Biophotonics is the application of optics and photonics to biology, at the level of basic research, diagnosis and biomedical intervention. It is a transdisciplinary field that is physics (optics, photonics), chemistry (spectroscopy, chromophores, nanomaterials), biology, biochemistry, medicine (DNA, proteins, cells, tissues, organisms) , engineering (instrumentation) and ethics (in medicine, biology, environment and research).