Lens module group assembling method and lens module group

Abstract

The present invention provides a lens module assembling method, which includes the following steps: assembling in turn and fixing at least one optical component in a drawtube; encasing a component to be assembled in the position to be assembled of the drawtube; encasing a sticking part in a preset position of the drawtube, ensuring that the sticking part can contact the component to be assembled and the inner wall of the drawtube; heating and melting the sticking part by a heat source, and then solidifying the sticking part to ensure that a light filtering piece and the drawtube are jointed to form the lens module. By hot melting and solidifying the sticking part, the component to be assembled and the inner wall of the drawtube can be jointed fast, the even distribution of the sticking part between the component to be assembled and the inner wall of the drawtube can be ensured, the adhesion between the component to be assembled and the inner wall of the drawtube can be improved, and the failure probability of the lens module caused by the falling off of the component to be assembled can be reduced. In addition, the present invention also provides a lens module assembled by using the above assembling method.

Description

technical field [0001] The invention relates to an optical system, in particular to an assembly method of a lens module and the lens module. Background technique [0002] A lens module applied to a camera or an optical instrument is usually composed of a lens barrel and a lens mount equipped with optical elements. see figure 1 , is a lens module, which includes a lens barrel 10, a lens group 11, a spacer ring 12 and an optical filter 13, wherein the lens group 11, the spacer ring 12, and the optical filter 13 are sequentially fixed on the lens barrel 10 along the optical axis direction Inside, the filter 13 is arranged on the outermost side of the lens barrel 10 close to the object to be illuminated. [0003] During the assembly process of the lens module, the components to be assembled, such as optical filters, are generally fixed on the inner wall of the lens barrel by using a dispensing process. The specific method is: use a small glue dispensing device to apply glue d...

AI Technical Summary

Problems solved by technology

However, this method has many problems in automatic dispensing. For example, the dispensing device needs to be positioned multiple times, which is not only time-consuming, but also easily leads to inaccurate alignment of the dispensing device, making dispensing invalid and affecting the quality of dispensing, which in turn will cause It directly affects the quality of the lens module, because one of the reasons why the lens module fails during use is that the filter in the lens module falls off

During the lens module assembly process, especially when the filter is fixed on the inner wall of the lens barrel, if dispensing quality problems such as uneven dispensing and insufficient dispensing amount occur, it will seriously affect the relationship between the filter and the inner wall of the lens barrel. Adhesion between

Due to the weak adhesion between the filter and the inner wall of the lens barrel, the probability of lens module failure due to the loss of the filter during use will be greatly increased

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