GB1031380A - Optical density comparator system - Google Patents

Optical density comparator system

Info

Publication number
GB1031380A
GB1031380A GB2608962A GB2608962A GB1031380A GB 1031380 A GB1031380 A GB 1031380A GB 2608962 A GB2608962 A GB 2608962A GB 2608962 A GB2608962 A GB 2608962A GB 1031380 A GB1031380 A GB 1031380A
Authority
GB
United Kingdom
Prior art keywords
optical density
comparator system
density comparator
optical
density
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
GB2608962A
Inventor
Ian Overington
David John Williams
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.)
British Aircraft Corp Ltd
Original Assignee
British Aircraft Corp Operating Ltd
British Aircraft Corp 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 British Aircraft Corp Operating Ltd, British Aircraft Corp Ltd filed Critical British Aircraft Corp Operating Ltd
Priority to GB2608962A priority Critical patent/GB1031380A/en
Publication of GB1031380A publication Critical patent/GB1031380A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • 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
GB2608962A 1962-07-06 1962-07-06 Optical density comparator system Expired GB1031380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2608962A GB1031380A (en) 1962-07-06 1962-07-06 Optical density comparator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2608962A GB1031380A (en) 1962-07-06 1962-07-06 Optical density comparator system

Publications (1)

Publication Number Publication Date
GB1031380A true GB1031380A (en) 1966-06-02

Family

ID=10238194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2608962A Expired GB1031380A (en) 1962-07-06 1962-07-06 Optical density comparator system

Country Status (1)

Country Link
GB (1) GB1031380A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135448A (en) * 1982-12-15 1984-08-30 Sira Ltd Inspection apparatus and method
GB2192454A (en) * 1986-07-01 1988-01-13 Intellemetrics Limited System for measuring optical coatings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135448A (en) * 1982-12-15 1984-08-30 Sira Ltd Inspection apparatus and method
GB2192454A (en) * 1986-07-01 1988-01-13 Intellemetrics Limited System for measuring optical coatings

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