Liang XU, Li-min GAO, Jian-ke ZHAO, et al. Calibration of stray light based on point source transmittance measurement system[J]. Optics and precision engineering, 2016, 24(7): 1607-1614.
DOI:
Liang XU, Li-min GAO, Jian-ke ZHAO, et al. Calibration of stray light based on point source transmittance measurement system[J]. Optics and precision engineering, 2016, 24(7): 1607-1614. DOI: 10.3788/OPE.20162407.1607.
Calibration of stray light based on point source transmittance measurement system
To improve the stray light testing ability and calibration accuracy of the stray light equipment used in test of the Point Source Transmittance (PST)
a calibration lens was proposed to calibrate the testing range and testing accuracy of the equipment in a large off-axial angle. By using a simple physical model
the calibration lens was designed in a laboratory. The physical parameters of the calibration lens were measured
then these parameters were taken into the TracePro to calculate the PSTs in different off-axial angles. Finally
the calculated result and the tested result of PSTs were compared
and the test accuracy of the equipment were obtained. The experimental results indicate that the difference between calculate results and testing results of the calibration lens is better than lg/0.5
meeting the need of testing accuracy calibration of the stray light equipment in testing PSTs and providing a reliable reference for the absolute measurement of PSTs. This technology solves the problem in testing accuracy calibration of PST measuring systems.
LI T, YANG J F, RUAN P, et al.. Stray light analysis of the lunar-based optical telescope[J]. Acta Photonica Sinica, 2007, 36(Suppl.):136-141.(in Chinese)
YANG L, LI D, CUI T G, et al.. Measurement and elimination of stray light from space solar telescopes for imaging test at UV band[J].Opt. Precision Eng., 2011, 19(7):1456-1463.(in Chinese)
XU L, ZHAO J K, XUE X, et al.. PST research and measurement of lunar-based optical telescope stray light[J].Infrared and Laser Engineering, 2014, 43(4):1289-1294.(in Chinese)
LIAO SH, SHEN M Z. Point source transmittance of stray light of infrared optical systems and its measurements[J].J. Infrared Millim. Waves, 1996, 15(5):375-378.(in Chinese)
JOHN F, FRANK G, TIM F, et al.. New stray light test facility and initial results[J]. SPIE, 2008, 7069:1-5.
YAN CH X, XU J, PENG Y. Stray light suppression of three-mirror off-axis space optical telescope[J]. Opt. Precision Eng., 2010, 18(2):289-293.(in Chinese)
GARY L P. Stray light test station for measuring point source transmission and thermal background of visible and infrared sensors[J]. SPIE, 2008, 7069:70690M-1-70690M-9.