lens rather than being a separate component, and the electrical control system is merged with the lens assembly, reducing the number of discrete parts and simplifying the overall device.
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
Enhances image clarity and depth of field by allowing users to switch between detailed and normal vision modes, reducing tunnel vision effects and improving peripheral content visibility.
Implementation Method 1
a variable aperture ophthalmic lens with a liquid crystal insert that can change from opaque to transparent
Data Source
AI summary
This invention discloses methods and apparatus for providing a variable aperture insert into a lens. A liquid crystal layer may be used to provide a variable aperture function and in some examples. In other examples, electrochromic, photochromic, liquid meniscus or electroactive elastomeric devices may form a light blocking element of a variable aperture insert. In some examples, an ophthalmic lens is cast-molded from a silicone hydrogel including a variable aperture insert.