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Focusing method for camera module

A camera module and focusing method technology, applied in the field of optical lenses, can solve the problems of high production cost, unable to put focusing tools, difficult to find test charts, etc., to achieve low cost, wide application range and high focusing accuracy Effect

Inactive Publication Date: 2017-06-13
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the focusing distance is required to be as short as 1.5cm to 4.0cm, the above-mentioned focusing method cannot be realized. On the one hand, it is difficult to find a standard test chart; coke
If complex assembly equipment is invested, the above problems can be solved, but the production cost is high

Method used

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  • Focusing method for camera module
  • Focusing method for camera module
  • Focusing method for camera module

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, 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.

[0033] Please also see Figure 1-3 ,in, figure 1 It is a flow chart of the focusing method of the camera module of the present invention; figure 2 It is a structural schematic diagram of a pre-focusing object distance focusing state of the camera module of the present invention; image 3 It is a structural schematic diagram of a target focusing object distance focusing state of the camera module of the present invention. The invention provides a method for...

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Abstract

The invention provides a focusing method for a camera module. The method comprises the following steps of: providing a camera module to be assembled and focused and providing a focusing table of the camera module and a target focusing distance d1; performing preassembling and focusing and completing the initial focusing of a pre-focusing position d2; searching out a lens translation value corresponding to the pre-focusing object distance d2 and the target focusing distance d1 from the focusing table; calculating the rotation angle A of a lens barrel; and rotating a lens base or a lens by an angle A to complete the target focusing. Compared with the prior art, the focusing method for the camera module has low production cost, high focusing precision and a wide use range.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of optical lenses, in particular to a focusing method for a camera module. [0003] 【Background technique】 [0004] With the continuous development of science and technology, electronic devices are constantly developing towards intelligence. In addition to digital cameras, portable electronic devices such as tablet computers and mobile phones are also equipped with camera modules with camera and video functions to meet the needs of users to take pictures at any time . [0005] The camera module in the related art includes a lens barrel and a lens module arranged in the lens barrel. For the camera module in the related art, it has a fixed focal length, and the way of taking pictures is the same in production and in daily use, that is, A standard test chart or resolution chart is set at a fixed distant position, and the correct focus position is adjusted by rotating the lens barrel of the camera module. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/10G03B30/00
CPCG02B7/10
Inventor 魏回
Owner AAC TECH PTE LTD
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