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Journal of the SMPTE ( Volume: 83, Issue: 1, January 1974)
New Design Principle for High-Ratio Zoom Lenses
SMPTE • Journal Article • [Active]
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- 1.1. BBC specifications for zoom lenses , No. TV/139/C, Aug. 1968 .EXTERNAL
- 1.2. IRT regulations for studio color cameras , Nov. 1970 .EXTERNAL
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- 2.1. Hopkins H. H. , “A class of symmetrical systems of variable power,” pp. 17 – 32 , Proceedings London Conference on Optical Instruments, 1950, Chapman and Hall , London ( 1951 ).EXTERNAL
- 2.2. Flugge J. , “Das photographische Objektiv,” p. 208 , Wissenschaftliche und angewandte Photographic , Vol. I , Springer , Wein ( 1955 ).EXTERNAL
- 3. Macher K. , “High-aperture photographic objective with variable focal length,” U.S. Patent 3,272,073–1960 (German, 1,197,243).EXTERNAL
- 4. Macher K. , “High-aperture objective with variable focal length,” U.S. Patent 3,549,235–1967 (German 1,296,814).EXTERNAL