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The ESLA at night Here is the ESLA lit up at night. I've forgotten how effective tungstens are, this 60W lit up my garden effectively with the help of the mirrors in the lantern, with a decent spread as well. Keywords: Lanterns

The ESLA at night

Here is the ESLA lit up at night. I've forgotten how effective tungstens are, this 60W lit up my garden effectively with the help of the mirrors in the lantern, with a decent spread as well.

20251003_171035.jpg 20250712_200825.jpg 20250713_223714.jpg 20250713_223511A.jpg 20250713_123902.jpg
Lamp/Fixture Information
Manufacturer:E.S.L.A
Model Reference:Bi-Multi
Lamp
Lamp Type:GLS 60
Filament/Radiator Type:Tungsten
File information
Filename:20250713_223714.jpg
Album name:AgentHalogen_87 / Street light stuff
Keywords:Lanterns
Filesize:539 KiB
Date added:09 Aug 2025
Dimensions:3072 x 1382 pixels
Displayed:306 times
URL:https://trad-lighting.net/gallery/displayimage.php?pid=947
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Comment 1 to 4 of 4
Page: 1

Max   [Sun 10 Aug 2025 at 09:08]
It's interesting that ESLA didn't go for a horizontal cut-off pattern. Either light spillage above the horizontal plane was not seen as a drawback (or even an advantage for lighting surrounding buildings, etc.), or a proper batwing photometry was just too difficult to implement back then.
AgentHalogen_87   [Thu 14 Aug 2025 at 16:31]
It was the 1920s, I don't think they cared too much about sky light pollution, and focussed on effective distribution of the light source as they should do Cool
Max   [Thu 14 Aug 2025 at 19:52]
It sure is not a dark sky problem here (of course that wasn't an issue back then), but more one of efficiency as light spilled upwards is certainly not used to illuminate the ground. But you're right, it was the 1920s, and that certainly was one of the most advanced luminaire optics design at that time (for street lighting, that is).
Ria   [Sun 17 Aug 2025 at 15:02]
And one I would love to get my hands on (but I don't suppose I'll get the chance Mr. Green Razz)

Comment 1 to 4 of 4
Page: 1