A film consisting of a fine powder of zinc oxide and titanium oxide and an inorganic binder is formed on the outer surface of a light source. The fine powder serves as an absorbent for ultraviolet radiation emitted from the light source. The film is formed on the outer surface by spraying a coating agent...http://www.google.es/patents/US5051650?utm_source=gb-gplus-sharePatente US5051650 - Ultraviolet-suppressed light source, coating agent used in the same, and method for manufacturing the same
Ultraviolet-suppressed light source, coating agent used in the same, and ...
