Led-based flashlight
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United States of America Patent
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Jul 18, 2006
Grant Date -
Jan 13, 2005
app pub date -
Mar 5, 2004
filing date -
Feb 6, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A flashlight that utilizes an array of one or more light-emitting diodes (LEDs) as a light source, and a light pipe as a light homogenizer to generate a light beam capable of forming a uniformized light distribution at a given distance from the flashlight is disclosed. The LEDs may be all the same color, or some or all may be different colors. A switch, coupled to switching electronics coupled to the LED array, is used to change the state of the LED array to create a variety of different types of light beams, each of which provides relatively uniform and bright illumination at a given distance from the flashlight, wherein the given distance is selectable by adjusting an adjustable imaging lens.
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