STS Miniature Fiber Optic Spectrometer Microspectrometer
Ocean Optics has developed a low-cost, high-performance spectrometer based on a CMOS (complementary metal oxide semiconductor) sensor. This spectrometer is particularly suitable for embedding in OEM devices. Although the STS is very small, only 40mm x 42mm x 24mm, its performance is in no way inferior to large systems. STS is the ideal choice for visible-near infrared spectroscopy applications, such as spectral photometric and color measurement of LEDs and transmission and absorption measurement of samples. It is also an ideal choice for OEM applications, especially in application environments that require online monitoring of one or more spectral lines and require highly reproducible and stable results. The STS miniature fiber optic spectrometer has two standard configurations: 350-800 nm and 650-1100 nm. High-volume OEM customers can also customize the wavelength range, entrance aperture and other optical accessories. Unlike other miniature spectrometers, the STS has a built-in shutter to enable dark background measurement. The separately priced operating software provides comprehensive spectral acquisition and analysis functions including shutter control. Customers can also customize the STS operating software as needed. The core of the STS miniature fiber optic spectrometer is a 1024-pixel CMOS detector, which is located in a crossed Czerny-Turner optical bench. What makes this optical bench different is its specially designed collimating mirror and focusing mirror, as well as a grating with a groove density of 600 lines per mm. Its optical design and advanced CMOS detector enhance the performance of the STS, making it comparable to expensive large spectrometers. For example, the STS has a 14-bit A/D, power consumption of only 0.75w, and through a customized entrance aperture, can fully achieve an optical resolution of less than 1.0 nm (FWHM). This is also why the STS is so attractive. Our new 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 provides full spectral analysis with low stray light and high signal-to-noise ratio. STS boasts optical resolution of ~1.5 nm (FWHM) 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. Plus, its built-in shutter makes taking dark measurements more convenient.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Dimensions | 40 mm × 42 mm × 24 mm |
| Weight | 68 g (2.4 oz.) |
| Detector-Type | ELIS1024, 1024 pixel linear CMOS |
| Detector-Range [uncoated] | 200-1100 m (uncoated) |
| Detector-Pixels/size | 1024, 7.8 μm x 125 µm |
| Wavelength range | VIS (350-800 nm), NIR (650-1100 nm) |
| Optical resolution (FWHM) [w/15 µm slit] | 1.2-1.4 nm FWHM (w/15 µm slit) |
| Signal-to-Noise ratio [maximum signal] | 2000:1 (maximum signal) |
| A/D resolution | 14 bits |
| Dark noise [RMS] | <3 counts RMS |
| Dynamic range [system, 10s maximum integration] | 6x10⁷ s (system, 10 s maximum integration) |
| Integration time | 1 ms - 10 s |
| Corrected linearity [10-90% saturation] | 0.5 % max deviation from best fit line (10-90% saturation) |
| Max dark current | 75 counts/second |
Key Features
Datasheet
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