As reflective beam collimators can be used to replicate a target at infinity or interim distances without parallax, they are the device of choice for performing MTF measurements. However, to test ...

One of the fascinating phenomena associated with photonic crystals is self-collimation, where light beams can travel without spreading out. This property is particularly useful in applications ...

Optical Surfaces Ltd has developed a new approach, using a series of pre-aligned beam collimator sub-assemblies, for Modulation Transfer Function (MTF) testing of large diameter military optical ...