Seems low. The WPA specifies a minimum of 520 lux at all points on the rails and bed.
Lighting: Parabolic Louvers vs. Egg Crate
- Thread starter rexus31
- Start date
I linked to the app I use earlier in this thread.
How tall is your ceiling? Light falls off with the inverse square law. Doubling the distance leaves you with 1/4th the lux.
That probably exaggerated your fall-off.
Light Meter LM-300.
How many Lumens do your fixtures produce? The height is also a factor as my fixture is much lower than ceiling height.
I think so. I tried some angled readings and got 960 center rail at the head of the table and 800 at each pocket with the egg crates. The parabolic louvers are all packed up ready to ship so no revised readings with those.
My diffusers are 44" above the table. The bulbs are probably 46" or 47" above the table. What the distance from your LED's to the playing surface?
My flat panels are 50” from the surface, raised it higher than standard to allow a top-down camera to mount under light. I think I have 7500 lumens in each of the two 2x4 panels. Plenty bright enough for me, but not as bright as yours.
If it was my lighting, since there's plenty of light, I would try to get more even table illumination by raising the fixture up as close to the ceiling as I conveniently could. I also think with the light sources further away, the parabolic grate might have more effect - but they might not. I would also be interested in glare reduction, and both raising the fixture and the parabolic grate may help with that.
Can you elaborate on "extra strip of LED's"? How many lighting sources are in the fixture?
It's bright as any light in any room. I don't trust much of the WPA specs, I think a lot of them are pulled out of thin air. I'd be more likely to believe everyone's light meter is giving different results.
Download the one I used and see if your results vary. My light is putting out 20,800 Lumens. I'd be surprised if your 2x4 LED's are putting out that much light. Given the fact your lights are probably a good 6 to 7 feet (vs my 3.5 feet) off the playing surface, I'd say your readings are about accurate given the less total Lumen output and being twice as far from the table
Benelli
Well-known member
So the guy I bought the light from is in construction and had one of his electricians wire a third row of strips in between the two standard strips.
So instead of having 2 rows of 2 blub fluorescents for a total of 8 bulbs, it has three rows of two bulb fluorescents for a total of 12 LED bulbs
It's funny when you think about it, I only paid $250 for my table and $600 for the light. And the light is hands down the best billiards related purchase I have made to date...
Stout!
I just downloaded it. It says a diffuser is missing, and directs me to buy one or to make one with paper. Did you do that? That could be why your numbers are almost off the charts.
Benelli
Well-known member
Now going full circle back to your original question my light has the Diamond parabolic reflectors which I believe you can buy separately from dealers and it puts almost all the light on the table with a small band of illumation that runs about three and a half feet up the wall.
It means all the other observers and players can look at the table with zero glare and with only the table light on makes my redneck murder basement pool room look way cooler than it deserves to be...
I think there may be some errors in the various readings, but in this case 520 lux seems pretty reasonable as a spec. Here is a table of industry standards:
I measured about 150 lux with a light meter at the corners of a table. That table is too dark to play on comfortably in those areas.
I'm showing 4400 Lux at the brightest spot on my table using "Light Meter LM-300". I think this app is useless.
Benelli
Well-known member
on the positive side, your table can double as a tanning bed...
Yes, I used the DIY diffuser per the instructions. I'm pretty certain my lux readings are in line with the performance of my fixture. What app did you use? I'll take some measurements with it.
Again, I ask. How many Lumens does each 2x4 panel produce?