Cone film thickness testing device and manufacture method thereof

Abstract

The invention relates to a cone film thickness testing device which comprises a testing base and a probe fixing seat fixed on the testing base. The testing base comprises a testing bottom plate and a lateral supporting plate fixed on the testing bottom plate, and the probe fixing seat comprises a sleeve, a fixed ring seat and a fixing clamping ferrule. The testing bottom plate is used for placing the cone to be tested, the lateral supporting plate is used for fixing the fixed ring seat, and the fixing clamping ferrule is fixed on the fixed ring seat. The fixing clamping ferrule and the fixed ring seat are used for being matched with the sleeve which is used for fixing a probe of a film thickness testing instrument to enable the probe of the film thickness testing instrument to cling to the surface of the cone to be tested. By means of the cone film thickness testing device, the change of the testing benchmark caused by moving the probe of the film thickness testing instrument is avoided, and testing accuracy is improved. The invention further relates to a manufacture method of the cone film thickness testing device.

Description

technical field [0001] The invention relates to a testing device and a manufacturing method thereof, in particular to a cone film thickness testing device and a manufacturing method thereof. [0002] Background technique [0003] Coating is an indispensable process in the production of some products, and the thickness of the film layer is an important indicator to measure the quality of the film layer. In the optical system, the focus deviation and tilt error caused by the uneven thickness of the film layer are the main factors that lead to the unevenness of the product. main reason for eligibility. In the production process of some products, it greatly affects the reliability and service life of the product, especially when considering the installation, appearance structure and external dimensions of the product, it is necessary to coat different shapes of surfaces. [0004] For the cone, coating the inner surface of the cone and monitoring its film thickness, in order...

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Problems solved by technology

[0004] For the cone, coating the inner surface of the cone and monitoring its film thickness, in order not to damage the film quality, currently mainly rely on human experience and vision to judge whether the film thickness meets the requirements, there is no quantitative control The thickness of the film layer is monitored, so that the qualification of the coated product cannot be well monitored during the production process, and only the same batch of cone film layers are sampled, so it is impossible to ensure that each cone film layer is qualified. Flow the unqualified cones of the film layer into the next process, and the unqualified phenomenon will appear after the next process is completed, which will affect the pass rate of the product, increase the production cost, and waste time

[0005] In addition, when testing the thickness of the film layer on the surface of a curved cone, the contact measurement is basically used, which cannot guarantee 100% contact between the probe and the surface of the cone, and in the process of measurement, it is basically achieved by moving the probe. The purpose of the test, however, the reference will change when the film thickness tester is moved, which will affect the test accuracy

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