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Original Articles

Low Pressure Sodium Lamps with a Luminous Efficacy of 200 lm/W

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Pages 607-615 | Published online: 20 Sep 2013

References

  • For a comprehensive review, seeDennemanJ. W.Jr.; “Low pressure sodium discharge lamps”; IEE Procedures, Vol. 128, Part A, No. 6, September 1981, pp. 397–414.
  • KöstlinH., “Application of thin semiconductor and metal films in energy technology”, Festkörperprobleme (Solid State Physics) XXII (1982) pp. 229–254.
  • U.S. Patent #4,401,693, G. Frank; H. Köstlin; L. M. Sprengers; and R. J. Campbell; “Method of Manufacturing a Heat-Reflecting Filter;” Issued August 30, 1983.

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