Applications
- Optical fibers, which are used in endoscopes and telecommunications.
- Rain sensors to control automatic windscreen/windshield wipers.
- Another interesting application of total internal reflection is the spatial filtering of light.
- Prismatic binoculars use the principle of total internal reflections to get a very clear image
- Some multi-touch screens use frustrated total internal reflection in combination with a camera and appropriate software to pick up multiple targets.
- Gonioscopy to view the anatomical angle formed between the eye's cornea and iris.
- Gait analysis instrument, CatWalk, uses frustrated total internal reflection in combination with a high speed camera to capture and analyze footprints of laboratory rodents.
- Fingerprinting devices, which use frustrated total internal reflection in order to record an image of a person's fingerprint without the use of ink.
- Flashlights lenses.
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