Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen

Lyuji Ozawa

doi:doi:10.11648/j.sr.20150303.18

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Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen

Lyuji Ozawa

Published in Science Research (Volume 3, Issue 3)

Received: 11 May 2015 Accepted: 23 May 2015 Published: 5 June 2015

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Abstract

Since the opaque phosphor screens cover up the inside of the FL tubes, the presence of the depths of the gap between positive column and phosphor screen has ever reported in the study on the lighted FL tubes since the invention of the FL tube. It has found that the depths of the gap in the lighted FL tubes conceal the unrivaled advantage of the FL tubes over the solid lighting devices. The invisible depths of the gap are non-distractively and quantitatively determined by the measurements of the build-up curve of the light intensities from the lighted FL tubes in the Ulbricht Sphere. The determined depth of the gap of the selected commercial 40W-HCFL tube as the best one was 3 x 10-3 m. The depths of the gap are markedly changed with the FL producers, indicating no quality control of the gaps. The unexcited Hg atoms in the gap act as the optical filter for the UV lights from the positive column before reaching to the phosphor screen. The results suggest us that if the depth of the gap reduces to 3 x 10-4 m, the illuminance (lm m-2) of the present 40W-HCFL tube will go up to 2.5 times. The systematic study on the gaps of the lighted FL tube remains for a future study.

Published in	Science Research (Volume 3, Issue 3)
DOI	10.11648/j.sr.20150303.18
Page(s)	93-104
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Illuminance, FL Tube, Positive Column, Phosphor Screen, Depth of Gap

References

[1]	L. Ozawa and Y. Tian, J. Inf. Display, 11, 128-133, 2010
[2]	L. Ozawa, J. China Ill. Engs, Soc., 9. 86-93, 2014
[3]	L. Ozawa and Y. Tian, J. China Ill. Eng, 6, 19-30, 2011
[4]	L. Ozawa and Y. Tian, J. China Ill. Eng, 7, 58-65, 2012
[5]	Handbook of gas discharge, Japan Institute of Electric Engineers, 1973
[6]	J. F. Waymouth, “Electric discharge Lamps”, MIT Press, 1971
[7]	Fred Rosebury, “Handbook of electron tube and vacuum techniques” American Institute of Physics”, New York, 1993
[8]	L. Ozawa, “Cathodoluminescence”, VCH and Kodansha, Tokyo, Japan, 1990
[9]	F. A. Kroger, “Some aspects of the Luminescence of Solids” Elsevier Publishing, New York, 1948
[10]	H. W. Leverentz, “An introduction to Luminescence of solids”, Jon Willy & Sons, New York, 1950
[11]	Handbook of Physics and Chemistry, CRC Press, Taylor & Francis, Boca Raton, London, New York 2006

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Lyuji Ozawa. (2015). Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Science Research, 3(3), 93-104. https://doi.org/10.11648/j.sr.20150303.18

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Lyuji Ozawa. Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Sci. Res. 2015, 3(3), 93-104. doi: 10.11648/j.sr.20150303.18

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Lyuji Ozawa. Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Sci Res. 2015;3(3):93-104. doi: 10.11648/j.sr.20150303.18

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@article{10.11648/j.sr.20150303.18,
  author = {Lyuji Ozawa},
  title = {Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen},
  journal = {Science Research},
  volume = {3},
  number = {3},
  pages = {93-104},
  doi = {10.11648/j.sr.20150303.18},
  url = {https://doi.org/10.11648/j.sr.20150303.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sr.20150303.18},
  abstract = {Since the opaque phosphor screens cover up the inside of the FL tubes, the presence of the depths of the gap between positive column and phosphor screen has ever reported in the study on the lighted FL tubes since the invention of the FL tube. It has found that the depths of the gap in the lighted FL tubes conceal the unrivaled advantage of the FL tubes over the solid lighting devices. The invisible depths of the gap are non-distractively and quantitatively determined by the measurements of the build-up curve of the light intensities from the lighted FL tubes in the Ulbricht Sphere. The determined depth of the gap of the selected commercial 40W-HCFL tube as the best one was 3 x 10-3 m. The depths of the gap are markedly changed with the FL producers, indicating no quality control of the gaps. The unexcited Hg atoms in the gap act as the optical filter for the UV lights from the positive column before reaching to the phosphor screen. The results suggest us that if the depth of the gap reduces to 3 x 10-4 m, the illuminance (lm m-2) of the present 40W-HCFL tube will go up to 2.5 times. The systematic study on the gaps of the lighted FL tube remains for a future study.},
 year = {2015}
}

