Spectrometers & monochromators
Omni-S Imaging Spectrometers & Monochromators
Three imaging-corrected grating platforms with 320, 500 and 750 mm focal lengths. Interchangeable triple-grating turrets support wavelength scanning and array-camera spectroscopy; the 500S adds motorised focus adjustment for each grating.
Best suited to
Research spectroscopy requiring a choice between throughput, resolution and camera imaging.
Selecting a configuration
Start with the required wavelength interval and detector pixel size. Specify the grating, slit width and entrance/exit geometry together: a longer focal length narrows the band captured on a fixed detector.
Measurement & configuration
- Triple-grating turret; gratings selected separately.
- Manual slit supplied; motorised options depend on port.
- USB control and optional configurations for UV or infrared optics.
Plan the signal path
- 1Entrance slit
- 2Grating dispersion
- 3Slit or array readout
Specifications
| Focal plane | 30 × 14 mm |
|---|---|
| Grating size | 68 × 68 mm |
| Slit width | 0.01–3 mm |
| Slit heights | 2, 4 or 14 mm |
| Wavelength step, 1200 lines/mm | 0.005 nm |
| Wavelength accuracy, 1200 lines/mm | ±0.2 nm |
| Repeatability, 1200 lines/mm | ±0.025 nm |
| Communication | USB 2.0; RS-232 configuration dependent |
Platform comparison at 1200 lines/mm
| Platform | Focal length / aperture | Slit resolution¹ | CCD resolution² | Weight |
|---|---|---|---|---|
| Omni-λ300s | 320 mm / f/4.2 | 0.08 nm | 0.173 nm | 20 kg |
| Omni-500S | 500 mm / f/6.5 | 0.05 nm | 0.11 nm | 27 kg |
| Omni-λ750S | 750 mm / f/9.7 | 0.03 nm | 0.054 nm | 40 kg |
¹ 10 µm slit near 435.83 nm. ² Published values for 15 µm CCD pixels. Spectral coverage depends on grating and detector; mechanical scan limits do not imply optical response.
Related spectrometers & monochromators
Configure Omni-λ300s / Omni-500S / Omni-λ750S
Send the wavelength interval, signal level, timing and sample requirements for your experiment.