Modelling local defects on the surface of high performance objective lenses

Performances of high quality imaging systems are often affected by surface or glass defects, like scratches, bubbles and other localized disturbances. The goal of the present investigation is the modelling of scratches on the surfaces of lenses and analysing the resulting changes in the diffraction...

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Bibliographic Details
Published in:Journal of optics. A, Pure and applied optics Pure and applied optics, 2005-07, Vol.7 (7), p.265-270
Main Authors: Nagy, Zs, Koppa, P, Újhelyi, F, Richter, P
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geometrical optics
Image forming and processing
Imaging and optical processing
Optical system design
Optics
Physics
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Summary:Performances of high quality imaging systems are often affected by surface or glass defects, like scratches, bubbles and other localized disturbances. The goal of the present investigation is the modelling of scratches on the surfaces of lenses and analysing the resulting changes in the diffraction spot quality. High numerical aperture focusing objectives used in optical storage are especially sensitive to this type of defect, since the size of the diffraction spot and the power-density distribution determines the quality of both the written pits and received signal.
ISSN:1464-4258
1741-3567
DOI:10.1088/1464-4258/7/7/001