초록 ▼

An image taking apparatus which can perform a focusing operation quickly is described. The image taking apparatus comprises a light splitting unit which splits a light flux from the image-taking lens into a plurality of light fluxes, a view finder optical system for observing an object image formed

An image taking apparatus which can perform a focusing operation quickly is described. The image taking apparatus comprises a light splitting unit which splits a light flux from the image-taking lens into a plurality of light fluxes, a view finder optical system for 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 electric signal and a focus detection unit for detecting the focusing state of the image-taking lens according to a phase difference detection system. Here, the light splitting unit changes between a first state in which the light flux is directed to the view finder optical system and the focus detection unit and a second state in which the light flux is directed to the image pickup element and the focus detection unit.

대표청구항 ▼

What is claimed is: 1. An image taking apparatus comprising: an image pickup element which photoelectrically converts an object image formed by an image-taking lens to an electrical signal; a focus detection unit configured and positioned to detect a focusing state of the image-taking lens accordin

What is claimed is: 1. An image taking apparatus comprising: an image pickup element which photoelectrically converts an object image formed by an image-taking lens to an electrical signal; a focus detection unit configured and positioned to detect a focusing state of the image-taking lens according to a phase difference detection system by using a light flux directed from the image-taking lens; a half mirror which reflects a part of the light flux from the image-taking lens and through which the other part of the light flux passes; and a display section which displays image data obtained using the image pickup element, wherein the half mirror changes its state between a first state and a second state, wherein in the first state, the light flux reflected by the half mirror is directed to the focus detection unit and the light flux passing through the half mirror is directed to the image pickup element, and wherein in the second state, the light flux from the image-taking lens is directed only to the image pickup element by withdrawing the half mirror from an image-taking optical path, and wherein, when the half mirror is in the first state, the display section is controlled so as not to display an image-taking area of the image pickup element which is obtained in the first state and not obtained in the second state. 2. An image taking apparatus comprising: an image pickup element which photoelectrically converts an object image formed by an image-taking lens to an electrical signal; a focus detection unit configured and positioned to detect a focusing state of the image-taking lens according to a phase difference detection system by using a light flux directed from the image-taking lens; a finder optical system to which the light flux from the image-taking lens is directed; a half mirror which reflects a part of the light flux from the image-taking lens and through which the other part of the light flux passes; and a display which displays image data obtained using the image pickup element, wherein the half mirror changes its state among a first state, a second state and a third state, wherein in the first state, the light flux reflected by the half mirror is directed to the finder optical system and the light flux passing through the half mirror is directed to the focus detection unit, wherein in the second state, the light flux reflected by the half mirror is directed to the focus detection unit and the light flux passing through the half mirror is directed to the image pickup element, and wherein in the third state, the light flux from the image-taking lens is directed only to the image pickup element by withdrawing the half mirror from an image-taking optical path, and wherein, when the half mirror is in the second state, the display is controlled so as not to display an image-taking area of the image pickup element which is obtained in the second state and not obtained in the third state.