GB1297913A - - Google Patents

Info

Publication number
GB1297913A
GB1297913A GB3843361A GB1297913DA GB1297913A GB 1297913 A GB1297913 A GB 1297913A GB 3843361 A GB3843361 A GB 3843361A GB 1297913D A GB1297913D A GB 1297913DA GB 1297913 A GB1297913 A GB 1297913A
Authority
GB
United Kingdom
Prior art keywords
radiation
segments
unwanted
oct
chopped
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
GB3843361A
Other languages
English (en)
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 filed Critical
Publication of GB1297913A publication Critical patent/GB1297913A/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
    • G01J1/10—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
    • G01J1/34—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 separate light paths used alternately or sequentially, e.g. flicker
    • G01J1/36—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 separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors
    • 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
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0803—Arrangements for time-dependent attenuation of radiation signals
    • G01J5/0805—Means for chopping radiation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB3843361A 1961-10-26 1961-10-26 Expired GB1297913A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3843361 1961-10-26

Publications (1)

Publication Number Publication Date
GB1297913A true GB1297913A (enrdf_load_stackoverflow) 1972-11-29

Family

ID=10403399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3843361A Expired GB1297913A (enrdf_load_stackoverflow) 1961-10-26 1961-10-26

Country Status (1)

Country Link
GB (1) GB1297913A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028602A1 (en) * 1996-12-20 1998-07-02 Raytheon Company Semi-opaque chopper for thermal imaging system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998028602A1 (en) * 1996-12-20 1998-07-02 Raytheon Company Semi-opaque chopper for thermal imaging system and method
GB2336965A (en) * 1996-12-20 1999-11-03 Raytheon Co Semi-opaque chopper for thermal imaging system and method
US6034371A (en) * 1996-12-20 2000-03-07 Raytheon Company Semi-opaque chopper for thermal imaging system and method

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees