IV Instruments for the Measuring of Optical Transfer Functions

Publisher Summary This chapter reviews the methods for measuring optical transfer function (OTF) of optical systems in accordance with the classification based on the underlying principles. To apply these methods for practical use in laboratories or in factories, the accuracy of and the time required for the measurement come into question. If high accuracy of the measurement is desired, the instrument becomes more complicated and the time required for a measurement becomes longer. On the other hand, if the time required for a measurement is desired to be shorter, the accuracy of measurement becomes poorer. The accuracy of the measurement is affected by various elements, especially, optically by the shape distortion of the sinusoidal grating, electro-optically by the linearity of the photodetector, and electrically by the stability and the signal-to-noise (S/N) ratio of the amplifier and the frequency response of the recorder. The error tolerance of the measurement may be 3% for instruments tested in laboratories and 5% for instruments tested in factories. All measurements of OTF include the operations for setting of the lens at a condition to be tested, normalizing of the modulus and phase of OTF, measuring of OTF, and recording of the results.

[1]  J. Wilczynski.  Some Properties of Photographic Image Recording , 1961 .

[2]  A. J. Montgomery.  New Interferometer for the Measurement of Modulation Transfer Functions , 1964 .

[3]  D. H. Kelly,et al.  Improved Sinusoidal Test Charts , 1958 .

[4]  P. Lindberg.  Measurement of Contrast Transmission Characteristics in Optical Image Formation , 1954 .

[5]  J. Viénot.  Determination of the Fourier Spectra of Photographic Images , 1958 .

[6]  An Instrument for Measurement of the Optical Transfer Function , 1963 .

[7]  G. David Scott.  Obtaining Low Orders of Interference in Measuring Film Thicknesses by Multiple Beam Interferometry , 1958 .

[8]  W. H. Steel.  The Defocused Image of Sinusoidal Gratings , 1956 .

[9]  D. Kelsall.  Optical Frequency Response Characteristics in the presence of Spherical Aberration measured by an automatically recording Interferometric Instrument , 1959 .

[10]  Ein Verfahren Zur Messung der Kontrast-Übertragungsfunktion Photographischer Objektive , 1957 .

[11]  H. Hopkins.  On the diffraction theory of optical images , 1953, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[12]  Hitoshi Ohzu,et al.  Method of Measurement of Response Function by Means of Random Chart , 1957 .

[13]  Francis E. Washer,et al.  New Resolving Power Test Chart , 1951 .

[14]  J. Coltman.  The Specification of Imaging Properties by Response to a Sine Wave Input , 1954 .

[15]  Robert L. Lamberts.  Relationship between the Sine-Wave Response and the Distribution of Energy in the Optical Image of a Line* , 1958 .

[16]  Tadao Tsuruta.  A New Type of Shearing Interferometer for the Measurement of Transfer Functions of the Microscope Objective , 1963 .

[17]  W. H. Steel.  A POLARIZATION INTERFEROMETER FOR THE MEASUREMENT OF TRANSFER FUNCTIONS. , 1964, Optica acta.

[18]  A Photoelectric Lens Bench , 1947 .

[19]  H. H. Hopkins.  The Aberration Permissible in Optical Systems , 1957 .

[20]  T. Tsuruta.  Measurement of Transfer Functions of Photographic Objectives by Means of a Polarizing Shearing Interferometer , 1963 .

[21]  Recording Electronic Lens Bench , 1958 .

[22]  H. H. Hopkins.  Interferometric Methods for the Study of Diffraction Images , 1955 .

[23]  K. Birch.  A Scanning Instrument for the Measurement of Optical Frequency Response , 1961 .

[24]  Otto H. Schade,et al.  A Method of Measuring the Optical Sine-Wave Spatial Spectrum of Television Image Display Devices , 1958 .

[25]  H. H. Hopkins.  The frequency response of a defocused optical system , 1955, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[26]  M. Born,et al.  A Photo-Electric Fourier Transformer , 1945, Nature.

[27]  L R Baker,et al.  An Interferometer for measuring the Spatial Frequency Response of a Lens System , 1955 .

[29]  Erik Ingelstam,et al.  Contrast-Transmission Functions Determined Experimentally for Asymmetrical Images and for the Combination of Lens and Photographic Emulsion , 1956 .

[30]  J. Tsujiuchi,et al.  Interferometric Study of Microscope Objectives , 1958 .