Method for correcting position of photosensitive element

Abstract

The invention provides a method for correcting the position of a photosensitive element, and the photosensitive element is disposed on a substrate of a camera module group, and the method comprises the steps: enabling a light source to be aligned with a lens, and enabling light emitted by the light source to irradiate the photosensitive element through the lens; moving the photosensitive element on the substrate to enable the light intensity value of the central feature point of the photosensitive element to be a critical value, and enabling the central feature point to intersect with the optical axis of the lens; and adjusting the photosensitive element so that the light intensity values of the multiple feature points on the photosensitive element are enabled to be greater than or equal to the preset light intensity value, wherein the preset light intensity value is the light intensity value measured when the photosensitive element is aligned with the position of the lens. Through adoption of the method provided by the invention, the position correction of the photosensitive element is realized, so that the optimal imaging position of the lens and the photosensitive element is found, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of camera modules, in particular to a method for correcting the position of a photosensitive element. Background technique [0002] The camera module includes a lens and a photosensitive element. The position calibration of the photosensitive element and the lens, that is, the photosensitive element is perpendicular to the optical axis of the lens, and the center of the photosensitive element intersects the optical axis, is usually called the leveling of the photosensitive element (adjusting the level of the photosensitive element). [0003] The leveling of the photosensitive element and finding the best imaging position have a crucial impact on the imaging effect. If the photosensitive element cannot be leveled or is not in the best position for imaging, the final imaged photo may have defects such as distortion and missing part of the image . [0004] The leveling of the photosensitive element and the ac...

AI Technical Summary

Problems solved by technology

The current technology is not easy to find the position where the center of the photosensitive element intersects the optical axis, and at least 5 defocus curves need to be output when adjusting the photosensitive element to be perpendicular to the optical axis of the lens, and each defocus curve needs to move the photosensitive element, which is complicated to operate

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