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Method and device for testing phase detection automatic focusing performance

An autofocus and phase detection technology, applied in TV, electrical components, image communication, etc., can solve problems such as reducing product reputation, the actual best clear position of PDAF returned data is too large, and there is no PDAF return data analysis, etc. Factory quality, avoid the effect of influence

Inactive Publication Date: 2019-11-08
KUNSHAN Q TECH CO LTD
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  • Claims
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Problems solved by technology

[0003] However, the prior art does not analyze the PDAF return data, which leads to the problem that the PDAF return data (theoretical clear position) and the actual best clear position are too different after some camera modules leave the factory.
[0004] Because this problem will not only affect the user experience, but may even reduce the reputation of the product, therefore, for those skilled in the art, it is of great significance to study a method that can effectively control the performance of phase detection autofocus

Method used

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  • Method and device for testing phase detection automatic focusing performance
  • Method and device for testing phase detection automatic focusing performance

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Embodiment Construction

[0061] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0062] It should be noted that in the description of this application, the orientation or positional relationship indicated by the terms "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, or the conventional placement of the inventive product during use. Orientation or positional relationship is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as lim...

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Abstract

The invention discloses a method and device for testing phase detection automatic focusing performance, a storage medium and electronic equipment, and relates to the technical field of product performance test. The method comprises the following steps: respectively determining comparison test points on the left side and the right side of a target focusing position returned by a camera module; andthen comparing the modulation degree MTF corresponding to the comparison test point with the modulation degree MTF value corresponding to the target focusing position to obtain a position relationshipbetween the target focusing position and the optimal focusing position, thereby obtaining a test result of the phase detection automatic focusing performance of the camera module. The phase detectionautomatic focusing performance of the camera module can be tested, so that the delivery quality of the camera module is ensured, and the influence of the quality problem of the camera module on the use experience of a user and the public praise of a product is avoided.

Description

technical field [0001] The present application relates to the technical field of product performance testing, in particular, to a testing method, device, storage medium and electronic equipment for phase detection autofocus performance. Background technique [0002] At present, many camera modules need to do PDAF (Phase Detection Auto Focus). Its principle is to reserve some shaded pixels on the photosensitive element for phase detection, and then through The distance and its change etc. determine the offset value of the focus, so as to achieve accurate focus. [0003] However, the prior art does not analyze the PDAF return data, which leads to the problem that the PDAF return data (theoretical clear position) and the actual best clear position are too different after some camera modules leave the factory. [0004] Since this problem will not only affect user experience, but may even reduce product reputation, it is of great significance for those skilled in the art to stud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/002
Inventor 许岳峰
Owner KUNSHAN Q TECH CO LTD
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