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Publication of NL6611506ApublicationCriticalpatent/NL6611506A/xx
Publication of NL138866BpublicationCriticalpatent/NL138866B/xx
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
G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
Exposure Control For Cameras
(AREA)
Polarising Elements
(AREA)
Shutters For Cameras
(AREA)
NL666611506A1965-08-161966-08-16Inrichting voor het bepalen van de contrasten in een fotografisch af te beelden veld.
NL138866B
(nl)