Difference in Evolo optics

This is the two different optic designs the Evolo lantern can come with. On the left is the optic seen in the Sapphire and ZX1. On the right is the optic seen in the ZX3. Each lantern has a 45W cosmo lamp, and the adjustable lampholders are set so the arc tube is in the same physical position. I do wonder how the different optics compare for performance, and what the difference in distribution would be like.

File information
Filename:	1000035478.jpg
Album name:	AgentHalogen_87 / Street light stuff
Manufacturer:	Urbis
Type/Model:	Evolo 2
Wattage:	CPO-TW 45
Filesize:	3514 KiB
Date added:	18 Apr, 2026
Dimensions:	2630 x 1800 pixels
Displayed:	39 times
URL:	http://80.229.24.59:9232/gallery/displayimage.php?pid=24613
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Comment 1 to 4 of 4

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FrontSideBus

[18 Apr, 2026 at 02:32 PM]

One on the right looks like it's really better suited to larger SON-T lamps.

Beta 5

[18 Apr, 2026 at 02:43 PM]

My 150W SON example does indeed use the one on the right, I wonder what the difference in the specs of the lanterns are when ordering for them to come with two types of optic Confused

AgentHalogen_87

[18 Apr, 2026 at 03:18 PM]

On the rare cases we have SON Evolos in my area, they do have the bigger optic. The times the bigger optic is used for CPO on 5 and 6M columns, it's always at the end of a cul-de-sac pointing up the road. All the rest on the street are always the other type. So I imagine the right hand lantern pushes more light forwards. The labels inside them are different I believe; they have the full product code on them. I don't remember which part is offhand but there is definitly a part for the optic type and a part for curved or flat glass.

Beta 5

[18 Apr, 2026 at 04:29 PM]

That makes sense, also good to hear they put some thought into the design of the installation if they are specifying different optics for different positions. I don't recall ever seeing anything like that here.

Comment 1 to 4 of 4

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