Electric optical distance wavelength meter
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United States of America Patent
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-
Mar 4, 2008
Grant Date -
Apr 20, 2006
app pub date -
Oct 19, 2005
filing date -
Oct 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
It is an object of the present invention to provide an electric optical distance wavelength meter detecting the time when the switching is completed and shortening the time required for distance measurement by immediately starting the distance measurement when measurement light and reference light are switched by a light path switching device. An electric optical distance wavelength meter includes a light emitting element for emitting measurement light toward a target placed on a measurement point; a light receiving element for receiving the measurement light coming back after reflecting on the target; a CPU for calculating the distance to the target or the object based on light receiving signals from the light receiving element; and a light path switching device for switching the measurement light so that the measurement light passes through an internal light path from the light emitting element to the light receiving element.
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