FR1301688A - Dispositifs cryptographiques optiques - Google Patents

Dispositifs cryptographiques optiques

Info

Publication number
FR1301688A
FR1301688A FR874106A FR874106A FR1301688A FR 1301688 A FR1301688 A FR 1301688A FR 874106 A FR874106 A FR 874106A FR 874106 A FR874106 A FR 874106A FR 1301688 A FR1301688 A FR 1301688A
Authority
FR
France
Prior art keywords
cryptographic devices
optical cryptographic
optical
devices
cryptographic
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
FR874106A
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.)
Bausch and Lomb Inc
Original Assignee
Bausch and Lomb Inc
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 Bausch and Lomb Inc filed Critical Bausch and Lomb Inc
Priority to FR874106A priority Critical patent/FR1301688A/fr
Application granted granted Critical
Publication of FR1301688A publication Critical patent/FR1301688A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/024—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies
    • G02B27/025—Viewing apparatus comprising a light source, e.g. for viewing photographic slides, X-ray transparancies and magnifying means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR874106A 1961-09-25 1961-09-25 Dispositifs cryptographiques optiques Expired FR1301688A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR874106A FR1301688A (fr) 1961-09-25 1961-09-25 Dispositifs cryptographiques optiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR874106A FR1301688A (fr) 1961-09-25 1961-09-25 Dispositifs cryptographiques optiques

Publications (1)

Publication Number Publication Date
FR1301688A true FR1301688A (fr) 1962-08-17

Family

ID=8763452

Family Applications (1)

Application Number Title Priority Date Filing Date
FR874106A Expired FR1301688A (fr) 1961-09-25 1961-09-25 Dispositifs cryptographiques optiques

Country Status (1)

Country Link
FR (1) FR1301688A (fr)

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