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FR903070A - Focusing device for enlargement and reduction devices - Google Patents

Focusing device for enlargement and reduction devices

Info

Publication number
FR903070A
FR903070A FR903070DA FR903070A FR 903070 A FR903070 A FR 903070A FR 903070D A FR903070D A FR 903070DA FR 903070 A FR903070 A FR 903070A
Authority
FR
France
Prior art keywords
enlargement
focusing device
reduction devices
reduction
devices
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
Other languages
French (fr)
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon 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 Zeiss Ikon AG filed Critical Zeiss Ikon AG
Application granted granted Critical
Publication of FR903070A publication Critical patent/FR903070A/en
Expired 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
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G03B27/36—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR903070D 1943-03-25 1944-03-28 Focusing device for enlargement and reduction devices Expired FR903070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE903070X 1943-03-25

Publications (1)

Publication Number Publication Date
FR903070A true FR903070A (en) 1945-09-24

Family

ID=6861309

Family Applications (1)

Application Number Title Priority Date Filing Date
FR903070D Expired FR903070A (en) 1943-03-25 1944-03-28 Focusing device for enlargement and reduction devices

Country Status (1)

Country Link
FR (1) FR903070A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373802A1 (en) * 1976-12-08 1978-07-07 Ibm METHOD AND DEVICE FOR ADJUSTING A SINGLE FOCUS LENS IN A CONTINUOUSLY VARIABLE GRANDING OPTICAL SYSTEM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2373802A1 (en) * 1976-12-08 1978-07-07 Ibm METHOD AND DEVICE FOR ADJUSTING A SINGLE FOCUS LENS IN A CONTINUOUSLY VARIABLE GRANDING OPTICAL SYSTEM

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