Lamp, especially a surgery lamp, with at least two bulbs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 3, 2003
Grant Date -
N/A
app pub date -
Oct 3, 2000
filing date -
Nov 23, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To achieve great security against failure in lamps for medical applications, especially lamps for surgery, two electric bulbs are placed each in a concave mirror of ellipsoidal shape as part of a reflector, the two concave mirrors having focal points which are aligned with one another along an optical axis. The concave mirror provided to serve as the main lamp is configured as a ring reflector, while the concave mirror designed to operate as a reserve lamp closes off the reflector on the side facing away from the direction of emergence of the light. Thus, in the event of a change from main lamp operation to reserve lamp operation, the illuminated field is maintained at least approximately in its size and the location does not change (X and Y directions).
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