Abstract

The performance of lenses made from glass elements containing defects such as bubbles, streaks, striae, etc., has been measured and an attempt made to compare the effect of the various defects. Four defective lenses and a good or control lens were used. The performance in the image plane was determined by four different evaluation procedures. A summary evaluation showed that the lens containing striae, although the most difficult defect to detect, produced the lowest quality image.

© 1965 Optical Society of America

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References

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  1. F. Twyman, Prism and Lens Making (Hilger & Watts, London, 2nd ed., 1952), Chap. 12, p. 434.
  2. Fred W. Rosberry, Photogrammetric Eng. 27, 155 (1961).
  3. F. C. Higgins, L. A. Jones, J. Soc. Motion Picture Engrs. 58, 277 (1952).

1961

Fred W. Rosberry, Photogrammetric Eng. 27, 155 (1961).

1952

F. C. Higgins, L. A. Jones, J. Soc. Motion Picture Engrs. 58, 277 (1952).

Higgins, F. C.

F. C. Higgins, L. A. Jones, J. Soc. Motion Picture Engrs. 58, 277 (1952).

Jones, L. A.

F. C. Higgins, L. A. Jones, J. Soc. Motion Picture Engrs. 58, 277 (1952).

Rosberry, Fred W.

Fred W. Rosberry, Photogrammetric Eng. 27, 155 (1961).

Twyman, F.

F. Twyman, Prism and Lens Making (Hilger & Watts, London, 2nd ed., 1952), Chap. 12, p. 434.

J. Soc. Motion Picture Engrs.

F. C. Higgins, L. A. Jones, J. Soc. Motion Picture Engrs. 58, 277 (1952).

Photogrammetric Eng.

Fred W. Rosberry, Photogrammetric Eng. 27, 155 (1961).

Other

F. Twyman, Prism and Lens Making (Hilger & Watts, London, 2nd ed., 1952), Chap. 12, p. 434.

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Figures (3)

Fig. 1
Fig. 1

Interferograms of the five lenses investigated, photographed on a Twyman-Green interferometer. Vertical column at left illustrates the minimum fringe patterns. Right-hand column shows fringe patterns with a small amount of tilt introduced by the interferometer.

Fig. 2
Fig. 2

Photograph of the scene used for subjective rating of lens performance. Four areas on the print were used for examination of detail.

Fig. 3
Fig. 3

Sine wave response curves determined from the five lenses investigated.

Tables (1)

Tables Icon

Table I Summary of Results as Determined by the Five Methods of Image Analysis

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