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Camera module parameter recording method, vignetting adjusting method and device

A camera module and parameter recording technology, which is applied in the field of data processing, can solve the problems of vignetting, high cost, vignetting, etc., and achieve the effects of saving production costs, reducing errors, and improving production efficiency

Pending Publication Date: 2022-04-29
GUANGZHOU AVA ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many reasons for vignetting. In the process of sensor and zoom lens selection, when factors such as sensor target size and zoom lens optical characteristics are not considered comprehensively, images with vignetting will be generated at some focal lengths; in the sensor PCB manufacturing process , the offset of the sensor patch position will also cause vignetting; in the assembly process, errors caused by assembly operations, part structure or assembly tolerances will also cause vignetting
[0003] In the traditional method to solve the phenomenon of vignetting, it is generally improved from the design and assembly links to ensure that at any focal length, the center of the lens and the center of the sensor target surface are on the same horizontal line to eliminate the vignetting, but this will lead to higher costs. And affected by the assembly process, it is difficult to completely guarantee that all products have no vignetting phenomenon

Method used

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  • Camera module parameter recording method, vignetting adjusting method and device
  • Camera module parameter recording method, vignetting adjusting method and device
  • Camera module parameter recording method, vignetting adjusting method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Camera module, full name Camera Compact Module, abbreviated as CCM. CCM consists of four major components: lens (lens), sensor (sensor), flexible board (FPC), and image processing chip (DSP). The important components that determine the quality of a camera are: lens (lens), image processing chip (DSP), sensor (sensor). The lens is composed of several lenses, which can image the scene to be shot on the sensor; the sensor is a device used to receive the light passing through the lens and convert the light signal into an electrical signal; DSP is a digital image through complex mathematical operations. After the signal is optimized, the signal is transmitted to the display. The working principle of the camera is mainly to shoot the scene through the lens, project the generated optical image onto the sensor, and the sensor will convert the optical image into an electrical signal, and the electrical signal is converted into a digital image signal by the internal image proces...

Embodiment 2

[0085] Corresponding to the method in Embodiment 1, the present invention also provides a method for adjusting the vignetting of the camera module, please refer to Figure 4 , Figure 4 It is a schematic flowchart of a method for adjusting a vignetting angle of a camera module provided in Embodiment 2 of the present invention, and the method includes step S410, step S420 and step S430. It should be noted that step S410, step S420 and step S430 are only reference numerals for clearly explaining the embodiment and the accompanying Figure 4 The corresponding relationship does not represent a limitation on the order of the steps in this embodiment.

[0086] Step S410, receiving the focal length to be adjusted.

[0087] Step S420, obtaining parameters to be adjusted according to the focal length to be adjusted; wherein, the adjustment parameters are obtained by the method described in Embodiment 1.

[0088] Step S430, adjusting the sensor according to the adjustment parameter. ...

Embodiment 3

[0093] Corresponding to the method of embodiment one, such as Figure 5 As shown, the present invention also provides a camera module parameter recording device 5 , including: a receiving module 501 , a calculating module 502 , an adjusting module 503 and a recording module 504 .

[0094] The receiving module 501 is configured to receive the focal length to be recorded by the camera module, wherein the focal length to be recorded is one of multiple candidate focal lengths;

[0095] The calculation module 502 is used to calculate the axis offset value, wherein the axis offset value is the offset value of the center of the image capturing area of ​​the sensor of the camera module relative to the lens optical center of the camera module;

[0096] An adjustment module 503, configured to adjust parameters of the camera module according to the axis offset value;

[0097] The recording module 504 is configured to record the currently adjusted parameters of the camera module for the ...

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Abstract

The invention discloses a parameter recording method of a camera module and a vignetting adjusting method and device. The parameter recording method of the camera module comprises the following steps: receiving a focal length to be recorded of the camera module, the focal length to be recorded being one of a plurality of candidate focal lengths; an axis deviation value is calculated, and the axis deviation value is the deviation value of the center of an image taking area of a sensor of the camera module relative to the optical center of a lens of the camera module; adjusting parameters of a camera module according to the axis deviation value; and recording currently adjusted parameters of the camera module for the focal length to be recorded. The candidate focal lengths and the vignetting-free parameters corresponding to the candidate focal lengths are recorded for later use, so that the technical problem that vignetting-free images can be shot at each focal length is solved, and in the recording and adjusting process, disassembly and reassembly are not needed, and the production process is simplified.

Description

technical field [0001] The present invention relates to the technical field of data processing, and more specifically, to a method for recording parameters of a camera module, a method and a device for adjusting vignetting. Background technique [0002] The so-called vignetting refers to the phenomenon that when shooting a scene with uniform brightness, the four corners of the screen do not match the actual scene and the brightness decreases. There are many reasons for vignetting. In the process of sensor and zoom lens selection, when factors such as sensor target size and zoom lens optical characteristics are not considered comprehensively, images with vignetting will be generated at some focal lengths; in the sensor PCB manufacturing process , The offset of the sensor patch position will also cause vignetting; in the assembly process, errors caused by assembly operations, part structure or assembly tolerances will also cause vignetting. [0003] In the traditional method ...

Claims

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Application Information

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IPC IPC(8): H04N5/225H04N5/232
CPCH04N23/50H04N23/54H04N23/67
Inventor 欧俊文关本立
Owner GUANGZHOU AVA ELECTRONICS TECH CO LTD
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