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OEM Spectrometer Selection Guide
The VS7000-CCD DUAL and QUAD systems for industrial OEM applications use 2-4 VS70 optical engines optimized for UV-VIS or VIS or UV-NIR Multi-spectral Systems.
| Spectral coverage | UV-VIS (200–860 nm), 250 nm optimized grating, built-in order-sorting filter (DUAL only) VIS (380–750 nm), VIS-blazed grating, built-in long-pass filter (DUAL) VIS (470-730 nm), VIS-blazed grating, built-in long-pass filter (QUAD) UV-NIR (200–1050 nm), dual-blaze grating, built-in order-sorting filter (DUAL) |
| Numerical aperture | f/2.3 |
| Stray light rejection & Cross-talk | Stray light: 0.02 (max) for UV-VIS configuration with 300 µm tall CCD, measured at 700 nm (measured with broad bandpass 510 nm filter, 75 µm slit-width) Cross-talk: 0.1% (max) |
| CCD detector Typical QE | Back-illuminated CCD with low etaloning in NIR 65% peak QE in UV |
| Detector height Fiber-optic option | 300 µm CCD height standard (1000 µm optional) 200-400-600 µm dia., 1.5 m long fiber-optic (for 1 mm tall CCD, prefer 600-800 µm dia.) |
| Thermoelectric stabilization | None. Dark current and CCD-pattern noise must be subtracted. User must switch off light source or install manual shutter in optical path. |
| Spectral resolution Pixel resolution Slit (factory configuration) | UV-VIS: 75 µm slit, 2048 pixels, 2.7 nm resolution; 0.33 nm/pixel (configuration with 300 µm tall CCD) Available slits: 12-25-37-50-62-75-100-125-150-200 µm (contact us for other gratings) |
| CCD full well Raw non linearity Factory corrected linearity | 2 options: 250 or 350 ke– <1.5% <0.4% |
| Dynamic range | Up to 10,000:1 |
| A/D converter | 16 bit, 2-3 MHz (pixel rate) |
| Typical dark current | 50 e-/pixel/sec at 20°C (room temp.) |
| Typical readout noise | 30-35 e– RMS |
| Readout speed | (1.3) ms; 890 (760) spectra/s with 0 ms exposure time with respectively 300 µm (1000 µm) CCD height (with fast CCD option) |
Specifications, form factor, and spectrometer cover subject to change without notice.
