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Lambda 421™ Pentagon Beam Combiner

Sutter's Lambda 421 Pentagon Beam CombinerThe Lambda 421 Pentagon Beam Combiner is an exciting newly patented concept for combining separate light sources with different spectra into a single common output beam. Each separate light source is collimated and then admitted to the optical path through a bandpass filter which also functions as a mirror that reflects the collimated beams from the other light sources.

The compact design assures an optical path length that is short and efficient. The 25mm -STR filters from Semrock are a perfect choice as they have an incredibly small form factor, are easily exchangeable, have very high pass-band transmission, and are effectively high quality mirrors outside the pass-band. Filters and associated light sources can be arranged in any order around the pentagon, so it is easy to reconfigure the system if your requirements change.

With so many diverse sources of light, (i.e. arc lamps, flash lamps, lasers and LEDs) there may not be any one source of light that provides all of the advantages that could be obtained by combining multiple light sources. In the case of microscope illumination, it is common to have devices such as movable mirrors in order to allow the user to easily switch between two light sources. This approach does not allow the light sources to be rapidly changed, and is awkward to adapt for more than 2 light sources.

The Lambda 421 Pentagon Beam Combiner is designed for flexibility and expandability. Should your illumination needs change, a simple configuration change and possibly additional filters, can produce an entirely different output. Installing a second or third pentagon on an input port allows up to 10 light sources to be combined into a single output.


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