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The people who developed the Todd-AO process

The 70mm Newsletter
Collected by: Thomas Hauerslev Date: 01.07.2008
Name Job
Henry Cole 65mm camera construction and mechanical printing mechanisms. Has worked for Reichert Fiber Optics.
Harry Crandon Chemical Printing Engineer.
Ian Crawford Mechanical Printing Mechanism.
John Davis Manager of optical Computing Facility and DP70.
Dr. John G Frayne Westrex, developed the six-track magnetic recording system for Todd-AO.
Hobart French Found old 65mm Ernemann projectors at Paramount Pictures.
George Granitsas Chief metallurgist. Todd-AO Screen
Fred S Heynes (Formerly of Westrex) developed Todd-AO orthosonic sound system for the Todd-AO corporation.
Will Hicks Todd-AO screen.
Professor Robert E (Hoppy) Hopkins Brian O’Brien from the Institute of Optics recruited him and 150 research specialists and engineer associates at University of Rochester. Robert E Hopkins developed the basic wide-angle camera lens. Consultant to American Optical Company. Generally in charge of development of lens design.

Robert E. Hopkins, Inventor of Todd-AO Lens that Ushered in 70mm Wide-Screen Movies, dies at 94
Arthur Kavanaugh Printer illumination optics. Special printer.
Jan J Kotte Built the DP70 at Philips ELA plant in Einhoven, Holland.
Edward W Moon Todd-AO screen.
Dr. Brian O'Brien (20.12.1898-01.07.1992) Dean of Rochester school of optics. Director of the Institute of Optics of the University of Rochester (built in 1930 by Dr O'Brien). Had agreed to join American Optical company as Vice President of Research and development in November 1952. In charge of development of Todd-AO process.
Brian O'Brien, Jr. 65mm camera and generally in charge of planning etc.
William (Bill) E Peck General Manager of Motion Picture Division of American Optical, Southbridge, Massachusetts. Developed the DP70 with Jan J Kotte.
Norman Powers Printing.
Schuler A Sandford Todd-AO technician on "Oklahoma!"
Dr. Walter (Walt) P Siegmund Ph.D. Graduate student of Brian O'Brien. He came along as a witness the night Brian O'Brien and Michael Todd first met in a bar across Rochester airport. Special printer, screen, lenses etc.

Walter Siegmund Interview
Larry Simons DP70 Sprockets and instrumentation.
Walter Stewart President of American Optical company in Southbridge in 1952.
Richard Walters 128° lens design.
Donald Whitney
Henry Woodbridge Vice president of AO in 1952.
Colin Yates Head of the Precision Optical Shop in the research division. 128’ lens.
More in 70mm reading:

The Todd-AO Projector

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Updated 07-01-23