Lens module assembly

Abstract

The invention relates to a lens module assembly. The lens module assembly is cooperatively used with a photosensitive imaging sensor. The lens module assembly comprises a lens cone, a lens assembly accommodated in the lens cone and a lens seat for mounting the lens cone; the lens cone is inserted into the lens seat from one side of the lens seat; the other side of the lens seat is provided with a positioning hole; the positioning hole is tightly and cooperatively sleeved on the periphery of the photosensitive imaging sensor in a clamping manner; and when the positioning hole is sleeved on the periphery of the photosensitive imaging sensor in a clamping manner, the optical axis of the lens assembly passes through the center of an imaging area of the photosensitive imaging sensor. According to the lens module assembly provided by the invention, the positioning hole which is in tight and cooperative clamping sleeving with the photosensitive imaging sensor is formed on the lens seat, as a result, the optical axis of the lens assembly passes through the center of the imaging area of the photosensitive imaging sensor, and therefore, when the optical axis is positioned, high-degree coincidence between the optical system optical axis of the lens module assembly and the center of the imaging area of the photosensitive imaging sensor can be realized precisely and fast. The lens module assembly of the invention is advantageous in simple structure, easy assembly, greatly improved production efficiency and yield and reduced production cost, is suitable for the field of lens module assemblies of which optical axes are required to be positioned accurately.

Description

technical field [0001] The invention relates to a lens module, in particular to a lens module capable of precisely positioning the optical axis of a lens optical system within the imaging area of ​​a photosensitive imaging sensor. Background technique [0002] Lens modules are widely used in cameras and optical instruments. The existing common lens module generally includes a lens barrel, a lens mount for installing the lens barrel, and a lens optical system composed of lens groups, optical filters and other components. [0003] During the assembly process, how to realize the high coincidence of the optical axis of the lens optical system with the center of the imaging area of ​​the photosensitive imaging sensor on the PCB (Printed Circuit Board, printed circuit board) has always been a difficult problem. [0004] Because, for ordinary lens modules, in order to achieve the overlap between the two, it mainly depends on the placement accuracy of the photosensitive imaging sen...

AI Technical Summary

Problems solved by technology

However, traditional lens modules are far from being able to meet this precision requirement. Therefore, in actual production practice, only the method of selection and mutual matching is adopted, resulting in low production efficiency, low yield, and high production costs.

Images