There's something you should know about Labrum Optical Engineering: It isn't just another engineering firm.  If you are looking for the out-of-the-ordinary optical engineering services and/or out-of-the-ordinary optomechanical engineering services, Look to Labrum.

The animated optical system you are viewing is diffraction limited, (theoretically perfect) and combines the functions of a 2.5X Laser Beam Expander, and a beam steering device (articulated optical hinge).

The hinge operates over a +/- 4.0 degree range and can be tilted in any direction. A 1º tilt in the optical train causes a 1º change in the beam pointing direction. Normally it is easier to build separate laser beam expanding optics and separate beam steering optics and assemble them one after the other. However, this particular application was very space limited and it was necessary to devise a way to combine both beam expansion and beam steering into one short optical train.