Stress analysis system for curved surface inspection materials

Abstract

A stress analysis system for a curved surface inspection material comprises: a light source (10) for emitting an illumination beam; a polarizer (20), a first wavefront modulation lens (30), the curvedsurface inspection material, a second wavefront modulation lens (40), a polarization analyzer (50) and an image sensor (60) which are sequentially arranged on a light path of the illumination light beam. The thickness distribution of the first wavefront modulation lens (30) and the distance from the first wavefront modulation lens (30) to the curved surface test material satisfy the following conditions: the wavefront of the illumination beam reaching the incident surface of the curved surface test material is consistent with the incident surface of the curved surface test material; the imagesensor (60) is used for acquiring interference imaging of the illumination light beam; the device further comprises a processor (70) which is used for obtaining interference images collected by the image sensor (60) and detecting the stress distribution of the curved surface inspection material according to the interference images. The stress analysis system of the curved surface inspection material is more accurate.

Description

technical field [0001] The invention relates to the technical field of industrial testing, in particular to a stress analysis system for curved surface material testing. Background technique [0002] With the rapid development of the mobile Internet industry, smart mobile terminal manufacturers and products emerge in an endless stream, and the appearance and material of the smart mobile terminal housing are also constantly improving. At present, mainstream mobile phone manufacturers have launched terminal products based on 3D curved glass, which have been favored by many mobile phone manufacturers and consumers because of their advantages such as transparency and cleanliness, anti-fingerprint, anti-glare, easy to cooperate with flexible OLED screens, and more ergonomics. of favor. [0003] However, the processing process of 3D curved glass needs to go through the "hot bending" process of glass. The glass produced by this process will have residual stress to varying degrees...

AI Technical Summary

Problems solved by technology

[0005] Based on this, in order to solve the technical problem of inaccurate stress distribution of 3D curved glass detected by interference imaging in the prior art, a stress analysis system for curved surface inspection is proposed.

Images