GB1387696A - Determination of integrated optical density of an object - Google Patents

Determination of integrated optical density of an object

Info

Publication number
GB1387696A
GB1387696A GB1781672A GB1781672A GB1387696A GB 1387696 A GB1387696 A GB 1387696A GB 1781672 A GB1781672 A GB 1781672A GB 1781672 A GB1781672 A GB 1781672A GB 1387696 A GB1387696 A GB 1387696A
Authority
GB
United Kingdom
Prior art keywords
optical density
integral optical
field
measured
tube
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
GB1781672A
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.)
MO G UNI IM MV LOMONOSOVA
Original Assignee
MO G UNI IM MV LOMONOSOVA
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 MO G UNI IM MV LOMONOSOVA filed Critical MO G UNI IM MV LOMONOSOVA
Priority to GB1781672A priority Critical patent/GB1387696A/en
Publication of GB1387696A publication Critical patent/GB1387696A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/90—Plate chromatography, e.g. thin layer or paper chromatography
    • G01N30/95—Detectors specially adapted therefor; Signal analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

1387696 Measuring integral optical density MOSKOVSKY GOSUDARSTVENNY UNIVERSITET IMENI MV LOMONOSOVA 18 April 1972 17816/72 Heading G1A The integral optical density i.e. the optical density (log (Io/1)) integrated over a particular field of view of area S of an object is measured by a method involving detecting the light which has passed through the object after it has also been acted on by an image converter tube having a luminescent screen with a logarithmic conversion characteristic. The field of view for detection is defined by aperture diaphragm 4, behind which is positioned an image converter having a screen of e.g. 0À17% manganese, 3 x 10<SP>-4</SP>% cobalt and 99À8% zinc sulphide. Alternatively, the converter input aperture is used to define the detection field. Source 2 and a projection system 3 illumi nate the object (not shown) and a photo-multiplier 6 detects the tube 5 output, e.g. via an orange filter. In operation, two consecutive measurements are made, one with the object absent, and one with it present the second measurement being subtracted from the former to give a value proportional to integral optical density. The objects which may be measured are e.g. biological cells. The system may include a microscope optics and if necessary a monochrometer photographic films and plates, chromatograms &c. may be examined by employing projection optics.
GB1781672A 1972-04-18 1972-04-18 Determination of integrated optical density of an object Expired GB1387696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1781672A GB1387696A (en) 1972-04-18 1972-04-18 Determination of integrated optical density of an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1781672A GB1387696A (en) 1972-04-18 1972-04-18 Determination of integrated optical density of an object

Publications (1)

Publication Number Publication Date
GB1387696A true GB1387696A (en) 1975-03-19

Family

ID=10101731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1781672A Expired GB1387696A (en) 1972-04-18 1972-04-18 Determination of integrated optical density of an object

Country Status (1)

Country Link
GB (1) GB1387696A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570193A (en) * 1992-07-02 1996-10-29 Indigo N.V. Concentration detector for colored toner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570193A (en) * 1992-07-02 1996-10-29 Indigo N.V. Concentration detector for colored toner

Similar Documents

Publication Publication Date Title
US3623812A (en) Method for the automated electronic densitometric evaluation of separated material mixtures, using carrierless electrophoresis
US2470877A (en) Method and apparatus for detecting variations in the appearance of an object or sample
GB1387696A (en) Determination of integrated optical density of an object
Altman et al. Microdensitometer for photographic research
US3535044A (en) Total organic carbon colorimeter
JPS5665121A (en) Distance measuring and photometric device of camera
GB1318720A (en) Apparatus for identifying particles according to their microstructure variations
JPS5610201A (en) Object dimension measuring device
GB1013740A (en) Improvements in or relating to optical measuring or indicating instruments
Shaw The Equivalent Quantum Efficiency of Aerial Films
GB1295854A (en)
JPS5739306A (en) Shape detector
GB1326448A (en) Atomic absorption photometer
Curtain Photoelectric comparator for Rayleigh fringe electrophoresis patterns
US3713742A (en) Scene auto-correlator
Demarest Photoelectirc Vitamin A Photometer
Gray Coude Spectral Line Scanner.
JPH03233338A (en) Integrating sphere inner wall reflectance measuring method
SU628411A1 (en) Densitometer
SU365585A1 (en) INSTALLATION FOR MEASUREMENT OF SPECTRAL COEFFICIENT OF RADIATION OF MATERIALS AT HIGH
JPS57135306A (en) Measuring method of microsubstance
JPS57142505A (en) Measuring device for inner diameter of fine tube
JPS5488158A (en) Optical edge detecting method
SU1654654A1 (en) Device for optical image area measurements
AT334656B (en) DEVICE FOR DETERMINING THE INTEGRAL EXTINCTION OF OBJECTS

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee