For applications where the exact expansion ratio required is not
known, Special Optics offers both manual and motorized zoom beam
expanders. Our proprietary diffraction limited 5-element design,
allows for continuous expansion selection from 2X to 8X. Fused
silica lenses are used on the two input groups to allow for high
damage thresholds. Both expansion ration and focus can be controlled
independently so that diffraction limited performance can be maintained
at any single wavelength from 488-1300 nm.
Special Optics Variable Zoom Beam Expanders are ideal to compensate
for varying optical path lengths. They allow you to match the
beam diameter of the laser to the aperture of the optical system. They
typically employ a proprietary 5 lens-element design with 3 lens
groups to reduce the internal focus. Also, we use fused silica
lenses on the two input groups. As a result, our zoom beam
expanders tolerate a very high damage threshold.
With Special Optics zoom laser beam expanders, variable magnification
levels can easily be set ranging from 2X-8X, 2X-10X, 1X-4X, and
1X-5X. This variability makes Special Optics Beam Expanders
ideal for easier set ups on OEM machines, provides flexibility
to equipment and are ideal for general laboratory research.
Choose from VIS, IR, or UV variable
beam expanders.
VIS Variable Beam Expanders
Specifications:
Features
Wavefront Distortion
< 1/4 Wave
Diffraction-limited design
5 element design reduces internal focus
Continuous zoom and focus adjustments
Mechanicals specifically designed to minimize beam wander
Reduce machine setup times
Transmission
> 95%
Coating Damage Threshold
100 MW/cm2
Useable Spectral Range
450-1100 nm
Available VIS Variable Beam Expander Lenses
Model
Expansion Range
Max. Input Aperture (mm)
Max. Output Aperture (mm)
O.D.
(mm)
Max. length (mm)
Mechanical
Drawing
Price
56-30-2-8X-λ
2-8X
10.0
30.0
37.6
167
$ 1,450
56-45-2-8X-λ
2-8X
10.0
45.0
66.7
163
$ 2,930
Please replace λ in
model number with working wavelength when ordering.
IR Variable Beam Expanders
Features
Adjustable Lens Spacing
Low Insertion
Loss
Zinc Selenide Lens Elements
Model
Expansion Ratio
Input Aperture (mm)
Output Aperture (mm)
Dimensions O.D. x Length (mm)
Wavelength
Range (microns)
Mechanical Drawing
Price
53-26-2-10X-λ
2-10X
10
26.5
48.0 x 180
9.3 or 10.6
$ 2,450
Please replace λ in
model number with working wavelength when ordering.
UV Variable Beam Expanders
Specifications:
Features
Wavefront Distortion
< 1/4 Wave
Compatible to Standard
Computer Controlled Actuators
Minimal Internal Focus for High Power Use Large Input and Output Apertures
Achromatic
For applications where the exact expansion ratio required is not
known, Special Optics offers both manual and motorized zoom beam
expanders. Our proprietary diffraction limited 5-element design,
allows for continuous expansion selection from 2X to 8X. Fused
silica lenses are used on the two input groups to allow for high
damage thresholds. Both expansion ration and focus can be controlled
independently so that diffraction limited performance can be maintained
at any single wavelength from 488-1300 nm.