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A transparent highbay with an european elliptical phosphored 400W MH lamp in Canyon Haifa mall
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.
Keywords: Indoor_Fixtures

A transparent highbay with an european elliptical phosphored 400W MH lamp in Canyon Haifa mall

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.

IMG_0569.jpg Holophane_High-Bay2.JPG IMG_0294.jpg IMG_0409.jpg 100_0837.jpg
File information
Filename:IMG_0294.jpg
Album name:dor123 / Fixtures
Keywords:Indoor_Fixtures
Company and Date Manufactured:Philips, Holland (Highbay, Gaash lighting or another israelis companies)
Model Number:HPI Plus
Wattage:400W
Lamp Type:Triband MH lamp with yttrium vanadate /DX phosphor
Filesize:218 KiB
Date added:Sep 27, 2010
Dimensions:1600 x 1200 pixels
Displayed:63 times
Color Space:sRGB
DateTime Original:2010:05:06 18:59:44
Exposure Bias:0 EV
Exposure Mode:0
Exposure Time:1/800 sec
FNumber:f/5.6
Flash:No Flash
Focal length:24.8 mm
ISO:80
Make:Canon
Max Aperture:f/5.6
Model:Canon PowerShot A1100 IS
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=3480
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