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作者机构:CALTECH Jet Prop Lab Pasadena CA 91109 USA Univ Arizona Ctr Opt Sci Tucson AZ 85721 USA CIDTEC Cameras & Imagers Spectra Phys Liverpool NY 13088 USA
出 版 物:《OPTICAL ENGINEERING》 (光学工程)
年 卷 期:2004年第43卷第3期
页 面:689-696页
核心收录:
学科分类:08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 0702[理学-物理学]
主 题:sparse array sensor non-null interferometer subNyquist interferometry high-frequency detector modulation transfer function testing aliasing
摘 要:High-frequency fringe patterns found in non-null interferometric testing of aspheres require the use of special detector arrays containing small, widely spaced pixels. A sparse array camera with the ability to detect high spatial frequencies has been developed. The modulation transfer function (MTF) of the camera is measured using a sinusoidal fringe pattern generated by a Mach-Zehnder interferometer. Spatial frequencies up to 400 cycles/mm are generated and used to characterize the MTF of the camera. (C) 2004 Society of Photo-Optical Instrumentation Engineers.