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LS-1 Tungsten Halogen Light Source
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The
LS-1 Tungsten Halogen Light Source is a versatile white-light source
optimized for the VIS-NIR (360-2500 nm). The
lamp offers high color temperature, highly efficient output and long
life in a compact, economical package. The LS-1 is available with a 900-hour,
3100 K bulb or a 10,000-hour, 2800 K bulb.
The LS-1 features an SMA 905
Connector for easy coupling to Ocean Optics fiber optic spectrometers and accessories, including
optical fibers, cuvette holders and probes
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LS-1 Features
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VIS-NIR
spectral range (360-2000 nm). Useful for chemical analysis,
reflectivity of solid objects and color measurement
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High
color temperature, efficient output
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Available
with color-correcting and signal-attenuating accessories for
user-controlled manipulation of light source output.
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900-hour
or 10,000-hour bulbs
Included with the LS-1 are a
1/2" OD BG-34 filter for color correction and Teflon diffusing disks
for attenuation of light source output. The LS-1 comes with a 12 VDC power
supply (a European power supply is also available) and a power cord.
The LS-1 is available for $577. Additional
LS-1 models are also available.
The LS-1 features an SMA 905
Connector for easy coupling to Ocean Optics fiber optic spectrometers and accessories, including
optical fibers, cuvette holders and probes.
What's more, a built-in slot accepts loose optical filters up to 3 mm in thickness. Either LS-1
version can be installed with spectrometers and other devices into a multi-device
rack unit or desktop box.
Included with the LS-1 are two accessories
that may be useful for certain measurements. The 1/2" OD BG-34 filter
can be installed into the light source to enhance the signal in the blue
region relative to the red and NIR regions (see the first graph below).
This filter also has an attenuating effect so that users should adjust
spectrometer integration times (by as much as 2-3 times longer) to achieve
desired signal amplitude.
Three Teflon disks of various thickness are
also available. These disks are used to create a diffuse source that is
optimal for coupling into fibers and attenuating the overall signal when
spectrometer saturation is an issue and other attenuation methods (such as
adjusting spectrometer integration times) are impractical or undesirable.
The disks attenuate approximately 50%, 75% and 99% of the signal,
respectively. With a disk installed, the change in lamp output during
the warm-up period is slightly more noticeable than without the disk.
However, the time to achieve stabilized output (~30 minutes) is
unaffected.
LS-1 and LS-1-LL Spectral Output
User's Tips:
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The LS-1 bulb is housed in a glass
envelope that cuts off light <360 nm. The LS-1 should not be
used for applications where illumination <360 nm is required.
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The raw data (or scope mode) referred to
in the graph above is the raw voltage coming out of the A/D converter,
which is part of the spectrometer system.
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Though the LS-1 emits energy to 2.5 µm,
its use with Ocean Optics spectrometers is limited by the
spectrometer's detector response, which cuts off at ~1100 nm.
LS-1
Specifications
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Spectral
range:
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360-2500 nm
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Dimensions:
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9.0 cm x
5.0 cm x 3.2 cm; 3.5" x 2.0" x 1.25"
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Power
input:
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12 VDC/800
mA; 7-28 VDC/0.4-2 amps
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Power
output:
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6.5 watts
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Bulb life:
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900 hours
(standard); 10,000 hours (long-life)
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Bulb color
temperature:
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3100 K
(900-hour bulb); 2800 K (10,000-hour bulb)
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Output to
bulb:
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5 volts/1.3
amps
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Output
regulation:
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0.2%
voltage
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Time to
stabilized output:
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~20 minutes
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Stability:
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decay rate is ~0.1%/hour
of the output power
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Bulb
output:
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7400
foot-candles (7.4MSCP)
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Internal
filter accessory:
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BG-34
conversion filter
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External
filter slot:
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accepts
filters up to 3 mm thickness
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Spectral
attenuation:
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50%, 75%
and 99% with PTFE disk accessories
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Connector:
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SMA 905
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* If used with an Ocean Optics
spectrometer, the LS-1's practical spectral range is limited to the
spectral response of the detector -- for the USB2000, approximately 1100 nm
(1.1 µm).
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LS-1
Ordering Information
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Item Code
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Product
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Price
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LS-1
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Tungsten Halogen Light Source with
900-hour bulb, 12 VDC power supply, BG-34 color-correcting filter
and Teflon diffusing disks.
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$577 |
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LS-1-LL
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Long-life Tungsten Halogen Light
Source with 10,000-hour bulb, 12 VDC power supply, BG-34
color-correcting filter and Teflon diffusing disks.
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$635 |
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R-LS-1
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Rack-mounted LS-1 Tungsten Halogen
Light Source; BG-34 color-correcting filter and Teflon diffusing
disks are included.
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$577 |
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R-LS-1-LL
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Rack-mounted Long-life LS-1-LL
Tungsten Halogen Light Source; BG-34 color-correcting filter and
Teflon diffusing disks are included.
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$635 |
LS-1
Accessories
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Item Code
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Product
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Price
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LS-1-B
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900-hour replacement bulb for LS-1
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$48 |
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LS-1-LL-B
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10,000-hour replacement bulb for
LS-1-LL
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$58
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OF2-LS
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Filter set designed for use with
LS-1 includes BG-34, GG395 and OG550 filters, as well as Teflon
diffusing disks.
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$219
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FCBARREL
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0.25" diameter barrel
accommodates optical fibers with FC terminations; replaces
standard SMA port on LS-1 Tungsten Halogen Light Source.
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$31
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LS-1-CAL
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NIST-traceable Calibrated Tungsten
Halogen Light Source (300-1050 nm) with 900-hour
bulb (3100 K) and regulated 12 VDC power supply. Note: The
LS-1-CAL is NOT intended for use as an illumination source.
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$866
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Contact
an
Ocean Optics
Applications Scientist
LS-1
Specifications
LS-1-CAL
Calibrated Light Source
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