First line: 5501a Optics Laser Heads Laser-Interferometer Positioning Systems Choose from large selection optical components system design flexibilityAbstract: .. 10567A Dual Beam Beam Splitter. Use: 50% beam splitter which allows both of the split beams to return through the splitter parallel to the incoming beam. Use-ful when it is necessary to minimize .. Tags: cube beamsplitterbeam Tube"Âoptical Pick-Up headLaser Headinterferometerinterfer*5501a*datasheet abstract..