FR1024338A - Perfectionnement aux barrages lumineux - Google Patents

Perfectionnement aux barrages lumineux

Info

Publication number
FR1024338A
FR1024338A FR1024338DA FR1024338A FR 1024338 A FR1024338 A FR 1024338A FR 1024338D A FR1024338D A FR 1024338DA FR 1024338 A FR1024338 A FR 1024338A
Authority
FR
France
Prior art keywords
improvement
light barriers
barriers
light
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.)
Sagem SA
Original Assignee
Recherches et Etudes dOptique et de Sciences Connexes SA REOSC
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 Recherches et Etudes dOptique et de Sciences Connexes SA REOSC filed Critical Recherches et Etudes dOptique et de Sciences Connexes SA REOSC
Application granted granted Critical
Publication of FR1024338A publication Critical patent/FR1024338A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1024338D 1950-09-06 1950-09-06 Perfectionnement aux barrages lumineux Expired FR1024338A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1024338T 1950-09-06

Publications (1)

Publication Number Publication Date
FR1024338A true FR1024338A (fr) 1953-03-31

Family

ID=9578773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1024338D Expired FR1024338A (fr) 1950-09-06 1950-09-06 Perfectionnement aux barrages lumineux

Country Status (1)

Country Link
FR (1) FR1024338A (fr)

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