PBMT Device Blue Light Blocking Filter for Ocular Safety
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Solution Overview
Problem
Traditional photobiomodulation therapy (PBMT) systems fail to effectively block blue light pollution during treatment of ocular disorders, risking additional optical problems and irreversible photochemical damage to the eye, especially when used by patients outside a clinical setting.
Innovation Solution
A PBMT device configured for direct placement over the patient's eye socket, equipped with a controller and light delivery system that generates light while preventing blue light entry, using components like Mylar filters and opaque housing to ensure blue light is blocked, allowing treatment regardless of eye movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional PBMT allows white light to reach the eye during treatment, then the therapy can treat ocular disorders, but blue light pollution can cause irreversible photochemical damage to the eye
Solution Approach 1:
The patent introduces an intermediary blue light blocking filter between the light source and the patient's eye. This filter selectively blocks harmful blue light wavelengths (415-455 nm) while allowing beneficial red and infrared wavelengths to pass through, enabling safe PBMT treatment without direct contact between the light source and the eye
Solution Approach 2:
The patent segments the white light spectrum by using a blue light blocking filter that separates harmful blue wavelengths from beneficial red and infrared wavelengths. This segmentation allows the therapy to utilize only the beneficial portions of the spectrum while excluding the harmful components
2Object-affected harmful factors
If a blue light blocking filter is added to the PBMT device, then blue light pollution is reduced, but the device complexity increases
Solution Approach 1:
The patent employs a blue light blocking filter that utilizes optical property changes based on wavelength. The filter is designed to absorb or reflect blue light wavelengths (415-455 nm) while transmitting red and infrared wavelengths, achieving spectral selection through material optical properties rather than complex mechanical or electronic systems
3Ease of operation
If the PBMT device is placed directly over the eye socket, then treatment can continue regardless of eye movement, but blue light may still enter the eye from the sides
Solution Approach 1:
The patent uses a flexible blue light blocking filter that can conform to the contours of the eye socket. This flexible filter creates a complete barrier around the eye opening, preventing blue light from entering from any direction while allowing the device to accommodate natural eye movements and socket geometry
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 solution effectively reduces light pollution during PBMT, protecting the eye from blue light damage and enabling safe, effective treatment of ocular disorders both in clinics and at home by ensuring only beneficial wavelengths reach the eye.
Implementation Method 1
using components like Mylar filters and opaque housing to ensure blue light is blocked
Implementation Method 2
A PBMT device configured for direct placement over the patient's eye socket, equipped with a controller and light delivery system that generates light
Data Source
AI summary
Disorders of the eye can be treated by photobiomodulation therapy (PBMT) delivered by a PBMT device. The PBMT device can be configured for placement directly over a patient's eye socket to deliver light into the patient's eye regardless of a position of the patient's eye, while preventing blue light from entering the patient's eye (e.g., due to a filter within the PBMT device and/or an opacity of the housing of the PBMT device). The PBMT device can be powered by a controller.