频闪激光光栅条纹实时投射系统

设计了一种高速扫描频闪激光光栅条纹实时投射系统。系统通过现场可编程门阵列(FPGA)实时监测光电探测器信号并控制激光器的调制输出，使高速旋转的多面棱镜与线激光器调制信号精确配合产生稳定、清晰、精密的频闪激光光栅条纹。系统结合了光栅条纹整体投射和线激光光源高精度的特性，具有刷新速度快、条纹分布精度高的特点，且亮度、频率、脉宽、相移可动态编程实时控制。应用该系统对微小尺寸器件进行了测量，获得了准确反映被测器件三维形貌的相位和特征点数据。该系统在高精度快速三维形貌测量中，尤其是工业现场精密器件在线三维检测场合具有广泛的应用前景。

Abstract

A high-speed scanning real-time stroboscopic laser fringe-pattern projection system is designed. A high-speed rotating polygon mirror and a line-structured laser cooperate to produce stable and unambiguous stroboscopic fringe patterns. The system is realized by using field programmable gate array (FPGA) to monitor photoelectric-detector signal and control the output modulation signal of laser accurately in real time. The system combines the overall projection of grating with the high accuracy of the line-structured laser light source. The projected fringe patterns have high refresh rate and high precision. In addition, the intensity, frequency, pulse width and phase shift can be controlled in real time by dynamic programming. A small size device is measured by using the proposed system, and the corresponding accurate phase and characteristic points that can show the three-dimensional shape are obtained. The proposed system shows a broad application prospect for fast three-dimensional shape precision measurements, particularly in the industrial field of three-dimensional online detection for precision devices.

参考文献

[1] S S Gorthi, P Rastogi. Fringe projection techniques: whither we are [J]. Opt & Lasers in Eng, 2010, 48(2): 133-140.

[2] Z Wang, D A Nguyen, J C Barnes. Some practical considerations in fringe projection profilometry [J]. Opt & Lasers in Eng, 2010, 48(2): 218-225.

[3] S Zhang. Recent progresses on real-time 3D shape measurement using digital fringe projection techniques [J]. Opt & Lasers in Eng, 2010, 48(2): 149-158.

[4] Bin Liu, Peng Wang,Yong Zeng, et al.. Measuring method for micro-diameter based on structured-light vision technology [J]. Chin Opt Lett, 2010, 8(7): 666-669.

[5] S Lei, S Zhang. Digital sinusoidal fringe pattern generation: Defocusing binary patterns versus focusing sinusoidal patterns [J]. Opt & Lasers in Eng, 2010, 48(5): 561-569.

[6] Y Wang, S Zhang. Comparison of the squared binary, sinusoidal pulse width modulation, and optimal pulse width modulation methods for three-dimensional shape measurement with projector defocusing [J]. Appl Opt, 2012, 51(7): 861-872.

[7] 张启灿, 苏显渝. 动态三维面形测量的研究进展[J]. 激光与光电子学进展, 2013, 50(1): 010001.

Zhang Qican, Su Xianyu. Research progress of dynamic three-dimensional shape measurement [J]. Laser & Optoelectronic Progress, 2013, 50(1): 010001.

[8] Y Wang, S Zhang. Optimal pulse width modulation for sinusoidal fringe generation with projector defocusing [J]. Opt Lett, 2010, 35(24): 4121-4123.

[9] S Ma, C Quan, R Zhu, et al.. A fast and accurate gamma correction based on Fourier spectrum analysis for digital fringe projection profilometry [J]. Opt Commun, 2012, 285(5): 533-538.

[10] 肖焱山, 曹益平, 武迎春, 等. 基于傅里叶频谱分析的相位测量轮廓术系统Gamma非线性校正方法[J]. 光学学报, 2012, 32(12): 1212004.

Xiao Yanshan, Cao Yiping, Wu Yingchun, et al.. Gamma nonlinearity correction based on Fourier spectrum analysis for phase measuring profilometry [J]. Acta Optica Sinica, 2012, 32(12): 1212004.

