Pulsed Light Eyewear for Myopia Control
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Solution Overview
Problem
Current solutions fail to effectively control myopia, particularly in the increasing global population of myopic individuals, and do not adequately manage blue light exposure which can contribute to vision deficiencies and other conditions like migraines and sleep disorders.
Innovation Solution
An optical system integrated into eyewear or spectacle lenses that actively controls light intensity by emitting pulses of light with specific spectral characteristics and switching between band-cut and band-pass filter states based on ambient light conditions, using LEDs and sensors to adjust light transmission in the blue light spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional eyewear without active light control is used, then the device complexity is low, but the ability to control blue light exposure and manage myopia progression is insufficient
Solution Approach 1:
The patent implements dynamic light control through an illumination system that emits light pulses with variable intensity and duration, controlled by a microcontroller. The system dynamically adjusts blue light exposure based on pre-determined time functions and packet structures, transforming static eyewear into an active myopia control device
Solution Approach 2:
The illumination system employs periodic light emission in the form of pulses organized in packets with specific intervals. Each packet contains multiple pulses alternating between first light (450-495nm) and second light (620-750nm), creating a rhythmic stimulation pattern that targets intrinsically photosensitive ganglion cells for myopia control
2Duration of action of moving object
If continuous blue light emission is used for myopia control, then the light exposure duration is increased, but this may cause discomfort or migraines in sensitive individuals
Solution Approach 1:
The system uses periodic pulsed light emission instead of continuous illumination. Light is delivered in discrete packets with intervals between them, and within each packet, pulses alternate between blue light (first light) and red light (second light). This periodic structure provides therapeutic blue light exposure while allowing recovery periods that prevent overstimulation and associated discomfort
Solution Approach 2:
The patent introduces a second light source emitting red light (620-750nm) as an intermediary between blue light pulses. This red light acts as a buffer or mediator that alternates with blue light pulses, potentially reducing the cumulative stress of continuous blue light exposure while maintaining the therapeutic effect on intrinsically photosensitive ganglion cells
3Manufacturing precision
If the illumination system emits both first light (450-495nm) and second light (620-750nm) alternately, then the spectral control precision is improved, but the device complexity increases due to multiple light sources
Solution Approach 1:
The illumination system is segmented into distinct functional modules: a first light source (450-495nm) and a second light source (620-750nm), each with specific spectral characteristics. This segmentation allows independent optimization of each light source's emission properties, achieving precise spectral control while maintaining modularity that simplifies overall system design and manufacturing
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 system enhances myopia control by varying blue light exposure, potentially reducing the risk of myopia progression and alleviating symptoms associated with blue light sensitivity, while also addressing conditions like migraines and sleep disorders by manipulating intrinsic photosensitive ganglion cells.
Implementation Method 1
a light source configured to emit a first light. The first light may include a power spectrum having full width at half maximum (FWHM) of less than 100 nm
Implementation Method 2
switching between band-cut and band-pass filter states based on ambient light conditions, using LEDs and sensors to adjust light transmission in the blue light spectrum
Data Source
AI summary
An illumination system adapted for an eyewear that includes a light source configured to emit a first light including a power spectrum having full width at half maximum of less than 100 nm in a first range of wavelengths and a second light including a power spectrum having full width at half maximum of less than 100 nm in a second range of wavelengths, the power spectrum of the first light and the power spectrum of the second light differ from each other, and the light source is further configured to emit pulses of light with a pre-determined time function. The pre-determined time function comprises a plurality of packets, each packet of the plurality of packets being followed by a packet interval, and each packet including a pulse alternation between a pulse of the first light and a pulse of the second light.