Correction of stray light in spectroradiometers and imaging Instruments
Measurement errors from stray light, spectral or spatial, are inevitable and are often the dominant source of error in spectroradiometers and imaging radiometers/photometers. We have developed a simple matrix method for correcting spatial stray light in imaging instruments as well as spectral stray-light errors in spectrometers. The stray-light correction method is based on the characterization of an instrument for a set of spectral line spread functions (LSF) or a set of point spread functions (PSF) to derive the correction matrix. The correction is simply done by a matrix multiplication to the measured raw signals, and stray-light errors are reduced by one to two orders of magnitude. By using a stray-light-corrected instrument, significant reductions are expected in overall measurement uncertainties in radiometry, colorimetry, photometry and many other applications.
imaging instrument imaging photometer imaging radiometer size-of-source effect spectrograph spectrometer spectroradiometer spatial stray light spectral stray light veiling glare.
Yuqin Zong Steven W. Brown Kerth R. Lykke Yoshi Ohno
National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
国际会议
26th Session of the CIE(国际照明委员会（CIE）第26届大会)
北京
英文
241-244
2007-07-04（万方平台首次上网日期，不代表论文的发表时间）