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THORLABS SLS201L User Manual

THORLABS SLS201L
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Compact Stabilized Light Sources Chapter 3: Product Overview
Rev F, October 14, 2021 Page 5
3.3. Spectrum
The SLS201L tungsten halogen light source generates visible to IR output as far
as 2600 nm, with a color temperature of 2796 K. The SLS202L generates output
from 450 to 5500 nm with a color temperature of 1900 K. Figure 3 shows the typical
output spectra of SLSL201L and SLS202L compared to a theoretical black body
spectrum at the corresponding temperature.
Figure 3 Typical Spectra
3.4. Optical Configuration
SLS201L/SLS202L are Tungsten Light Sources. The bulb is placed inside the
housing, at the back focus of the 1
st
lens. The lens roughly collimates the output
from the bulb and then a 2
nd
lens focuses the collimated beam into a multimode
fiber patch cable, providing a fiber coupled broadband light source. Figure 4 shows
the outline of beam path in SLS201L and SLS202L.
Figure 4 Basic Optical Configuration of SLS201L/SLS202L
The bulb and the collimating lens is located in the main body of the light source
while the focusing lens is placed in a removable fiber coupler at the front the light
Tungsten
Halogen Bulb
Collimating
Lens
Fiber Patch Cable
Lens
Light Source Main Body
Removable
Fiber Coupler

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THORLABS SLS201L Specifications

General IconGeneral
BrandTHORLABS
ModelSLS201L
CategoryLighting Equipment
LanguageEnglish

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