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Omni-λ180i | Omni-λ320i | Omni-λ500i | Omni-λ750i | |
focal length (mm) | 180 | 320 | 500 | 750 |
Relative aperture | f/4 | f/4 | f/6.5 | f/9.7 |
Optical structure | C-T | |||
Mechanical scanning range (nm) | 0-1200 | |||
resolution(nm) | 0.25 | 0.08 | 0.05 | 0.028 |
Line dispersion (nm/mm) |
3.7 | 2.3 | 1.7 | 1.1 |
Wavelength accuracy (nm) | ±0.2 | ±0.15 | ±0.1 | |
Wavelength repeatability (nm) | ±0.1 | ±0.08 | ±0.01 | |
Scanning step distance (nm) | 0.01 | 0.005 | 0.0025 | |
stray light | 1×10-5 | |||
Focal plane size (mm) | 30(w)×10(h) | 30(w)×14(h) | ||
Height of optical axis (mm) | 146.5 | |||
Slit size | Seam width: 0.01-3mm continuous manual adjustable, optional automatic slit;Seam height: 2, 4, 10, 14mm optional | |||
Grating size (mm) | 40×40 | 68×68 | ||
Grating stage | Double grating | Three grating | ||
communication interface | standard USB2.0, optional RS-232 |