Society of Motion Picture and Television Engineers - The Bell & Howell Cooke Varo Lens

Author(s): A. Warmisham ; R. F. Mitchell
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 October 1932
Volume: 19
Page(s): 329 - 339
ISSN (Paper): 0097-5834
DOI: 10.5594/J05480
Regular:

A variable focus, variable magnification lens of new and outstanding design is described. The Varo is a "zoom" type lens, introducing the conception of a variable three-element system in place of... View More

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