CASTECH provides the beam expander can be classified into two categories: adjustable divergence angle and non-adjustable divergence angle. The product has a variety of magnification and outside diameter, easy to install and integrate and can satisfy various demands of our customers. The parameters can be customized according to customer requirements.
Beamexpander is an optical device which used to increase the diameter of collimatedinput beam to larger collimated output beam. The Beam expander primarilyapplied in such Laser scanning, laser cutting, interferometry, and remotesensing. Usually, the beam expander consists of a negative and a positive lens.
CASTECH provides the beam expander can be classified into two categories:adjustable divergence angle and non-adjustable divergence angle. The producthas a variety of magnification and outside diameter, easy to install andintegrate and can satisfy various demands of our customers. Theparameters can be customized according to customer requirements.
Adjustable divergence angle
Not adjustable divergence angle
Divergence angle can be adjusted to minimum
Simple structure and low cost
Complex structure and high cost
The divergence angle can not be fine-tuned to achieve the best effect.
◆ Laser Scanning
◆ Short Pulse Laser
◆ Ultrashort Pulse Laser
Laser Beam Expander
Clear Input Aperture(mm)
12, 8, 8
Clear Output Aperture (mm)
26, 26, 20
Max. Input Beam Diameter(mm)
10, 6, 4
6, 4, 4, 3, 3
M22×0.75 or M30×1
5J/cm², at 355 nm, 5 ns, 10 Hz
*Customized (wavelength, dimension,efl,etc.) are available.
*CASTECHprovides the Product specification for specific models, please contact ourcompany for more details.
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