| The 4X Beam Reducer is an imaging system that images the plane 30cm in front of the reducer onto the camera CCD sensor while reducing the size 4
times and inverting it. The beam reducer uses the 3 screw on attenuators provided with the camera. Since the intensity of a beam after reduction will be
increased by 4x4=16 times, it is advisable to attenuate the beam more than you would without beam reduction. This can be done with additional external
beam splitters and attenuators which are available (see ordering information). |
| Note that the custom designed beam reducer gives better image quality than tapered fibers since it does not introduce graininess or uneven pixel response.
Also the image distortion of ~1% is considerably lower than with most tapered fibers. The beam reducer is not compatible with CS mount cameras. |
| |
Shown is an image of an Alexandrite laser with beam diameter of
18mm. As can be seen, it is easily seen with the FX50 camera with
the 4X beam reducer. |
4X beam reducer |
 |
| LBS-100 combined
with 4X beam
reducer |
 |
| |
The 4X beam reducer can be combined with the LBS beam splitter/
attenuator system described above to attenuate higher power
beams before reducing them in size |
| |
| Specifications of 4X beam reducer |
| Spectral Range |
390nm to 1100nm |
| Antireflection Coating |
Antireflection coating optimized for 1064nm and 532nm |
| Beam reduction Accuracy |
± 3% |
| Size |
ø60 mm dia x 94mm length |
| Aperture |
50mm |
| Maximum Beam Size |
SP 503/FX50: 25x19mm, FX 33: 18x14mm, SP 620 GRAS20: 28x21.2mm |
| Distortion of Beam |
Less than 1% over 80% of diameter |
| Damage Threshold |
30mJ per pulse for nanosecond pulses |
|
| |
| Ordering Information |
| 4X Imaging Beam Reducer |
| Item |
Description |
P/N |
| 4X reimaging beam reducer |
Screw on beam reducer for beams in the wavelength region 360 - 1100nm that reimages the beam 30cm in front of
the unit onto the CCD while reducing the beam size 4X. Entrance aperture is 50mm. Fits 4.5mm recess cameras only |
SPZ17017 |
| Accessories |
| Filter holder and 50x50 filter
set for 4X beam reducer |
Filter holder with set of 4 standard Schott 50X50mm neutral density filters. Useful to further reduce intensity after
beam splitter before inputting into 4X beam reducer. Mounts to standard ¼" thread, ½" diameter laboratory rod. |
SPZ08240 |
| LBS-100 to 4X beam
reducer adapter |
This adapter enables mounting of the LBS-100 beam splitter / attenuator assembly in front of the 4X beam reducer.
The combined assembly can image large high power beams in one unit. See illustration on page154. |
SPZ17029 |
|
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