The disclosure provides a double barrels lens, a lens module and an assembling method therefor. The double barrels lens includes a first barrel and a second barrel. The first barrel comprises a first end, a second end and a lens group received in the first barrel, and external screw threads are provided on an outer surface of the second end. The second barrel includes a first end surface, a second end surface and an inner surface, internal screw threads are provided on the inner surface. The internal screw threads of the second barrel are engaged with the external screw threads of the first barrel. A distance H between an optical center of the lens group and the second end surface of the second barrel, a focal length f of the lens group, and a correction coefficient α meet the expression: H = f + α, the correction coefficient is configured to correct a distance between the second end surface and an image sensor assembly, thereby enabling the focus of the lens group to be coincided with the center of an image sensor included in the image sensor assembly. The double barrels lens of the disclosure has a simple structure and a small EFL tolerance, and can accurately and quickly realize the coincidence of the focus of the lens with the center of an image sensor, thereby improving product yield after assembling with an image sensor assembly.
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机译:本公开提供了一种双桶透镜,透镜模块和其组装方法。双桶镜片包括第一筒和第二筒。第一筒包括第一端,第二端和接收在第一镜筒中的透镜组,并且在第二端的外表面上设置外部螺纹。第二筒包括第一端面,第二端面和内表面,内部螺纹设置在内表面上。第二筒的内螺纹与第一桶的外螺纹接合。透镜组光学中心与第二镜筒的第二端面之间的距离H,透镜组的焦距F,校正系数α满足表达式:H = F +α,配置了校正系数为了校正第二端面和图像传感器组件之间的距离,从而使透镜组的焦点能够与包括在图像传感器组件中的图像传感器的中心重合。本公开的双桶镜片具有简单的结构和小的EFL公差,并且可以准确地快速地实现透镜的焦点与图像传感器的中心的重合,从而通过图像传感器组件组装后提高产品产量。
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