Ocean Optics LS-1-CAL User Manual

LS-1-CAL Seri es

Calibration Light Sources

Installation and Operation Instructions

Description

The LS-1-CAL and the LS-1-CAL-INT are tungsten halogen light sources that you can use to calibrate
the absolute spectral response of your system. Each light source emits a spectral intensity that is
calibrated by standards that provide traceability to the National Institute of Standards and Technology
(NIST).

The bulbs used in the LS-1-CAL and the LS-1-CAL-INT have a bulb life of 900 hours. Each lamp
also features a 12 VDC regulated power supply. The lamps are effective in calibrating the absolute
spectral response of a system from 350-1050 nm. When the lamps are combined with Ocean Optics
software, you can calculate the absolute spectral intensity of an emissive sample. Furthermore, each
light source can be used when calculating absolute irradiance or absolute irradiance and emissive color
(with Ocean Optics software).

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LS-1-CAL Installation and Operation Instructions

The LS-1-CAL Series of calibrated light sources are designed for use in the VIS-Shortwave NIR
(350–1050 nm). It provides known absolute intensity values at several wavelengths, expressed in
µW/cm

2

/nm. Since the spectral intensity of the LS-1-CAL is traceable to the National Institute of
Standards and Technology (NIST), it is specifically designed for calibrating the absolute spectral
response of your system.

The primary difference between the LS-1-CAL and the LS-1-CAL-INT is the Teflon diffusion disc
that is installed in place of the SMA 905 Connector found on the LS-1-CAL. The LS-1-CAL-INT is
designed to work with the FOIS-1 Fiber Optic Integrating Sphere. The Teflon disc on the LS-1-CAL­INT fits snugly into the optical aperture on the FOIS-1, providing a uniform light source optimized for
the FOIS-1.

The LS-1-CAL-INT can be used with other integrating spheres. However, the optical aperture on the
integrating sphere must be large enough to accommodate the Teflon disc on the LS-1-CAL-INT, as the
Teflon disc must be fully inserted into the integrating sphere. The LS-1-CAL-INT is not effective
when the Teflon disc is placed up against an integrating sphere aperture that is too small to
accommodate the disc size.

Note

The LS-1-CAL is NOT designed to operate as an excitation source in your

experiments.

Parts Included

The LS-1-CAL Series light source ships with the following items:

 LS-1-CAL or LS-1-CAL-INT Calibrated Light Source
 Switching AC adapter (for power stabilization)
 Power cord for the power supply
 Floppy disk or CD containing calibration lamp report files (.lmp). The LS-1-CAL has two

lamp reports; one for using the LS-1-CAL with a bare fiber and one for using the LS-1-CAL

with a CC-3 cosine-corrected irradiance probe.

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LS-1-CAL Installation and Operation Instructions

Additional Accessories

The following are additional accessories available from Ocean Optics that you may need, depending
on your system set-up:

• Spectrometer

• SMA-terminated optical fiber or CC-3 cosine-corrected irradiance probe

• Ocean Optics software

WARNING

The light source becomes extremely hot during operation and does not contain a

cooling fan. Handle with extreme care during operation.

Connecting the Light Source

The set-up procedure differs slightly, depending on whether you are connecting the LS-1-CAL to a
bare fiber or a cosine corrector. The LS-1-CAL-INT connects to an integrating sphere such as the
Ocean Optics FOIS-1 Fiber Optics Integrating Sphere.

Connecting the LS-1-CAL

► Procedure

1. Use a 0.050 Allen wrench to loosen the setscrew on the SMA connector of the LS-1-CAL.

2. If using a bare fiber with the LS-1-CAL:
a. Remove the inner barrel from the SMA connector.
b. Screw this connector barrel onto the end of the fiber until the connection is tight.
c. Insert the barrel and fiber completely into the SMA connector of the LS-1-CAL.

If using a CC-3 cosine corrector with the LS-1-CAL:

a. Remove the inner barrel from the SMA connector.
b. Screw the CC-3 cosine corrector onto the end of the fiber until the connection is tight.
c. Insert the CC-3 and fiber completely into the SMA connector of the LS-1-CAL.

3. Use the Allen wrench to tighten the setscrew on the SMA connector or CC-3 of the LS-1-

CAL.

4. Screw the other end of the fiber into the SMA connector of the spectrometer.

5. Plug the switching AC adapter (black rectangular box) into the back of the LS-1-CAL. This

adapter stabilizes the power coming into the lamp to insure constant spectral intensity

6. Plug the power cord into the back of the switching AC adapter, then plug the other end of the

power cord into a standard outlet.

7. Switch the lamp on using the on/off switch on the back of the LS-1-CAL.

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