GB9904520D0 - Electro-magnetic detection - Google Patents

Electro-magnetic detection

Info

Publication number
GB9904520D0
GB9904520D0 GB9904520A GB9904520A GB9904520D0 GB 9904520 D0 GB9904520 D0 GB 9904520D0 GB 9904520 A GB9904520 A GB 9904520A GB 9904520 A GB9904520 A GB 9904520A GB 9904520 D0 GB9904520 D0 GB 9904520D0
Authority
GB
United Kingdom
Prior art keywords
electro
magnetic detection
magnetic
detection
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.)
Granted
Application number
GB9904520A
Other versions
GB2347210B (en
GB2347210A (en
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.)
NDC Technologies Ltd
Original Assignee
Infrared Engineering Ltd
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 Infrared Engineering Ltd filed Critical Infrared Engineering Ltd
Priority to GB9904520A priority Critical patent/GB2347210B/en
Publication of GB9904520D0 publication Critical patent/GB9904520D0/en
Publication of GB2347210A publication Critical patent/GB2347210A/en
Application granted granted Critical
Publication of GB2347210B publication Critical patent/GB2347210B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01J1/44—Electric circuits
    • 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/28—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source
    • G01J1/30—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors
    • G01J1/32—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors adapted for automatic variation of the measured or reference value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9904520A 1999-02-26 1999-02-26 Infrared gauge Expired - Lifetime GB2347210B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9904520A GB2347210B (en) 1999-02-26 1999-02-26 Infrared gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9904520A GB2347210B (en) 1999-02-26 1999-02-26 Infrared gauge

Publications (3)

Publication Number Publication Date
GB9904520D0 true GB9904520D0 (en) 1999-04-21
GB2347210A GB2347210A (en) 2000-08-30
GB2347210B GB2347210B (en) 2003-08-06

Family

ID=10848619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9904520A Expired - Lifetime GB2347210B (en) 1999-02-26 1999-02-26 Infrared gauge

Country Status (1)

Country Link
GB (1) GB2347210B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020095186A (en) * 2000-03-02 2002-12-20 엔디씨 인프라레드 엔지니어링 리미티드 Electromagnetic detection apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB378972A (en) * 1931-05-22 1932-08-22 Stone J & Co Ltd Improvements in and connected with light-sensitive detector or relay devices comprising sensitive means such as photo-electric or other cells
US3639768A (en) * 1968-10-09 1972-02-01 Corning Glass Works Feedback controlled photosensitive object detecting system
BE790938A (en) * 1971-11-04 1973-05-03 Dryczynski Kurt PHOTOELECTRIC CONTROL PROCESS AND DEVICE
JPS5713327A (en) * 1980-06-27 1982-01-23 Laurel Bank Mach Co Ltd Optical detector
US4412744A (en) * 1981-06-01 1983-11-01 E. I. Du Pont De Nemours & Co. Absolute spectrophotometer
US5132527A (en) * 1991-05-30 1992-07-21 Gec-Marconi Electronic Systems Corp. Compensation arrangement for opto-electronic reference generator
US5340974A (en) * 1991-12-09 1994-08-23 Hughes Aircraft Company Polychromatic source calibration by one or more spectrally filtered photodetector currents

Also Published As

Publication number Publication date
GB2347210B (en) 2003-08-06
GB2347210A (en) 2000-08-30

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20190225