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Sensor for measuring distance, apparatus for measuring distance and camera, and method for distance measuring

A distance measuring device and sensor technology, which is applied to cameras, measuring devices, measuring distance and other directions, can solve the problems of differential processing of objects that cannot be photographed, complicated circuits, and increased cost of distance measuring sensors.

Inactive Publication Date: 2005-02-23
OLYMPUS CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

However, in a sensor for distance measurement having such a simplified structure (low versatility) in which phase difference calculation is performed only on ordinary subjects, it is impossible to perform differential processing on such a difficult subject
Therefore, the ranging accuracy cannot be improved.
On the contrary, if all the processing including this processing is executed in the sensor for distance measurement, the circuit in the sensor for distance measurement will become complicated, resulting in an increase in the cost of the sensor for distance measurement

Method used

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  • Sensor for measuring distance, apparatus for measuring distance and camera, and method for distance measuring
  • Sensor for measuring distance, apparatus for measuring distance and camera, and method for distance measuring
  • Sensor for measuring distance, apparatus for measuring distance and camera, and method for distance measuring

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Embodiment Construction

[0022] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0023] Using the following examples, the distance measuring sensor of the present invention will be described as an embodiment of the present invention. figure 1 is a diagram mainly showing the configuration of a distance measuring device in a camera using a distance measuring sensor according to an embodiment of the present invention.

[0024]In the present embodiment, the distance to the subject is found by a phase difference detection method, which is a technique widely known in the range measuring device of a camera. The phase difference detection method is a method in which the light beam from the subject is divided into two parts and is projected onto the light-receiving plane so that the distance from the subject is obtained from the distance between the two projected images by the triangulation method. the distance of the object. Therefore, it ...

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Abstract

The present invention provides a distance-measuring sensor which does not impair the universality, suppresses the requirement of a large memory capacity for storage and an increase of data transmission time, a new distance-measuring sensor is provided. The sensor has an arithmetic part for calculating the intermediate data of a distance calculation, and an output part for outputting the intermediate data.

Description

technical field [0001] The present invention relates to a distance-measuring sensor, and more particularly to a distance-measuring sensor of a distance-measuring device used in a camera or the like and which utilizes a phase difference mode in triangulation. In addition, the present invention also relates to the above distance measuring device or camera using the above distance measuring sensor. Background technique [0002] Sensors recently used in distance measuring devices have benefited from rapid advances in semiconductor manufacturing technology and circuit design technology. Miniaturization and area reduction (transition from line sensors to area sensors) are progressing, and the number of photoelectric conversion elements used in distance measurement also tends to increase. The ranging device can measure the distance of multiple positions of an object (multi-point ranging). Therefore, by increasing the number of ranging positions, the field of view can be fully ana...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C3/06G02B7/28G02B7/30G02B7/32G03B13/36
CPCG02B7/32
Inventor 金田一刚史中田康一野中修
Owner OLYMPUS CORP