FR947069A - Focusing device for photography and microphotography using invisible radiation - Google Patents

Focusing device for photography and microphotography using invisible radiation

Info

Publication number
FR947069A
FR947069A FR947069DA FR947069A FR 947069 A FR947069 A FR 947069A FR 947069D A FR947069D A FR 947069DA FR 947069 A FR947069 A FR 947069A
Authority
FR
France
Prior art keywords
microphotography
photography
focusing device
invisible radiation
invisible
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)
Inventor
Georges-Albert Boutry
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 filed Critical
Application granted granted Critical
Publication of FR947069A publication Critical patent/FR947069A/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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR947069D 1947-05-14 1947-05-14 Focusing device for photography and microphotography using invisible radiation Expired FR947069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR947069T 1947-05-14

Publications (1)

Publication Number Publication Date
FR947069A true FR947069A (en) 1949-06-22

Family

ID=9473275

Family Applications (1)

Application Number Title Priority Date Filing Date
FR947069D Expired FR947069A (en) 1947-05-14 1947-05-14 Focusing device for photography and microphotography using invisible radiation

Country Status (1)

Country Link
FR (1) FR947069A (en)

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