| 摘要 |
PURPOSE:To detect a focus by providing a light splitting mirror, a submirror, an image re-forming lens and a photoelectric conversion means and arraying range finding visual fields set by image element rows only on a line in parallel with lines intersecting the planes of plural mirrors. CONSTITUTION:The splitting mirror 22 splits a portion of a luminous flux from a lens system to a finder system, and the submirror 26 reflects the luminous flux passing through the mirror 22 and leads it to a focus detecting device 27. A device 27 is provided with the image re-forming lens 51 which re-forms images of an object formed with the luminous flux reflected by the submirror 26 and forms secondary images, and a photoelectric conversion element train 55 forming plural image element rows. The range finding visual fields set by image element sets 60 and 62 are arrayed along the line intersecting the plane of the splitting mirror 22 and that of the submirror. By this constitution, electrical signals are read out as separate image element rows, and a focused state is operated as separate range finding visual fields. Algorithm for each signal processing is selected, and the camera can focus on an object. |
