초록 ▼

An optical apparatus includes a projecting optical system for projecting an image of an object in a viewfield onto an image receiving surface. First detecting structure is provided for detecting which position is viewed in the viewfield. Second detecting structure is provided for detecting a defocus

An optical apparatus includes a projecting optical system for projecting an image of an object in a viewfield onto an image receiving surface. First detecting structure is provided for detecting which position is viewed in the viewfield. Second detecting structure is provided for detecting a defocus for the image receiving surface of the image of the object. Optical system driving structure is provided for driving a portion of the projecting optical system according to the defocus detected by the second detecting structure. A processor is provided for causing the detection by said second detecting structure and the drive by said optical system driving structure to be repeated until the image of the object is focused on the image receiving surface. The processor also causes a first time detection by the second detecting structure to be performed for an object corresponding to a position of a first time detection by the first detecting structure, and causes a second time detection and following time detections by the second detecting structure to be performed for the object corresponding to the position of the first time detection by the first detecting structure.

대표청구항 ▼

[ What is claimed is:] [1.]1. An optical apparatus comprising:a projecting optical system for projecting an image of an object in a viewfield onto an image receiving member having an image receiving surface;first detecting means for detecting a position of a visual axis of an eye of a viewer in the

[ What is claimed is:] [1.]1. An optical apparatus comprising:a projecting optical system for projecting an image of an object in a viewfield onto an image receiving member having an image receiving surface;first detecting means for detecting a position of a visual axis of an eye of a viewer in the viewfield;second detecting means for detecting a defocus of the image of the object projected onto the image receiving surface by said projecting optical system;optical system driving means for driving a portion of said projecting optical system according to the defocus detected by said second detecting means; andcontrolling means for controlling said second detecting means and said optical system driving means to repeatedly perform detection by said second detecting means and driving by said optical system driving means until the image of the object is focused onto the image receiving surface of the image receiving member,wherein said controlling means controls said second detecting means to perform an initial defocus detection corresponding to the position of the visual axis detected by said first detecting means, and controls said second detecting means to perform a second defocus detection and subsequent defocus detections corresponding to the position of the visual axis detected by said first detecting means.