System and method for operating groups of lasers to project a visible line of demarcation within discrete regions of an athletic field
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United States of America Patent
Stats
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Jun 22, 2004
Grant Date -
Jun 17, 2004
app pub date -
Mar 10, 2003
filing date -
Dec 16, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The surface of an athletic field is divided into multiple regions or zones. A first of these zones is served by a first group of laser sources. A second of the zones is served by a second group of laser sources. Each group includes at least two lasers arranged to project visible light onto the field from opposite lateral sides of the field. The output from each group is focused onto the field so as to form a composite line across the field--anywhere within the associated zone. A controller is operative, in response to receipt of a command from either a keyboard terminal or a wireless, hand held user interface device, to select one of the first group of laser sources and the second group of laser sources to project a composite temporary visible line. The zones may be contiguous or may be separated by one or more intermediate zones, with each intermediate zone having its own associated group of laser sources.
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