Optical lens surface defect detection device based on dark field microscopic imaging principle

Abstract

The invention discloses an optical lens surface defect detection device based on a dark field microscopic imaging principle, and is used for detecting optical lens surface defects. The device comprises a cabinet playing a shielding role, a reflection light source module and a transmission light source module which are arranged in the cabinet and can automatically adjust the height, an industrial camera used for collecting an optical lens defect image, a light source control module used for controlling the two light source modules, and a lens clamp used for supporting a to-be-detected lens, a conveying module used for conveying the lens clamp to a lens detection station and a general control module used for general control and pattern analysis; transmission detection and reflection detection of the lens are achieved, detection is more comprehensive, the consistency of defect image analysis results collected by an industrial camera is good, reliability is high, the height of the light source module can be automatically adjusted, halo removal can be achieved, and the detection accuracy is improved; the product is high in overall automation degree and good in reliability, manual participation is reduced, the detection cost is effectively reduced in industrial application, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to an optical lens surface defect detection device, in particular to an optical lens surface defect detection device based on the principle of dark field microscopic imaging. Background technique [0002] Optical lens is an indispensable key device in the optical system. During the processing of optical lenses, they have to go through "cold processing" processes such as cutting, rough grinding, polishing, and coring before they can be initially formed. During this process, affected by factors such as external vibration, power grid fluctuations, human interference, cutting edge passivation, uneven size of grinding and polishing particles, and unclean cleaning, the surface of the lens is prone to scratches, scratches, pitting, and broken edges and other surface defects. These surface imperfections affect the optical performance of the lens, which in turn affects the performance of the entire optical system. Therefore, optical len...

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Problems solved by technology

Although the patent realizes partial automation, the degree of automation is limited

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