초록 ▼

In an automatic continuous focusing device, two detected images of an object formed by a distance detection optical system with a relative distance therebetween associated with the object distance are scanned, the obtained scanning signals are quantized to generate quantized picture element data, th

In an automatic continuous focusing device, two detected images of an object formed by a distance detection optical system with a relative distance therebetween associated with the object distance are scanned, the obtained scanning signals are quantized to generate quantized picture element data, the relative distance between the two detected images is detected on the basis of the quantized picture element data, and an imaging optical system to be focused on the object is controlled according to the detection result. The device also provides for invalidating the control of the imaging optical system when the results of detection of the quantized condition of the scanning signals indicate that the quantized condition of the scanning signals for at least one of the two detected images is not sound or reasonable.

대표청구항 ▼

An automatic focusing device comprising: sensing means for sensing an image of an object and for generating a plurality of signals therefrom; control means for generating a control signal; focusing means for focusing an optical system on the basis of the plurality of signals from said sensing means,

An automatic focusing device comprising: sensing means for sensing an image of an object and for generating a plurality of signals therefrom; control means for generating a control signal; focusing means for focusing an optical system on the basis of the plurality of signals from said sensing means, said focusing means focusing the optical system only when said focusing means continuously detects the control signal for a predetermined time period; and inhibiting means having a detection period shorter than the predetermined time period, said inhibiting means detecting each of the plurality of signals from said sensing means in each detection period and inhibiting the focusing means when the plurality of signals from said sensing means are at predetermined conditions.