LED Source Tests

RSL August 2012

http://www.oceanoptics.com/technical/LLSLightSource.pdf

Blu Loop

LLS Cool White – see the last page of:

http://www.oceanoptics.com/Products/bluloop.asp

t

600 um core fiber, goes to small integrating sphere; plan is to swap at source

fiber going to source(s); P/N QP-600-2-SR

integrating sphere; M/N FOIS-1

SEI M/N SR-3500 spectroradiometer

SR-3500 input optical fiber

zoomed sphere/SR-3500 fiber end (it is inside the sphere)

test plan• Warm up: take a dark, turn on source, take one lite (an average of

10 scans) every 5 min for 3 – 4 hours• Repeatability: repeat with the other LED source by changing the

600 um patch fiber at the source end (also covers warm-up)• Do this for a couple of days (tests repeatability of source level and

effect of decoupling and recoupling the SMA connector at the source/fiber junction)

• Turn on both sources, leave them on several days, swap fiber back and forth, acquiring data every 2 h or so

• Move SEI bare fiber to NPR to get a calibration• If time and data look good, move sources to

temperature/humidity chamber and measure levels