Volume 3, Issue 4, August 2015, Pages: 170-179
Received: May 11, 2015;
Accepted: May 23, 2015;
Published: Jun. 5, 2015
Views 3445 Downloads 55
Lyuji Ozawa, The Japanese Government licensed consultant in science, Beijing, China
It has found that the study on the FL tubes has made with the deliberately modified Ulbricht Spheres for the determination of the luminous efficiency (lm W) that uses in the study on the colorimetry and that invalidates the study on the light sources. The study on the light sources should make with either illuminance (lm m-2), or luminance (cd m-2) and irradiance (W m-2). The rooms in the house should be illuminated with the daytime scenery with the slightly overcastting sky (330 lm m-2) that human eyes adjust for 5 million years. The illuminance (lm m-2) of the commercial compact-20W-HCFL tubes, which have selected from the stores, has determined with the corrected Ulbricht Sphere. The selection criterion is the temperature of the positive column above 60oC of the lighted FL tubes. The examined compact 20W-HCFL tubes have the illuminance (5700 ± 300 lm m-2). Two compact 20W-HCFL tubes that set in a large opaque plastic cover comfortably illuminate the 30 m2 with the 380 lm m-2. The determined W does not involve in the generation energy of the lights in the FL tubes. The reduction of the Wact of the external AC driving circuits remains for a future study.
Illuminance (lm M-2) of Compact 20W-HCFL Tube, Science Research.
Vol. 3, No. 4,
2015, pp. 170-179.
F. Meyer, US Pat. 2,182,732 (1928).
J. F. Waymouth, “Electric discharge lamps” MIT Press (1971).
“Handbook of gas discharge”, Japan. Inst. Elect. Engs., (1973).
L. Ozawa and Y. Tian, “Calculation of the quantum efficiency of phosphor screen in CRTs and FL tubes”, J. Inf. Dis., 11, pp 128-133, (2010).
L. Ozawa, “Cathodoluminescence”, Kodansha Science & VCH, (1990).
L. Ozawa “307 200 pixels/cm2 resolution phosphor screen in monochrome CRT”, Materials, Chemistry and Physics, 60, p 274-281 (1999).
L. Ozawa, “Cathodoluminescence & Photoluminescence” CRC Press (2007).
L. Ozawa and Y. Tian, “Coexistence of disparities of external AC driving circuit and internal DC electric circuit in operation of FL tube”, J. China Ill. Engs, Soc., 6, p19-30 (2011)
L. Ozawa, “Development of DC internal electric power generator in coil-FL tube”, J. China Ill. Engs, Soc., 9, p86-93 (2014).
L. Ozawa and Y. Tian, “A new 4G electron source for fluorescent lamp tubes”, J. China Ill. Engs, Soc., 7, p58-65 (2012).