FR990723A - Fabrication d'éléments optiques opaques - Google Patents

Fabrication d'éléments optiques opaques

Info

Publication number
FR990723A
FR990723A FR990723DA FR990723A FR 990723 A FR990723 A FR 990723A FR 990723D A FR990723D A FR 990723DA FR 990723 A FR990723 A FR 990723A
Authority
FR
France
Prior art keywords
manufacture
optical elements
opaque optical
opaque
elements
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of FR990723A publication Critical patent/FR990723A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR990723D 1946-07-09 1947-08-18 Fabrication d'éléments optiques opaques Expired FR990723A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB990723X 1946-07-09

Publications (1)

Publication Number Publication Date
FR990723A true FR990723A (fr) 1951-09-25

Family

ID=10850593

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990723D Expired FR990723A (fr) 1946-07-09 1947-08-18 Fabrication d'éléments optiques opaques

Country Status (1)

Country Link
FR (1) FR990723A (fr)

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