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BEX-series beam expanders for laser material processing applications

Whether manually or variably adjustable or motorized, the beam expanders of the BEX product families are robust, flexible and durable.

Whether for production or the laboratory, Jenoptik offers beam expanders of a variety of wavelengths for a precise and reliable beam guidance system. Our beam expanders are optimized for the precision requirements of laser material processing and offer fitting solutions for a wide variety of applications. In addition to the variable, manually adjustable beam expanders of the BEX family, we also offer a motorized version, the BEX-M, and a fixed magnification version, the Fix-BEX beam expander.

Product overview

Beam stability

Divergence of the laser beam is reduced thanks to its flexible focus

Robust and durable

No rotation of the lens elements during a setup change

High precision

Powerful optical design without internal reflections for precise laser beam output

Reversible

Can both enlarge and reduce the size of the laser beam

Process reliability

High standards for procedures, processes and certifications

Diffraction-limited

Diameter of laser beam limited only by diffraction of light

Discover our Fix-BEX fixed magnification beam expanders

For reliable and powerful performance in demanding laser applications
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Fix-BEX beam expander with fixed magnification

Fix-BEX beam expander 355 nm (UV)

High-power and ultrashort pulse systems

This beam expander is designed for a wavelength of 355 nm and offers a large input aperture of up to 8 mm (1/e2). It offers clear and stable laser power and can be used with a 1.5x, 2x, 4x or 8x expansion factor at high powers. The high-precision optical design ensures diffraction-limited imaging and prevents internal foci. It also comes with a divergence setting as standard. The housing is made of stainless steel for maximum resistance and durability, and the optical elements are made of robust quartz glass with AR coating. For use in its reverse mode, the beam expander is threaded on both sides.

Fix-BEX Beam expander 515...540 nm (GR)

High-power and ultrashort pulse systems

The Fix-BEX 515...540 nm demonstrates its advantages for applications in the FIS sector. It has excellent directional stability and thus consistently offers high beam quality. Like all other versions, it offers a large input aperture of up to 8 mm (1/e2) and diffraction-limited imaging. Internal foci are prevented thanks to the sophisticated high-precision optic design. The divergence of the laser beam can also be adjusted. The optical elements are made of robust quartz glass with AR coating. In addition, the Fix-BEX can be used in reverse mode, as the beam expander is threaded on both sides.

Fix-BEX Beam expander 1030...1080 nm (IR)

High-power and ultrashort pulse systems

This reliable and powerful beam expander is ideal for both standard and high-performance applications. The Fix-BEX 1030–1080 nm comes out on top with its large input aperture of up to 8 mm (1/e2). The lenses are designed in such a way that light diffraction is limited so that image quality is achieved over the entire magnification range. This also prevents the occurrence of unwanted internal foci. It also comes with a divergence setting as standard. The housing is made of stainless steel for maximum resistance and durability, and the optical elements are made of robust quartz glass with AR coating. For use in the reverse mode, the beam expander is threaded on both sides.

BEX variable beam expander with manually adjustable magnification

The BEX beam expanders offer more flexibility for diverse applications
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Variable BEX beam expanders with manually adjustable magnification for maximum flexibility

Our adjustable beam expanders meet high precision requirements for laser material processing. All versions are available in wavelengths of 355 nm, 515...540 nm and 1030...1080 nm.

BEX 1x-4x

BEX 1x-4x beam expander
  • Compact length
  • Quartz glass system
  • High beam stability
  • High image quality
  • Expansion factor is seamlessly adjustable from 1x to 4x

BEX 1x-4x steadfast

Beam Expander 1x4x steadfast
  • Innovative mechanical design for stable linear guidance of moving optical elements
  • Quartz glass system
  • High beam stability
  • High image quality
  • Adjustment set available
  • Expansion factor is seamlessly adjustable from1x to 4x BEX 2x-10x

BEX 2x-10x

Beam Expander 2x-10x
  • Extra-large zoom range
  • High beam stability
  • Quartz glass system
  • High image quality
  • Expansion factor is seamlessly adjustable from 2x to 10x

BEX 1x-8x

Beam Expander 1x-8x
  • Specially designed for high-power applications
  • High beam stability
  • High image quality
  • Adjustment set available
  • Expansion factor is seamlessly adjustable from 1x to 8x
Beam Expander product group

Variable beam expander 1x-4x full quartz system

The BEX 1x-4x variable beam expanders for the wavelengths 355 nm, 532 nm and 1030...1080 nm provide a high image quality with their compact lengths. All versions are infinitely adjustable between a 1x and 4x expansion factor. The larger the expanded beam, the smaller that structures can be created with the paired F-Theta objective.

A focus ring allows the divergence of laser beams to be changed in a targeted manner, thus compensating for the focal length tolerances in the overall system. This also makes it possible to change the position of the working plane according to the scanning system.

Technical data and downloads
Wavelength1030...1080 nm515...540 nm355 nm
Order No.017052-012-26017052-202-26017052-402-26
Data sheet (pdf) - one for allBEX 1x-4x.pdfBEX 1x-4x.pdfBEX 1x-4x.pdf
STEP-data (stp) - one for allBEX 1x-4x 1x.stpBEX 1x-4x 4x.stpBEX 1x-4x 1x.stpBEX 1x-4x 4x.stpBEX 1x-4x 1x.stpBEX 1x-4x 4x.stp
Zemax-Blackbox (zip)BEX 1x-4x 012-26.zipBEX 1x-4x 202-26.zipBEX 1x-4x 402-26.zip

Beam Expander 1x4x steadfast

Variable beam expander 1x-4x steadfast

The BEX 1x-4x steadfast beam expanders are characterized by a mechanical design that guides the movable optical elements in a stable, linear manner. This reduces the influence of mechanical manufacturing irregularities and increases beam stability whenever changing magnification and/or divergence. This ensures a beam direction stability of less than one milliradian.

Settings can also be conveniently locked. Therefore, influences such as vibrations or system accelerations system are minimized. In addition, the BEX 1x-4x Steadfast stands for easy maintenance and minimal set-up times.

Technical data and downloads
Wavelength1030...1080 nm515...540 nm355 nm
Order No.582823593355593354
Data sheet (pdf) - one for allBEX 1x-4xsteadfast.pdfBEX 1x-4xsteadfast.pdfBEX 1x-4xsteadfast.pdf
STEP-data (stp) -both for allBEX 1x-4x 1x.stpBEX 1x-4x 4x.stpBEX 1x-4x 1x.stpBEX 1x-4x 4x.stpBEX 1x-4x 1x.stpBEX 1x-4x 4x.stp
Zemax-Blackbox (zip)BEX 582823.zipBEX 593355.zipBEX 593354.zip


Beam Expander 2x-10x

Variable beam expander 2x-10x

The BEX 2x-10x variable beam expanders for the wavelengths of 355 nm, 532 nm and 1030...1080 nm have a particularly large zoom range. All versions have an infinitely adjustable zoom factor between 2x and 10x.

These beam expanders are specifically designed for applications where widened beam diameters are required. The larger the expanded beam, the smaller the structures can be produced with a paired F-Theta objective lens.

Technical data and downloads
Wavelength1030...1080 nm515...540 nm355 nm
Order No.017052-001-26107052-201-26017052-401-26
Data sheet (pdf) - one for allBEX 2x-10x.pdfBEX 2x-10x.pdfBEX 2x-10x.pdf
STEP-data(stp) -one for allBEX 2x-10x 2x.stpBEX 2x-10x 10x.stp
BEX 2x-10x 2x.stp BEX 2x-10x 10x.stpBEX 2x-10x 2x.stp BEX 2x-10x 10x.stp
Zemax-Blackbox (zip)BEX 2x-10x 001-26.zipBEX 2x-10x 201-26.zipBEX 2x-10x 401-26.zip


Beam Expander 1x-8x

Variable beam expander 1x-8x

The 1x-8x beam expanders are part of the SilverlineTM high-power lens series and are designed in such a way that a diffraction-limited image quality is achieved over the entire magnification range.

Optimized coatings ensure the highest transmission and lowest thermal influences. To ensure durability and a high destruction threshold in high-power laser applications, we use full quartz as the lens material.

Technical data and downloads
Wavelength1030...1080 nm515...540 nm355 nm
Order No.606997627443586117
Data sheet (pdf) - one for allBEX 1x-8x|1064nm.pdfBEX 1x-8x|532.nm.pdfBEX 1x-8X|355nm.pdf
STEP-data (stp) - one for allBEX 1x-8x 1x.stpBEX 1x-8x 8x.stpBEX 1x-8x 1x.stpBEX 1x-8x 8x.stpBEX 1x-8x 1x.stpBEX 1x-8x 8x.stp
Zemax-Blackbox (zip)BEX 1x-8x 606997.zipBEX 1x-8x 627443.zipBEX 1x-8x 586117.zip

Set the zoom factor using remote, software control 

At the touch of a button, the BEX-M series of motorized beam expanders offer high-power, quality and ease of use.
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Variable beam expander BEX-M1x-8x – with motorized adjustable zoom

BEX-M-1x-8x

Motorized beam expander 1x-8x simplifies production steps in laser material processing

With the motorized beam expander 1x-8x, Jenoptik helps you adapt to market requirements by optimizing and balancing the critical parameters of time, quality and ease of use. Consequentially, the motorized beam expander is a perfect match for the F-Theta lenses of Jenoptik’s SilverlineTM series and can be used in a variety of beam guidance systems.

Thanks to corresponding software interfaces, the motorized beam expander can be easily integrated into any system for laser material processing.

  • Seamless adjustment of the zoom factor from 1x to 8x via software command
  • Targeted adjustment of the divergence of the laser beam for tolerance compensation throughout the entire system
  • Excellent beam stability for continual high quality
  • Integrated software features reduce set-up times for production efficiency

Further information on accessories is available on request.

A look into the practice

Click here for the user report: "Integrable Solutions for the Growth Market of Digital Laser Material Processing."

Learn more

Adjustment set for beam expander integration

Alignment Set for Beam Expander Integration

With the adjustment set from Jenoptik, optical beam expanders can be integrated even more easily in the laser beam path, both during initial commissioning and during ongoing operation. The innovative clamping device can be used seamlessly, with 4 mm adjustment travel and standardised screw connection. As a result, the optical components can be adjusted to each other more quickly yet with high precision. The system can be freely adjusted in 4 different degrees as well as in X and Y direction.

The adjustment set complements the following Jenoptik beam expander types:

  • Beam expander BEX 1x-4x steadfast
  • Beam expander BEX 1x-8x
  • BEX-M motorized beam expander

Machine integrators, contract manufacturers and laboratories benefit from the simple combining of optical components in their laser systems and faster commissioning.

Contact for Optics and Optical Systems

Ina Rocktäschel

Account Specialist

+49 3641 65-3234

+49 3641 65-3764

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