TY - JOUR
T1 - Spatial Modulation Characteristics of Micro-Lens for Irradiated Laser
AU - Long, Meichen
AU - Zhang, Haiyang
AU - Liu, Chun
AU - Zhao, Changming
AU - Yang, Suhui
AU - Yang, Hongzhi
N1 - Publisher Copyright:
© 2017, Chinese Lasers Press. All right reserved.
PY - 2017/12/10
Y1 - 2017/12/10
N2 - The traditional optical lens detection is mainly based on echo intensity (cat-eye effect). However, there are obvious diffraction phenomena in reflection echoes for micro-lens. Thus, it is important to investigate the diaphragm diffraction effect of micro-lens. Based on the theory of angular spectral diffraction, we study the spatial modulation characteristics of micro-lens for irradiated laser, and deduce the equation for optical field distribution of echo signal. The influences of the detection distance, incident angle, and diaphragm diameter on the diffraction optical field distribution are simulated, as well as the maximum detectable incident angle under the condition of different diaphragm diameters. Moreover, the diffraction phenomena are detected using the constructed active laser detection system. The results indicate that the diffraction patterns observed from the experiment match well with the simulated patterns. The theory, developed in this article, is proved to be qualified to predict diffraction profiles of micro-lens' echo signal to an extraordinary degree.The theory can accurately predict diffraction phenomena in echoes for micro-lens.
AB - The traditional optical lens detection is mainly based on echo intensity (cat-eye effect). However, there are obvious diffraction phenomena in reflection echoes for micro-lens. Thus, it is important to investigate the diaphragm diffraction effect of micro-lens. Based on the theory of angular spectral diffraction, we study the spatial modulation characteristics of micro-lens for irradiated laser, and deduce the equation for optical field distribution of echo signal. The influences of the detection distance, incident angle, and diaphragm diameter on the diffraction optical field distribution are simulated, as well as the maximum detectable incident angle under the condition of different diaphragm diameters. Moreover, the diffraction phenomena are detected using the constructed active laser detection system. The results indicate that the diffraction patterns observed from the experiment match well with the simulated patterns. The theory, developed in this article, is proved to be qualified to predict diffraction profiles of micro-lens' echo signal to an extraordinary degree.The theory can accurately predict diffraction phenomena in echoes for micro-lens.
KW - Active laser detection
KW - Cat-eye effect
KW - Diffraction
KW - Micro-lens
KW - Optical field of echo
UR - http://www.scopus.com/inward/record.url?scp=85043347973&partnerID=8YFLogxK
U2 - 10.3788/AOS201737.1205001
DO - 10.3788/AOS201737.1205001
M3 - Article
AN - SCOPUS:85043347973
SN - 0253-2239
VL - 37
JO - Guangxue Xuebao/Acta Optica Sinica
JF - Guangxue Xuebao/Acta Optica Sinica
IS - 12
M1 - 1205001
ER -