초록 ▼

A focus detecting apparatus comprises first means for forming phase outputs from said first and second photosensor arrays of phases respectively corresponding to the relative positions of said first and second photosensor arrays with respect to the light images thereon; second means for comparing th

A focus detecting apparatus comprises first means for forming phase outputs from said first and second photosensor arrays of phases respectively corresponding to the relative positions of said first and second photosensor arrays with respect to the light images thereon; second means for comparing the output corresponding to the amount of light entering said first photosensor array with the output corresponding to the amount of light entering said second photosensor array and forming a correlation output corresponding to said comparison; third means for forming outputs corresponding to the sharpness of light images on said photosensor arrays from the outputs from said arrays; and processing means for generating a synthesized output signal representing the focus state of said objective lens with respect to the object from the aforementioned phase outputs, correlation output and sharpness outputs.

대표청구항 ▼

A focus detecting apparatus provided with a pair of first and second photosensor arrays each having plural photosensor elements arranged in a determined direction; and optical means for projecting light images of the same object onto said first and second photosensor arrays and modifying at least on

A focus detecting apparatus provided with a pair of first and second photosensor arrays each having plural photosensor elements arranged in a determined direction; and optical means for projecting light images of the same object onto said first and second photosensor arrays and modifying at least one of the relative position of the first photosensor array with respect to the light image thereon and the relative position of the second photosensor array with respect to the light image thereon in response to the change of the focal position of an objective lens, whereby the focus state of said objective lens is detected from the relationship between said two relative positions, the improvement comprising: (a) first means for forming phase outputs from said first and second photosensor arrays of phases respectively corresponding to the relative positions of said first and second photosensor arrays with respect to the light images thereon; (b) second means for comparing the output corresponding to the amount of light entering said first photosensor array with the output corresponding to the amount of light entering said second photosensor array and forming an output corresponding to said comparison; (c) third means for forming outputs according to the magnitude of variation of the amount of light caused by said light image in said direction of said arranged plural photosensor elements; and (d) processing means for generating a synthesized output signal representing the focus state of said objective lens with respect to the object from the outputs of said first, second and third means.