Surgical light with touchless switch
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United States of America Patent
Stats
-
Jun 10, 1997
Grant Date -
N/A
app pub date -
Aug 24, 1994
filing date -
Aug 24, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An operatory light fixture having a touchless switch operatively connected to a lamp disclosed. The touchless switch is constructed to detect a user's hand when positioned in a command location relative to the touchless switch and to respond thereto by operating the lamp. In a preferred embodiment, the touchless switch is an active infrared-type switch, comprising means for emitting infrared light toward a command location, means for detecting infrared light reflected from an object such as a hand which is positioned at or near the command location, and relay means responsively connected to the detection means and operatively connected to the lamp. In another preferred embodiment, the touchless switch includes means for discriminating a true signal produced by placement of an object such as a user's hand at the command location, from randomly occurring fluctuations in light intensity in the operatory environment.
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Cited Art Landscape
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