초록 ▼

An auto-focus camera includes focus detection means for detecting the focussing state of a photographic lens, reliability discriminating means for discriminating whether the result of the focus detection means is reliable, first drive control means for driving the photographic lens to a position det

An auto-focus camera includes focus detection means for detecting the focussing state of a photographic lens, reliability discriminating means for discriminating whether the result of the focus detection means is reliable, first drive control means for driving the photographic lens to a position determined from the result of the focus detection means when the reliability discriminating means discriminates that the result is reliable, second drive control means for driving the photographic lens in a predetermined direction when the reliability discriminating means discriminates that the result is unreliable, and means for executing operations necessary for focussing during the predetermined direction driving, such as judgement as to whether a reverse driving is necessary, calculation of the driving amount of the photographic lens to an in-focus position.

대표청구항 ▼

An auto-focus camera comprising: focus detection means for detecting the focussing state of a photographic lens: reliability discriminating means for discriminating whether the result of the focus detection means is reliable; first drive control means for driving the photographic lens to a position

An auto-focus camera comprising: focus detection means for detecting the focussing state of a photographic lens: reliability discriminating means for discriminating whether the result of the focus detection means is reliable; first drive control means for driving the photographic lens to a position determined from the result of the focus detection means when the reliability discriminating means discriminates that the result is reliable; second drive control means for driving the photographic lens in a predetermined direction with allowing the focus detection means and the reliability discriminating means to execute when the reliability discriminating means discriminates that the result is unreliable; judging means for judging whether a reverse driving of the photographic lens is necessary when the reliability discriminating means discriminates that the result of the focus detection means is reliable during the predetermined direction driving; and third drive control means for driving the photographic lens in the reverse direction to a position determined from the instant result of the focus detection means when the judging means judges that the reverse driving is necessary.