OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 20, Iss. 13 — Jul. 1, 1981
  • pp: 2257–2262

Periodic aperture size measurement with submicron accuracy: application to nonuniform detection in color CRT shadow masks

Akito Iwamoto and Hidekazu Sekizawa  »View Author Affiliations

Applied Optics, Vol. 20, Issue 13, pp. 2257-2262 (1981)

View Full Text Article

Enhanced HTML    Acrobat PDF (653 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A novel periodic aperture size measurement optical system, which makes use of a coherent light beam/lens 2-D Fourier-transform property, is proposed. Measuring gain and errors is discussed. This optical system is able to produce aperture widths on a 3-D formed surface with the same accuracy as those on a flat surface and is well suited for measuring small aperture size variations in shadow masks for color TV tubes. These variations in shadow masks are considered to cause luminous and color nonuniformities and have been detected heretofore only by visual inspection. The minimum detectable size variation for this new measuring method is ∼0.1 μm.

© 1981 Optical Society of America

Original Manuscript: October 27, 1980
Published: July 1, 1981

Akito Iwamoto and Hidekazu Sekizawa, "Periodic aperture size measurement with submicron accuracy: application to nonuniform detection in color CRT shadow masks," Appl. Opt. 20, 2257-2262 (1981)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. L. Flamholz, H. A. Frost, IBM J. Res. Dev. 17, 509 (1973). [CrossRef]
  2. J. J. Moscony, RCA Eng. 25, 30 (1979).
  3. A. Papoulis, Systems and Transforms with Applications in Optics (McGraw-Hill, New York, 1968).
  4. A. Iwamoto (to be published).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited