DIY LED Spectrum Analyzer

[giulianom]

Finally managed to get one of my 10,000K 50W LEDs wired up, and captured its spectrum.


Here's a comparison between the 10,000K and 20,000K:

http://spectralworkbench.org/sets/show/10">http://spectralworkbench.org/sets/show/10</a>


20,000K:
[IMG]http://spectralworkbench.org/spectra/show/145">http://spectralworkbench.org/spectra/show/145</a>

10,000K:
[IMG]http://spectralworkbench.org/spectra/show/155">http://spectralworkbench.org/spectra/show/155</a>


The 20,000K LED appears to have more sharp peaks compared to the 10,000K.

As a result, I think the 10,000K has a smoother gradient between the blue/green/red color bands and appears "more white" to the eye.


Also - the respective heights of each line aren't that important, they're more a result of not being able to capture the light from a repeatable distance every time - therefore the lines are higher/lower depending on the capture.

What is more important is the horizontal position of the peaks, and the relative height of the peaks/valleys of the graph.

/NERD

 

[dme330i]

Those spectral plots are quite nice - peaks seem to be in the 455nm range. They also seem illuminate a fairly broad spectrum when compared to most MH lamps. Great work - thanks.

 

[sewer urchin]

I saw this and thought it was an interesting read.

 

[giulianom]

Sewer Urchin;751597 wrote: I saw this and thought it was an interesting read.

http://www.advancedaquarist.com/2012/3/aafeature?utm_source=nivoslider&utm_medium=slider&utm_campaign=clickthru">http://www.advancedaquarist.com/2012/3/aafeature?utm_source=nivoslider&utm_medium=slider&utm_campaign=clickthru</a>[/QUOTE]

Sanjay - that's the guy they were talking about at the ARC meeting.

Thanks for the link!

 

[jbadd99]

I know it's been awhile and was just wondering if anything new had come up? I was intently following this thread until it died.

 

[giulianom]

jbadd99;779258 wrote: I know it's been awhile and was just wondering if anything new had come up? I was intently following this thread until it died.

I ain't dead, just been distracted with other things for a few months...

In short, no, nothing new since then.


I believe I had planned to see if I could compare the spectrums I had captured to those from that researcher mentioned a few posts (and months) back...

I'll see if I can take a look this weekend.



I've been in a holding pattern with getting my tank up and running for the last few months, and I probably won't get any real traction on progress on that until August / September... so.. yeah.