FR892175A - Daylight reading or projection device - Google Patents

Daylight reading or projection device

Info

Publication number
FR892175A
FR892175A FR892175DA FR892175A FR 892175 A FR892175 A FR 892175A FR 892175D A FR892175D A FR 892175DA FR 892175 A FR892175 A FR 892175A
Authority
FR
France
Prior art keywords
projection device
daylight
reading
daylight reading
projection
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 FR892175A publication Critical patent/FR892175A/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR892175D 1943-03-12 1943-03-12 Daylight reading or projection device Expired FR892175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR892175T 1943-03-12

Publications (1)

Publication Number Publication Date
FR892175A true FR892175A (en) 1944-03-30

Family

ID=9389441

Family Applications (1)

Application Number Title Priority Date Filing Date
FR892175D Expired FR892175A (en) 1943-03-12 1943-03-12 Daylight reading or projection device

Country Status (1)

Country Link
FR (1) FR892175A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819648A (en) * 1955-12-14 1958-01-14 Cherouvrier Robert Ernest Apparatus for viewing, reading and projecting microfilms and like documents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819648A (en) * 1955-12-14 1958-01-14 Cherouvrier Robert Ernest Apparatus for viewing, reading and projecting microfilms and like documents

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