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F8T5 Green filter

F8T5 Green filter

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Home-made green filter for F8T5 lamp. I made this in Adobe Illustrator, just a green rectangle. I printed it out on photocopyable overhead transparency plastic sheet on a colour laser printer. The rectangle was not dark enough for effect, but was large enough to wrap around tube twice, which is perfect. It is held in place with the most inexpensive transparent tape, and has held to daily use since August. Fixture is Chinese sold under Home Hardware brand in Canada. Tube and starter are original to fixture, which was new in August. I use this fixture as a "night light" which I turn off before going to bed and when I am away from home.

veilleuse.jpg lampe_spirale.jpg tube_vert.jpg IMG_4078.jpg

Light Information

Light Information

Lamp
Lamp Type:F8T5
Base:Mini-bi-pin
Fixture
Fixture Type:Fluorescent
Ballast Type:Magnetic
Electrical
Wattage:8 W
Voltage:120 V
Optical
Color Temperature:Daylight with green filter added

File information

File information

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Filename:tube_vert.jpg
Album name:sol / Various
Keywords:Lanterns
File Size:269 KB
Date added:Apr 02, 2011
Dimensions:1584 x 2048 pixels
Displayed:411 times
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don93s
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Apr 02, 2011 at 12:50 PM Author: don93s
That's a cool idea. I might try that for some fixtures in my band room. I could use old gels from stage lighting perhaps. Maybe several colors for 4 foot lamp for rainbow effect.
sol
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Apr 02, 2011 at 01:18 PM Author: sol
I thought of using coloured gels, but I have none lying around. There are fluorescent lamp filters of various sizes available commercially at Rosco but they charge 11,70 $ plus shipping here in Canada for one 24-inch T5 tube with two end caps. Extra end caps are available should one decide to cut the tube to shorter lengths to use it on shorter fluorescent lamps. If I were to leave it on unsupervised as a real night light, I would buy either the filter tube or real theatre gels, but for my use at the moment, my solution fits the bill.

Several colours for a rainbow effect would indeed make an interesting display. Someday, I would like to build a smaller-scale version of the display seen here using F8T5 or F13T5 tubes.
TL8W
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Lee


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Mar 29, 2012 at 03:32 PM Author: TL8W
Cool that would be good! Here's some F13T5 coloured lamps to look at meanwhile!

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

Ash
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Mar 29, 2012 at 04:00 PM Author: Ash
I did that many times with colored plastic wrap for book / gift wrapping. It does not last very long (deteriorates and cracks from UV and heat) but good enough for intermittent use

When i was kid and i had brief interest in photo processing (black and white paper), i wrapped a 9W PL with red filter for a safelight. but it overheated and melted the filter (damaging some photos). I then resorted to wrapping the entire fixture (a bulkhead) instead of wrapping the lamp inside it

T8's generally dont make a problem (at least in open fixture, in enclosed one use higher temperature resistant filters or T12s)
sol
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Mar 29, 2012 at 04:06 PM Author: sol
My only fear with my setup is should the starter get stuck, the ends will heat quite a bit. However, the film is made to withstand the heat of photocopiers and the green colour is colour toner from a colour laser printer, so it should be okay. Has been running about 10-16 hours a day since August 2010, and only with slight cracking in the toner and slight fading.
Ash
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Mar 29, 2012 at 04:13 PM Author: Ash
The ends indeed can melt with stuck starter. I did not try it with a T5, but they are just on the border (visible damage after few months of intermittent use) with T8, and melt right away with a PL 9W even when the lampm is working normal

I would be concerned with it melting and getting stuck to the fixture in case of stuck starter
sol
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Sep 08, 2012 at 12:17 PM Author: sol
Today, the lamp suddenly started flashing ; it is EOL. It lasted about two years of 14-16 hours a day. Not bad for a no-name Chinese lamp, starter and ballast. The ballast is still good, however, not heating up considerably with the flashing lamp. This means a trip to the store to get another lamp. In fact, I need two lamps because this lamp is EOL as well.
socketgeek63
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Jun 22, 2014 at 09:17 AM Author: socketgeek63
That does look like a very nice green color here!

Long live the great old 20th century quality in electrical & lighting products!

sol
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Jun 22, 2014 at 10:30 AM Author: sol
It is a nice blue-green colour, however only after about half the life of the tube (approx. 1 year). At first, it is more yellow-green (equally nice), and I believe the yellow part of the coloured toner fades first, leaving this nice colour after a while.
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