| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-wave range finder capable of raising measurement accuracy, without having to raise the modulation frequency of a distance-measuring light. SOLUTION: The light-wave range finder includes a visible light emitting element (108) for emitting a modulated visible distance-measuring light (L1); a visible light-receiving element (109) for receiving the visible distance-measuring light and generating electrical signals; an invisible light-emitting element (114) for emitting an invisible distance-measuring light (l2), such as infrared rays modulated by the electrical signals from the visible light-receiving element; and an invisible light-receiving element (115) for receiving the invisible distance-measuring light and generating electrical signals. COPYRIGHT: (C)2011,JPO&INPIT
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