19 
(21) Barakat, R., J. Opt, Soc. Am,, 52, 985 (1962) 
(22) Barakat, R,, and Morello, M. V,, J, Opt, Soc, Am«, 
52, 992, (1962) 
(23) Schade, 0. H,, J, Soc, Motion Picture Television Eng,, 
73, 81 (1964) 
(24) Brock, G. C., Image Evaluation for Reconnaissance, Itek 
Corporation, p. 12, Apr. 1963 
(25) Kelsall, D., Advanced Evaluation Techniques for Optical 
Systems, Internal Report RCA-AEDC-2266, Dec 1964, 
(26) Back, A., ICO Conference Preprints, Stockholm, 1959 
(27) Schade, 0. H., Optical Image Evaluation,NBS Circular 
526, p. 231, 1954 
(28) Technical Optics Section, Imperial College (London): 
Tables of Optical Frequency Response, Apr 1959 
References (29) through (65) are mainly concerned with equip 
ments for measuring OTF. 
(29) Sproson, W. N., A New Photoelectric Optical Bench, BBC 
Research Report No. T049 (1954)* 
(30) Ingelstam, E., and Lindberg, P. J., Photoelectric Exam 
ination of Intensity Distribution in Line Images, NBS 
Circular 526, p. 171 (1954) 
(31) Polster, H. D., Perkin Elmer Corp, Eng. Report No. 413 
(1955) 
(32) Naish, J. M., and Marchant, A.G. Measurement of the Res 
ponse Function of an Optical System, Royal Aircraft 
Establishment Technical Note PH493, 1956 
(35) Birch, K. G., A Scanning Instrument for the Measurement 
of Optical Frequency Response, Proc. Phys. Soc. 77, 901, 
(1961) 
(34) Sayanagi, K., Fourier Analysis With a Mono Filter for 
Measurement of the Response Function of Optical Systems, 
Appl. Phys. Japan, 27, 637 (1958) 
(35) Rosenhauer, K. and Rosenbruch, K. J., The Measurement of 
the Contrast Transmission Function by an Edge Analyzer, 
Z. Instrumentenk, 67, 179 (1959); see also Messung der 
Optischen Ubertragungsfunktion nach Amplitude und Phase 
mit Einem Halbautomatischen Analysator, Optik, 21, 652 
(1964)