Apparatus for an efficient photodynamic treatment

An apparatus for an efficient simultaneous photodynamic and hyperthermic treatment, said apparatus having an optical axis, said apparatus comprising:

• a. a lamp for emitting a narrow beam light with half angle divergence of up to 10.degree., having an intensity of at least 20 mW/nm of red radiation in the spectral region of 600 to 750 nm and at least 2 mW/nm of infrared radiation in the spectral region of 1100 to 1700 nm, said lamp generating heat when emitting said beam light;
• b. a "hot" mirror, comprising a hard, all-dielectric filter coating deposited on a borosilicate glass, having a transmittance of at least 60% between 600 and 750 nm and at least 5% between 1200 and 1700 nm, while reflecting the radiation between 750 and 1200 nm;
• c. a glass lens system, optionally having an anti-reflection coating;
• d. a dichroic filter made of a hard, all-dielectric coating deposited on glass, having at least 60% transmittance above 600 nm while having a negligible transmittance below 600 nm;
• e. a glass fiber optics bundle having a diameter between 1 and 12 mm as a separate unit or as part of an endoscope;
• said elements a-e being aligned along the optical axis of the apparatus;
• and
• f. an effective air-cooling system to decrease the internal heating of the apparatus, which provides an internal temperature in the apparatus below a maximum temperature of 50.degree. C.