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Linear HPS While not one of those rare monocrystalline alumina arc tube that you can see the electrodes in, this does seem a little more transparent than most. The electrodes can be clearly seen in this linear 250W SON-TS lamp. However, I find, the asymmetric construction slightly annoying with the large area at one end with the getter. Keywords: Lamps

Linear HPS

While not one of those rare monocrystalline alumina arc tube that you can see the electrodes in, this does seem a little more transparent than most. The electrodes can be clearly seen in this linear 250W SON-TS lamp. However, I find, the asymmetric construction slightly annoying with the large area at one end with the getter.

Westinghouse_S450BT37.jpg multimetal_halide.jpg SON_TS.jpg DSC_0410_003m.jpg MF250x.jpg
Lamp/Fixture Information
Manufacturer:Osram
Model Reference:VALOX SON/TS
Lamp
Lamp Type:HP sodium
Electrical
Wattage:250
File information
Filename:SON_TS.jpg
Album name:Tuopeek / High Pressure Sodium
Keywords:Lamps
Filesize:182 KiB
Date added:15 Nov 2025
Dimensions:2500 x 1527 pixels
Displayed:46 times
DateTime Original:2025:11:14 14:19:57
Exposure Time:1/250 sec
FNumber:f/8
File Source:Digital Still Camera
Flash:No Flash
Focal length:38 mm
ISO:100
Model:NIKON D3400
Software:Adobe Photoshop Elements 2.0
White Balance:0
URL:https://trad-lighting.net/gallery/displayimage.php?pid=1053
Favourites:Add to Favourites

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Max   [Sun 16 Nov 2025 at 10:07]
Osram sourced its sodium arc tubes from NGK, and they did indeed produce a very fine-grained PCA material which appears to be more transparent than other commercial types. I have a 70 W NAV-TS of the 4Y type in which the electrodes are clearly visible, the arctube is even more transparent than in the picture above.

Comment 1 to 1 of 1
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