Patent ID: 6922526
Filing Date: 2005-07-26
Classification: G02B

Abstract:
1. A focus detection device, comprising: a plurality of line sensors, each having a plurality of pixels, wherein each of said line sensors photoelectrically converts and integrates light from an object received by each of said pixels so as to output the received light as an image signal; a plurality of monitor sensors provided adjacent to said line sensors, respectively, each of said monitor sensors monitoring an integrated value of said adjacent line sensor; a control device which controls an integration operation of a predetermined one of said line sensors and a predetermined one of said monitor sensors; and a detection device which detects that a monitor signal of each of the monitor sensors reaches a predetermined termination value for terminating integration of the corresponding line sensor after the control device allows the predetermined line sensor and the predetermined monitor sensor to start the integration, wherein the control device outputs a first-termination signal from a first control terminal when the detection device detects the monitor signal of any of the monitor sensors first reaching the termination value, and thereafter outputs integration termination information of the respective monitor sensors detected by the detection device sequentially from the first control terminal.