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Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968)
[ACTIVE]

Luminance — A Tutorial Paper

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
77, No. 10, pp. 1005–1011
Abstract
The usual engineering interpretation of luminance (photometric brightness), luminous intensity per unit projected area, is adequate for many applications. However, the basic definition involves a limit of two independent variables, area and solid angle. Luminance is luminous flux per unit projected area per unit solid angle. Using this definition it is possible to explain why meters never exactly measure luminance and to determine what functions of luminance produce the responses of luminance meters. All meter measurements and practical applications of luminance involve some type of averaging process. Generally, this presents no problem. There are many cases, however, in which a precise definition of the average must be based on the application since two independent variables are involved. It is important to recognize when this is required. This is especially true in scientific applications and in the design and analysis of luminaires, light sources, projection systems, and other optical systems. Many different values of luminance can be used to describe a light source, and it is important to choose the appropriate definition for each use.
Publication Date
1968-10-01
DOI
10.5594/J13629
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J13629
Author(s)
Robert E. LevinApplications Engineering, Lighting Products Div., Sylvania Electric Products Inc., 100 Endicott St., Danvers, Mass. 01923
Copyright
© 1968 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

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  • Design Parameters for the Use of Quartz-Iodine Lamps [Active]
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  • 11. Finch D. , “Basic quantities and concepts used in illuminating engineering,” Illum. Eng. , 48 : 375 , July 1953 . EXTERNAL
  • 12. Fry G. , “Proposed usage of words “luminance“ and “helios”,” Illum. Eng. , 48 : 406 , Aug. 1953 . EXTERNAL
  • 13. Spencer D. , “Modern ideas on nomenclature,” Illum. Eng. , 49 : 394 , Aug. 1954 . EXTERNAL
  • 14. “Illuminating engineering nomenclature and photometric standards,” Illum. Eng. , 36 : 813 , Sept. 1941 ;IES Lighting Handbook, Section 3, Illuminating Engineering Society, 1959 (3rd ed.). EXTERNAL
  • 15. Jenkins F. White H. , 7.12, Fundamentals of Optics , McGraw-Hill Book Co., Inc. , New York , 1950 ( 2nd ed. ). EXTERNAL
  • 16. Keitz H. , Lighting Calculations and Measurements , IX-5 , Cleaver Hume Press, Ltd. , London , 1955 . EXTERNAL
  • 17. Gershun A. , The Light Field , M.I.T. Publication Serial No. 164, trans. by P. Moon and G. Timoshenko. EXTERNAL
  • 18. Spencer D. , “Out-of-focus photometry,” J. Opt. Soc. Am. , 55 : 396 , Apr. 1965 . EXTERNAL
  • 19. Spencer D. Levin R. , “Out-of-focus photometry with thick lenses,” J. Opt. Soc. Am. , 55 : 1569 , Nov. 1965 . EXTERNAL
  • 2. Spencer D. Levin R. , “On the significance of photometric measurements,” Illum. Eng. , 61 : 196 , Apr. 1966 . EXTERNAL
  • 20. Spencer D. Levin R. , “Some characteristics of the Pritchard photometer,” J. Opt. Soc. Am. , 58 : 718 , May 1968 . EXTERNAL
  • 21. Eastman A. , “Contrast determination with the Pritchard telephotometer,” Illum. Eng. , 60 : 179 , Apr. 1965 . EXTERNAL
  • 22. Spencer D. , “Tensors in illuminating engineering,” Illum. Eng. , 59 : 345 , May 1964 . EXTERNAL
  • 23. Neidhart J. , “An analysis of fluorescent luminaire brightness,” Illum. Eng. , 46 : 569 , Nov. 1951 . EXTERNAL
  • 25. Kingslake R. , Applied Optics and Optical Engineering , footnote C, Table V, p. 62, Sect. 2-D, pp. 54 – 55 , Vol. I , Academic Press , New York , 1965 . EXTERNAL
  • 26. IES Lighting Handbook , Fig. A-3, p. A-2 , Illuminating Engineering Society , 1966 ( 4th ed. ). EXTERNAL
  • 3. Jolley L. Waldram J. Wilson G. , The Theory and Design of Illuminating Engineering Equipment , XX-2 , Chapman & Hall, Ltd. , London , 1930 . EXTERNAL
  • 4. Jones W. , “Use of computers in design and analysis of luminaires,” Illum. Eng. , 55 : 386 , July 1960 . EXTERNAL
  • 5. Lemons T. Levin R. , “Characteristics of theatrical lighting equipment using tungstenhalogen lamps,” Theatre Design and Technology , No. 13, p. 18 , May 1968 . EXTERNAL
  • 7. Levin R. Spencer D. , “Matched filament-reflector system for projectors,” J. Opt. Soc. Am. , 56 : 1349 , Oct. 1966 . EXTERNAL
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Robert E. Levin; Luminance — A Tutorial Paper, Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J13629
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Robert E. Levin; Luminance — A Tutorial Paper, Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J13629

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<span class="citation">Robert E. Levin; <cite>Luminance — A Tutorial Paper</cite>, Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968); SMPTE, 1968. Available at <a href="https://doi.org/10.5594/J13629" target="_blank" rel="noopener">https://doi.org/10.5594/J13629</a></span>

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Robert E. Levin; Luminance — A Tutorial Paper, Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968); SMPTE, 1968
doi: 10.5594/J13629
url: https://doi.org/10.5594/J13629
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Robert E. Levin; <cite id="bib-10-5594-j13629">Luminance — A Tutorial Paper</cite>, Journal of the SMPTE ( Volume: 77, Issue: 10, October 1968); SMPTE, 1968
<span class="doi">10.5594/J13629</span>
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