GB621678A - Improvements in or relating to apparatus for the comparison of radiation - Google Patents

Improvements in or relating to apparatus for the comparison of radiation

Info

Publication number
GB621678A
GB621678A GB1815045A GB1815045A GB621678A GB 621678 A GB621678 A GB 621678A GB 1815045 A GB1815045 A GB 1815045A GB 1815045 A GB1815045 A GB 1815045A GB 621678 A GB621678 A GB 621678A
Authority
GB
United Kingdom
Prior art keywords
radiation
cells
produce
temperature
shutter
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
GB1815045A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1815045A priority Critical patent/GB621678A/en
Publication of GB621678A publication Critical patent/GB621678A/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
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

621,678. Electric indicating systems for temperature. GALL, D. C. July 16, 1945, No. 18150. [Class 40 (i)] [Also in Group XL (b)] The radiation from a hot body is divided by optical systems 1, 2 into two paths, each path containing a different filter, 4, 5 (e.g. one red and one green), so that cells 6, 7 are each illuminated by light of different wavelengths, and the cells are connected to produce a differential E.M.F., which is used to vary the radiation reaching the cells so as to produce a position of balance. Preferably the E.M.F. is used to vary the position of a shutter 8, and the E.M.F. necessary to produce the balance is a measure of the temperature and may be used to control the temperature of the hot body. The shutter 8 may be a graded obturator.
GB1815045A 1945-07-16 1945-07-16 Improvements in or relating to apparatus for the comparison of radiation Expired GB621678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1815045A GB621678A (en) 1945-07-16 1945-07-16 Improvements in or relating to apparatus for the comparison of radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1815045A GB621678A (en) 1945-07-16 1945-07-16 Improvements in or relating to apparatus for the comparison of radiation

Publications (1)

Publication Number Publication Date
GB621678A true GB621678A (en) 1949-04-14

Family

ID=10107494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1815045A Expired GB621678A (en) 1945-07-16 1945-07-16 Improvements in or relating to apparatus for the comparison of radiation

Country Status (1)

Country Link
GB (1) GB621678A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658390A (en) * 1948-02-06 1953-11-10 Leeds & Northrup Co Radiation pyrometry
DE953746C (en) * 1951-02-02 1956-12-06 Bernhard Deltschaft Fabrik Fue Measuring device for determining the color temperature of light sources with a continuous spectrum
US2800023A (en) * 1954-03-24 1957-07-23 Illinois Testing Laboratories Radiation pyrometers
GB2177196A (en) * 1985-06-18 1987-01-14 Negretti Aviat Ltd Improvements in means for detection and/or compensation for changes in the optical gain of a pyrometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658390A (en) * 1948-02-06 1953-11-10 Leeds & Northrup Co Radiation pyrometry
DE953746C (en) * 1951-02-02 1956-12-06 Bernhard Deltschaft Fabrik Fue Measuring device for determining the color temperature of light sources with a continuous spectrum
US2800023A (en) * 1954-03-24 1957-07-23 Illinois Testing Laboratories Radiation pyrometers
GB2177196A (en) * 1985-06-18 1987-01-14 Negretti Aviat Ltd Improvements in means for detection and/or compensation for changes in the optical gain of a pyrometer

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