Fast collimation method for light path of stereoscopic space laser
A technology of three-dimensional space and laser spot, applied in the direction of laser welding equipment, optics, optical components, etc., can solve problems such as coordinate system distortion, and achieve the effect of high precision, fast speed and easy adjustment
Inactive Publication Date: 2014-07-30
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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[0005] The invention solves the problem of distortion of the coordinate system between the mirror motor and the near and far field images, and provides a fast alignment method of the laser light path in a three-dimensional space
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[0027] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.
[0028] see figure 1 , figure 1 It is a schematic diagram of the optical path of the laser in the stereo space of the present invention, and the method for fast alignment of the optical path of the laser in the stereo space of the present invention comprises the following steps:
[0029] ①Place near-field CCD1 and far-field CCD2 at the near-field and far-field positions of the laser optical path in three-dimensional space respectively to collect near- and far-field laser spot images. The near-field is taken at a specific position in the optical path, and the far-field is taken at the focal point of the beam;
[0030] ②The first reflector 4 and the second reflector 5 are arbitrarily selected in the three-dimensional space laser light path, and horizontal motors and pitch mo...
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A fast collimation method for a light path of stereoscopic space laser comprises the following steps of 1, respectively placing a near field CCD (charge coupled device) and a far field CCD at the near field and far field positions of the light path of the stereoscopic space laser; 2, freely selecting a first reflector and a second reflector in the light path of the stereoscopic space laser, wherein a horizontal motor and a pitch motor are respectively arranged on each reflector to control the direction of the reflectors and regulate the pitching; 3, arranging a computer comprising image collection treatment software and motor control software; 4, resolving a 4*4 dimensional linear matrix between rotary amounts of the four motors and the center variation of laser spots of the near field and far field; (5) resolving an inverse matrix; (6) calculating the rotary steps and direction needed by each motor by the computer; (7) driving the motors to rotate by the computer and realizing the fast collimation of the light path of the stereoscopic space laser. The fast collimation method has the characteristics of easiness in regulation, fast sped and high precision.
Description
technical field [0001] The invention relates to a laser light path in a three-dimensional space, and is a fast collimation method for the laser light path in a three-dimensional space. Background technique [0002] The schematic diagram of laser light path in three-dimensional space is as follows: figure 1 As shown, if the first reflector 4 and the second reflector 5 are located on the upper platform, and the near-field CCD1 and far-field CCD2 collect near-far-field laser spot images on the lower platform, resulting in a gap between the mirror motor and the near-far-field image Coordinate system distortion problem. [0003] Traditional auto-collimation technology cannot solve the problem of coordinate system distortion. In the absence of coordinate system distortion, the rotation of the NFX motor will only cause the near-field spot to move in the X direction. Correspondingly, the rotation of the NFY motor will only cause the near-field spot to move in the Y direction, the...
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IPC IPC(8): B23K26/04
CPCG02B27/30
Inventor 秦海棠刘代中欧阳小平王杨
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI