Request for Quotation
Our DST beamsplitters divide an incident light beam into a transmission and a reflection component. The incident light or an image is partially reflected as through an optical mirror and partially transmitted as through an optical window. The input surface of our beam splitter plates is coated with a very thin dielectric coating, which determines the splitting ratio. On the rear side, the DST beamsplitters have a broadband anti-reflection coating which almost wholly eliminates secondary reflections, so-called ghost images or phantom laser beams. Losses due to reflections on the rear glass surface can thus almost not occur.
Unlike dichroic beamsplitters, such as our SIR filters or SHD mirrors, DST optical splitter mirrors do not work like dichroic optics. They do not separate different light spectra from each other but divide the incident light rays in the visible range in a largely color-neutral way. A non-metallic construction of our beamsplitters ensures excellent durability and abrasion resistance. Besides, the dielectric layer system of the splitter mirrors has very low absorption in the nominal wavelength range. In contrast to metallic beamsplitter plates, very little light is absorbed. Hence, DST-beam splitter plates can also be used as beam splitters for lasers. In this application, a part of the laser beam is mirrored by 45°, while the rest of the beam is transmitted at 0° (see picture below). This function is often required in optical benches and reference measurement systems.
All DST beamsplitters are designed for light without defined polarization, i.e. unpolarized light. When using DST splitter mirrors with polarized light sources or with a polarized laser, the optical splitting ratios may therefore deviate from the specifications given here, as these are given in this data sheet exclusively for randomly polarized light. The DST beamsplitters are undefined in terms of polarization or polarization effects. However, this does not generally exclude an application with polarized light sources. Often the desired gradation can be achieved by selecting a higher or lower, already existing ratio and the costs can be drastically reduced compared to a customer-specific coating batch. If you need a beam splitter plate for polarized light or a polarized laser, please contact us with information on wavelength, splitting ratio and all relevant details for your application. In case of special requirements regarding polarization properties, we can usually also manufacture polarization-optimized, customer-specific divider optics with sufficient production quantities.
In addition to our standard beamsplitters, the DST300, DST500, and DST700 series, we can also coat splitting ratios according to customer specifications. Also feasible on a batch basis are polarizing beam splitter cubes, beamsplitter pentaprisms, NIR splitter mirrors, and high-performance beamsplitters. Design and production of polarizing beam splitter cubes, as well as polarization direction maintaining splitter optics, can also be realized. Such beamsplitter components are always customized and are therefore not listed in detail on our website. Please use our inquiry form to request customized beamsplitter optics, technical assistance, and further information.
You will not find any shopping cart on our website, because we are not limited to standard items with fixed dimensions. We are specialized in manufacturing and delivering our DST dividers with customized sizes very quickly. Therefore, we often ship tailor-made beamsplitters just as fast or even faster than standard stock items. Moreover, this also applies to large production quantities! As a rule, you will receive our quotation within a few minutes, provided you are in our time zone and there are no queries.
To request a quote for one of our DST beamsplitters with individual dimensions, please click on the button below:
(All specifications are given for an incidence angle of i = 45° and random polarization)
© 1994-2019 Präzisions Glas & Optik GmbH