Tunable Electromagnetic Radiation Source for Limited Range Visibility
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Solution Overview
Problem
There is a need for sources of electromagnetic radiation with limited range to mitigate issues related to undesired visibility or reach of light, particularly in urban environments and specific situations like nature observation or military operations, where visibility or communication requires light that is not visible to others.
Innovation Solution
A tunable source of electromagnetic radiation that adjusts its wavelength to correspond with absorption lines of atoms or molecules present in the medium through which it propagates, using a control element and arrangements for determining the desired wavelength, such as measuring and imaging means, to ensure limited range and reduced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a source of electromagnetic radiation is used to provide visibility or communication, then the light can be seen or transmitted, but the light becomes visible to others and causes light pollution
Solution Approach 1:
The patent applies local quality by selecting a specific wavelength that corresponds to an absorption line of oxygen molecules in the atmosphere. This creates a localized property where the light is absorbed only at certain distances and conditions, making it invisible beyond a limited range while maintaining visibility within the desired area.
Solution Approach 2:
The invention changes the wavelength parameter of the electromagnetic radiation to match the absorption characteristics of atmospheric oxygen. By tuning the source to emit at this specific wavelength, the light is absorbed by oxygen molecules after traveling a limited distance, effectively controlling its visibility range and eliminating light pollution in distant areas.
2Length of stationary object
If the wavelength of electromagnetic radiation is tuned to an absorption line, then the range is limited through absorption, but the system becomes more complex requiring control elements and wavelength determination
Solution Approach 1:
The system employs self-service by using the natural absorption characteristics of atmospheric oxygen itself to limit the range. The oxygen molecules in the atmosphere act as the limiting mechanism, eliminating the need for artificial range-limiting devices or complex control systems while achieving the desired limited range effect.
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 provides lighting that is not visible to unwanted parties or distances, reducing light pollution and allowing controlled visibility and reach of electromagnetic radiation, effectively addressing the need for limited-range lighting sources.
Implementation Method 1
tuning the source of electromagnetic radiation with a control element configured to tune the wavelength of the source of electromagnetic radiation to a desired wavelength corresponding to an absorption line of an atom or a molecule or other species present in the medium
Data Source
AI summary
A limited range source of electromagnetic radiation and a radiation method, includes a tunable source of electromagnetic radiation; and a control element configured to tune the wavelength of the source of electromagnetic radiation to a desired wavelength corresponding to an absorption line of an atom or a molecule or other species present in the medium through which the electromagnetic radiation is to propagate; wherein the control element is configured to receive data relating to the desired wavelength.