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Camera module focusing method, device and computer-readable storage medium

A camera module and focusing ring technology, applied in the field of photography, can solve the problems of not being able to guarantee 100% foolproof, poor accuracy, etc.

Active Publication Date: 2022-02-22
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a camera module focusing method, device and computer-readable storage medium, aiming to solve the problem that the existing camera module focusing method has poor accuracy and cannot guarantee 100% fool-proof

Method used

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  • Camera module focusing method, device and computer-readable storage medium
  • Camera module focusing method, device and computer-readable storage medium
  • Camera module focusing method, device and computer-readable storage medium

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Embodiment Construction

[0037] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] refer to figure 2 , figure 2 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the solution of the embodiment of the present invention.

[0039] In the embodiment of the present invention, the terminal may be a camera module focusing device, and the camera module focusing device may be a terminal device such as a PC (personal computer, personal computer), a portable computer, or a server, and is connected to the camera module through communication to monitor the camera module. group to focus. Of course, the terminal in this embodiment of the present invention may also be a control chip in the camera module, which is used to realize automatic focusing of the camera module.

[0040] like figure 2 As shown, the terminal may include: a processor 1001 , such...

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Abstract

The invention discloses a camera module focusing method. The camera module focusing method includes: after controlling the lens of the camera module, controlling the focus ring to rotate in a first preset direction according to preset rules, so as to drive the lens barrel of the camera module to rotate to a predetermined Set the position; control the focus ring to rotate in a second preset direction, and obtain the second real-time modulation transfer function MTF value during the rotation; calculate the second real-time MTF center ratio according to the second real-time MTF value , and stop controlling the focus ring when it is detected that the second real-time MTF center ratio is greater than a preset threshold. The invention also discloses a camera module focusing device and a computer-readable storage medium. The invention can solve the problems that the existing focusing method of the camera module has poor accuracy and cannot guarantee 100% fool-proof.

Description

technical field [0001] The invention relates to the field of camera technology, in particular to a camera module focusing method, device and computer-readable storage medium. Background technique [0002] In Camera (camera) products, what the user sees is the image formed by projecting the optical image generated by the Lens (lens) onto the surface of the sensor. The imaging quality and environmental adaptability of Camera products are related to the user experience. Therefore, before the product goes on the market, that is, after it is assembled into a finished product, it is necessary to conduct a reliability test to ensure that the imaging quality and environmental adaptability of the Camera product in actual work are qualified. However, most lenses have temperature characteristics, that is, the BFL (Back Focal Length) of the lens will become smaller in a low temperature environment, and at the same time the defocus curve of the lens will move to the left, causing the im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/67H04N23/617
Inventor 王天奇
Owner GOERTEK OPTICAL TECH CO LTD