Method for identifying positive and negative orientations of film coating surface of optical film filter

Abstract

The invention discloses a method for identifying positive and negative orientations of a film coating surface of an optical film filter, which comprises the following steps: placing the optical film filter to be identified under a CCD or CMOS pick-up device; evenly irradiating the optical film filter by adopting rays which cannot fully transmit the optical film filter to be identified and are inclined in acute angles formed by the irradiating rays and the optical film filter; picking up an image through the CCD or CMOS pick-up device and reading image information of the edge of the optical film filter; comparing the read image information of the edge of the optical film filter and a reference image determined by an experiment through a computer, and judging a identification result; and outputting the identification result of the positive and negative orientations of the film coating surface of the optical film filter through the computer. The method for identifying the positive and negative orientations of the film coating surface of the optical film filter realizes automatic identification of equipment, reduces the production cost, totally eliminates the injury to the vision of workers, and ensures the working safety of the workers.

Description

technical field [0001] The invention relates to a method for identifying the front and back orientations of the coating surface of an optical thin film filter, in particular to a method for identifying the front and back orientations of the coating surface of an optical multilayer thin film filter. Background technique [0002] In the manufacturing process of optical instruments, it is necessary to identify the front and back sides of the coating surface of optical parts (such as lenses, filters, etc.) with optical films. Negative detection. The result of this identification method is low production efficiency, poor quality control consistency, and in this way of working, it will cause adverse consequences of workers' vision loss. Therefore, it is very necessary to realize the automatic identification of the front and back orientations of the coating surface of the optical thin film filter. Contents of the invention [0003] The technical problem to be solved by the pres...

AI Technical Summary

Problems solved by technology

The result of this identification method is low production efficiency, poor quality control consistency, and in this way of working, it will cause adverse consequences of workers' vision loss