Imaging Spectrographs

Visible Spectrographs

The ImSpector Series offers several visible spectrographs. These spectrographs permit straightforward and cost-effective integration. A visible spectrograph combined with a scientific grayscale CCD or CMOS camera produces a high performance line-scan hyperspectral spectrophotometer for visible spectroscopy imaging.

Visible spectrograph series: Standard and Enhanced. The Enhanced Series offers the best optical performance, and is recommended for high resolution (< 3 nm) applications.

ImSpectors V8 and V8H Standard Visible Spectrographs

There are two separate models for the standard VIS spectrograph, the V8 for 2/3” sensors and the V8H for 1/2” sensors. Both of these models share the same mechanical characteristics.

Visible Spectrograph for Visible Spectroscopy - standard front view (1)Visible Spectrograph for Visible Spectroscopy - standard side view (1)

ImSpector V8E Enhanced Visible Spectrograph

The E-Series model is available for VIS imaging applications that require higher spectral or spatial fidelity.

Visible Spectrograph for Visible Spectroscopy - enhanced front view (1)Visible Spectrograph for Visible Spectroscopy - enhanced side view (1)

For more information, including mechanical drawings, contact our application engineers.

Visible Spectrograph Specifications
  V8H V8 V8E
Optical Characteristics
Spectral Range 380 - 800 nm 380 - 800 nm 380 - 800 nm
Spectral Dispersion 93.6 nm/mm 66 nm/mm 65 nm/mm
Spectral Resolution 8 nm (w/ 80 µm slit) 6 nm (w/ 80 µm slit) 2 nm (w/ 30 µm slit)
Spatial Resolution RMS spot radius < 30 µm RMS spot radius < 30 µm RMS spot radius < 9 µm
Image Size (Spectral x Spatial) 4.8 x 6.6 mm 6.6 x 8.8 mm 6.15 x 14.2 mm
Numerical Aperture F/2.8 F/2.8 F/2.4
Optical Input Standard Standard Telecentric
Average Diffraction Efficiency > 50%, independent of polarization > 50%, independent of polarization > 50%, independent of polarization
Stray Light < 0.5% (halogen lamp, 633 nm long-pass filter) < 0.5% (halogen lamp, 633 nm long-pass filter) < 0.5% (halogen lamp, 633 nm long-pass filter)
Slit Width, default 50 µm (30, 80 and 150 µm available on request) 50 µm (30, 80 and 150 µm available on request) 30 µm (13, 18, 50, 80 and 150 µm available on request)
Slit Length 9.8 mm 9.8 mm 14.3 mm
Magnification 1:1 1:1 1:1
Aberrations
Bending of Spectral Smile < 30 µm (0.70%) Smile < 45 µm (1.05%) Smile < 1.5 µm (0.035%)
Lines Across Spatial Axis
Bending of Spatial Keystone < 20 µm (0.30%) Keystone < 40 µm (0.61%) Keystone < 1 µm (0.015%)
Lines Across Spectral Axis
Astigmatism Insignificant Insignificant None
Mechanical Characteristics
Body Anodized Aluminum Tube Anodized Aluminum Tube Anodized Aluminum Tube
Size (W x H x L) 35 x 35 x 139 mm 35 x 35 x 139 mm 60 x 60 x 175 mm
Weight 300 g 300 g 1100 g
Lens Mount Standard C-mount adapter Standard C-mount adapter Standard C-mount adapter
Camera Mount Standard C-mount adapter Standard C-mount adapter Standard C-mount adapter
User Adjustments Image axis rotation relative to detector rows, adjustable back focal length ± 1 mm (for all)
Environmental Characteristics
Storage Temperature, non-condensing -20 °C to +85 °C -20 °C to +85 °C -20 °C to +85 °C
Operating Temperature, non-condensing +5 °C to +40 °C +5 °C to +40 °C +5 °C to +40 °C

Visible Spectrograph Ordering Information
Part numberDescriptionProduct Name
MRC-304-001-01 ImSpector – Standard VIS Spectrograph V8, 50 μm slit* (default) ImSpector V8
MRC-304-001-02 ImSpector – Standard VIS Spectrograph V8H, for 1/2” image sensor, 50 μm
slit* (default)
ImSpector V8H
MRC-304-001-03 ImSpector – Enhanced VIS Spectrograph V8E, 30 μm slit* (default) ImSpector V8E

* When ordering please specify if different slit width is needed

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