FR772932A - Glass substitute, especially for optical lenses - Google Patents

Glass substitute, especially for optical lenses

Info

Publication number
FR772932A
FR772932A FR772932DA FR772932A FR 772932 A FR772932 A FR 772932A FR 772932D A FR772932D A FR 772932DA FR 772932 A FR772932 A FR 772932A
Authority
FR
France
Prior art keywords
optical lenses
glass substitute
substitute
glass
lenses
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.)
Roehm and Haas GmbH
Original Assignee
Roehm and Haas GmbH
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 Roehm and Haas GmbH filed Critical Roehm and Haas GmbH
Application granted granted Critical
Publication of FR772932A publication Critical patent/FR772932A/en
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
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR772932D 1933-05-31 1934-05-07 Glass substitute, especially for optical lenses Expired FR772932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE772932X 1933-05-31

Publications (1)

Publication Number Publication Date
FR772932A true FR772932A (en) 1934-11-08

Family

ID=6682881

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772932D Expired FR772932A (en) 1933-05-31 1934-05-07 Glass substitute, especially for optical lenses

Country Status (1)

Country Link
FR (1) FR772932A (en)

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