JPS493841B1 - - Google Patents

Info

Publication number
JPS493841B1
JPS493841B1 JP44063501A JP6350169A JPS493841B1 JP S493841 B1 JPS493841 B1 JP S493841B1 JP 44063501 A JP44063501 A JP 44063501A JP 6350169 A JP6350169 A JP 6350169A JP S493841 B1 JPS493841 B1 JP S493841B1
Authority
JP
Japan
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.)
Pending
Application number
JP44063501A
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 JPS493841B1 publication Critical patent/JPS493841B1/ja
Pending 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
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Adjustable Resistors (AREA)
  • Switches With Compound Operations (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
JP44063501A 1968-08-14 1969-08-12 Pending JPS493841B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL686811524A NL155104B (nl) 1968-08-14 1968-08-14 Schakeltoestel voor het voeden van de lichtbron van een fotografisch vergrotingsapparaat.

Publications (1)

Publication Number Publication Date
JPS493841B1 true JPS493841B1 (ja) 1974-01-29

Family

ID=19804365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44063501A Pending JPS493841B1 (ja) 1968-08-14 1969-08-12

Country Status (9)

Country Link
US (1) US3647297A (ja)
JP (1) JPS493841B1 (ja)
AT (1) AT309207B (ja)
BE (1) BE737385A (ja)
CH (1) CH534370A (ja)
FR (1) FR2015647A1 (ja)
GB (1) GB1270009A (ja)
NL (1) NL155104B (ja)
SE (1) SE345021B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077148U (ja) * 1973-11-14 1975-07-04

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2188155B1 (ja) * 1972-06-06 1974-12-27 Matore Georges
US3874793A (en) * 1973-04-09 1975-04-01 Philip D Nielsen Electronic print exposure analyzer
US4812882A (en) * 1986-10-14 1989-03-14 Ciba-Geigy Ag Contrast monitor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2149250A (en) * 1938-02-26 1939-03-07 Joseph M Bing Photometer
US2201606A (en) * 1939-03-06 1940-05-21 Joseph M Bing Automatic exposure control
US2605447A (en) * 1950-07-17 1952-07-29 John H Troup Enlargement photography
US3086709A (en) * 1960-02-17 1963-04-23 Simmon Brothers Inc Density control for photographic enlargers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077148U (ja) * 1973-11-14 1975-07-04

Also Published As

Publication number Publication date
NL155104B (nl) 1977-11-15
CH534370A (de) 1973-02-28
AT309207B (de) 1973-08-10
GB1270009A (en) 1972-04-12
NL6811524A (ja) 1970-02-17
DE1939995B2 (de) 1976-03-04
BE737385A (ja) 1970-02-12
US3647297A (en) 1972-03-07
SE345021B (ja) 1972-05-08
DE1939995A1 (de) 1970-03-12
FR2015647A1 (ja) 1970-04-30

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