FR572314A - Perfectionnements aux lentilles - Google Patents

Perfectionnements aux lentilles

Info

Publication number
FR572314A
FR572314A FR572314DA FR572314A FR 572314 A FR572314 A FR 572314A FR 572314D A FR572314D A FR 572314DA FR 572314 A FR572314 A FR 572314A
Authority
FR
France
Prior art keywords
lentil
enhancements
lentil enhancements
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 des Lampes
Original Assignee
Compagnie des Lampes
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 des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR572314A publication Critical patent/FR572314A/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR572314D 1922-10-07 1923-10-03 Perfectionnements aux lentilles Expired FR572314A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US572314XA 1922-10-07 1922-10-07

Publications (1)

Publication Number Publication Date
FR572314A true FR572314A (fr) 1924-06-04

Family

ID=22009304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR572314D Expired FR572314A (fr) 1922-10-07 1923-10-03 Perfectionnements aux lentilles

Country Status (1)

Country Link
FR (1) FR572314A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101011B (de) * 1955-02-07 1961-03-02 Zeiss Ikon Ag Optische Einrichtung fuer Projektionszwecke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101011B (de) * 1955-02-07 1961-03-02 Zeiss Ikon Ag Optische Einrichtung fuer Projektionszwecke

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