Direct-Attach Beam Splitter/Combiner

Direct-Attach Beam Splitter/Combiner
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The Beam Splitter gives you a flexible option for using dual light sources or spectrometers. The small size of the beam splitter allows it to directly mount to the front of any AvaSpec spectrometer or AvaLight lightsource, eliminating the fiber interface. Another advantage is that your existing systems can be easily upgraded to a two channel system. Being highly adaptable, the Beam Splitter enables easy measurement of two different applications at the same time (for example a fluorescence and a absorption measurement).

Examples for using the beamsplitter for Absorbance measurements using correct for drift you can find here.


Wavelength range 250-2000nm
Throughput Ca. 25%
Temperature range 0-40 C
Switching time open 15 ms
Switching time close 30 ms
Maximum frequency 10 Hz
Power supply 5VDC, 0.3A (max power 1.5W)

Fiber connection

SMA-905 connector
Material mechanical Black anodized aluminum
Material optical UV Fused silica
Dimensions (LxWxH) 44 x 34 x 63 mm *
Weight 184 grams

* Exclusive COL-UV/VIS and I/O connector

Order Info


Direct-Attach Beam Splitter / Combiner, includes IC-DB26-BEAM-0.6 (0.6 m interface cable), needs extra PS-5V / 1.1 A power supply


Interface cable (2 meters long)


Power Supply

Set ups

The Beamspliter/Combiner can be used in several set ups, combining several instruments. One possibility is to combine a Fluorescence and an Absorbance application.

By using the DA Beam combiner we can measure Absorbance and Fluorescence at the same time. The DA Beam combiner will receive both Absorbance and Fluorescence signals and can switch between these signals. 
So we see both Absorbance and Fluorescence spectra in the software, the spectrum will only be updated when the Beamcombiner is in the right position. Click here for this set up.

Set up: Absorbance and Fluorescene measurement at the same time

Set up: DA Beamsplitter/combiner for correct for drift with a flowcell

Set up: DA Beamsplitter/combiner for correct for drift with a cuvette