An operating theatre lamp, for lighting a site of an operation from above, comprises at least one light source, followed by a reflector arrangement (3) which concentrates the light beams issuing from the light source on the site of the operation and by at least one infrared filter (41) which absorbs...http://www.google.fr/patents/US5199785?utm_source=gb-gplus-shareBrevet US5199785 - Operating theater lamp
