Comments on: Laser-Based Lighting — Bright, Efficient Alternative To LEDs Developed

By: David Shiller

David Shiller — Fri, 11 Oct 2013 13:43:00 +0000

Droop refers to reduced efficiency as current is increased through the LED. It does not refer to lumen depreciation, which is a reduced light output over time.

By: Ivor O'Connor

Ivor O'Connor — Mon, 07 Oct 2013 15:52:00 +0000

Thanks Cees.

I have no idea what induction is so I’ll keep my eyes open for it. Interesting website.

By: Cees Timmerman

Cees Timmerman — Mon, 07 Oct 2013 14:02:00 +0000

It’s termed “lumen depreciation”. Here’s some nice graphs comparing different tech: http://www.gilus.us/energy%20charts.html

It looks like LED is second best to induction at keeping up appearances.

By: Ivor O'Connor

Ivor O'Connor — Fri, 04 Oct 2013 02:00:00 +0000

Do you have any references to this? Because when I search for incandescent droop all I seem to get are the pages and pages of information related to LED droop…

By: Ivor O'Connor

Ivor O'Connor — Fri, 04 Oct 2013 01:35:00 +0000

Did not know that. From all the talk I had the impression droop in LEDs were dramatic and something only experienced with LEDs.

Never made it to walmart today. Hopefully I’ll pick one up tomorrow morning.

By: Omega Centauri

Omega Centauri — Fri, 04 Oct 2013 01:28:00 +0000

All lighting sources have droop. Florescents, and incandescents droop as well. The later largely because tungsten is gradually deposited on the glass covering. So the output level of an LED drops by a fraction of a percent per year.

By: Greg

Greg — Fri, 04 Oct 2013 01:25:00 +0000

So is it MORE efficient than LEDs? That’s all that matters.

By: Ivor O'Connor

Ivor O'Connor — Thu, 03 Oct 2013 15:40:00 +0000

I wonder if LEDs currently rated for say 50,000 hours take into account the “droop”. I have a cynical suspicion 50,000 hours is for when it quits working altogether. I’m thinking LEDs need to be clearly labeled as “X hours till droop, Y hours after droop.”