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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Lamp Co
Original Assignee
Westinghouse Lamp Co
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 filed by Westinghouse Lamp CofiledCriticalWestinghouse Lamp Co
Application grantedgrantedCritical
Publication of FR686944ApublicationCriticalpatent/FR686944A/fr
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
G01J1/44—Electric circuits
G01J1/46—Electric circuits using a capacitor
Landscapes
Engineering & Computer Science
(AREA)
Power Engineering
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Spectroscopy & Molecular Physics
(AREA)
FR686944D1928-12-241929-12-19Perfectionnements à la mesure des radiations et aux appareils indicateurs
ExpiredFR686944A
(fr)