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Bands on the street made by Mesko OURW

Bands on the street made by Mesko OURW

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In the 90's there was a common practice of conversion of OURW fixtures (both one lamp and two lamp) from MV to clear tubular HPS lamps. A great number of fixtures had undergone such conversion and until recently it wasn't hard to find one. Unfortunately converted fixtures performed worse than fixtures dedicated for HPS due to the glass refractor. Refractors in OURW fixtures performed ok when a diffused lamp (like MV) was installed as intended by manufacturer. But when clear tubular HPS lamps were used then the street wasn't lit in an uniform way but there were contrasting bright and dim bands, more light went sideways than straigt under the lantern. In this photo those bands can be clearly seen.

IMG_7060.JPG DSC75952.JPG IMG_1660.JPG IMG_9482.JPG

Light Information

Light Information

Manufacturer:Mesko
Lamp
Lamp Type:HPS

File information

File information

Download: Download this File
Filename:IMG_1660.JPG
Album name:trojmiejski / Lanterns in Poland
Keywords:Lanterns
File Size:134 KB
Date added:Mar 26, 2019
Dimensions:2464 x 1386 pixels
Displayed:33 times
Date Time:2018:03:18 19:14:56
DateTime Original:2018:03:18 19:14:56
Exposure Bias:0 EV
Exposure Time:4/10 sec
FNumber:f 7.1
Flash:No Flash
Focal length:24 mm
ISO:400
Make:Canon
Model:Canon EOS 1300D
Software:Digital Photo Professional
White Balance:1
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-157781
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Comments
kai
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Mar 26, 2019 at 03:28 PM Author: kai
Same, pretty widespread problem with luminaires designed for HPS lamps – but the classic ones with coated bulbs. Main issue is that this way they turn from certain angles into really bad glare bombs.
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