We design and manufacture all types of devices for visual inspection using light for:
- Document control and authentication
- Fluorescence in organisms
- Phosphorescence of materials
- Criminal investigation
Document validation
Visual inspection and control of documents is a process in which different types of documents such as paper money, stamps or official papers are thoroughly reviewed to verify their authenticity, accuracy and validity. During this inspection, details such as the quality of the printing, type of paper, signatures, stamps, visual identifiers, watermarks and any other element that may indicate the authenticity of the document are reviewed.
This visual inspection can be carried out as part of a quality verification process, legal validity, compliance with standards or regulations, etc.
It is important to carry out this inspection meticulously and accurately, as the authenticity of a document can be crucial in various contexts. To this end, we design special booths and custom light emitters to adapt to different methodologies.
The most common light sources, combined or separately, that we usually include in our booths or projectors for these tasks are: ultraviolet light for fluorescence or phosphorescence detection, infrared light for watermarks and IR printing, or daylight for color checking.
Fluorescence detection in organisms
Some living organisms, such as insects, plants, amphibians and fish, change colour and even ‘glow’ under certain types of light. This is called biofluorescence and is due to the fact that they possess certain chemical substances (fluorophores) that react to these wavelengths by absorbing that energy and re-emitting it at a different wavelength.
At UVINFRA we design projectors and light emitters in different light ranges that allow us to observe this effect without harming living beings.
Mineralogy and phosphorescence of materials
Furthermore, other materials can also be phosphorescent due to their composition. Some minerals react to light in such a way that, unlike fluorescence, the reaction lasts over time because the process between absorbing light energy and re-emitting it is not immediate.
This effect is used in some paints using pigments composed of these substances.
Our visible and ultraviolet light sources enable the observation of minerals and the inspection of materials to detect impurities or the contribution of such materials.
Criminology and forensic science
In police investigations, it is essential to be able to reliably detect traces that can lead to evidence. Different ultraviolet and infrared light waves allow the identification of fingerprints or some bodily fluids that would be impossible to detect with the naked eye.