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TY  - JOUR
T1  - Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen
AU  - Lyuji Ozawa
Y1  - 2015/06/05
PY  - 2015
N1  - https://doi.org/10.11648/j.sr.20150303.18
DO  - 10.11648/j.sr.20150303.18
T2  - Science Research
JF  - Science Research
JO  - Science Research
SP  - 93
EP  - 104
PB  - Science Publishing Group
SN  - 2329-0927
UR  - https://doi.org/10.11648/j.sr.20150303.18
AB  - Since the opaque phosphor screens cover up the inside of the FL tubes, the presence of the depths of the gap between positive column and phosphor screen has ever reported in the study on the lighted FL tubes since the invention of the FL tube. It has found that the depths of the gap in the lighted FL tubes conceal the unrivaled advantage of the FL tubes over the solid lighting devices. The invisible depths of the gap are non-distractively and quantitatively determined by the measurements of the build-up curve of the light intensities from the lighted FL tubes in the Ulbricht Sphere. The determined depth of the gap of the selected commercial 40W-HCFL tube as the best one was 3 x 10-3 m. The depths of the gap are markedly changed with the FL producers, indicating no quality control of the gaps. The unexcited Hg atoms in the gap act as the optical filter for the UV lights from the positive column before reaching to the phosphor screen. The results suggest us that if the depth of the gap reduces to 3 x 10-4 m, the illuminance (lm m-2) of the present 40W-HCFL tube will go up to 2.5 times. The systematic study on the gaps of the lighted FL tube remains for a future study.
VL  - 3
IS  - 3
ER  -

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Author Information

Lyuji Ozawa

The Japanese Government licensed consultant in science, Beijing, China

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Plain Text BibTeX RIS

APA Style

Lyuji Ozawa. (2015). Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Science Research, 3(3), 93-104. https://doi.org/10.11648/j.sr.20150303.18

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ACS Style

Lyuji Ozawa. Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Sci. Res. 2015, 3(3), 93-104. doi: 10.11648/j.sr.20150303.18

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AMA Style

Lyuji Ozawa. Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen. Sci Res. 2015;3(3):93-104. doi: 10.11648/j.sr.20150303.18

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@article{10.11648/j.sr.20150303.18,
  author = {Lyuji Ozawa},
  title = {Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen},
  journal = {Science Research},
  volume = {3},
  number = {3},
  pages = {93-104},
  doi = {10.11648/j.sr.20150303.18},
  url = {https://doi.org/10.11648/j.sr.20150303.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sr.20150303.18},
  abstract = {Since the opaque phosphor screens cover up the inside of the FL tubes, the presence of the depths of the gap between positive column and phosphor screen has ever reported in the study on the lighted FL tubes since the invention of the FL tube. It has found that the depths of the gap in the lighted FL tubes conceal the unrivaled advantage of the FL tubes over the solid lighting devices. The invisible depths of the gap are non-distractively and quantitatively determined by the measurements of the build-up curve of the light intensities from the lighted FL tubes in the Ulbricht Sphere. The determined depth of the gap of the selected commercial 40W-HCFL tube as the best one was 3 x 10-3 m. The depths of the gap are markedly changed with the FL producers, indicating no quality control of the gaps. The unexcited Hg atoms in the gap act as the optical filter for the UV lights from the positive column before reaching to the phosphor screen. The results suggest us that if the depth of the gap reduces to 3 x 10-4 m, the illuminance (lm m-2) of the present 40W-HCFL tube will go up to 2.5 times. The systematic study on the gaps of the lighted FL tube remains for a future study.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Illuminance of FL Tubes Controlled by Depths of Gap Between Positive Column and Phosphor Screen
AU  - Lyuji Ozawa
Y1  - 2015/06/05
PY  - 2015
N1  - https://doi.org/10.11648/j.sr.20150303.18
DO  - 10.11648/j.sr.20150303.18
T2  - Science Research
JF  - Science Research
JO  - Science Research
SP  - 93
EP  - 104
PB  - Science Publishing Group
SN  - 2329-0927
UR  - https://doi.org/10.11648/j.sr.20150303.18
AB  - Since the opaque phosphor screens cover up the inside of the FL tubes, the presence of the depths of the gap between positive column and phosphor screen has ever reported in the study on the lighted FL tubes since the invention of the FL tube. It has found that the depths of the gap in the lighted FL tubes conceal the unrivaled advantage of the FL tubes over the solid lighting devices. The invisible depths of the gap are non-distractively and quantitatively determined by the measurements of the build-up curve of the light intensities from the lighted FL tubes in the Ulbricht Sphere. The determined depth of the gap of the selected commercial 40W-HCFL tube as the best one was 3 x 10-3 m. The depths of the gap are markedly changed with the FL producers, indicating no quality control of the gaps. The unexcited Hg atoms in the gap act as the optical filter for the UV lights from the positive column before reaching to the phosphor screen. The results suggest us that if the depth of the gap reduces to 3 x 10-4 m, the illuminance (lm m-2) of the present 40W-HCFL tube will go up to 2.5 times. The systematic study on the gaps of the lighted FL tube remains for a future study.
VL  - 3
IS  - 3
ER  -

Copy | Download