I used a PWM dimmer, diodes with different wavelengths, and lenses for those diodes ranging from 15 to 45 degrees. But you can experiment.
I used a PWM dimmer, diodes with different wavelengths, and lenses for those diodes ranging from 15 to 45 degrees. But you can experiment. Original research paper: https://web.archive.org/web/20221219003214/https://blog.acolyer.org/2019/10/15/invisible-mask/ By the way, in theory, this system could even be installed on a car's license plate. But I didn't tell you any of that. This is all just theoretical research. If you're planning to create a similar device at home, make sure to wear safety glasses (red IR glasses)! Working with these powerful diodes can easily lead to retinal burns! #p…
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