Test & Measurement

STS Microspectrometer Provides Big Performance in a Small Footprint

18th February 2011
ES Admin
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Ocean Optics has introduced a family of low-cost, high-performance CMOS detector-based spectrometers that are ideal for embedding into OEM devices. Despite its tiny footprint – less than two inches square (40 mm x 42 mm) and one inch (24 mm) high – STS provides performance comparable to larger systems: full spectral analysis with low stray light, high signal to noise (>1500:1) and typical optical resolution of ~1.5 nm (FWHM). STS is a great option for a range of VIS-NIR applications including characterization of LEDs and absorbance/transmittance of various samples and is ideal for OEM applications where one or more wavelengths are being monitored and highly reproducible results are necessary.
/> The STS Microspectrometer is available in standard models with 350-800 nm and 650-1100 nm wavelength coverage. Customization of wavelength range, entrance aperture and other optical bench accessories is available for high-volume and OEM customers. Also, unlike other microspectrometers, STS has a built-in shutter for making dark measurements. Operating software is priced separately and provides a full range of spectroscopic functions as well as control of the shutter. Packages for developing customized software for STS are also available.

At the heart of the STS is a 1024-element CMOS detector in a crossed Czerny Turner optical bench. The bench is distinguished by specially designed collimating and focusing mirrors and a 600 lines/mm groove density grating. Its optical design and advanced CMOS detector elevate STS to performance levels comparable to larger and more expensive spectrometers. For example, STS has 14-bit A/D resolution and has low power consumption of just 0.75 W. Also, with customization of the entrance aperture, optical resolution <1.0 nm (FWHM) is possible. This makes STS an attractive option for a wide range of applications.

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