AT312418B - Vergrößerungsgerät mit optischem Kontrastangleich - Google Patents

Vergrößerungsgerät mit optischem Kontrastangleich

Info

Publication number
AT312418B
AT312418B AT735770A AT735770A AT312418B AT 312418 B AT312418 B AT 312418B AT 735770 A AT735770 A AT 735770A AT 735770 A AT735770 A AT 735770A AT 312418 B AT312418 B AT 312418B
Authority
AT
Austria
Prior art keywords
magnifier
contrast adjustment
optical contrast
optical
adjustment
Prior art date
Application number
AT735770A
Other languages
English (en)
Inventor
Josef Scheibel Ing
Original Assignee
Braun Ag
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 Braun Ag filed Critical Braun Ag
Application granted granted Critical
Publication of AT312418B publication Critical patent/AT312418B/de

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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
AT735770A 1969-08-16 1970-08-12 Vergrößerungsgerät mit optischem Kontrastangleich AT312418B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691941804 DE1941804A1 (de) 1969-08-16 1969-08-16 Vergroesserungsgeraet mit optischem Kontrastangleich

Publications (1)

Publication Number Publication Date
AT312418B true AT312418B (de) 1973-12-27

Family

ID=5743023

Family Applications (1)

Application Number Title Priority Date Filing Date
AT735770A AT312418B (de) 1969-08-16 1970-08-12 Vergrößerungsgerät mit optischem Kontrastangleich

Country Status (6)

Country Link
US (1) US3707327A (de)
JP (1) JPS494328B1 (de)
AT (1) AT312418B (de)
CH (1) CH511453A (de)
DE (1) DE1941804A1 (de)
FR (1) FR2057988A5 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH582365A5 (de) * 1975-03-24 1976-11-30 Alos Ag

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1633228A (en) * 1926-04-08 1927-06-21 Elwood C Rogers Photographic enlarger
US3227039A (en) * 1963-07-16 1966-01-04 Simmon Brothers Inc Density control for photographic enlargers

Also Published As

Publication number Publication date
DE1941804A1 (de) 1971-02-25
US3707327A (en) 1972-12-26
CH511453A (de) 1971-08-15
FR2057988A5 (de) 1971-05-21
JPS494328B1 (de) 1974-01-31

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Legal Events

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