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STS Ultra Compact Spectrometer


Full Spectral Analysis in a Tiny Footprint. STS Microspectrometer is a remarkably small CMOS-based unit that is less than 50 mm square and weighs just over 2 ounces. This ultra-compact spectrometer is ideal for OEM devices and educational settings, contact White Bear Photonics for quantity discounts. STS provides full spectral analysis with low stray light and high signal-to-noise ratio. STS boasts optical resolution of ~1.5 nm (FWHM) with a 25 µm slit and is particularly suited for high-intensity applications such as LED characterization and absorbance/transmission measurements.

STS meets or exceeds optical resolution, stability, sensitivity and other performance criteria associated with larger, more expensive spectrometers. STS is available with a 1cm fiber that has a 400 µm core diameter and can be configured with 10, 25, 100 or 200 µm slits. Choose STS-VIS for 350-800 nm wavelengths or STS-NIR for 650-1100 nm.

Contact White Bear Photonics for your OEM application or questions on system integration.  We offer discounts based on quantity, for OEM, education, and others who need multiple systems.



40 mm x 42 mm x 24 mm


68 g (2.4 oz.)



ELIS1024, 1024 pixel linear CMOS


200-1100 m (uncoated)


1024, 7.8 x 125 µm


Wavelength range:

VIS (350-800 nm), NIR (650-1100 nm), UV(190-600)

Optical resolution:

1.5 nm FWHM (w/ 25 µm slit)

Signal-to-Noise ratio:

>1500:1 (maximum signal)

A/D resolution:

14 bits

Dark noise:

Dynamic range:

6 x 109 (system, 10s maximum integration), 4600 single acquisition

Integration time:

10 µs - 10 s

Corrected linearity:

0.5% max deviation from best fit line (10-90% saturation)

Max dark current: