Spatial Filter, Compact, Five-Axis, XY θxθy 100TPI, Z 80TPI

Spatial filters allow the user to remove random fluctuations from the laser beam’s intensity profile, significantly improving an optical system’s resolution. This laser beam cleanup is especially important for applications such as holography and optical data processing. To produce this clean Gaussian beam, a spatial filter removes the unwanted multiple-order energy peaks, while passing only the central maximum of the diffraction pattern. A spatial filter will remove any additional spatial noise from an optical system, including scattered light in the beam profile caused by dust particles on or around the objective. The spatial filter assembly is made up of the microscope objective, a pinhole aperture and a positioning mechanism.

It's easy to change mounted pinholes, which simply thread into the body of the spatial filter. RMS-threaded objective lenses attach to the lens holder, which is then clamped to the positioner. The video shows how to install an M- Series objective lens and 910PH Series mounted pinhole assembly into the 910A. The lens holder has an integral iris diaphragm to aid in coarse alignment of the beam to the spatial filter and for blocking out stray light. Objective lenses and pinholes must be selected and purchased separately. These spatial filters are designed to accommodate select Microscope Objective Lenses models (RMS thread and slim body to fit into 910A's brass cylinder), and all 910PH Series High-Energy Pinhole Apertures.