| 摘要 |
PURPOSE:To provide a focus detector which enables the arrangement relation of detection zones on an expected focal plane and the arrangement relation of line sensors on an image reformation plane to freely be combined. CONSTITUTION:The focus detector is provided with detection zones 11-13 set on the expected focal plane 10, an image re-formation optical system which deflects images formed in the detection zones and divides and re-images them, and the sensor parts 41-43 which are arranged at the image re-formation positions by the image re-formation optical system corresponding to the detection zones and has the relation different from the arrangement relation of the detection zones on the expected focal plane 10. |
