Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of DE163157CpublicationCriticalpatent/DE163157C/de
G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
G01J1/00—Photometry, e.g. photographic exposure meter
G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
Silver Salt Photography Or Processing Solution Therefor
(AREA)
Control Of Exposure In Printing And Copying
(AREA)
Verfahren und Vorrichtung zum Steuern der Gradationskurven nach Messung der Belichtung zur Herstellung von Raster- und Halbtonfilmen nach Halbtonnegativen bzw. Farbauszuegen in der Reproduktionsfotografie