Autofocusing device

Abstract

Abstract PURPOSE:To quickly decide an in-focus state by deciding the in-focus state even at the time of driving a lens if an object is a moving body. CONSTITUTION:An in-focus state deciding means devices the in-focus state only at the time of stopping a photographic lens if a moving body deciding means decides a still object, but the in-focus deciding means decides the in-focus state even at the time of driving the photographic lens if the moving body deciding means decides a moving object. Since the in-focus state deciding means decides the in-focus state even at the time of driving the lens if the moving body deciding means decides a moving object, the in-focus state is decided more quickly in comparison with the case where the in-focus state is decided only at the time of stopping the lens. Meanwhile, since the in-focus state deciding means decides the in-focus state only at the time of stopping the lens if the moving body deciding means decides that the object is stopped, the in-focus state is decided with the same high precision as conventional.

Inventors

• 👤 Kenji Ishibashi
• 👤 賢司 石橋
• 👤 Masataka Hamada
• 👤 正隆 浜田
• 👤 Tokuji Ishida
• 👤 石田　徳治

Bibliographic Details