Lighting gurus approximate this spectrum?

FastUno · 05/20/2017, 07:52 PM

Any lighting gurus that can approximate a point source LED light fixture/bulb that can come as close to this as possible? Something very point source & not spread, like a grow light bulb or Kessil.

Ron Reefman · 05/21/2017, 05:00 AM

There is almost nothing available in an led that is true UV. And you are looking at some 255nm, 300nm and 365nm UV leds... not very likely IMHO.

Leds in the 405nm, 440nm, 550nm and 560nm ranges are common enough. But finding them in an existing fixture, especially a point source fixture is very unlikely.

You might look at ReeFi-LED and see if they could build you a custom led pendant? They make 150 watt pendants with Cree leds already and it's just a start up company. I have one of their standard pendants over my frag tank for the past week and I like it a lot. BTW, they come with an adjustable glass lens and can cover 2'x2' up to 3'x3'.

oreo57 · 05/21/2017, 07:26 AM

Quote:

Originally Posted by FastUno

Any lighting gurus that can approximate a point source LED light fixture/bulb that can come as close to this as possible? Something very point source & not spread, like a grow light bulb or Kessil.

The bulb you listed has a lifespan rating of 200 hours btw...

Anyways it is probably possible..

Here is an image of some available diodes:
https://www.intl-lighttech.com/produ...s/leds/uv-leds

05/20/2017, 07:52 PM	#1
FastUno Registered Member Join Date: May 2004 Location: NY Posts: 1,726	Lighting gurus approximate this spectrum? Any lighting gurus that can approximate a point source LED light fixture/bulb that can come as close to this as possible? Something very point source & not spread, like a grow light bulb or Kessil. __________________ 75g AGA/RR/BB, 20g sump, Aquactinics 2x250 (Phoenix 14K)/2x54 T5 (AB & B+), Eheim 1262 Return, Deltec AP600, Tunze 6060 & Osmolator 3155, Homemade 2 part Current Tank Info: SW, Reef

05/21/2017, 05:00 AM	#2
Ron Reefman Registered Member Join Date: Jul 2009 Location: Cape Coral, FL Posts: 10,431	There is almost nothing available in an led that is true UV. And you are looking at some 255nm, 300nm and 365nm UV leds... not very likely IMHO. Leds in the 405nm, 440nm, 550nm and 560nm ranges are common enough. But finding them in an existing fixture, especially a point source fixture is very unlikely. You might look at ReeFi-LED and see if they could build you a custom led pendant? They make 150 watt pendants with Cree leds already and it's just a start up company. I have one of their standard pendants over my frag tank for the past week and I like it a lot. BTW, they come with an adjustable glass lens and can cover 2'x2' up to 3'x3'. __________________ The good thing about science is that it's true whether or not you believe in it. (Neil deGrasse Tyson) Visit my build thread http://www.reefcentral.com/forums/showthread.php?t=2593017