A treatment device which uses cold red and infrared radiation for the photodynamic stimulation of cells, especially cells of human tissue. The described device produces a constant energy radiation by the use of semiconductor and/or laser diodes, which furthermore radiate light in several separate wavelengths...http://www.google.com.au/patents/US7033381?utm_source=gb-gplus-sharePatent US7033381 - Photodynamic stimulation device and method
