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SM642 High Resolution Spectrometer

The Choice for Low Signal Level Applications

- High Resolution optical bench
- Scientific-grade high performance with low cost
- Low dark noise and stray light
- Good dynamic range and high signal to noise ratio
- High Ultraviolet Quantum efficiency
- Flexible optical input direct to slit or via fiber
- Designed from the ground up for a wide range of applications
- Highspeed data acquisition
- Standard design allows up to 200 - 1050nm range


Spectral Products is offering the new SM642 non-TE cooled Back-Thinned 2048pixel array CCD spectrometer. The SM642 provides high quantum efficiency in UV and high dynamic range. The detector used in the SM642 HRS has 2048 pixels and helps to get better resolution. It is ideal for UV/VIS/NIR spectrometry that requires high signal to noise ratio and/or high dynamic range. The back-thinned CCD has excellent sensitivity in UV and allows deep UV application, even below 200nm. Well designed housing allows up to 75nm measurement window within 200~1050nm for 0.2nm optical resolution with very low stray light. The Back-Thinned detector to measure very low light signal by reducing the noise level in long integration time.

NOTE: Please click SM642-HRS for the brochure file.

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- SM32Pro - Windows (32-bit/64-bit) based software for data acquisition and analysis

- Transmission, reflectance, and absorbance measurements

- Data export, zoom in and out, spectrum overlays, and many more features

- Color analysis tools included

- Signal average and integration time control

- DLL libraries available for easy user software development

- VC++ / VB / LabView / Matlab examples available




Hamamatsu S10420-1106 non-TE-cooled Back-Thinned CCD

Pixel: 2048 x 64
Sensing Pixel size: 14µm x 14µm
Well depth: 200 Ke-
Quantum efficiency: > 90% @650nm, 65% @250nm

Spectral Resolution

0.1 - 7.0nm FWHM

Spectral Range

Full Range: 200 - 1050nm
UV Range: 200 - 450nm
VIS Range: 380 - 760nm
NIR Range: 550 - 1050nm

Spectrograph f#


Fiber Coupler

SMA 905 or FC standard

Stray Light

< 0.01% @632nm (< 0.5% avg)

Dark Noise RMS

< 7 RMS counts @35ms

Signal to Noise Ratio

450 : 1
min. Integration time


Trigger mode

Free Run mode
S/W Trigger mode
H/W Trigger mode

Orders Sorting Filter

Longpass filter or linear variable filter installed per wavelength coverage

Computer Interface

USB 1.1 / 2.0 compatible

SDK Support

Visual C++, Visual Basic, LabView, Matlab


8.66 x 6.89 x 3.36 inches

(22.0 x 17.5 x 8.55 cm)


6.61 lbs

(3.0 kg)

Slit Options

10, 25, 50, 100, 200, and 400µm

Temperature Induced Shift

±1 pixels per ±15°C