Beam splitting filters
Beam splitting filters are semi-transmitting mirrors that combine light of two or more wavelengths into the same optical path. In a beam splitting arrangement, part of the light is transmitted and part is reflected, so that two beams can be brought together or one beam can be divided for different uses. The documented category description presents the beam mirror as a semi-transmitting mirror that combines two or more wavelengths into one path. This page describes that category and the inquiry checklist. It does not publish a splitting ratio table, a wavelength table, or an angle table for this line, because no deep specification page has been documented for beam splitting filters.
Reading the illustration on this page
The illustration on this page is a transmission spectrum curve illustration. It shows the general form of a transmission curve, with transmission on one axis and wavelength on the other, and it is not a photograph of a beam splitting product. It is included so that buyers can recognise the form of curve that is usually discussed when a beam splitting requirement is described. It does not state a value for any beam splitting product, and it must not be read as a specification for this line.
What to confirm in your inquiry
Please confirm the following items in your inquiry before ordering: the wavelengths you need to combine or split; the transmission and reflection behaviour you need at those wavelengths; the angle at which the element will be used; the size and shape you need; the substrate material if it matters; and the quantity basis and delivery basis for your order. For the wider filter family, see interference filters and optical filter types. For selection concepts, see the interference filter guide.