| 摘要 |
PROBLEM TO BE SOLVED: To provide a range-finding device capable of accurately deciding infinity even when the assembling errors of a line sensor and a light receiving lens are made without using an expensive special sensor. SOLUTION: The range-finding device is provided with the light receiving lenses 101a and 101b on which a pair of subject images is formed, a pair of line sensors 102a and 102b converting a pair of subject images into an electrical signal in accordance with light intensity, a control means 103 for controlling the operation of a pair of line sensors, a read-out means 104 for A/D converting and reading out subject image data outputted from a pair of line sensors, and an arithmetic means 105 for arithmetically calculating data in accordance with a subject distance based on the read subject image data. In the case the pattern of the subject image data in a range-finding area is monotonously increased or monotonously decreased, an infinity deciding value is set to a value which is shifted to a short-distance side than usual. COPYRIGHT: (C)2004,JPO |
