专利名称：Image taking apparatus and lens apparatus发明人：Yasuo Suda申请号：US10770437申请日：20040204
公开号：US20040155976A1公开日：20040812
专利附图：
摘要：An image taking apparatus which can perform a focusing operation quickly isdescribed. The image taking apparatus comprises a light splitting unit which splits a lightflux from the image-taking lens into a plurality of light fluxes, a view finder optical systemfor observing an object image formed by the light flux from the image-taking lens, an
image pickup element which photoelectrically converts the object image to an electricsignal and a focus detection unit for detecting the focusing state of the image-taking lensaccording to a phase difference detection system. Here, the light splitting unit changesbetween a first state in which the light flux is directed to the view finder optical systemand the focus detection unit and a second state in which the light flux is directed to theimage pickup element and the focus detection unit.
申请人：CANON KABUSHIKI KAISHA
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