GB1239075A - - Google Patents

Info

Publication number
GB1239075A
GB1239075A GB1239075DA GB1239075A GB 1239075 A GB1239075 A GB 1239075A GB 1239075D A GB1239075D A GB 1239075DA GB 1239075 A GB1239075 A GB 1239075A
Authority
GB
United Kingdom
Prior art keywords
pyran
spiro
mol
layer
filter
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)
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 filed Critical
Publication of GB1239075A publication Critical patent/GB1239075A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Laminated Bodies (AREA)
  • Eyeglasses (AREA)
GB1239075D 1967-07-12 1968-07-11 Expired GB1239075A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR114063A FR1542562A (fr) 1967-07-12 1967-07-12 Procédé pour la protection de couches de substances photochromiques

Publications (1)

Publication Number Publication Date
GB1239075A true GB1239075A (enExample) 1971-07-14

Family

ID=8634997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239075D Expired GB1239075A (enExample) 1967-07-12 1968-07-11

Country Status (6)

Country Link
JP (1) JPS4817892B1 (enExample)
BE (1) BE717947A (enExample)
DE (1) DE1772846A1 (enExample)
FR (1) FR1542562A (enExample)
GB (1) GB1239075A (enExample)
NL (1) NL6809143A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284485A (en) * 1982-12-01 1995-06-07 Secr Defence Improvements in or relating to surveillance apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3532780A1 (de) * 1985-09-13 1987-03-26 Maximilian F Prof Dr I Mutzhas Strahlenschutzfilter
DE4127810C2 (de) * 1991-08-22 1997-04-24 Rodenstock Optik G Optisch transparentes photochromes Kunststoffmaterial

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284485A (en) * 1982-12-01 1995-06-07 Secr Defence Improvements in or relating to surveillance apparatus
GB2284485B (en) * 1982-12-01 1995-11-08 Secr Defence Improvements in or relating to surveillance apparatus

Also Published As

Publication number Publication date
BE717947A (enExample) 1969-01-13
FR1542562A (fr) 1968-10-18
DE1772846A1 (de) 1971-06-09
JPS4817892B1 (enExample) 1973-06-01
NL6809143A (enExample) 1969-01-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees