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:
-
- Santa Cruz, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (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}
}
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