Range finder
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United States of America Patent
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Jun 24, 2003
Grant Date -
Jul 18, 2002
app pub date -
Jan 14, 2002
filing date -
Jan 16, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A range finder includes a light source for emitting a light beam to an object to be measured, a detector for detecting a reflected light from the object, a measuring part for calculating the distance to the object on the basis of the reflected light detected by the detector, a display capable of displaying two objects to be measured as well as the distance to the object measured by the measuring part, a finder for observing the two objects shown on the display, at least one index set on the display for indicating the positions regarding the two objects shown on the display, a field angle setting portion, equipped with a moving part for moving the index to the position of the object, for setting a field angle between the two objects on the basis of the positions indicated by the index, and a calculating part for calculating the separation between the two objects on the basis of the distance to the object measured by the measuring part and the field angle set by the field angle setting portion. The two objects can be observed through the finder, and the separation between the two objects can be calculated on the basis of the field angle relative to the two objects set by the field angle setting portion and the distance to the object calculated by the measuring part.
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