MRF Developments and Asphere Metrology Using VON Technology

Abstract

A brief overview of Asphere Stitching Interferometry (ASI), Variable Optical Nulling (VON), large optic polishing using Magneto-Rheological Finishing (MRF), and a new aspheric surface representation are presented. ASI is a technique to measure aspheres without the use of null lenses. ASI was combined with VON to achieve fringes across an entire field. The technique was demonstrated on a 6 inch F/2.2 lens. A few pictures are presented of polishing done for the NASA Spherical Primary Optical Telescope (SPOT) using MRF. Also, reference is given to a new method of presenting mirror shape using orthogonal polynomials.

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Document Details

Document Type
Technical Report
Publication Date
Jun 08, 2010
Accession Number
ADA536346

Entities

People

  • Marc Tricard

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Astigmatism
  • Department Of Defense
  • Diameters
  • Errors
  • Frequency
  • High Resolution
  • Information Operations
  • Interferometry
  • Manufacturing
  • Measurement
  • Metrology
  • Polishing
  • Polynomials
  • Standards
  • Wavefronts

Fields of Study

  • Physics

Readers

  • Graph Algorithms and Convex Optimization.
  • Military Training and Readiness Simulation
  • Optical Physics and Photonics.

Technology Areas

  • Space