| 摘要 |
PROBLEM TO BE SOLVED: To precisely measure the distance to a center subject among respective subjects positioned in different measurement visual fields and to greatly shorten the arithmetic time needed for the distance measurement. SOLUTION: The multispot range finder has a couple of photodetecting means which receive light beams from the respective subjects positioned in the different measurement visual fields and a phase difference arithmetic means which computes the phase difference between image signals outputted from the couple of photodetecting means and measures the distances to the subjects in the respective measurement visual fields according to the arithmetic result of the phase difference arithmetic means; and the photodetecting means has a plurality of photoelectric converting elements arrayed at specified pitch and is characterized in that the photoelectric converting element pitch (p) at the center part c1 of the photodetecting means is smaller than the photoelectric converting element pitches 2p at peripheral parts r1 and l1. Then the distance to the center subject among the respective subjects in the respective measurement visual fields is measured with the image signal outputted from the center part of the photodetecting means and the distances to circumferential subjects among the subjects in the measurement visual fields are measured with the image signals outputted from the peripheral parts of the photodetecting means. |
