Firefly 4000
Firefly 4000 Compact Fibre-Optic Spectrometer
The same 3648-pixel linear CCD as the Aurora 4000 in a 170 g housing that fits in a hand. The spectral window is limited to a 650 nm span within 200–1100 nm, with 1.0 nm resolution or better.
170 g
Weight
89 × 64 × 32 mm
Footprint
< 1.0 nm
Resolution
3648 px
Linear CCD

Features
- Small and easy to carry
- Convenient plug-and-play operation over USB
- Wavelength range and resolution customised to the application
- Spectral Analysis 5.0 software included
Applications
- Laser spectral analysis
- Fluorescence spectral analysis
- LIBS spectral analysis
- Absorbance measurement
- Reflectivity and transmittance measurement
- Food and agriculture
- Chemical and biological research
- Environmental sciences
- Film-thickness measurement
Available Models
Ordering Options
Firefly GE 350-1000
General series, 350–1000 nm
Firefly GE 300-580
General series, 300–580 nm
Firefly GE 200-850
General series, 200–850 nm
Optical resolution by wavelength range and entrance aperture
Typical configurations; resolution in nm (FWHM).
| Wavelength range | 10 µm | 25 µm | 50 µm | 100 µm | 200 µm |
|---|---|---|---|---|---|
| 200–850 nm | 1.01 | 1.33 | 2.07 | 3.74 | 7.48 |
| 300–580 nm | 0.47 | 0.62 | 0.95 | 1.73 | 3.45 |
| 350–1000 nm | 1.01 | 1.33 | 2.07 | 3.74 | 7.48 |
Technical Specifications
Firefly 4000 Specifications
Detector
| Detector | Toshiba TCD1304DG linear CCD array |
|---|---|
| Wavelength range | 200–1100 nm to order, maximum 650 nm span |
| Pixels | 3648 |
| Pixel size | 8 µm × 200 µm |
Spectrometer
| Optical resolution | < 1.0 nm |
|---|---|
| Signal-to-noise ratio | 300:1 at full signal |
| Dynamic range | 2 × 10⁹ (system) |
| Integration time | 4 ms – 10 s |
| Dimensions | 89 × 63.9 × 36.2 mm (spec table); drawing shows 89 × 64.3 × 32.2 mm |
| Weight | 170 g |
Electronics
| Power consumption | 450 mA at 5 V DC |
|---|---|
| Data transfer | Full scan into memory every 4 ms over USB 2.0 (every 18 ms over USB 1.1) |
| Connector | 30-pin connector |
| Strobe functions | Yes |
Final specifications depend on the configured wavelength range, entrance aperture and grating. We confirm the configuration before quotation.
Figures
Drawings, Photos and Measured Data

Datasheets
Full specification sheets for the Firefly 4000.
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