Digital incision instrument inspection method and system based on machine vision
A machine vision and inspection method technology, applied in the testing of machines/structural components, instruments, optical instruments, etc., can solve problems such as errors, and achieve the effect of reducing losses, simple calculation methods, and easy implementation.
Inactive Publication Date: 2021-04-02
南京臻恒光学仪器有限公司
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[0005] The purpose of the present invention is to provide a digital knife-edge instrument inspection method and system based on machine vision, to solve the error problem caused by the traditional knife-edge instrument equipment using the naked eye for shadow judgment
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[0065] figure 1 The flow chart of the measurement process of the digital knife-edge instrument for this method. Such as figure 1 shown. The specific method steps are as follows:
[0066] (1) Turn on the computer power supply, CCD power supply, control box power supply, and regulated power supply to ensure that all components are working normally. After the computer is started, enter the digital knife-edge instrument software working interface;
[0067] (2) Adjust the test piece so that the image returned by the self-collimation of the test piece falls on the knife-edge position of the digital knife-edge instrument. At this time, the CCD Chinese Academy of Sciences observes the self-collimation image of the test piece;
[0068] (3) Adjust the test piece to make the image illumination on the CCD phase surface uniform;
[0069] (4) By selecting different aperture apertures and adjusting the brightness of the light source, the illumination of the CCD image plane image is moder...
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The invention discloses a digital incision instrument inspection method and system based on machine vision. The method comprises the following steps: designing an imaging system; controlling and feeding back a motion mechanism; acquiring a shadow image; processing the shadow image; and visual display of measurement. The system comprises the following modules: a knife edge test module used for completing motion control, template adjustment and acquisition of a three-dimensional translation stage, a radial wave difference module used for analyzing and calculating an image to obtain a maximum high-low difference value and a root-mean-square roughness value of wave aberration, a three-dimensional wave aberration module used for displaying distribution diagrams with direction angles of 0 degreeand 37 degrees and pitch angles of 30 degrees and 90 degrees, and a test conclusion module used for storing a series of images and wave aberration values and carrying out necessary explanation. The invention provides a technical and digital method for the detection of the knife edge instrument, is applied to the processing of large-aperture and high-precision mirror surfaces, quantitatively measures the knife edge instrument, and improves and optimizes the traditional optical test method.
Description
technical field [0001] The invention belongs to the field of optical parts inspection, in particular to a digital knife-edge instrument inspection method and system based on machine vision. Background technique [0002] In order to improve the imaging quality, in optical processing and inspection, it is necessary to measure the surface deviation of the surface of optical parts to control the curvature and shape of the surface. More than 100 years ago, due to the lack of effective inspection methods, in the process of processing optical parts of astronomical instruments such as parabolic mirrors, it took a lot of labor to obtain a satisfactory surface shape. Optical processing personnel must have very rich experience and superb skills. Skill. Even so, it takes luck to process high-quality optical parts, and the quality of optical parts is largely the result of chance. There is also a lack of effective evaluation methods for the aberration of the optical system after design,...
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IPC IPC(8): G01M11/02
CPCG01M11/0257
Inventor 肖光辉肖光华李果
Owner 南京臻恒光学仪器有限公司