Yes, the main function of LBS-300s beam splitter is Beam profiling, however, it performs a 3-way beam splitting: less than 0.01% (1/103) of the beam is reflected in one direction, about 1% in another direction, while the remaining 99% of the incident laser beam is transmitted.
This allows users to measure one of the 3 beams, depending on available power measurement equipment and setup convenience.

LBS-300s is equipped with 2 C-Mount threads and 2 CS-Mount threads.

An input C-Mount thread is designated to connect optional Wedge Splitter () to reduce power density or beam extending negative Lenses (SP90187/88/90) to locate the focal spot in required position.

An output C-Mounts thread is mostly used to connect Ophir's Beam profiling camera. Extension tube between LBS-300s and camera can also be used to reduce noise on the camera and power density on LBS-300s adjustable ND filters.

 A 1^st and 2^nd beam out, equipped with CS-Mount 1.035-40, enables connecting Ophir Power meters such as PD300R family (7Z02436/7/8/9) or one of the beam deflectors.

The beam blocker is designated to keep one wedge surface protected during handling and shipping. It can be left attached for low power laser operations. However, in the case of high-power laser irradiation scattered light might interfere with beam profile measurement and cause offset. In case of such offset, we recommend removing the beam blocker.

After removal, an additional laser output, having less than 0.1% of incident beam power will be reflected. That beam could be used for simultaneous measurement of laser power via Ophir Power Meter in addition to beam profiler.

Regular laser safety precautions should apply. Please note, that the main incident beam will exit the LBS-300 refracted approximately 6°. Provision must be made to safely contain the transmitted beam by beam dump or power meter.