FR2024525A1 - - Google Patents

Info

Publication number
FR2024525A1
FR2024525A1 FR6940946A FR6940946A FR2024525A1 FR 2024525 A1 FR2024525 A1 FR 2024525A1 FR 6940946 A FR6940946 A FR 6940946A FR 6940946 A FR6940946 A FR 6940946A FR 2024525 A1 FR2024525 A1 FR 2024525A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6940946A
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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 Bell and Howell Co filed Critical Bell and Howell Co
Publication of FR2024525A1 publication Critical patent/FR2024525A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • 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
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Spectrometry And Color Measurement (AREA)
FR6940946A 1968-11-29 1969-11-27 Withdrawn FR2024525A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78009568A 1968-11-29 1968-11-29

Publications (1)

Publication Number Publication Date
FR2024525A1 true FR2024525A1 (fr) 1970-08-28

Family

ID=25118580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6940946A Withdrawn FR2024525A1 (fr) 1968-11-29 1969-11-27

Country Status (6)

Country Link
US (1) US3558895A (fr)
AT (1) AT294567B (fr)
CH (1) CH516150A (fr)
DE (1) DE1958551A1 (fr)
FR (1) FR2024525A1 (fr)
GB (1) GB1251409A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699421A (en) * 1971-01-21 1972-10-17 Kollsman Instr Corp Tape position sensor, optical
US3726250A (en) * 1971-03-18 1973-04-10 Marconi Co Canada Indicator
US3758784A (en) * 1971-10-29 1973-09-11 G Vischulis Optical detecting head
US3777154A (en) * 1972-02-07 1973-12-04 R Lindsey Optical data processing system
US3892962A (en) * 1972-10-06 1975-07-01 Xerox Corp Thermal chamber for a developability regulating apparatus
US5212508A (en) * 1991-06-28 1993-05-18 Eastman Kodak Company Remote photo-electric interface in camera

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938666A (en) * 1955-10-07 1960-05-31 Sperry Rand Corp Record sensing means
US3114283A (en) * 1960-10-31 1963-12-17 Bausch & Lomb Light sensing method and apparatus therefor
US3372240A (en) * 1963-10-14 1968-03-05 Dictaphone Corp Time indicating recording and reproducing apparatus
US3407304A (en) * 1965-11-19 1968-10-22 Nasa Usa Micrometeoroid penetration measuring device
DE1497586A1 (de) * 1966-02-17 1969-07-10 Schneider Feinwerktechnik Jos Faseroptische Abtastvorrichtung
US3483389A (en) * 1968-01-23 1969-12-09 Dynamics Res Corp Electro-optical encoder having fiber optic coupling

Also Published As

Publication number Publication date
DE1958551A1 (de) 1970-06-04
GB1251409A (fr) 1971-10-27
AT294567B (de) 1971-11-25
US3558895A (en) 1971-01-26
CH516150A (fr) 1971-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse