Design of a detection system for multiple optical-axis parallelism in an electro-optical sighting telescope
-
1.
Key Laboratory of Optoelectronics Information Technology of Ministry of Education, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
-
Received Date:
2012-11-06
Accepted Date:
2012-11-18
-
Abstract
In order to achieve accurate measurement of multiple optical-axis parallelism of an electro-optical sighting telescope, a detection system for multiple optical-axis parallelism was designed based on a large-calibre off-axis concave parabolic mirror. The whole system, including optical imaging system, controlling platform and image acquisition and processing system, was designed. Using discrete cosine transform coefficients as evaluation standard, high-precise auto-focusing was achieved. Using a large-calibre off-axis concave parabolic mirror, the demands of various kinds of electro-optical sighting telescopes measurement were meeted. The automatic measurement of optifcal-axis parallelism among light axis, far-infrared axis and near-infrared axis was achieved. The actual measurement was carried out for a certain electro-optical sighting telescope. When the deviation angle among multiple optical-axis was between 0.04mrad and 0.08mrad, the relative error was less than 13%, considered as the limit of system detection angle. The results showe that the detecting system decreases the error of human factor and is universal and high efficient. The accuracy of measurement also meet the requirements.
-
-
References
|
[1]
|
LIU Y,KUANG Z L. Electro-optical sights for light weapons[J]. Journal of Applied Optics,2006,27(3): 171-176 (in Chinese). |
|
[2]
|
BAI G X,AN Zh Y,XIAO Z J. Research on detection system for multi-axes parallelism of laser sighting telescope[J]. Journal of Changchun University of Science and Technology(Natural Science Edition),2012,35(2):21-25 (in Chinese). |
|
[3]
|
YE L,SHEN X H,LIU Z X. Boresight between laser rangefinder and IR sensor[J]. Journal of Applied Optics,2007,28(6): 760-763(in Chinese). |
|
[4]
|
LING J,LIU B Q,ZHAO X L. The comparison and discussion of several testing method about optical-axis parallelism[J]. Journal of Applied Optics,2003,24(1): 43-45(in Chinese). |
|
[5]
|
YANG W Zh,JING H W,WU Sh B,et al. Visible and infrared optical axis parallelism tester[J]. Infrared and Laser Engineering,2010,39(5): 902-904(in Chinese). |
|
[6]
|
SONG Y Y,WANG K W,HU L,et al. Parallelism detecting of optical axes for electro-optical system[J]. Journal of Applied Optics,2009,30(5): 802-805(in Chinese). |
|
[7]
|
LUO X,CHEN P F,WANG Y. Analysis of 90 off-axis parabolic mirror focal spot characteristic[J]. Acta Optica Sinica,2009,29(3): 682-687(in Chinese). |
|
[8]
|
MA Sh B,YANG H,YANG Zh J,et al. Multi-spectral axes parallelism calibration of electro-optical system[J]. Journal of Applied Optics,2011,32(5): 917-921(in Chinese). |
|
[9]
|
LEE M E,CHEN Ch F,LIN T N,et al. The application of discrete cosine transform (DCT) combination with the nonlinear regression routine on optical auto-focusing based[C]//Digest of Technical Papers International Conference on Consumer Electronics,2009(ICCE'09). Las Vegas,NV,USA:IEEE Press,2011:1-5. |
|
[10]
|
LIU Z Y,LI L,HU B T. Focusing property for ultra-short pulse laser reflected by off-axis parabolic mirrors[J]. Laser Technology,2012,36(5): 567-661(in Chinese). |
|
[11]
|
ROBERT L. OpenCV 2 computer vision application programming cookbook[M]. Birmingham,UK: Packet Publishing Ltd,2011: 1-85. |
|
[12]
|
HUANG Zh H,ZHU M,CAI H Y,et al. Speckle correlation used in measurement of elliptical gaussian beam divergence[J]. Acta Optica Sinica,2010,30(10): 2918-2922(in Chinese). |
-
-
Proportional views
-
Map
DownLoad: