ABSTRACT: The concept of centering a precision, symmetric lens system using a high-quality rotary table and an auto-focusing test instrument are well known. Less well known are methods of finding convenient, or easily accessible, lens conjugates on which to focus while performing the centering operation. We introduce methods of finding suitable conjugates and centering configurations that lend themselves to practical centering solutions.
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.
"We are enjoying our Point Source Microscope and finding it invaluable in alignment and diagnostic tasks."
Dr. John Mitchell Senior Optical Metrologist Glyndwr Innovations Ltd., St. Asaph, Wales, UK
"Just wanted to share a recent success aligning an adaptive optics test bed with the PSM. We used to use a traditional alignment telescope in the past, but the PSM made the whole process really easy and fast. The main requirements were to quickly determine the quality of beam collimation and pupil conjugates since there are several beam expanders and compressors with multiple pupil and focal planes."
Suresh Sivanandam Dunlap Institute for Astronomy and Astrophysics University of Toronto
"You are always responsive and give us lots of useful information!!"
Dr. Shaojie Chen Dunlap Institute for Astronomy and Astrophysics University of Toronto
"As always we are very much loving the instrument, I personally love the camera upgrade from what I'm used to!"