AT309207B - Gerät zur Bestimmung und Eistellung der Belichtungszeit in einem photographischen Vergrößerungsapparat - Google Patents

Gerät zur Bestimmung und Eistellung der Belichtungszeit in einem photographischen Vergrößerungsapparat

Info

Publication number
AT309207B
AT309207B AT770569A AT770569A AT309207B AT 309207 B AT309207 B AT 309207B AT 770569 A AT770569 A AT 770569A AT 770569 A AT770569 A AT 770569A AT 309207 B AT309207 B AT 309207B
Authority
AT
Austria
Prior art keywords
determining
setting
exposure time
photographic enlarger
enlarger
Prior art date
Application number
AT770569A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of AT309207B publication Critical patent/AT309207B/de

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)
  • Control Of Exposure In Printing And Copying (AREA)
  • Adjustable Resistors (AREA)
  • Switches With Compound Operations (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
AT770569A 1968-08-14 1969-08-11 Gerät zur Bestimmung und Eistellung der Belichtungszeit in einem photographischen Vergrößerungsapparat AT309207B (de)

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
AT309207B true AT309207B (de) 1973-08-10

Family

ID=19804365

Family Applications (1)

Application Number Title Priority Date Filing Date
AT770569A AT309207B (de) 1968-08-14 1969-08-11 Gerät zur Bestimmung und Eistellung der Belichtungszeit in einem photographischen Vergrößerungsapparat

Country Status (9)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2188155B1 (de) * 1972-06-06 1974-12-27 Matore Georges
US3874793A (en) * 1973-04-09 1975-04-01 Philip D Nielsen Electronic print exposure analyzer
JPS5077148U (de) * 1973-11-14 1975-07-04
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

Also Published As

Publication number Publication date
FR2015647A1 (de) 1970-04-30
US3647297A (en) 1972-03-07
SE345021B (de) 1972-05-08
GB1270009A (en) 1972-04-12
NL6811524A (de) 1970-02-17
NL155104B (nl) 1977-11-15
BE737385A (de) 1970-02-12
JPS493841B1 (de) 1974-01-29
DE1939995B2 (de) 1976-03-04
CH534370A (de) 1973-02-28
DE1939995A1 (de) 1970-03-12

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee