• Home
  • Tags: kinematic nest

Articles tagged with: kinematic nest

Prism alignment using a Point Source Microscope

 

1. INTRODUCTION

Spherically mounted retroreflectors (SMRs) are an essential part of spatial metrology when using a laser tracker. However, the precision of the laser tracker measurement is no better than the precision with which the cube corner retroreflector is mounted in the spherical ball. Thus measuring the position of the apex of the cube corner with respect to the center of the ball is a critical part of both the assembly and inspection of SMRs. This leads to cost implications because the better centered the cube corner in the ball, the more the SMR costs.

We begin by explaining the use of SMRs with a laser tracker, and then explain how the question arose of whether an autostigmatic is useful in measuring the apex location of the cube corner. We follow this with the theory of the measurement based on a two-dimensional argument, but the same argument applies to the three-dimensional case. The two-dimensional case is much easier to explain and understand.

Finally, we look at how real hardware must be fixtured to make the measurements. At first it looks difficult because a sphere has no axis and the SMR must rotate about orthogonal axes to measure the apex location. However, a very simple fixture is satisfactory. We give some measured results to demonstrate the precision of the method.

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