Correction method based on two-dimensional galvanometer curved surface projection
A technology of two-dimensional galvanometer and curved surface projection, which is applied in image data processing, instruments, calculations, etc., and can solve the problems of high price of three-dimensional dynamic focusing galvanometer system, inability of two-dimensional galvanometer to focus dynamically, and high cost.
Pending Publication Date: 2022-02-01
苏州金橙子激光技术有限公司
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[0002] The price of the 3D dynamic focusing galvanometer system is very high, such as ScanLab in Germany, GSI and NutField in the United States are all very expensive
In contrast, the price of the two-dimensional galvanometer is relatively cheap, and it can be considered to use the two-dimensional galvanometer instead of the three-dimensional galvanometer for operation, but we know that the two-dimensional galvanometer can accurately mark or laser in a certain range on only one plane. Indication, because the two-dimensional galvanometer cannot be dynamically focused, the distance between the point on the three-dimensional surface and the plane where the galvanometer is located is different, which will cause the distortion of the laser pointer on the three-dimensional surface
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0014] The two-dimensional vibrating mirror is driven by the X--Y axis motor to deflect the reflector to realize the functions of plane scanning and marking, so the two-dimensional vibrating mirror can be on a certain plane to achieve accurate scanning and marking. In the present invention , set this plane as the reference plane, use the traditional classic surface envelope algorithm to perform envelope calculation on a given surface on any given plane figure on the reference plane, and obtain the three-dimensional shape of the plane figure on this surface. Usually the graphic indicated by marking is to discretize the outline of the graphic, and then the galvanometer laser makes a linear motion between points. a one-to-one mapping f 1 , map the point set S composed of points on the contour of t...
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The invention provides a correction method based on two-dimensional galvanometer curved surface projection, and relates to the technical field of two-dimensional galvanometer application, and the method comprises the following steps: S1, a point set of any given plane figure is mapped to a three-dimensional curved surface, and a three-dimensional point set is obtained; s2, the plane where any given plane figure is located is set as a reference plane, a test figure is given on the reference plane, the range from the two-dimensional galvanometer to the perpendicular direction of the lowest point of the three-dimensional curved surface is layered and divided into a plurality of indication planes parallel to the reference plane, and correction parameters of each indication plane are calculated; and S3, for any plane figure, the three-dimensional point set in the S1 is converted into a two-dimensional point set according to the correction parameter of each layer of indication plane in the S2 by using the three-dimensional point set in the S1. According to the invention, the correction of the curved surface projection of the two-dimensional galvanometer is realized, so that the indication effect of a three-dimensional curved surface can be realized through the two-dimensional galvanometer, the operation is simple, and the cost is greatly reduced.
Description
technical field [0001] The invention relates to the technical field of application of two-dimensional galvanometers, in particular to a correction method based on projection of curved surfaces of two-dimensional galvanometers. Background technique [0002] The price of the three-dimensional dynamic focusing galvanometer system is very high, such as ScanLab in Germany, GSI and NutField in the United States, all of which are very expensive. In contrast, the price of the two-dimensional galvanometer is relatively cheap, and it can be considered to use the two-dimensional galvanometer instead of the three-dimensional galvanometer for operation, but we know that the two-dimensional galvanometer can accurately mark or laser in a certain range on only one plane. As the two-dimensional vibrating mirror cannot be dynamically focused, the distance between the points on the three-dimensional curved surface and the plane where the vibrating mirror is located is different, which will cau...
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Login to View More IPC IPC(8): G06T3/00G06T5/00G06T7/64
CPCG06T7/64G06T2207/20068G06T3/08G06T5/80
Inventor 邱勇江帆
Owner 苏州金橙子激光技术有限公司