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Optical automatic focusing method and system

A technology of focusing and collimating light, which is applied in optics, testing optical performance, instruments, etc., can solve problems such as difficult control of product quality, troubles for the healthy development of the CCM industry, and large manpower requirements, and achieve the goal of improving product quality and automation Effect

Inactive Publication Date: 2010-02-10
CHANGCHUN UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the huge output of CCM, there is a lot of manual work in the assembly and testing work, resulting in low product qualification rate, difficult to control product quality, high production cost, and large manpower demand.
The above problems plague the healthy development of the CCM industry

Method used

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  • Optical automatic focusing method and system
  • Optical automatic focusing method and system
  • Optical automatic focusing method and system

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0019] figure 1 It is a schematic flow chart of an embodiment of the optical auto-focusing method of the present invention, such as figure 1 As shown, the embodiment of the present invention includes the following steps:

[0020] Step 101, projecting the resolution pattern generated by the computer onto the projection screen;

[0021] Step 102, collimating the resolution pattern on the projection screen into collimated light through the collimating objective lens;

[0022] Step 103, imaging the collimated light on the focal plane of the image side of the objective lens of the camera module to form a video image signal;

[0023] Step 104, the computer controls the focusing device to perform focusing processing on the camera module according to the video image signal.

[0024] In the optical auto-focusing method prov...

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Abstract

The invention relates to an optical automatic focusing method and a system, wherein the method comprises the following steps: projecting a resolution pattern generated by a computer to a projection screen; collimating the resolution pattern on the projection screen into collimated radiation through a collimated lens; imaging the collimated radiation on an image focal plane of a camera module lensto form a video image signal; controlling focusing equipment by the computer according to the video image signal to carry out focusing processing on the camera module. The optical automatic focusing method and the system control the focusing equipment by the computer according to the video image signal to carry out focusing processing on the camera module after forming the video image signal on the image focal plane of the camera module; due to the fact that eyes are not needed to judge the image quality after the camera module is focused, the degree of automation of focusing of the camera module is increased.

Description

technical field [0001] The invention relates to automatic detection technology, in particular to an optical automatic focusing method and system. Background technique [0002] The camera module (CMOS Camera Module, referred to as: CCM) is the core device for a new generation of portable camera equipment. Compared with traditional camera systems, it has the advantages of miniaturization, low power consumption, low cost, and high image quality. It is also used in camera phones , videophone, car assisted driving, security monitoring and other fields are widely used. CCM is mainly composed of sensor (SENSOR), lens (LENS), flexible printed circuit board (Flexible Printed Circuit, referred to as: FPC), connecting device (CONNET) and other components. The current CCM production process is still dominated by manual assembly and manual testing in addition to patching. Due to the huge output of CCM, there is a lot of manual work in assembly and testing, resulting in low product qual...

Claims

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Application Information

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IPC IPC(8): G03B43/00G01M11/02
Inventor 闫钰锋徐东明张晖于化东付秀华刘立欣白素平向阳刘冬梅
Owner CHANGCHUN UNIV OF SCI & TECH