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A transparent highbay with an european elliptical phosphored 400W MH lamp in Canyon Haifa mall
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The lamp is most likely an european Philips HPI plus triband MH lamp coated with a yttrium vanadate /DX phosphor.
In the specturm of this lamp (Using a CD-R), I saw lines in the blue (Indium), green (Thallium) and orange (sodium) and also a red band (Yttrium vanadate /DX phosphor), so the spectrum was four banded.
The phosphor effectively lower the color temperature of the lamp and increase the CRI, since unlike in Na-Sc MH lamps, there is no halide emmisions in its wavelengths area.
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