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Proceedings Paper

The design of visible system for improving the measurement accuracy of imaging points
Author(s): Qiu-sha Shan; Gang Li; Luan Zeng; Kai Liu; Pei-pei Yan; Jing Duan; Kai Jiang
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Paper Abstract

It has a widely applications in robot vision and 3D measurement for binocular stereoscopic measurement technology. And the measure precision is an very important factor, especially in 3D coordination measurement, high measurement accuracy is more stringent to the distortion of the optical system. In order to improving the measurement accuracy of imaging points, to reducing the distortion of the imaging points, the optical system must be satisfied the requirement of extra low distortion value less than 0.1%, a transmission visible optical lens was design, which has characteristic of telecentric beam path in image space, adopted the imaging model of binocular stereo vision, and imaged the drone at the finity distance. The optical system was adopted complex double Gauss structure, and put the pupil stop on the focal plane of the latter groups, maked the system exit pupil on the infinity distance, and realized telecentric beam path in image space. The system mainly optical parameter as follows: the system spectrum rangement is visible light wave band, the optical effective length is f ’=30mm, the relative aperture is 1/3, and the fields of view is 21°. The final design results show that the RMS value of the spread spots of the optical lens in the maximum fields of view is 2.3μm, which is less than one pixel(3.45μm); the distortion value is less than 0.1%, the system has the advantage of extra low distortion value and avoids the latter image distortion correction; the proposed modulation transfer function of the optical lens is 0.58(@145 lp/mm), the imaging quality of the system is closed to the diffraction limited; the system has simply structure, and can satisfies the requirements of the optical indexes. Ultimately, based on the imaging model of binocular stereo vision was achieved to measuring the drone at the finity distance.

Paper Details

Date Published: 20 February 2018
PDF: 8 pages
Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106971L (20 February 2018); doi: 10.1117/12.2314915
Show Author Affiliations
Qiu-sha Shan, Xi'an Institute of Optics and Precision Mechanics (China)
Gang Li, Xi'an Institute of Optics and Precision Mechanics (China)
Luan Zeng, Xi'an Institute of Optics and Precision Mechanics (China)
Kai Liu, Xi'an Institute of Optics and Precision Mechanics (China)
Pei-pei Yan, Xi'an Institute of Optics and Precision Mechanics (China)
Jing Duan, Xi'an Institute of Optics and Precision Mechanics (China)
Kai Jiang, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10697:
Fourth Seminar on Novel Optoelectronic Detection Technology and Application
Weiqi Jin; Ye Li, Editor(s)

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