Lunch Chat: The Autostigmatic Microscope: A useful but unappreciated optical metrology instrument

Tue, 05.09.2023, online


We are pleased to announce and invite you to one of our weekly online zoom events.

The Autostigmatic Microscope: A useful but unappreciated optical metrology instrument

A description of an autostigmatic microscope (ASM) was first reported in the English literature in 1900, and a version of it is found in most optical shops from before that time for measuring the radii of test plates. The ASM was not used for much else because of practical considerations mostly relating to an insufficiently bright light source, a situation profoundly changed by the advent of the laser.

I will describe a contemporary version of an ASM and explain why it is useful in many other optical metrology applications due to a laser source, digital camera, a change in microscope objective design and specialized software. These technologies allow several classical optical instruments to be combined into one small, lightweight package. I will explain how each of the new technologies aided in the ASM design changes and illustrate some of the new metrology applications of the instrument. Finally, I will touch briefly on the use of Bessel beams and the ASM for optical alignment.


Prof. Robert E. Parks, CEO Optical Perspectives Group
Robert E. (Bob) Parks received a BA and MA in physics from Ohio Wesleyan University and Williams College, respectively. He then worked as an optical engineer at Eastman Kodak Company and Itek Corporation prior to gaining optical fabrication experience at Frank Cooke, Inc. In 1976, he went to the Optical Sciences Center at the University of Arizona as manager of the optical shop. Subsequently he was promoted to assistant research professor. In 1992 he started Optical Perspectives Group, LLC along with Wm. P. Kuhn. Currently, he continues to operate OPG as sole proprietor. 


Dr. Christian Bosshard, Managing director Swissphotonics
Dr. Christian Bosshard received his degree in Physics (1986) and his doctorate (1991, Silver medal award) from ETH. From 2001-2021 he was working at CSEM, first as Section Head and then as Vice President and Head Photonics. Since 2013 he is Managing Director of Swissphotonics. Christian is a Fellow of Optica, Board Member of EPIC, and Member of the Board of the University of Basel.

Tuesday, 5 September 2023

12:00 - 12:45


free of charge

Registration only necessary once
This event series requires registration (see link above). We will send you the access information (Zoom-link and ID) by email after the registration. As the Zoom link remains the same every week, you do not need to register again for the following meetings.

Prof. Robert E. Parks
CEO Optical Perspectives Group

Contact Swissphotonics
Dr. Christian Bosshard
Managing Director Swissphotonics
+61 455 957 792

25 June 2023, Christian Bosshard
Swissphotonics, Verein Schweizer Laser und Photonik Netz VSLP | Sihleggstrasse 23 | CH-8832 Wollerau | E-Mail | |