[11] 郑东亮, 达飞鹏. 提高数字光栅投影测量系统精度的Gamma校正技术[J]. 光学学报, 2011, 31(5): 0512003.

Zheng Dongliang, Da Feipeng. Gamma correction method for accuracy enhancement in grating projection profilometry [J]. Acta Optica Sinica, 2011, 31(5): 0512003.

[12] L Huang, Q Kemao, B Pan, et al.. Comparison of Fourier transform, windowed Fourier transform, and wavelet transform methods for phase extraction from a single fringe pattern in fringe projection profilometry [J]. Opt & Lasers in Eng, 2010, 48(2): 141-148.

[13] E H Kim, J Hahn, H Kim, et al.. Profilometry without phase unwrapping using multi-frequency and four-step phase-shift sinusoidal fringe projection [J]. Opt Express, 2009, 17(10): 7818-7830.

[14] 王焘, 陈文静, 钟敏, 等. 基于结构光投影的二维S变换轮廓术[J]. 光学学报, 2012, 32(12): 1207002.

Wang Tao, Chen Wenjing, Zhong Min, et al.. 2D S-transform profilometry based on the structured light projection [J]. Acta Optica Sinica, 2012, 32(12): 1207002.

[15] B Pan, Q Kemao, L Huang, et al.. Phase error analysis and compensation for nonsinusoidal waveforms in phase-shifting digital fringe projection profilometry [J]. Opt Lett, 2009, 34(4): 416-418.

[16] D Xiao-jie, D Fa-jie, L Chang-rong. Phase stabilizing method based on PTAC for fiber-optic interference fringe projection profilometry [J]. Opt & Laser Technol, 2013, 47: 137-143.

[17] M Schaffer, M Groe, B Harendt, et al.. Coherent two-beam interference fringe projection for highspeed three-dimensional shape measurements [J]. Appl Opt, 2013, 52(11): 2306-2311.

[18] 赵慧洁, 曾俊钰, 雷彦章. 基于声光栅的变频条纹投射系统[J]. 光学学报, 2008, 28(2): 355-360.

Zhao Huijie, Zeng Junyu, Lei Yanzhang. Frequency-varying fringes projector based on acoustic grating [J]. Acta Optica Sinica, 2008, 28(2): 355-360.

[19] Y C Park, S J Ahn, M H Kang, et al.. Ultra high-speed 3-dimensional profilometry using a laser grating projection system [J]. J Opt Soc Korea, 2009, 13(4): 464-467.

[20] T Wakayama, T Yoshizawa. Compact camera for three-dimensional profilometry incorporating a single MEMS mirror [J]. Opt Eng, 2012, 51(1): 013601.

[21] 张启灿, 苏显渝, 曹益平, 等. 利用频闪结构光测量旋转叶片的三维面形[J]. 光学学报, 2005, 25(2): 207-211.

Zhang Qichan, Su Xianyu, Cao Yiping, et al.. Three-dimensional shape measurement for rotating blade using stroboscopic structured illumination [J] . Acta Optica Sinica, 2005, 25(2): 207-211.

[22] 张睿, 曹益平, 何定高. 一种提高复合光栅实时三维测量精度的方法[J]. 中国激光, 2011, 38(10): 1008005.

Zhang Rui, Cao Yiping, He Dinggao. New method for improving the accuracy of real-time three-dimensional measurement based on a composite grating [J]. Chinese J Lasers, 2011, 38(10): 1008005.

杨国威, 孙长库, 王鹏. 频闪激光光栅条纹实时投射系统[J]. 光学学报, 2014, 34(11): 1112002. Yang Guowei, Sun Changku, Wang Peng. Real-Time Stroboscopic Laser Fringe-Pattern Projection System[J]. Acta Optica Sinica, 2014, 34(11): 1112002.

频闪激光光栅条纹实时投射系统

关于本站 Cookie 的使用提示

全站搜索

频闪激光光栅条纹实时投射系统

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索