Light Fixture Lens

[Craig P.]

I have the below fluorescent light fixtures in my motorhome. The lenses keep popping off of them and I can't figure out why. The lenses appears to be fine. There are no cracks. Anyone else experience this?

Craig

[Cousin Ed]

Just put a dab of silicon in each corner.

[mikf]

Quote:

Originally Posted by Cousin Ed Just put a dab of silicon in each corner.

ED, if you use silicone can you get the lens back off? mine have been in the cabinet for the last couple of years.

[Paul R. Haller]

Actually I have found that total replacement is cheaper then buying lenses. Check on e bay. You can buy new florescent fixtures for about 18.00 each if you look in larger lots.Heck new bulbs cost more then that and I have been satisfied with their build quality and life. see here : Fluorescent Light 16Watt 12Volt Trailer Camper Boat 2F8 | eBay
-Paul R. Haller-

[Craig P.]

Quote:

Originally Posted by Cousin Ed Just put a dab of silicon in each corner.

Good idea...why the heck didn't I think of that? Duh!

Thanks Cousin.

Craig

[Cousin Ed]

YES, just use a little. They stay up forever but are easy to remove.

[Clay L]

I have had good luck putting a couple of pieces of dowel just long enough to spread the lens crossways and heating the lens with a heat gun. The lens will take a slightly wider set and hold better.

[Craig P.]

Quote:

Originally Posted by Clay L I have had good luck putting a couple of pieces of dowel just long enough to spread the lens crossways and heating the lens with a heat gun. The lens will take a slightly wider set and hold better.

Good idea as well....thanks Clay.

[ronspradley]

Where do I get access to a meter that will measure lumens in my existing lights? I need bright lights for reading.

ronspradley

[sdennislee]

Quote:

Originally Posted by ronspradley Where do I get access to a meter that will measure lumens in my existing lights? I need bright lights for reading. ronspradley

Do you need lumens? Light meters that measure in foot candles have been around forever, should be able to pick a used one at a reasonable price.

Guide lines for using foot candles:

Casual reading 20 to 50 foot candles roughly 215 to 540 lumens/m2, or 2314 to 5813 lux.

Intense reading (studying or for those of us with old eyes) 50 to 100 foot candles or roughly 540 to 1080 lumens/m2, or 5813 to 11,625 lux.

The light meter needs to be capable of measuring light in the range that the human eye sees which is 500 to 600 nanometers.

We have always had the best results with Spectronics and Labino light meters. If accuracy is not a huge issue you can find off brands on ebay for under $75.00, saw one for $23.00 (measures in Lux). http://www.ebay.com/itm/100-000-Lux-...ht_4735wt_1187 Although converting Lux to Lumens is controversial at best (for the purists) there are a few web sites that have converters. I included the lux numbers above.

Place the light meter where you will be holding the book. You may see in the instructions for some light meters to measure intensity at 12 or 18" form the face of the light source. These distances are for complying with codes for performing inspection activities, a common use for white light meters.

As you search for light meters you may also want to use the terms radiometers and photometers. Be careful in searching that you don't buy a photography light meter. It would do a fine job of giving you f/stop and shutter speed but not much else.

[Wizard]

For replacements I got mine fairly cheap from http://solarseller.com