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Sag Lens Gumball
Interestingly, my Powerlite mini gumball uses the same diameter glass as your standard 8" signal lens. The yellow glass makes the 3000K CMH look more like HPs. 

Keywords: American_Streetlights

Sag Lens Gumball

Interestingly, my Powerlite mini gumball uses the same diameter glass as your standard 8" signal lens. The yellow glass makes the 3000K CMH look more like HPs.

COL_IMG_6286.JPG P7040052.JPG COL_IMG_4577.JPG HAM_IMG_1975.JPG 20170403_204913.jpg
File information
Filename:COL_IMG_4577.JPG
Album name:joe_347V / Fixer Uppers/Light Humour
Keywords:American_Streetlights
Filesize:136 KiB
Date added:Aug 20, 2015
Dimensions:1800 x 1200 pixels
Displayed:177 times
Color Space:sRGB
DateTime Original:2015:08:20 18:22:50
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Shutter Priority
Exposure Time:1/50 sec
FNumber:f/5
Flash:No Flash
Focal length:39 mm
ISO:400
Make:Canon
Model:Canon EOS REBEL T3
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=19755
Favorites:Add to Favorites

Comment 1 to 8 of 8
Page: 1

streetlight98   [Aug 21, 2015 at 12:13 AM]
Cool! Looks like a mini highmast lol.
joe_347V   [Aug 21, 2015 at 10:05 PM]
Thanks! Yeah it's sorta does now that it's sag lens "HPS" lol. I guess if I had a ton of these with missing glass, I could make a mini highmast pole with these lights.

The signal fit it quite snugly too, I had to pry it out with a tiny screwdriver when putting the drop lens back in.
streetlight98   [Aug 21, 2015 at 10:45 PM]
That's really cool. I wonder how the distribution is. Do signal lenses direct the light at a downward angle toward drivers or are the prisms just to scatter the light?
xmaslightguy   [Aug 22, 2015 at 04:17 AM]
Cool fixture!
joe_347V   [Aug 22, 2015 at 05:11 AM]
Heh, I noticed that the light tends to go straight down instead of a bit off to the sides like it did with the drop lens fitted. The PAR 30 I used does tend to throw light straight down so I guess the effect is more pronounced if I used a 300w incandescent or a 100w MV.

Signal lenses are designed to throw most light downwards so the distribution would change depending on orientation. The orange peel and crosshatch style lenses used on old signals should give a more symmetrical distribution though. Here's a good lighting of the main types of signal lenses. I used the Kopp TL-4777 on the next page for this demo.
lite_lover   [Aug 24, 2015 at 08:17 AM]
That's cool Joe the 8" signal lens fits on your mini gumball. Cool
joe_347V   [Aug 25, 2015 at 04:58 AM]
Yeah, it was pretty neat that 8" signal lenses fit.
dor123   [Nov 24, 2023 at 02:20 AM]
Reminds me of GE HMMA high mast lantern with the signal lens.

Comment 1 to 8 of 8
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