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Beam Splitters
Dielectric beam splitters
Dielectric beam splitters are used to separate light specifically into reflected and transmitted radiation components
Dielectric beam splitters serve the purpose of separating light into its reflected and transmitted components. They are utilised when light of a particular wavelength or spectral range requires division into a reflected (R) and a transmitted (T) component, with one part being transmitted while the other is reflected. Additionally, beam splitters can merge two distinct beams into a single beam.
Utilising our thermally stable dielectric layers, we can produce beam splitters with custom splitting ratios, typically 50% / 50% (reflection/transmission) or even 30% / 70% (R/T). Due to this precise production with defined splitting ratios, beam splitters are also called “splitter mirrors”. Due to their dielectric layer structure, dichroic beam splitters are sometimes also referred to as dielectric beam splitters.
We offer specialised expertise in designing and manufacturing beam splitter coatings tailored to meet the specific requirements of your application.
![[Translate to English:] Prinzipkurve Dielektrische Strahlteiler](/fileadmin/bte/Inhaltsbilder/Prinzipkurven/BTE_Web_Prinzipkurven_gepfadet_LY2_DielektrischeStrahlteiler.svg "[Translate to English:] Prinzipkurve Dielektrische Strahlteiler")
Neutral beam splitters
Neutral beam splitters separate light radiation without changing the spectral distribution
Neutral beam splitters divide light radiation without altering its spectral distribution, resulting for example in a semi-transparent mirror. This type of mirror finds application in optical measurement technology to produce two corresponding signals or images at distinct locations. Additionally, neutral beam splitters are utilised in projection technology. The spectral range for neutral beam splitters can be tailored to specific requirements. While the range between 450 nm and 650 nm is common, beam splitters for the UV and IR ranges can also be manufactured. Typically, the splitter is positioned at a 45° angle to the incident beam, although this configuration is not mandatory. We possess the capability to adjust the splitting ratio as needed, providing flexibility to meet diverse application demands.
![[Translate to English:] Prinzipkurve Neutraler Strahlteiler](/fileadmin/bte/Inhaltsbilder/Prinzipkurven/BTE_Web_Prinzipkurven_gepfadet_LY2_NeutralerStrahlteiler.svg "[Translate to English:] Prinzipkurve Neutraler Strahlteiler")
FAQ: Frequently asked questions about beam splitters
A beam splitter is an optical element that divides light into a reflected and a transmitted part. Alternatively, it can also bundle two light beams into one.
Dichroic beam splitters separate light specifically according to wavelengths or spectral ranges. They consist of dielectric layers and are also known as dielectric beam splitters.
A neutral beam splitter separates light radiation without changing the spectral distribution. For example, it produces semi-transparent mirrors for applications in measurement technology or projection.
Typical division ratios are 50%/50% or 30%/70% (reflection/transmission), but can be individually adjusted.
The spectral range can be selected flexibly. It is often between 450 nm and 650 nm, but UV and IR ranges are also possible.
Beam splitters are usually used at a 45° angle to the incident light, but this is not mandatory.
Typical substrates are glass types such as Borofloat, B270, float glass and plastics such as Zeonex, PC and PMMA with hard coating.
In fluorescence spectroscopy and microscopy, measurement and sensor technology as well as in image processing and automation technology.
In light and laser applications, optical metrology and also in image processing.
Splitter mirrors are beam splitters with a defined split ratio that reflect and transmit light in a targeted manner – often used synonymously with dichroic beam splitters.
