
Proceedings Paper
Out of band scatter measurements from OLI optical bandpass filtersFormat | Member Price | Non-Member Price |
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Paper Abstract
Multi-spectral Earth imaging sensors commonly use edge-bonded filter arrays (also known as “butcher blocks”) for
spectral selection. These arrays are built from small filter “sticks” that are diced from coated wafers and then bonded
together and placed in very close proximity to the detector array. Some filter designs are susceptible to excessive high
angle scatter if the filters are constructed under less than ideal deposition conditions. This scatter can lead to optical
crosstalk, which degrades system performance. Insufficient specifications and sub-optimum manufacturing practices
lead to a phenomenon called angle resolved scatter (ARS), where light that should have been rejected by the filter is
scattered into a very high-angle leak path, leading to optical crosstalk. The Landsat Data Continuity Mission’s
(LDCM’s) operational land imager (OLI) instrument uses proximal filter arrays for spectral selection, so it is important
to quantify the amount of transmitted, scattered light in wavelength ranges outside the pass band. This paper describes
the scatter measurement techniques and Bi-Directional Transmission Distribution Function (BTDF) results for 3 OLI
filters.
Paper Details
Date Published: 15 October 2012
PDF: 14 pages
Proc. SPIE 8510, Earth Observing Systems XVII, 851009 (15 October 2012); doi: 10.1117/12.945964
Published in SPIE Proceedings Vol. 8510:
Earth Observing Systems XVII
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)
PDF: 14 pages
Proc. SPIE 8510, Earth Observing Systems XVII, 851009 (15 October 2012); doi: 10.1117/12.945964
Show Author Affiliations
P. D. Fuqua, The Aerospace Corp. (United States)
C. J. Panetta, The Aerospace Corp. (United States)
J. D. Barrie, The Aerospace Corp. (United States)
C. J. Panetta, The Aerospace Corp. (United States)
J. D. Barrie, The Aerospace Corp. (United States)
E. Waluschka, NASA Goddard Space Flight Ctr. (United States)
T. A. Mooney, Materion Barr Precision Optics & Thin Film Coatings (United States)
T. A. Mooney, Materion Barr Precision Optics & Thin Film Coatings (United States)
Published in SPIE Proceedings Vol. 8510:
Earth Observing Systems XVII
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)
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