초록 ▼

An automatic focusing camera includes a sensor for detecting an amount and a direction of difference between an image forming position of light from an object being photographed and a film surface to drive a taking lens in response to the measured outputs and focus determining capability which gives

An automatic focusing camera includes a sensor for detecting an amount and a direction of difference between an image forming position of light from an object being photographed and a film surface to drive a taking lens in response to the measured outputs and focus determining capability which gives a decision of in-focus when the amount of difference is less than a first automatic focusing threshold. A focusing operation is achieved such that, comparing the amount of difference determined by the sensor with a second automatic focusing threshold of a standard value which is larger than the first automatic focusing threshold, when the amount is less than the second threshold and a direction of difference last measured and that presently measured are the same, a taking lens driving is continued to complete a focusing operation and when the directions are different from each other, the measurement is resumed after the next driving of the taking lens even when the amount is less than the second threshold.

대표청구항 ▼

An automatic focusing camera including measuring means for detecting an amount and a direction of difference between an image forming position of light from an object being photographed and a film surface to drive a taking lens in response to an output therefrom and focus determining means for deter

An automatic focusing camera including measuring means for detecting an amount and a direction of difference between an image forming position of light from an object being photographed and a film surface to drive a taking lens in response to an output therefrom and focus determining means for determining an in-focus condition when an amount of the difference measured by said measuring means is less than a given value to produce an in-focus signal to complete a focusing operation, comprising: means for detecting the neighborhood of focus for comparing said amount of difference with a standard value larger than said given value; means for determining a direction of difference for comparing a direction of difference last measured by said measuring means with that presently measured after the taking lens has been driven in response to the last measured output; and means for adjusting focusing for driving the taking lens in response to a measured output from said measuring means such that when said focus neighborhood detecting means detects that said amount of difference is less than said standard value and said direction detecting means detects that the last and the presently measured directions are the same, the focusing operation is completed with the next lens driving and when said amount of difference is less than said standard value and both said directions are different from each other, a range measurement resumes after the next lens driving is carried out.