Diffractive beam splitters (Multispots) can be used for effective coupling of light from a laser
into fiber bundles.
Use of Multispots can uniformly distribute energy into channels of a fiber bundle,
improving the coupling efficiency. HOLO/OR released new Multispot designs
in hexagonal of 7, 19, and 37 spots.
A typical optical setup would include a Multispot and a lens, as in the below figure:
You can find our standard elements on the 2D beamsplitter products page
with the remark "hexagonal".