An optical cage system uses four rigid steel rods to mount optical components along a common optical axis. Cage systems are available with center-to-center rod spacings of 16 mm, 30 mm, or 60 mm so as to accommodate Ø1/2", Ø1", or Ø2" optics, respectively. Optical Cage Systems are used to create optical setups in a variety of prototyping or university research applications. Thorlabs provides an extensive selection. Newport OpticsCage+™ offers fast, snap-in assembly for optical systems. These modules are essential for converting electrical signals into light signals and vice versa, forming the backbone of fiber. OptoSigma's CAGE Systems come in three (3) standard sizes, P16 (diameter: 4mm rods, 16mm pitch between the rods), P30 (diameter: 6mm rods, 30mm pitch between the rods) and P60 (diameter: 6mm rods, 60mm pitch between the rods).
[PDF Version]