Protective Goggles with Spectral Filters and Image Projection
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Solution Overview
Problem
Current eye protection methods, such as glasses with colored or multilayer filters, are inadequate for protecting against high luminance sources like multispectral lasers and continuous spectra, and are cumbersome to choose and maintain, especially for workers exposed to varying radiation sources.
Innovation Solution
A device with opaque screens in goggles or masks, equipped with miniaturized optical components and image acquisition/restitution systems, providing real-time image projection to the user while blocking harmful radiation and projections, and featuring adjustable optics for clear vision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If colored filters or multilayer filters are used in protective glasses, then protection against specific laser wavelengths is improved, but protection against multispectral sources and continuous spectra becomes ineffective
Solution Approach 1:
The patent applies universality by designing protective glasses that can handle multiple spectral ranges simultaneously. The system uses a first optical filter for visible light and a second optical filter for infrared radiation, allowing a single device to protect against both visible and infrared radiation from various sources including lasers, arc lamps, and welding arcs.
Solution Approach 2:
The patent applies segmentation by dividing the protection system into separate filter components, each optimized for specific spectral ranges. The visible light filter and infrared filter are distinct elements that work together, allowing independent optimization for each spectral band while providing comprehensive protection.
2Reliability
If opaque screens are used to block optical radiation, then protection against radiation is improved, but visibility of the observed scene deteriorates
Solution Approach 1:
The patent applies local quality by making the filters spectrally selective rather than uniformly opaque. The first optical filter transmits visible light while blocking harmful visible radiation, and the second optical filter transmits specific infrared wavelengths while blocking harmful infrared radiation. This allows protection in harmful spectral regions while maintaining transparency in useful regions.
Solution Approach 2:
The patent applies parameter changes by utilizing different spectral transmission properties of the filters. The filters are designed with specific transmission characteristics that allow useful radiation to pass through while blocking harmful radiation, changing the spectral composition rather than simply reducing overall intensity.
3Adaptability or versatility
If multiple protective glasses are selected for different radiation sources, then protection coverage is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The patent applies universality by creating a single protective glass design that covers multiple radiation types and sources. The combination of visible light filter and infrared filter provides protection against lasers, arc lamps, welding arcs, and other sources emitting in both visible and infrared ranges, eliminating the need for multiple specialized glasses.
Solution Approach 2:
The patent applies merging by combining multiple protection functions into a single device. Instead of requiring separate glasses for visible light protection and infrared protection, the invention integrates both filter types into one pair of glasses, simplifying selection and maintenance while providing comprehensive protection.
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
Effectively protects eyes from optical radiation and solid/liquid projections, simplifies the selection and maintenance of protective gear by providing real-time image feedback, and enhances visibility for visually impaired individuals.
Implementation Method 1
a first optical filter, intended to block harmful radiation in the visible range and transmit useful light in the visible range
Implementation Method 2
a second optical filter, intended to block harmful radiation in the infrared range and transmit useful radiation in the infrared range
Implementation Method 3
characterized in that the optical system is provided with a reflection system which makes it possible to direct the radiation blocked by the first optical filter and/or by the second optical filter onto the screens
Data Source
Figure 1~2
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AI summary
This device comprises for example two screens (20, 22) which are opaque to radiation and resistant to spray and are suitable for preventing the radiation and spray from reaching the eyes (4, 6) of a user, and a device (24) for acquiring an image of a scene (8) and restoring the image to the user, comprising at least one image-forming lens (26), connected rigidly to the screen (20) and associated with an imaging device (28) for acquiring the image of the scene (8), and at least one restoring device (30) for restoring the acquired image to the user. According to the invention, this restoring device comprises a device for projecting an image of the scene into the eye of the user.