Monochromators and SPE · Imaging Monochromator
Omni-λ3018i
Imaging Monochromator | IR coating based on Omni-λ3008i
Product range
Where Omni-λ3018i fits
Omni-λ3018i is listed in the Imaging Monochromator family. The local catalog record provides these first selection fields: Focal length: 320 mm; Aperture ratio: f/4.2; Resolution (PMT): 0.08 nm.
Specifications
| Focal length | 320 mm |
|---|---|
| Aperture ratio | f/4.2 |
| Resolution (PMT) | 0.08 nm |
| Resolution (CCD, 26 µm) | 0.173 nm |
| Dispersion | 2.29 nm/mm |
| Measurement conditions | 1200 g/mm grating at 435.8 nm, 10 µm slit width; PMT at 4 mm slit height, CCD with 26 µm pixels |
| Wavelength accuracy | ±0.2 nm |
| Wavelength repeatability | ±0.025 nm |
| Step size | 0.005 nm |
| Stray light | 1×10⁻⁵ |
| Focal plane size | 30 (w) × 14 (h) mm |
| Optical axis height | 146 mm |
| Slit | Width 0.01–3 mm, motorised or manual; height 2, 4 or 14 mm selectable |
| Grating size | 68 × 68 mm |
| Grating mount | Interchangeable triple grating turret |
| Interface | USB 2.0 and RS232 |
| Dimensions | 420 × 295 × 232 mm |
| Weight | 16 kg |
Product comparison
Check a reference product
Considering Omni-λ3018i for an existing setup? Send us the reference product number and your required specifications. Our engineers can help check the function, configuration, dimensions and interfaces.
Ask our engineers →System integration
Integration and compatibility
Use these checks to connect Omni-λ3018i to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Spectral range and resolution
- Resolution (PMT): 0.08 nm · Resolution (CCD, 26 µm): 0.173 nm
- Resolution is a budget, not a property: focal length, groove density, slit width, diffraction order and detector pixel pitch all enter it, and the quoted figure applies only at the wavelength and slit width it was measured at.
- Grating and dispersion
- Focal length: 320 mm · Dispersion: 2.29 nm/mm
- Confirm the installed gratings, their blaze wavelength and the turret population. A shared chassis name does not imply the same grating set, and blaze position decides efficiency far more than groove density alone.
- Slits and optical ports
- Aperture ratio: f/4.2 · Slit: Width 0.01–3 mm, motorised or manual; height 2, 4 or 14 mm selectable
- Match the input f-number to the instrument, not the other way round. Overfilling the acceptance cone adds stray light and no signal; underfilling wastes throughput you have already paid for in aperture.
- Detector interface
- Focal plane size: 30 (w) × 14 (h) mm · Interface: USB 2.0 and RS232
- Match the detector active height and pixel pitch to the focal-plane dispersion before committing to a mount, then confirm wavelength calibration, scan repeatability and trigger behaviour for the acquisition you intend.
Technical FAQ
Integration questions for Omni-λ3018i
What spectral range and resolution does the Omni-λ3018i cover?
Resolution (PMT): 0.08 nm · Resolution (CCD, 26 µm): 0.173 nm. Resolution is a budget, not a property: focal length, groove density, slit width, diffraction order and detector pixel pitch all enter it, and the quoted figure applies only at the wavelength and slit width it was measured at.
Which gratings does the Omni-λ3018i take?
Focal length: 320 mm · Dispersion: 2.29 nm/mm. Confirm the installed gratings, their blaze wavelength and the turret population. A shared chassis name does not imply the same grating set, and blaze position decides efficiency far more than groove density alone.
What slit and port configuration does the Omni-λ3018i have?
Aperture ratio: f/4.2 · Slit: Width 0.01–3 mm, motorised or manual; height 2, 4 or 14 mm selectable. Match the input f-number to the instrument, not the other way round. Overfilling the acceptance cone adds stray light and no signal; underfilling wastes throughput you have already paid for in aperture.
Which detectors mount to the Omni-λ3018i?
Focal plane size: 30 (w) × 14 (h) mm · Interface: USB 2.0 and RS232. Match the detector active height and pixel pitch to the focal-plane dispersion before committing to a mount, then confirm wavelength calibration, scan repeatability and trigger behaviour for the acquisition you intend.
Model selection
Nearby series comparison
Compare Omni-λ3018i with the closest available models in the Imaging Monochromator family.
| Selection parameter | Omni-λ3018i (current) | Omni-λ3017i | Omni-λ3024i |
|---|---|---|---|
| Spectral range | ±0.2 nm | ±0.2 nm | ±0.2 nm |
| Resolution | 0.08 nm | 0.08 nm | 0.08 nm |
| Focal length / f-number | 320 mm | 320 mm | 320 mm |
| Grating | 68 × 68 mm | 68 × 68 mm | 68 × 68 mm |
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