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Solar blind bandpass filters for UV imaging devices
Year:
1998
Authors :
Lindner, Pinhas
;
.
Volume :
3302
Co-Authors:
Lindner, M., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Elstein, S., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Wallace, J., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Lindner, P., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Facilitators :
From page:
176
To page:
183
(
Total pages:
8
)
Abstract:
A solar blind UV bandpass filter technology has been developed which is appropriate for use with all types of UV imaging devices under full daylight conditions. This technology is based on dye doped polymer films that provide the critical solar UV blocking and the required sharp rejection slope, due to their intense absorption bands in specific portions of the UV. These films are combined with other components that block visible and near IR light to form selective and very efficient sun blocking UV bandpass filters. This technology is very flexible and permits tailoring of the filter transmission and its blocking characteristics. Solar blind bandpass filters based on this technology have been produced for use with MCP imagers with CsTe and RbTe photocathodes. Filter characteristics include 10% - 25% peak transmission, bandwidths (FWHM) of 16 - 22 nm and out of band blocking levels in excess of 12 OD. Using these filters, under direct midday summer sun, background signal levels less than 10 photons per second were obtained, when integrated over the entire field of view of the imager. Under development is a filter for use with back illuminated CCDs (BCCDs). Target specifications include 15% peak transmission, 20 nm bandwidth and substantial blocking of solar radiation from 290 to 1100 nm. Feasibility for CCD imaging in the solar blind range was proven with a BCCD camera.
Note:
Related Files :
ICCD
Plastic films
Solar blind
Solar radiation
ultraviolet radiation
UV
UV camera
UV imaging
Show More
Related Content
More details
DOI :
10.1117/12.304582
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Conference paper
;
.
Language:
English
Editors' remarks:
ID:
29178
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:44
Scientific Publication
Solar blind bandpass filters for UV imaging devices
3302
Lindner, M., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Elstein, S., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Wallace, J., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Lindner, P., OFIL Ltd., Kiryat Weizmann Science Park, Bldg. 13A, Rehovot 76100, Israel
Solar blind bandpass filters for UV imaging devices
A solar blind UV bandpass filter technology has been developed which is appropriate for use with all types of UV imaging devices under full daylight conditions. This technology is based on dye doped polymer films that provide the critical solar UV blocking and the required sharp rejection slope, due to their intense absorption bands in specific portions of the UV. These films are combined with other components that block visible and near IR light to form selective and very efficient sun blocking UV bandpass filters. This technology is very flexible and permits tailoring of the filter transmission and its blocking characteristics. Solar blind bandpass filters based on this technology have been produced for use with MCP imagers with CsTe and RbTe photocathodes. Filter characteristics include 10% - 25% peak transmission, bandwidths (FWHM) of 16 - 22 nm and out of band blocking levels in excess of 12 OD. Using these filters, under direct midday summer sun, background signal levels less than 10 photons per second were obtained, when integrated over the entire field of view of the imager. Under development is a filter for use with back illuminated CCDs (BCCDs). Target specifications include 15% peak transmission, 20 nm bandwidth and substantial blocking of solar radiation from 290 to 1100 nm. Feasibility for CCD imaging in the solar blind range was proven with a BCCD camera.
Scientific Publication
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