Beam Expander

A beam expander is any optical system designed to increase the diameter of a laser beam. In most cases, the term is taken to mean a telescope designed to take a small-diameter collimated beam input beam and produce a larger diameter collimated output beam, thus reducing the divergence of the beam. The beam expander consists of a negative input lens and a positive objective. The expansion factor is the ratio of the focal length of the two lenses.

Features

Applications

Low power loss

Precision laser machining: capable to provide a high power density focal spot.

Good output collimation

Able to withstand laser power of more than 1000 W

Laser range finder: capable to provide a highly collimated beam.

Adjustable divergence angle of 18 to 32 mrad with the variable beam expanders

Combining with a spatial filter, able to modify laser power distribution.
BE Series Beam Expander for Beam Size of ≤4mm Diameter

Specifications

Part No.

Expansion ratio

Dimensions  (mm)
BE-2x

2X

Φ25*50
BE-3x

3X

Φ25*50
BE-5x

5X

Φ25*50
BE-10x

10X

Φ30*65
BEW Series Beam Expander for Beam Size of 4-10mm Diameter

Part No.

Expansion ratio

Dimensions  (mm)
BEW-2x

2X

Φ29*51
BEW-3x

3X

Φ36*74
BEW-5x

5X

Φ46*109
BEW-10x

10X

Φ86*197
Note:  These series beam expander are offered for UV, visible and infrared lasers respectively. Please let me know which wavelength you want before order.