GB459277A - Improvements in and relating to photometers for measuring illumination - Google Patents

Improvements in and relating to photometers for measuring illumination

Info

Publication number
GB459277A
GB459277A GB22330/36A GB2233036A GB459277A GB 459277 A GB459277 A GB 459277A GB 22330/36 A GB22330/36 A GB 22330/36A GB 2233036 A GB2233036 A GB 2233036A GB 459277 A GB459277 A GB 459277A
Authority
GB
United Kingdom
Prior art keywords
photometers
relating
photo
measuring illumination
electric
Prior art date
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.)
Expired
Application number
GB22330/36A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB459277A publication Critical patent/GB459277A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

459,277. Photometric apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Lange, B. ; 45, Garystrasse, Berlin) Aug. 13, 1936, No. 22330. Convention date, Sept. 18, 1935. [Class 97 (i)] Relates to a photo meter of the type com prising a rectifier photo - electric cel 1 operatively connect ed to a galvanometer 4, 5 and consists in exposing the cell below a transparent member 3, which carries the scale over which the pointer 4 moves. The members 3 may be coloured so as to act as a filter. U.S.A. Specification 1,932,043 is referred to.
GB22330/36A 1935-09-18 1936-08-13 Improvements in and relating to photometers for measuring illumination Expired GB459277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE459277X 1935-09-18

Publications (1)

Publication Number Publication Date
GB459277A true GB459277A (en) 1937-01-05

Family

ID=6539562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22330/36A Expired GB459277A (en) 1935-09-18 1936-08-13 Improvements in and relating to photometers for measuring illumination

Country Status (1)

Country Link
GB (1) GB459277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545932A1 (en) * 1983-05-10 1984-11-16 Pruniaux Andre Device for measuring the intensity of ultraviolet radiation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545932A1 (en) * 1983-05-10 1984-11-16 Pruniaux Andre Device for measuring the intensity of ultraviolet radiation

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