Distance measurer and carema having same

Abstract

Disclosed is a distance measurer and camera having same, the distance measuring sensor applied to the present distance measuring device has three pairs of line sensors arranged in the center the control circuit. In three pairs of line sensors, the central line sensors have a train of photodetector units and a train of processing units, to be divided into two, for processing output signals of the train of photodetector units. The upper line sensors and lower line sensors are arranged on the upper and lower sides of the train of photodetector units on the right and left of the center line sensors, opposed to the train of processing units. The upper and lower line sensors have the train of photodetector units corresponding to a length of two-divided line-sensor. The arranged sensor can measure the distance of the photographed object with high accuracy and hold the density of the distance measurement area, meanwhile provide an inexpensive range-finding device in a proper configuration.

Description

technical field [0001] The present invention relates to cameras such as a distance measuring device, an optical sensor, a silver chloride camera incorporating a distance measuring device, and a digital camera. Background technique [0002] In the prior art, in order to measure the distance of the subject, the distance measuring device adopts a distance measuring sensor provided with several pairs of line sensors. For example, there is a distance measuring device that performs distance measurement in a wide range where a plurality of line distance measurement areas are provided. In this distance measuring device, the more distance measuring areas correspond to the line sensor, the more reliably the subject can be captured, and the distance measuring accuracy can be improved. [0003] When this distance measuring device is used for a silver chloride camera or the like having a zoom lens, there are the following problems. That is, when the shooting magnification is low, even ...

AI Technical Summary

Problems solved by technology

[0010] However, in the line sensor of the above-mentioned JP-A-11-153749 distance measuring device, some of the light receiving parts are too close to each other, and the other part of the light receiving parts are too far apart, and the arrangement of the distance measuring areas is unbalanced.

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