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Title: Embedded fiducials in optical surfaces

Abstract

Embedded fiducials are provided in optical surfaces and a method for embedding the fiducials. Fiducials, or marks on a surface, are important for optical fabrication and alignment, particularly when individual optical elements are aspheres. Fiducials are used during the course of the polishing process to connect interferometric data, and the equation describing the asphere, to physical points on the optic. By embedding fiducials below the surface of the optic and slightly outside the clear aperture of the optic, the fiducials are not removed by polishing, do not interfere with the polishing process, and do not affect the performance of the finished optic.

Inventors:
 [1]
  1. Santa Cruz, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872815
Patent Number(s):
6014264
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
embedded; fiducials; optical; surfaces; provided; method; embedding; marks; surface; fabrication; alignment; particularly; individual; elements; aspheres; course; polishing; process; connect; interferometric; data; equation; describing; asphere; physical; optic; below; slightly; outside; aperture; removed; interfere; affect; performance; finished; optical element; optical elements; optical surfaces; optical surface; embedded fiducials; /359/356/430/

Citation Formats

Sommargren, Gary E. Embedded fiducials in optical surfaces. United States: N. p., 2000. Web.
Sommargren, Gary E. Embedded fiducials in optical surfaces. United States.
Sommargren, Gary E. Sat . "Embedded fiducials in optical surfaces". United States. https://www.osti.gov/servlets/purl/872815.
@article{osti_872815,
title = {Embedded fiducials in optical surfaces},
author = {Sommargren, Gary E},
abstractNote = {Embedded fiducials are provided in optical surfaces and a method for embedding the fiducials. Fiducials, or marks on a surface, are important for optical fabrication and alignment, particularly when individual optical elements are aspheres. Fiducials are used during the course of the polishing process to connect interferometric data, and the equation describing the asphere, to physical points on the optic. By embedding fiducials below the surface of the optic and slightly outside the clear aperture of the optic, the fiducials are not removed by polishing, do not interfere with the polishing process, and do not affect the performance of the finished optic.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

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