Fixed optical assembly, periscopic optical zoom module and assembling methods of fixed optical assembly and periscopic optical zoom module

Abstract

The present invention provides a fixed optical assembly. The fixed optical assembly comprises the following components of: a light turning element having a reflecting surface for turning incident light, an incident surface, and an exit surface; at least one fixed lens; and a fixed assembly shell which comprises a light turning element mounting part and at least one lens barrel part, wherein the at least one fixed lens is mounted on the inner side surface of the at least one lens barrel part, the light turning element mounting part is arranged at one end, close to the reflecting surface, of the lens barrel part. The light turning element is fixed on the light turning element mounting part, and the position of the light turning element is determined by active calibration. The invention further provides an assembling method of the fixed optical assembly, a corresponding periscopic optical zoom module and an assembling method of the periscopic optical zoom module. The manufacturing tolerance and the assembly tolerance of the components of the fixed optical assembly and the periscopic optical zoom module can be compensated through active calibration, so that the imaging quality of an optical system is improved.

Description

technical field [0001] The invention relates to the field of camera module technology, in particular, the invention relates to a fixed optical assembly for a periscope module, a periscope optical zoom module and their assembly methods. Background technique [0002] With the improvement of living standards, consumers have higher and higher requirements for camera functions of terminal devices such as mobile phones and tablets. They not only require effects such as background blur and night shooting, but also demand telephoto. A terminal device that clearly captures distant images. [0003] In order to achieve shooting at different distances, the current terminal equipment on the market realizes zoom shooting by using a wide-angle lens + a telephoto lens to form an array module. However, since the lens is usually a fixed-focus lens, its focal length cannot be adjusted. The intercepted images are digitally zoomed by algorithms such as difference, and the imaging quality of the...

AI Technical Summary

Problems solved by technology

There is a phenomenon of cumulative deterioration of the errors of the above-mentioned components that affect the resolution, and this cumulative error will continue to increase with the increase in the number of lenses

For the periscope continuous optical zoom module, its structure is more complicated, and the accumulation of errors affecting the resolution of each optical element is more difficult to control

On the other hand, since the periscope camera module has a more complicated structure, during its assembly process, the assembly process of each structural part of the module may also introduce new errors into the optical system (which may be called assembly error ), this type of assembly error may cause the resolution of the final imaging of the module to fail to meet the established specifications, resulting in a low yield rate of the module factory

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