Ocean Optics S2000 - Manual (Page 82)

FOIS-1 Fiber Optic Integrating Sphere
The FOIS-1 F IBER O PTIC I NTEGRATING S PHERE is a sampling optic that accepts light energy through its 0.375"
input port and funnels it to an optical fiber for emission experiments -- such as measuring the spectral properties
of LEDs and other light sources. The FOIS-1 consists of a 1.5" Spectralon sphere encased in an aluminum
housing, with a 0.375" input port that accepts light energy from 200-1100 nm and a SMA connector for coupling
to the spectrometer.
Application Tips
" The FOIS-1 is small and compact -- it's just 2.25" x 2.25" x 2.125" and weighs less than 1 pound -- yet is
durable enough for use outside the laboratory.
" The inside of the FOIS-1 is made from Spectralon, a white diffusing material that provides a highly
lambertian reflecting surface.
Operation
The FOIS-1 is very easy to operate.
1.
Connect an optical fiber (the read fiber) from the FOIS-1's
SMA-terminated output port to the SMA termination of
the spectrometer.
2. Insert your emission source into the 0.375" black input port of
the FOIS-1. Or, configure your setup so that the emission source
is aligned so that the light energy can enter the input port.
3. To collect radiation (light) from a 180° field of view, thus
eliminating light collection interface problems inherent to other
sampling devices, make sure that you do not insert your
emission source too deeply into the FOIS-1. If you insert the
emission source into the FOIS-1 to the point where it interferes
with the SMA-terminated output port, you will not collect
radiation from a 180° field of view.
4. Use the 2 mounting holes for mounting the FOIS-1 to other
components. There is a 1/4"-20 threaded hole and an 8-32
threaded hole.
Specifications
Sampling Optics: FOIS-1
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Spectral range: 200-1100 nm
Dimensions: 2.25" x 2.25" x 2.125" (LWH)
Sample port aperture: 0.375"
Sphere coating: Spectralon
Top cap mounts:
(2) 6-32 threaded holes
(2) 8-32 threaded holes
(1) 1/4"-20 threaded hole in center
Side mounts:
SMA connector for coupling optical fiber to the spectrometer
8-32 threaded holefor 74-OPM Optical Post Mount
Connector: SMA 905
FOIS-1 mounted onto one arm of the 74-ACH