Myopia Control Optical System with Segmented Spectral Transmission

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Solution Overview

Problem

Current solar lenses that protect eyes from harmful natural light wavelengths also diminish the beneficial effects of outdoor activities on slowing down myopia progression, as they filter out the beneficial light that increases retinal dopamine secretion.

Innovation Solution

An optical system with a specific transmission pattern that protects eyes from harmful wavelengths while maintaining or enhancing the benefits of outdoor activities by increasing retinal dopamine secretion, featuring a first zone with limited transmission to block harmful light, a second zone with higher transmission to increase beneficial light exposure, and a third zone with controlled average transmission to maintain pupil size and illuminance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If solar lenses are used to protect eyes from harmful natural light wavelengths, then eye protection from harmful light is improved, but the beneficial effects of outdoor activities on slowing down myopia progression are diminished

Engineering Contradiction:
Improveprotection from harmful light wavelengthsVSAvoideffectiveness in slowing down myopia progression
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The optical system divides the spectral transmission into multiple distinct zones (first zone with limited transmission for harmful wavelengths, second zone with high transmission for beneficial wavelengths, third zone with controlled transmission). This segmentation allows selective filtering of harmful light while preserving beneficial wavelengths that stimulate retinal dopamine secretion, thereby resolving the contradiction between eye protection and myopia control effectiveness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the spectrum are assigned different transmission qualities: the first zone has limited transmission to block harmful UV and blue light, while the second zone has high transmission (>75%) to allow beneficial visible light through. This local differentiation of transmission properties enables simultaneous achievement of eye protection and myopia progression control.

Inventive Principle:
Principle #3Local quality

2Object-affected harmful factors

If harmful light wavelengths are filtered out to protect the eyes, then eye protection is improved, but retinal dopamine secretion is reduced

Engineering Contradiction:
Improveblockage of harmful wavelengthsVSAvoidretinal dopamine secretion
Core Design Contradiction:
Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The transmission pattern is segmented into wavelength zones with different transmission characteristics. The second zone (446-477 nm) is specifically designed with high transmission to allow beneficial visible light wavelengths that stimulate retinal dopamine secretion, while the first zone blocks harmful wavelengths. This segmentation resolves the contradiction by selectively transmitting only the beneficial wavelengths needed for dopamine production.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The optical system changes the transmission parameter across different wavelength zones, with the second zone having average transmission greater than 75% to maximize beneficial light exposure and retinal dopamine secretion, while maintaining protection in other zones. This parameter optimization resolves the contradiction between filtering harmful light and maintaining dopamine secretion.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If transmission in the second zone is increased to enhance retinal dopamine secretion, then myopia progression control is improved, but harmful light exposure increases

Engineering Contradiction:
Improvemyopia progression controlVSAvoidexposure to harmful light
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The spectral transmission is segmented into distinct zones where the second zone has high transmission for beneficial wavelengths while the first zone maintains limited transmission to block harmful UV and blue light. This segmentation ensures that increased transmission in the second zone does not compromise eye protection, as the harmful wavelength ranges are separately controlled.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different local regions of the spectrum receive different transmission qualities: the second zone receives high transmission quality to maximize dopamine-stimulating light, while the first zone receives limited transmission quality to maintain protection. This local quality differentiation resolves the contradiction between enhancing myopia control and maintaining harmful light protection.

Inventive Principle:
Principle #3Local quality

4Reliability

If a specific transmission pattern is implemented to slow down myopia progression, then myopia control effectiveness is improved, but device complexity increases

Engineering Contradiction:
Improvemyopia progression controlVSAvoidtransmission pattern complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention achieves myopia control by optimizing transmission parameters across different wavelength zones, with the second zone having average transmission greater than 75%. This parameter-based approach allows the complex transmission pattern to be defined by relatively simple numerical criteria rather than requiring complex structural design, thereby resolving the contradiction between effectiveness and complexity.

Inventive Principle:
Principle #35Parameter changes

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 system effectively slows down myopia progression by increasing retinal dopamine secretion and pupil size, while protecting eyes from harmful light, thereby maintaining the benefits of outdoor activities on myopia progression.

Implementation Method 1

the wavelengths comprised in the second zone appear to increase the retinal Dopamine secretion that slow down myopia progression

Methodology Applied
Scientific EffectPhototransduction: Photoelectric Effect

Implementation Method 2

Solar lenses protect the eyes from the harmful effects of natural light but also appear to decrease the benefits of the outdoor activities on the myopia progression

Methodology Applied
Scientific EffectOptical absorption: Absorption (EM radiation)

Data Source

PatentEP2772794B1An myopia control optical system
Publication Date: 2018.06.13 ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
  • EP2772794B1 patent drawingFigure 1
  • EP2772794B1 patent drawing
  • EP2772794B1 patent drawing

AI summary

An optical system having a transmission pattern comprising at least a first zone Z1 extending from 380 nm to a first limit L1 between the first zone Z1 and a second zone Z2, and a third zone Z3 extending from a second limit L2 between the second zone Z2 and the third zone Z3 to 780 nm, wherein the first limit L1 is greater than or equal to 436 nm and the second limit L2 is greater than the first limit L1 and smaller than or equal to 487 nm; the average transmission values T1, T2, T3, in each zone Z1, Z2, Z3 are such as: T⁢2>T⁢1+T⁢3/2, with T1 the average transmission over the first zone Z1, T2 the average transmission over the second zone Z2, and T3 the average transmission over the third zone Z3, T1 and T3 being greater than or equal to 3% and smaller than or equal to 70%.