Surgical light apparatus with improved cooling

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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Details

F21V 29/00 (2006.01) F21S 8/00 (2006.01) F21V 7/09 (2006.01) F21V 9/04 (2006.01) F21V 14/02 (2006.01) F21V 21/40 (2006.01)

Patent

CA 2325532

A surgical light apparatus (30) has a light source (68, 70) and an enclosure surrounding the light source (68, 70). The enclosure includes a reflector (72) and a lens (62) substantially transparent to visible light. The light source (68, 70) generates visible light and heat energy radiation. The surgical light apparatus (30) includes at least one filter element (12) formed at least in part from a material that is substantially transparent to at least a portion of visible light radiation and that substantially blocks transmission of heat energy radiation. The one or more filter elements (12) are coupled to the enclosure and configured to block transmission of heat energy radiation from the light source to the reflector substantially over a 360° field of view about a longitudinal axis through the light source. The at least one filter element (12) includes a first end longitudinally spaced from a second end and is configured to define at least one gap (14) between the first and second ends.

Un appareil d'éclairage chirurgical (30) comprend une source d'éclairage (68, 70) ainsi qu'un boîtier entourant la source d'éclairage (68, 70). Le boîtier comprend un réflecteur (72) et une lentille (62) sensiblement transparente à la lumière visible. La source d'éclairage (68, 70) génère de la lumière visible et un rayonnement d'énergie thermique. L'appareil d'éclairage chirurgical (30) comprend au moins un élément filtrant (12) constitué au moins en partie d'un matériau sensiblement transparent à au moins une partie du rayonnement de la lumière visible et bloquant sensiblement la transmission du rayonnement d'énergie thermique. Le ou les éléments filtrants (12) sont couplés au boîtier et configurés pour bloquer la transmission du rayonnement d'énergie thermique provenant de la source d'éclairage vers le réflecteur sensiblement sur un champ visuel de 360 DEG autour d'un axe longitudinal à travers la source de lumière. L'élément filtrant (12) au moins comprend une première extrémité espacée longitudinalement d'une seconde extrémité et il est configuré pour définir au moins un espace (14) entre les première et seconde extrémités.

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