Abstract
Towards the end of the last century it was gradually realised that the correct quantity characterising a light source is not the luminous intensity, but the total luminous flux. Until then no other method of determining luminous flux was known than that of computing it from the light distribution. This method is not straight forward, however, and efforts have quite naturally been made to devise an instrument by means of which luminous flux could be measured in a simple manner. Various suggestions were put forward, but none of these gave satisfactory results until in 1900 Ulbricht1) solved the problem by introducing his sphere photometer, or integrating photometer.
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References
R. Ulbricht, E.T.Z. 21, 1900, 595–597. “Die Bestimmung der mittleren räumlichen Lichtintensität durch nur eine Messung”
R. Ulbricht: “Das Kugelphotometer”. Munich and Berlin 1920
H.-J. Helwig: “Uber lichttechnische Messungen mit Hilfe von Hohlraumen”. Thesis Berlin 1933. See also: das Licht 4, 1934, 115–118, 135–140 and 156–159. “Über lichttechnische Messungen mit Hilfe von Hohlräumen” and 5, 1935, 33–34. “Über praktische Erfahrungen mit der neuen Messmethode für die Ulbrichtsche Kugel”
British Standard 354: 1961. Recommendations for photometric integrators
DIN 5032. “Photometrische Bewertung und Messung von Lampen und Beleuchtung”. Juli 1957
See also: W. E. K. Middleton and C. L. Sanders, Ill. Eng. 48, 1953, 254–256. “An Improved Sphere Paint”
M. H. Gabriel, C. F. Koenig and E. S. Steeb, Gen. El. Rev. 54, 1951, no. 9, 30–37 and no. 10, 23–29. “Photometry”. This article gives a survey of the use of the integrator for measuring luminous flux of lamps.
P. J. Oranje, Ph. T.R. 5, 1940, 166–170. “Technical Photometry of Gas-Discharge Lamps”
A. H. van Gorcum and B. V.D. Waal, Electrotechniek, 41, 1963, (335–342), “Automatische gloeilampenfotometer met digitale registratie” (in Dutch) (Eng.: Automatic incandescent lamps photometer with digital recording)
The same authors: “Automatic photometer with digital recording for checking quality of incandescent lamps”, Control, 11, 1967, 158–162 and 236–240.
H. J. J. van Boort and D. Kolkman, Philips Techn. Review, 19, (1957/58) 333–337, “The double-flux “TL”-lamp, a fluoresent lamp of high output per unit length”.
I.E.C. Publication 82. “Recommendations for ballasts for fluorescent lamps”.
J. A. M. van Liempt and J. A. de Vriend, Rec. Trav. Chim. Pays Bas 52, 1933, 163. “Studien über die Explosion von Schwefelkohlenstoff-Stickstoffmonoxyd-Gemischen”
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© 1971 N. V. Philips’ Gloeilampenfabrieken, Eindhoven (The Netherlands)
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Keitz, H.A.E. (1971). Measurement of Luminous Flux, Quantity of Light, and Luminous Emittance. In: Light Calculations and Measurements. Philips Technical Library. Palgrave, London. https://doi.org/10.1007/978-1-349-00012-8_17
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DOI: https://doi.org/10.1007/978-1-349-00012-8_17
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