Patent ID: 6438324
Filing Date: 2002-08-20
Classification: G02B

Abstract:
A distance-measuring device comprising:at least a pair of integration-type light-receiving sensors for receiving the light from subjects via an optical system and producing a subject image signal; a light projecting section for projecting light onto said subjects; a steady-state light removing section for obtaining an image signal by removing the steady-state light component from the subject image signal said pair of integration-type light-receiving sensors produces, while said light projecting section is projecting light onto said subjects; a first distance-measuring section for measuring a subject distance on the basis of the image signal obtained by causing said steady-state light removing section to remove the steady-state light component from said subject image signal; a subject select section for causing said first distance-measuring section to make distance measurements for a specific time, performing operation on the resulting image signal using a specific correction function, and thereby selecting a subject whose distance is to be measured; and a second distance-measuring section for measuring the distance to the subject whose distance is to be measured which has been selected by said subject select section, on the basis of the subject image signal obtained by said pair of integration-type light-receiving sensors, while said light projecting section is not projecting light onto said subjects.