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FILM FLATNESS IN SURVEY CAMERAS
Author(s) -
Clark J. M. T.
Publication year - 1968
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/j.1477-9730.1968.tb00926.x
Subject(s) - flatness (cosmology) , flattening , register (sociolinguistics) , optics , interferometry , computer science , materials science , engineering , physics , mechanical engineering , linguistics , philosophy , cosmology , quantum mechanics
The extent of lack of flatness of the film in air survey cameras was examined by the use of interferometry. Following an assessment of the merits of vacuum back and register glass flattening devices, a roller flattener was developed for use in conjunction with a register glass and with discrete vacuum application. Encouraging results have been obtained in the early stages of its use.