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Shooting module and automatic focusing method thereof

A camera module, focusing position technology, applied in the field of electronics, can solve the problem of slow focusing speed of the camera module, and achieve the effect of short focusing time and fast speed

Inactive Publication Date: 2015-03-25
TRULY OPTO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a camera module and its auto-focus method to solve the problem of slow focusing speed of the camera module in the prior art that adopts a contrast focusing method for auto-focus

Method used

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  • Shooting module and automatic focusing method thereof
  • Shooting module and automatic focusing method thereof
  • Shooting module and automatic focusing method thereof

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Embodiment Construction

[0031] 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.

[0032] An embodiment of the present invention provides a camera module, including a motor and a lens embedded in the motor, such as figure 1 As shown, the camera module provided in this embodiment further includes a ranging module 10 , a control module 20 and a driving module 30 .

[0033] The ranging module 10 includes a transmitting unit, a receiving unit and a processing unit, the transmitting unit is used to transmit light to the object to be photographed,...

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Abstract

The invention provides a shooting module and an automatic focusing method thereof. The shooting module comprises a motor and a camera embedded in the motor, and further comprises a ranging module, a control module and a drive module. The ranging module comprises a transmitting unit, a receiving unit and a processing unit, the transmitting unit is used for transmitting a ray to an object to be shot, the receiving unit is used for receiving the ray reflected by the object to be shot, and the processing unit is used for calculating the object distance between the shooting module and the object to be shot according to the time when the ray is transmitted and received and sending the measured object distance to the drive module. The control module is used for receiving the measured object distance, determining a corresponding drive instruction according to the corresponding relation between the object distance and a motor drive instruction, and sending the corresponding control instruction to the drive module. The drive module is used for outputting the drive instruction to the motor after receiving the control instruction, the motor drives the camera to the corresponding focusing position. According to the camera module and the focusing method, the focusing time is short, and the focusing speed is high.

Description

technical field [0001] The present invention relates to the field of electronic technology, and more specifically, to a camera module and an automatic focusing method thereof. Background technique [0002] Most of the existing camera modules use a contrast focusing method. The so-called contrast focusing is to find the best focus point based on the image difference of the lens at different positions. The focusing process is as follows: the lens is driven by the motor in a certain direction. The data analysis and calculation of a certain area of ​​​​the image can obtain a value that can relatively quantify the clarity, and record the position of the lens at the same time. After the lens is continuously moved for multiple distances, a set of values ​​​​is obtained, and the lens position corresponding to the maximum value of this set of data is found. , to drive the lens back to this position, so that autofocus is finally achieved. [0003] That is to say, this focusing metho...

Claims

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Application Information

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IPC IPC(8): H04N5/232G02B7/28G03B13/36
Inventor 高艳朋张粦钢李建华
Owner TRULY OPTO ELECTRONICS
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