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Camera focusing mode and device based on MTF value

A camera and lens technology, applied in the field of camera focusing methods and devices based on MTF values, can solve problems such as unfavorable automatic production, achieve the effects of improving debugging efficiency, simple focusing methods, and improving production automation

Pending Publication Date: 2022-02-08
深圳市志翀电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the setting of the relay mirror in this debugging method, there is no extra space for installing the manipulator, so that the loading, unloading and rotation of the camera module need to be completed manually, which is not conducive to automated production

Method used

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  • Camera focusing mode and device based on MTF value
  • Camera focusing mode and device based on MTF value

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Embodiment Construction

[0015] Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0017] The camera includes a lens, a lens holder and a main circuit board. ...

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Abstract

The invention provides a camera focusing mode based on an MTF value, and relates to the technical field of camera focus debugging, and the camera focusing mode comprises the following steps: S1, constructing a mapping relation table between an actual shooting distance a and a compensation rotation angle b; S2, adjusting the focus of the camera; and S3, carrying out rotation of a compensation angle on the basis of adjusting the focus of the camera. According to the camera focusing mode based on the MTF value provided by the invention, a relay lens does not need to be used, so that the original debugging equipment has a space for mounting a manipulator, the debugging efficiency can be improved, the production automation can be improved, and the focusing mode is simple, reliable and accurate.

Description

technical field [0001] The invention relates to the technical field of camera focus adjustment, in particular to a camera focus adjustment method and device based on an MTF value. Background technique [0002] The MTF value (modulation transfer function) is a value that comprehensively evaluates the contrast and resolution of the lens. The MTF value represents the modulation value of a single point on the lens. Generally, multiple points on the lens are selected to measure the MTF value for comprehensive evaluation. Since the thickness of the lens is not consistent or there is a radian, the chart (lens test) placed at the lens imaging The chart) is flat, which leads to different MTF values ​​tested on the chart by different test points on the lens. If the MTF value of the center point is the largest, the MTF value of the edge will decrease accordingly, so that the center of the final image is clear and the edge is blurred. [0003] In order to make the sharpness of all pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N17/00
CPCH04N17/002H04N23/67H04N23/695
Inventor 邓南新
Owner 深圳市志翀电子科技有限公司