FR927024A - Perfectionnements aux appareils d'agrandissement photographique et aux lanternes de projection - Google Patents

Perfectionnements aux appareils d'agrandissement photographique et aux lanternes de projection

Info

Publication number
FR927024A
FR927024A FR927024DA FR927024A FR 927024 A FR927024 A FR 927024A FR 927024D A FR927024D A FR 927024DA FR 927024 A FR927024 A FR 927024A
Authority
FR
France
Prior art keywords
magnifiers
photographic
lanterns
projection
projection lanterns
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
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR927024A publication Critical patent/FR927024A/fr
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)
FR927024D 1945-05-18 1946-05-17 Perfectionnements aux appareils d'agrandissement photographique et aux lanternes de projection Expired FR927024A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US927024XA 1945-05-18 1945-05-18

Publications (1)

Publication Number Publication Date
FR927024A true FR927024A (fr) 1947-10-17

Family

ID=22234646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR927024D Expired FR927024A (fr) 1945-05-18 1946-05-17 Perfectionnements aux appareils d'agrandissement photographique et aux lanternes de projection

Country Status (1)

Country Link
FR (1) FR927024A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679784A (en) * 1951-05-16 1954-06-01 Simmon Brothers Inc Lantern slide projector having lenses of different focus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679784A (en) * 1951-05-16 1954-06-01 Simmon Brothers Inc Lantern slide projector having lenses of different focus

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