Drawtube, lens module with the same, and lens module assembling method

Abstract

The invention provides a drawtube used for holding an optical element. The drawtube comprises the side wall of the drawtube and the bottom part of the drawtube. The side wall of the drawtube and the bottom part of the drawtube are provided with an inner surface; the bottom part of the drawtube is provided with a diaphragm hole. The drawtube is provided with at least one groove; the at least one groove extends from the inner surface of the side wall of the drawtube to the inner surface of the bottom part of the drawtube and stops at the edge of the diaphragm hole at the bottom part of the drawtube. The arrangement of the groove leads a lens to be capable of counteract a lens deformation caused by absorption when being assembled into the drawtube by adopting a vacuum absorption mode, thus ensuring the lens to be more smoothly stuck with the bottom part of the drawtube; and glue is pointed on the location of the groove after all the lenses are assembled, thus being capable of leading the glue to flow to the bottom part of the drawtube from the groove, thereby being capable of fixing a plurality of lens into the drawtube. The invention also provides a lens module provided with the drawtube and an assembling method of the lens module.

Description

technical field [0001] The invention relates to the field of optical systems, in particular to a lens barrel, a lens module with the lens barrel and an assembly method of the lens module. Background technique [0002] With the multi-functional development of electronic products, lens modules are widely used in consumer electronic products such as mobile phones, notebook computers, digital cameras, and personal digital assistants. While pursuing multi-functionality, people also hope that electronic products have excellent image effects, that is, lens modules are required to have high image quality. [0003] The existing optical lens module structure generally includes optical components such as a plurality of lenses, aperture plates, and filters housed in the lens barrel, and a spacer ring for controlling the distance between the optical components. Since the lens barrel is usually a cylindrical structure, each optical element is usually installed in the lens barrel in seque...

AI Technical Summary

Problems solved by technology

Therefore, when using a thin lens, the vacuum nozzle will deform the lens slightly, so when the lens is assembled into the lens barrel, it is often impossible to insert the lens smoothly, and the lens group cannot be well placed in the lens barrel. Rely on

Moreover, when the first lens is inserted in an inclined manner, the lens cannot be flattened with the plane at the bottom of the lens barrel, thus often causing the failure of the entire lens module and causing all the optical elements in it to be discarded, resulting in assembly failure. Great waste of process

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