Overview of Illuminator
The illuminator is a convenient source of radiation in the wavelength range from 230 nm to 850 nm. The light is generated by a xenon arc lamp and the wavelength is selected by a single-grating monochromator with a grating blazed in the UV. At the exit of the monochromator the light is collected by a 180 mm-long fiber bundle covering the rectangular shape of the slit to maximize the light collection. The delivery end features a round aperture; a telescopic lens is positioned at the exit of the fiber for allowing the control of the parallelism and size of the illumination beam.
The components are conveniently mounted on a baseplate for easy positioning and transportation in the laboratory space. The wavelength is selected by manually moving the rotating dial on the monochromator.
Alternatively, the monochromator can be controlled through the computer by using a Motor Controller unit and the Vinci software; the wavelength can then be selected through the computer.
Product Specifications for Illuminator
Xenon Arc Lamp
Wavelength Range (nm)
- Model LX300F: 350 - 1000
- Model LX300UV: 230 - 1000
Nominal Operating Power (W)
- 300
Operating Power Range (W)
- 180 - 320
Operating Current Range (A dc)
- 10 - 22
Nominal Operating Voltage (V dc)
- 14
Operating Voltage Range (V dc)
- 13 - 16
Ignition Voltage (kV)
- 23
Beam Geometry - Half Angle at 0/100/1000 hrs. (degrees)
- 5/6/7
Reflector Coating
- Model LX300F: Silver with UV reflective coating
Model LX300UV: Aluminum without UV reflective coating
Weight (kg)
- 0.26
Radiant Beam Characteristics (nominal values)
| Model | LX300F | LX300UV |
|---|---|---|
| Peak Intensity (candelas) | 515 x 103 | 460 x 103 |
| Radiant Output (W) | 50 | 50 |
| UV Output* | 2.6 | 6.6 |
| Visible Output (lumens)** | 5,000 | 4,500 |
| IR Output (W)*** | 28.8 | 26.8 |
*UV at 390 nm
**VIS 390 - 770 nm
***IR > 770 nm
Spectral distribution for the 300 W xenon arc lamp for LX300UV
Monochromator
Aperture Ration
- f / 3.5
Focal Length (mm)
- 100
Grating Size (mm)
- 32 x 32
Blazing Wavelength (nm)
- Excitation: 250
Linear Dispersion with 1,200 lines/mm (nm/mm)
- 8
Resolution with 0.1 mm slits, 1,200 lines/mm (nm/mm)
- 1.0
Wavelength Accuracy (nm)
- ±1.0
Reproducibility
- ±0.25
Stray Light (Measured at 8 Bandpasses Outside the 632.8 nm line)
- 10-5
Transmission Curve
Transmission curve for a holographic, 1200 lines/mm grating, blazed at 450 nm.
Fiber Bundle
Fiber Core Diameter
- 200 µm (total diameter of the fiber to be about 3 mm)
Fiber Type
- Silica Core/Silica Clad
Operating Wavelength Range
- 240 - 1,200 nm
Fiber Numerical Aperture
- 0.22
Output Leg Termination
- Round ferrule (10 mm x 25 mm long); 10 mm external diameter
Input Leg Termination
- Rectangular ferrule (14 mm max external diameter) with fibers arranged in a rectangular aperture 1.5 mm (W) x 10.5 mm (H)
Total Length of Assembly
- 1.8 m
Sheathing
- Standard Cabling
Material
| Fiber material | Glass | High Grade Fused Silica |
|---|---|---|
| Wavelength range (nm) | 390 – 1,200 | 240 – 1,200 |
| Numerical Aperture (NA) | 0.22 | 0.56 |
| F/# | 2.3 | 0.9 |
| Acceptance cone, 2a | 25° | 68° |
