Optical center test method, device and equipment
A technology of optical center and test method, applied in the field of camera, can solve the problems of single white field test environment and low accuracy, and achieve the effect of improving manufacturing capacity and product competitiveness, improving yield and ensuring quality
Active Publication Date: 2021-07-16
重庆市天实精工科技有限公司
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[0005] In view of this, the object of the present invention is to provide an optical center testing method, device and equipment for solving the technical problem that the traditional testing optical center requires a separate white field test environment and the accuracy is not high
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[0022] Since the traditional optical center detection method can only be carried out in a single white field uniform light source environment, the single white field uniform light source environment has certain limitations, and the accuracy is not high, which cannot improve the yield and efficiency of test products.
[0023] In order to solve the problem of low accuracy of the optical center test method in the prior art, an optical center test method is provided in this embodiment, based on a camera module, the camera module includes a lens and a photosensitive sensor, and the optical center test method is based on a camera module. The central testing method includes the following steps, such as figure 1 Shown:
[0024] Step S1, capture several features in the preset picture, the shapes of the features include regular graphics and / or irregular graphics;
[0025] Step S2, obtaining the center coordinates of each feature, calculating and fitting the center point coordinates of ...
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The present invention provides an optical center testing method, device and equipment, comprising the following steps: first grab a number of features in a preset picture, then obtain the coordinates of a number of features, and calculate and fit the center coordinates of a number of features and take it as the first coordinate; then rotate the camera module by 180 degrees, reacquire the coordinates of several features, and fit the center coordinates of several features through calculation and use it as the second coordinate; then analyze the first coordinates, the second coordinates and the image of the preset picture, the theoretical coordinates of several features are obtained by calculation and used as the calibration standard coordinates; finally, the first coordinates, the second coordinates are compared with the calibration standard coordinates, and by adjusting the lens Make the optical center of the lens coincide with the optical center of the photosensitive sensor. Compared with the traditional testing method, the present invention has lower requirements on the light source testing environment, can perform testing in a non-white field environment, and improves testing accuracy and product yield.
Description
technical field [0001] The invention relates to the technical field of cameras, in particular to an optical center testing method, device and equipment. Background technique [0002] With the advancement of science and technology, the application of cameras has become more and more extensive, and some industries have put forward higher requirements for the production process of cameras. The camera is mainly composed of a lens (LENS) and an image sensor (SENSOR), in which the lens is composed of several lenses; image sensors can be divided into two categories: CCD and CMOS. Light from the outside passes through the lens and is reflected on the image sensor to form an image. Theoretically, the center of the lens is aligned with the center of the image sensor, but due to the lack of precision of the processing equipment in the process of manufacturing, there is a certain deviation between the center of the lens and the center of the image sensor. The position of the lens duri...
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IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 王波张瑞赵新亚杜松章平齐书
Owner 重庆市天实精工科技有限公司