• Home
  • Tags: autocollimating

Articles tagged with: autocollimating

10 March 2016

Swing Arm Optical Coordinate-Measuring Machine: High Precision Ground Aspheric Surfaces using a Laser Triangulation Probe

Written by Yuhao Wang, Peng Su, Robert E. Parks, Chang Jin Oh, James H. Burge, Posted in Optical Testing

Abstract

The swing arm optical coordinate-measuring machine (SOC), a profilometer with a distance measuring interferometric sensor for in situ measurement of the topography of aspheric surfaces, has shown a precision rivaling the full aperture interferometric test. To further increase optical manufacturing efficiency, we enhance the SOC with an optical laser triangulation sensor for measuring test surfaces in their ground state before polishing. The calibrated sensor has good linearity and is insensitive to the angular variations of the surfaces under testing. Sensor working parameters such as sensor tip location, projection beam angle, and measurement direction are calibrated and incorporated in the SOC data reduction software to relate the sensor readout with the test surface sag. Experimental results show that the SOC with the triangulation sensor can measure aspheric ground surfaces with an accuracy of 100 nm rms or better.

© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).
[DOI: 10.1117/1.OE.51.7.073603]

Subject terms: swing arm profilometer; profilometry; aspherics; optical testing; laser triangulation sensor; ground surface metrology.

Paper 120473 received Mar. 30, 2012; revised manuscript received May 16, 2012; accepted for publication May 30, 2012; published online Jul. 6, 2012.

Case Studies & Testimonials

  • Sometimes good news goes unnoticed for the longest time. We just stumbled on this unattributed, but complimentary note about the PSM.
    See  https://www.idex-hs.com/wp-content/uploads/2018/05/Enabling-Micron-Level-Mounting-Accuracy.pdf   

    Notice the PSM in the top center of Fig. 9.  Optical Perspectives Group would like to express "thank you, IDEX".

  • "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!"

    Weslin Pullen
    Hart Scientific Consulting International, LLC
    Tucson, Arizona

     

Worldwide Representatives

FOR SALES IN CHINA PLEASE CONTACT:

FOR SALES IN CHINA PLEASE CONTACT:
OPTurn Company Ltd
R607, Yingzhi Building, 49-3 Suzhoujie Str.
Beijing, China
+86-10 62527842
This email address is being protected from spambots. You need JavaScript enabled to view it.

More Info

FOR SALES IN ALL OTHER ASIAN COUNTRIES PLEASE CONTACT:

FOR SALES IN ALL OTHER ASIAN COUNTRIES PLEASE CONTACT:

清 原 耕 輔   Kosuke Kiyohara
清原光学 営業部   Kiyohara Optics / Sales
+81-3-5918-8501
This email address is being protected from spambots. You need JavaScript enabled to view it.

Kiyohara Optics Inc.
3-28-10 Funado Itabashi-Ku Tokyo, Japan 174-0041

More Info

FOR SALES IN UK & EU PLEASE CONTACT

Armstrong Optical

+44(0) 1604 654220

This email address is being protected from spambots. You need JavaScript enabled to view it.

More Info

FOR SALES IN AUSTRALIA & NEW ZEALAND PLEASE CONTACT

Mersenne Optical Consulting

This email address is being protected from spambots. You need JavaScript enabled to view it.

 

More Info

Use of this website constitutes acceptance of the Terms of Service Agreement.

Unless Otherwise Specified, All Content Copyright © 2007-2022 Optical Perspectives Group, LLC 
All Rights Reserved.
All Registered Trademarks are Property of their Respective Owners.

Optiper.com is a VisibleWebSite™ provided and managed by The3rdParty.co

Optics Valley