| 摘要 |
A range finder system (100) includes a point light source (10), image pickup devices (20), (30), and a processing device (50). The point light source (10) emits light. The image pickup devices (20), (30) include lenses (22), (32) and sensors (24), (34), respectively. The lenses have focal lengths F1, F2 and the sensors (24), (34) have light-received units. The processing device (50) is electrically coupled to the image pickup devices (20), (30). The processing device (50) calculates distance D1, D2 from locations of images of the point light source (10) on the light-received units to centers of the sensors (24), (34), respectively. A distance X from the point light source (10) to the first lens (22) and the second lens (32) is determined based on the ratio of D1 to F1 and the ratio of D2 to F2.
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