PSM Application Notes
ABSTRACT: An autostigmatic microscope is a perfect way of aligning an autocollimating flat mirror to a parabola. This notes descibes the simple two step process of positioning the PSM objective focus coincident with the focus of the parabola.
ABSTRACT: It is sometimes necessary to align a series of optical elements, lenses and mirrors, to a single, straight optical axis. This note describes a method using an autostigmatic microscope (ASM) where the ASM is moved along a straight line relative to the axis of the bench in which the elelemts are mounted so the centers of curvature of the elements can be adjusted to lie on the line or axis of the system.
ABSTRACT: The most common use of the Point Source Microscope (PSM), or any autostigmatic microscope, is the precision measurement of the radius of curvature of spherical surfaces. This note describes the procedure for doing so and defines confocal and Cat's eye focus.
ABSTRACT: One of the easier measurements to make with the Point Source Microscope (PSM) is determining the wedge in a nominally plane, parallel window by removing the PSM microscope objective and using the PSM as an autocollimator to view the wedge between the surfaces.
ABSTRACT: This relatively recent (1983) paper by W. H. Steel of CSIRO is the only paper found in the archival literature to describe an autostigmatic microscope (ASM) and its most common use, the measurement of radii of curvature, in this case, the radii of contact lenses. The Point Source Microscope (PSM) is a modern version of this classical instrument.
ABSTRACT: As opposed to a bright field, reflecting microscope that produces an image of a microscopic object, a point source, or autostigmatic, microscope uses pinhole illumination to produce a diffration limited spot at the objective focus and that spot diverges as a nearly perfect spherical wavefront. This note describes many useful applications of the Point Source Microscope (PSM), a modern version of the classic autostigmatic microscope, that also includes a bright field imaging option and is useful as an autocollimator.