FR712920A - Improvements to optical devices - Google Patents

Improvements to optical devices

Info

Publication number
FR712920A
FR712920A FR712920DA FR712920A FR 712920 A FR712920 A FR 712920A FR 712920D A FR712920D A FR 712920DA FR 712920 A FR712920 A FR 712920A
Authority
FR
France
Prior art keywords
optical devices
optical
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.)
Guillaume & Cie P
Original Assignee
Guillaume & Cie P
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 Guillaume & Cie P filed Critical Guillaume & Cie P
Application granted granted Critical
Publication of FR712920A publication Critical patent/FR712920A/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
    • G03B3/02—Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR712920D 1931-03-09 1931-03-09 Improvements to optical devices Expired FR712920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR712920T 1931-03-09

Publications (1)

Publication Number Publication Date
FR712920A true FR712920A (en) 1931-10-15

Family

ID=9081669

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712920D Expired FR712920A (en) 1931-03-09 1931-03-09 Improvements to optical devices

Country Status (1)

Country Link
FR (1) FR712920A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975518C (en) * 1954-10-09 1961-12-14 Compur Werk Friedrich Deckel O Photographic camera
US4466019A (en) * 1981-03-25 1984-08-14 Sony Corporation Camera lens attachment mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975518C (en) * 1954-10-09 1961-12-14 Compur Werk Friedrich Deckel O Photographic camera
US4466019A (en) * 1981-03-25 1984-08-14 Sony Corporation Camera lens attachment mechanism

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