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EXPOSURE SYSTEM FOR OBTAINING A GRADIENT SENSITOMETRIC INDICATOR

机译:获得梯度感光度指示器的曝光系统

摘要

P The present invention is in the field of photography, and is used for measuring the sensitometric characteristics of a photographic element (1), such as for example a strip of photographic film. The present invention relates more particularly to an exposure system (38) allowing the production of an sensitometric control with exposure gradient (10), (20), placed on a photographic element (1), and allowing the measurement of data. The photometric sensor (40) of the photographic element (1). The exposure system (38) comprises a light energy source (31) controlled by a module for managing the exposure parameters (35). The exposure system (38) makes it possible to produce on the exposed film strip (1) the single sensitometric control (10), (20), so that this sensitometric control includes a gradient of exposure zones (12) , (14), (16), (22), (24), (26) making it possible to obtain all of the sensitometric characteristics (40) of said photographic film. The sensitometric indicator (10), (20) is produced from the nominal sensitometric characteristics (41) of the film (1), and of the instantaneous speed of the relative displacement of said film in front of a light energy source (31). invention finds its application in the field of photography and in particular the cinematographic field. / P
机译:

本发明属于照相领域,用于测量照相元件(1)例如照相胶片带的感光特性。更具体地,本发明涉及一种曝光系统(38),该曝光系统(38)允许产生放置在照相元件(1)上的具有曝光梯度(10),(20)的感光控制装置,并允许进行数据测量。摄影元件(1)的测光传感器(40)。曝光系统(38)包括由模块控制的用于管理曝光参数(35)的光能源(31)。曝光系统(38)使得可以在曝光的胶片带(1)上产生单个感光控制(10),(20),从而该感光控制包括曝光区域(12),(14),...的梯度。通过(16),(22),(24),(26),可以获得所述照相胶片的所有感光特性(40)。感光指示剂(10),(20)由薄膜(1)的标称感光特征(41)以及所述薄膜在光能源(31)前面的相对位移的瞬时速度产生。本发明在摄影领域,尤其是电影摄影领域中得到了应用。

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