Selective Photochromic Lens with Reflective Coating
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Solution Overview
Problem
Conventional photochromic lenses change color uniformly when exposed to ultraviolet radiation, making it impossible to create portions that remain unchanged.
Innovation Solution
A photochromic lens design incorporating both photochromic and non-photochromic portions, where the non-photochromic portion is coated with a reflective multilayer coating to prevent activation of the photochromic dyes, allowing selective areas to change color while others remain unchanged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire lens is made photochromic, then the lens provides uniform UV protection and color change, but it becomes impossible to create portions that remain unchanged for design or functional purposes
Solution Approach 1:
The lens is divided into distinct photochromic and non-photochromic portions, allowing different functional zones within a single lens structure. This segmentation enables design customization while maintaining the photochromic effect in specific areas where needed.
Solution Approach 2:
Different portions of the lens have different optical properties - some areas are photochromic while others are non-photochromic. This local differentiation allows the lens to provide UV protection and color change in specific zones while maintaining clarity in other zones for design or functional purposes.
2Reliability
If photochromic dyes are used throughout the lens, then UV radiation activates the dyes for protection, but unwanted color changes occur due to glare or ambient radiation in areas where color change is not desired
Solution Approach 1:
The lens is divided into distinct photochromic and non-photochromic portions, allowing different functional zones within a single lens structure. This segmentation enables design customization while maintaining the photochromic effect in specific areas where needed.
Solution Approach 2:
Different portions of the lens have different optical properties - some areas are photochromic while others are non-photochromic. This local differentiation allows the lens to provide UV protection and color change in specific zones while maintaining clarity in other zones for design or functional purposes.
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
Enables the creation of lenses with customizable designs that only change color in response to specific electromagnetic radiation, preventing unwanted color changes due to glare or ambient radiation.
Implementation Method 1
the non-photochromic portion is coated with a reflective multilayer coating to prevent activation of the photochromic dyes
Implementation Method 2
photochromic dyes are adapted to pass from an unactivated state to an activated state, wherein said activated state of said photochromic dyes requires the photochromic dyes to change when hit by ultraviolet radiation
Data Source
AI summary
A photochromic lens for glasses, including photochromic dyes, wherein the photochromic dyes are suitable for passing from a not activated state to an activated state. The activated state of the photochromic dyes provides that photochromic dyes change color when hit by an electromagnetic radiation. The photochromic lens includes at least a first portion and at least a second portion, wherein the first portion has a reflecting material coating reflecting the electromagnetic radiation, and the second portion is devoid of the coating. The photochromic lens has a first surface with at least a first portion and at least a second portion, wherein the first surface faces outward from the glasses, outward meaning a direction with respect to the photochromic lens mounted on a glasses frame.