Microstructured Optical Laminates for Selective Harmful Light Attenuation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing optical films and laminates fail to effectively attenuate specific harmful light wavelengths that cause issues such as migraines, vertigo, and sleep deprivation due to photosensitivity and photophobia, necessitating improved light management solutions.

Innovation Solution

A laminate structure comprising multiple layers with microstructure patterns having predetermined periodicities and refractive indices, designed to selectively attenuate or divert unwanted light wavelengths through diffraction, reflection, and absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional optical films are used, then general light transmission is maintained, but specific harmful light wavelengths cannot be selectively attenuated

Engineering Contradiction:

Improveharmful light wavelengthsVSAvoidlaminate structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The optical system is divided into multiple functional layers including a base optical layer and a microstructure layer with periodic patterns. Each layer performs a specific function: the base layer provides general light transmission while the microstructure layer selectively attenuates harmful wavelengths through diffraction and interference effects.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent combines materials with different optical properties in a laminated structure. The base optical film is combined with a microstructure layer having specific refractive index patterns, creating a composite material system that achieves both general light transmission and selective wavelength attenuation.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If microstructure patterns are added to attenuate harmful light, then light management capability is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvelight wavelength attenuation capabilityVSAvoidmicrostructure formation process

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent controls the periodicity and dimensions of microstructure patterns to tune the diffraction and interference effects. By adjusting parameters such as pattern spacing, depth, and refractive index contrasts, specific wavelength ranges can be targeted for attenuation while maintaining manufacturability through standardized fabrication processes.

Inventive Principle:

Principle #35Parameter changes

3Illumination intensity

If multiple layers with different refractive indices are combined, then selective light attenuation is achieved, but device complexity increases

Engineering Contradiction:

Improveharmful light wavelength attenuationVSAvoidnumber of layers

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The microstructure layer introduces local variations in refractive index and optical path length through periodic patterns. This creates localized optical effects that selectively attenuate harmful wavelengths without requiring the entire optical system to be complex, as only the microstructure layer needs the periodic variation while other layers remain simple.

Inventive Principle:

Principle #3Local quality

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 laminate structure effectively reduces harmful light-induced health issues by selectively blocking or diverting specific wavelengths, enhancing visual comfort and reducing photophobia and other light-related discomfort.

Implementation Method 1

the microstructure pattern can be designed to attenuate multiple ranges of wavelengths of light to address visual health issues... the target ranges of wavelengths of light can be depressively reflected and/or diverted

Methodology Applied

Scientific EffectDiffraction: Diffraction

Implementation Method 2

the target ranges of wavelengths of light can be depressively reflected and/or diverted to prevent said harmful, undesired wavelength from reaching a viewer

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 3

a first microstructure layer including a first microstructure pattern formed on a first surface of the microstructure layer, a first microstructure material of the first microstructure layer having a first microstructure material refractive index

Methodology Applied

Scientific EffectAbsorption: Absorption (EM radiation)

Data Source

PatentUS12566285B2Method and apparatus for microstructured filters in laminates for light attenuation

Publication Date: 2026.03.03 ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)

AI summary

A laminate, includes: a first layer, a first material of the first layer having a first refractive index, the first layer including a first surface; a first microstructure layer including a first microstructure pattern formed on a first surface of the microstructure layer, a first microstructure material of the first microstructure layer having a first microstructure material refractive index, the first microstructure pattern having first repeating structures with a first predetermined periodicity, the microstructure layer being disposed on the first surface of the first layer; a second layer, a second material of the second layer having a second refractive index, the second layer being disposed adjacent to the first surface of the first microstructure layer; and a third layer, a third material of the third layer having a third refractive index, the third layer being disposed adjacent to the second layer on a side opposite the microstructure layer.