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Philips 250w SON-T DECO "White SON" Very high pressure "white" sodium lamp giving improved colour rendering of CRI 80 and a cooler colour temperature of 2500k. Designed as a competitor to Iwasaki's 'Specialux' white SON lamp but was never very successful despite the lower cost due to these lamps having wide colour shift variations and needing several hundred hours to stabilise. Production only ran for a few years. Note the metal cups at either end of the arc tube for thermal insulation as well as the thicker arc tube to withstand the higher pressure and temperatures. 2500k 8000h 13500lm CRI 80%

Philips 250w SON-T DECO "White SON"

Very high pressure "white" sodium lamp giving improved colour rendering of CRI 80 and a cooler colour temperature of 2500k.
Designed as a competitor to Iwasaki's 'Specialux' white SON lamp but was never very successful despite the lower cost due to these lamps having wide colour shift variations and needing several hundred hours to stabilise. Production only ran for a few years.

Note the metal cups at either end of the arc tube for thermal insulation as well as the thicker arc tube to withstand the higher pressure and temperatures.

2500k
8000h
13500lm
CRI 80%

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Filename:Philips_250w-SONT_DECO_s.jpg
Album name:FrontSideBus / HID: High-Pressure Sodium
Filesize:2007 KiB
Date added:20 Dec, 2015
Dimensions:1920 x 1280 pixels
Displayed:43 times
URL:http://80.229.24.59:9232/gallery/displayimage.php?pid=2507
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Comment 1 to 13 of 13
Page: 1

Kev   [20 Dec, 2015 at 03:28 PM]
omfg what a find! Was this a eBay find? What a gem this is!
FrontSideBus   [20 Dec, 2015 at 03:43 PM]
Yes this was from the 'bay. The seller originally had them listed for silly money but I waited untill the price dropped due to lack of sales to sensible levels Smile
Kev   [20 Dec, 2015 at 04:02 PM]
Like that plan lol
AngryHorse   [20 Dec, 2015 at 04:51 PM]
Shocked Thats verging on being one of the first ceramic halide lamps!
FrontSideBus   [20 Dec, 2015 at 05:05 PM]
Too bad they were rubbish! Smile I mean 13,500 lm is barely more than a 150w SON-DL... which is already dimmer than a standard 150w SON!
Danny   [20 Dec, 2015 at 05:21 PM]
I think I have one of these?
Kev   [20 Dec, 2015 at 05:38 PM]
They must of had their uses! This looks to be really well engineered. 8000 Hr? More like 20,000 I would of thought
FrontSideBus   [20 Dec, 2015 at 05:51 PM]
Don't forget these run at silly temperatures and pressures!
Kev   [20 Dec, 2015 at 05:52 PM]
So they get hotter than a normal SON?
James   [23 Dec, 2015 at 10:21 PM]
8000h was the claim and I have my doubts if they even ever really achieved that in reality. Beautiful colour light, but Philips didn't do a good job in making this a quality lamp, and soon abandoned the production.
James   [23 Dec, 2015 at 10:24 PM]
8000h was the claim and I have my doubts if they even ever really achieved that in reality. Beautiful colour light, but Philips didn't do a good job in making this a quality lamp, and soon abandoned the production.
Kev   [23 Dec, 2015 at 11:47 PM]
Is there a difference between this and the son t comfort pro I just uploaded?
FrontSideBus   [24 Dec, 2015 at 10:11 AM]
Oh yes!

Comment 1 to 13 of 13
Page: 1

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