Shooting device and method, camera and logistics capture system

Abstract

The invention relates to optical imaging technology, and discloses a shooting device and method, a camera and a logistics capture system. In the present invention, the shooting device for expanding the depth of field includes a first lens group and a second lens group, and a photosensitive chip, the first lens group and the second lens group are arranged side by side, and the far point and the near point of the depth of field of the first lens group are respectively The far point and the near point of the depth of field that are far away from the second lens group; And, the photosensitive chip has first and second photosensitive areas, the first photosensitive area provides imaging for the first lens group, and the second photosensitive area provides for the second lens group imaging. Since the focus planes of the two lens groups are different, image information under different depth of field conditions can be obtained on one image, thereby achieving the effect of extending the depth of field range of the entire shooting device.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a shooting technique for expanding the depth of field. Background technique [0002] With the development of camera technology, its application fields are more and more extensive, and in some special fields, higher and higher requirements are put forward for the depth of field of the camera. [0003] A common way to expand the depth of field of a camera is to expand the depth of field by reducing the aperture. This method also brings some problems while increasing the depth of field. The difficulty of recognition by machine vision algorithms. [0004] Another common method for extending the depth of field of a camera is to increase the depth of field of the entire system by adding photosensitive chips and lenses to enable simultaneous focusing on different object distances in the same scene. The problem with this method is that it will not only increase the cost of the system, bu...

AI Technical Summary

Problems solved by technology

However, a lens with specified parameters will only have a certain range of depth of field. Although the depth of field can be increased by reducing the aperture, when the aperture is reduced to a certain size, there will be diffraction effects, and the depth of field cannot be increased.

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