Rewritable Liquid Crystal Lens for Adaptive Optical Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lenses, both ophthalmic and technical, face challenges in adapting to changing optical requirements due to age-related changes, environmental conditions, and other factors, leading to increased waste and costs from frequent replacements.
Innovation Solution
The development of rewriteable lenses using liquid crystals that can be reconfigured by exposure to UV light or heat, allowing for modification of refractive index and optical properties without physical alteration, enabling reuse and adaptation to new prescriptions or requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenses are replaced frequently to adapt to changing optical requirements, then adaptability to new prescriptions is improved, but waste and costs increase
Solution Approach 1:
The lens incorporates liquid crystal material that allows dynamic reconfiguration of optical power through UV light exposure or heat application. The lens transitions from a static, fixed-power design to a dynamic system where optical properties can be modified multiple times without physical replacement, directly resolving the contradiction between adaptability and waste.
Solution Approach 2:
The patent changes the physical state and optical parameters of the liquid crystal material within the lens to modify refractive index and optical power. By controlling parameters such as temperature and UV exposure, the lens can be rewritten with different prescriptions, eliminating the need for frequent replacements and reducing waste.
2Adaptability or versatility
If lenses are replaced frequently to adapt to changing optical requirements, then adaptability to new prescriptions is improved, but costs increase
Solution Approach 1:
The liquid crystal-based dynamic lens allows a single lens to serve multiple prescriptions over time through reversible reconfiguration. This eliminates the need to purchase multiple lenses for different optical requirements, directly reducing the quantity of lenses required and associated costs.
Solution Approach 2:
The lens is designed to perform multiple functions by accommodating different optical prescriptions through its reconfigurable liquid crystal material. One lens serves multiple purposes across different life stages and conditions, replacing the need for multiple specialized lenses and reducing overall cost.
3Adaptability or versatility
If lenses are replaced frequently to adapt to changing optical requirements, then adaptability to new prescriptions is improved, but time loss from uninstallation and reinstallation increases
Solution Approach 1:
The lens enables dynamic adjustment of optical power through in-place reconfiguration using UV light or heat, eliminating the need for physical uninstallation and reinstallation. Users can change prescriptions while the lens remains in position, directly reducing time loss associated with lens replacement.
4Ease of manufacture
If fixed power lenses are used, then manufacturing simplicity is maintained, but adaptability to changing visual performance needs deteriorates
Solution Approach 1:
The lens combines conventional lens materials with liquid crystal material to create a composite structure. This maintains the manufacturing simplicity of traditional lenses while adding the adaptability of liquid crystal reconfiguration, resolving the contradiction between ease of manufacture and adaptability to changing needs.
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
This solution reduces waste and costs by allowing lenses to be rewritten multiple times, maintaining constant optical properties under typical conditions, and eliminating the need for physical modifications or additional surgeries, thus enhancing customer satisfaction and operational efficiency.
Implementation Method 1
The lens may be rewritten by applying a UV light source to the lens in a second or later state
Implementation Method 2
The lens may be erased by applying heat to the lens
Implementation Method 3
The lens may be rewritten by applying a UV light source to the lens... which may result in a different spatial index distribution
Data Source
AI summary
Methods for lens configuration are disclosed. A method includes erasing a lens by heating the lens to a defined erasure temperature and writing a refractive index spatial distribution in the lens using an exposure pattern of directed ultraviolet (UV) light. The lens may be used as an ophthalmic lens or a lens used in industry. The lens comprises a rewriteable material, including, for example, liquid crystals. The lens may be erased using heat of a defined temperature. The lens may be rewritten by applying other exposure patterns to the lens using UV light.