Patent ID: 8657862

Claim:
A light system for medical photodynamic applications, comprising an incoherent light source emitting light with a power, a light guide having a distal end and an entrance interface, said entrance interface and said light source having a position relative to one another and being able to be positioned relative to one another, a luminous power meter for measuring a luminous power emitted at said distal end of said light guide, a motorized positioning unit for positioning said entrance interface and said light source relative to one another, a control unit controlling said positioning unit as a function of said luminous power measured by said luminous power meter, an operating unit for receiving real-time input from a user indicating the user's tolerance to the luminous power and for varying the luminous power based on said real-time input from said user, and an input unit that receives an indication of a total radiation dose that is to be emitted from said distal end of said light guide, said total irradiation dose being a function of both irradiation time and luminous power, said indication of a total irradiation dose being used to continuously calculate and adjust the irradiation time as a function of the power of said light source, and said position of said entrance interface of said light guide and of said light source relative to one another.