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STS Microspectrometer

/ Spectrometers

Amazing Full-Spectrum performance in a Tiny Footprint

The STS introduces a family of compact, low-cost spectrometers that’s ideal for embedding into OEM devices. At just 40 mm x 42 mm x 24 mm (1.6” x 1.7” x 0.9”), the STS provides full spectral analysis with low stray light, high signal to noise ratio and optical resolution of ~1.5 nm (FWHM) – remarkable performance for a spectrometer that size. The STS is an especially attractive option for high-intensity applications such as LeD characterization and absorbance/transmission measurements, yet versatile enough for an extensive range of spectral sensing requirements. At the heart of the STS is a cMoS detector in a crossed czerny Turner optical bench. The bench is distinguished by custom-molded collimating and focusing mirrors and a 600 lines/mm groove density grating that projects spectra onto the detector.

  • Optical resolution of ∼1.5nm (FWHM)
  • Produces less stray light than most filter-based and other spectrometers of its size
  • High thermal stability with low baseline drift
  • Great signal-to-noise ratio (>1500:1) and dynamic range (4600:1) performance
  • Available in UV (190-650 nm), Vis (350-800 nm) and NIR (650-1100 nm) models
  • STS Developers Kit for easy integration
  • Full Spectral Analysis in a Small Footprint
  • cMoS-based unit is less than 50 mm square
  • Weighs just 68 g
  • Ideal for oeM Devices
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  • OeM and high-volume applications
  • Life sciences
  • Medical diagnostics
  • Solid state lighting
  • Environmental analysis
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Physical
Dimensions40 mm x 42 mm x 24 mm
Weight68 g (2.4 oz. ), incl. fixed fiber
Operating temperature0-50 °c, 5 °c change/hour ramp
Storage temperature-20 to +75 °c
Detector
Detector typeeLiS-1024, 1024 pixel linear cMoS
Detector range200-1100 nm (uncoated)
Pixels/size1024, 7.8 x 125 μm
Pixel well depth800,000 e-
Optical Bench
DesignCrossed czerny Turner, focal length 28 mm
Entrance apertureShaped aperture; 10 μm, 25 μm, 100 μm and 200 μm slits
Gratings600 l/mm
Fiber optic connector10 cm x 400 μm fixed fiber (not detachable)
Quantum efficiency60% (@ 675 nm)
Spectroscopic
Wavelength rangeViS (350-800 nm), Nir (650-1100 nm)
Optical resolutionFWHM 1.0 nm (10 μm slit), 1.5 nm (25 μm slit), 6.0 nm (100 μm slit), 12.0 nm
(200 μm slit)
Signal-to-noise ratio1500:1 (maximum signal)
A/D resolution14 bits
Dark noise≤ 3 counts rMS
Dynamic range6x109 (system, 10 s max integration), 5600 single acq.
Integration time10 μs-10 s
Max. dark current75 counts/second
Electronics
Power consumption0.75 W (average)
Power optionsUSB or Gpio port
Data transfer speedUSB full speed
Acquisition time75 scans/second
ConnectorMicro-USB
Inputs/OutputsGpio
Breakout boxAvailable
Trigger modes3 modes
Strobe functions Single/continuous
Gated delay featureYes
Computer requirements
Computer interfaceUSB 2.0, rS-232
Operating systemsAny supported by omniDriver/SeaBreeze or rS-232
Compliance
Ce markYes
RoHSYes

We offer STS models for 190-650 nm (STS-UV), 350-800 nm (STS-ViS) and 650-1100 nm (STS-Nir) applications.

Each unit has a fixed optical bench configuration. custom configurations are available for high-volume applications. To optimize signal collection efficiency and improve reproducibility, STS utilizes a fixed-fiber design. The fiber has a 400 µm core and is 10 cm in length. The STS is fully operational in SpectraSuite spectroscopy software. operating and development software are priced separately.

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