| 摘要 |
PROBLEM TO BE SOLVED: To provide a focus detector whose focus detecting accuracy is not lowered even in the case of obliquely arranging an AF area. SOLUTION: An optical element arranged at the rear of a main mirror 2 arranged to be inclined to an optical axis O is arranged at a position compensated considering the aberration of luminous flux caused by transmitting the luminous flux through the main mirror 2. |
