I'm curious to know a little more about what was used to measure
the LED spectra. Not familiar with a "diode spectrometer" and
Google is not being very helpful. The last time I measured optical
spectra was a long long time ago using a PE UV/Visible
spectrophotometer in the early days of semiconductor manufacturing
- used it to measure dielectric thickness (on 1 inch and eventually
2 inch wafers). I'm interested in looking at the spectra of CF
lamps - something which may not be realistic since we retired folks
no longer have access to the fun (and expensive) lab equipment we
used in our pre-retirement days.
I too would like to know more about the tool used to create those plots.
What I use is a 'manual' direct vision spectrophotometer which I
bought from Surplus Shed:
http://www.surplusshed.com/pages/item/i1479d.html
for $49 you can't really go wrong...however, when I have a bit of
spare coin I plan on buying a better one:
http://www.surplusshed.com/pages/item/l3524.html
You see, the $93 one actually has a scale in it, the cheap one does not!
They also sell much higher grade ones for $200-400 that do a good
deal more (angle measurements etc).
But nothing that attaches to a computer for pretty plots. So I'm
intrigued as well.
Tom Frank, KA2CDK
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