05422700 is referenced by 22 patents and cites 13 patents.

A camera in which focus is detected for a plurality of viewfields within a selected observation block includes observation structure for observing an object therethrough, and visual axis detecting structure for detecting the position of the visual axis of an observer's eye. A plurality of observation blocks are defined, each block having a plurality of detection viewfields. Structure is provided for selecting one of the blocks in accordance with a result of the detection of the visual axis detecting structure. Focus detection circuitry is provided for performing a focus detection operation with respect to the detection viewfields which are included within the selected observation block. Circuitry is also provided for forming a focus adjustment signal for an objective lens on the basis of the detection information of the focus detection circuitry regarding the detection viewfields of the selected observation block.

Title
Camera in which focus is detected to a plurality of viewfields within a observation block which is selected by visual axis detecting means
Application Number
865042
Publication Number
5422700
Application Date
September 28, 1994
Publication Date
June 6, 1995
Inventor
Kazuki Konishi
Tokyo
JP
Akihiko Nagano
Kawasaki
JP
Yasuo Suda
Yokohama
JP
Agent
Fitzpatrick Cella Harper & Scinto
Assignee
Canon Kabushiki Kaisha
JP
IPC
G03B 13/36
G03B 29/00
G03B 3/00
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