Optical Perspectives Group, LLC is an optical engineering consulting firm specializing in the hardware aspects of optics, particularly the fabrication, testing, assembly and alignment of optical components and systems.

As an outgrowth of its consulting work, OPG markets two products; the Point Source Microscope (PSM) used in the alignment of optical systems, and the CaliBall™, used for calibrating interferometer transmission spheres.

OPG has a library of technical papers about optical fabrication, testing and alignment including aspheres and off-axis systems. To view abstracts and download pdf's of the papers, please Register as a user on the left.