Magnification Device with Dual-Filtering UV Protection
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Solution Overview
Problem
Current optical magnification devices used in dental and medical procedures with UV LEDs pose a retinal hazard due to intense and collimated UV light, leading to eye damage, as existing safety glasses or goggles often provide inadequate protection and are cumbersome.
Innovation Solution
A magnification device with a housing containing an optical system and a dual-filtering system, where the first filter lens at the distal end and a second filter lens at the proximal end have specific optical densities to attenuate harmful electromagnetic radiation before it is magnified, ensuring safe levels of visible light transmission and preventing eye damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If safety glasses or goggles are used to filter UV light, then eye protection is improved, but the devices become cumbersome and uncomfortable
Solution Approach 1:
The patent combines the magnification device and eye protection function into a single integrated unit. The optical system includes magnification lenses for viewing and filter lenses for UV protection, both mounted in the same housing structure. This merging eliminates the need to wear separate safety glasses over magnification devices, resolving the contradiction between protection effectiveness and comfort/usability.
2Manufacturing precision
If magnification devices are used to view the work area, then precision is improved, but retinal damage risk increases due to concentrated light energy
Solution Approach 1:
The patent applies preliminary protective action by incorporating filter lenses that block harmful UV and infrared radiation before the light enters the magnification optical system. The filters are positioned to attenuate dangerous wavelengths before they can be concentrated and focused by the magnification lenses, thereby preventing retinal damage while preserving the precision benefits of magnification.
3Object-affected harmful factors
If filter lenses with high optical density are used to block UV radiation, then eye protection is improved, but visible light transmission decreases
Solution Approach 1:
The patent applies local quality by designing filter lenses with wavelength-selective properties. The filters are engineered to have high optical density specifically for harmful UV and infrared wavelengths while maintaining high transmission in the visible spectrum. This localized filtering approach blocks dangerous radiation without significantly reducing visible light transmission, resolving the contradiction between protection and illumination.
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 dual-filtering system effectively blocks harmful radiation, reducing the risk of eye damage while maintaining adequate visible light transmission, providing a safer and more comfortable option for professionals using magnification devices during procedures.
Implementation Method 1
chemical additives or dyes or thin films may be added to a filter (in the form of a lens), which may be formed of polycarbonate, glass, or other suitable material, to match, and consequently absorb, the wavelength and power of the source of LED radiation
Implementation Method 2
an optical system including one or more objective lenses mounted in the housing adjacent the distal open end, and one or more eye lenses mounted in the housing adjacent the proximal open end
Data Source
AI summary
A magnification device including a housing having a distal open end and a proximal open end is disclosed. The housing includes an optical system including one or more objective lenses adjacent the distal open end, and one or more eye lenses adjacent the proximal open end, the optical system produced a desired level of magnification; and a filtering system having first filter selectively filtering a first group of wavelengths and a second filter selective filtering a second group of wavelengths. The first and second filters having an optical density selected based on a magnification level of the optical system. A vision enhancing assembly including a carrier device and one or more magnification devices coupled to the carrier device is also disclosed, wherein the magnification devices include filters that have optical densities based on a magnification level.