FR2454114A1 - Procede de fabrication d'une plaque de verre laissant passer la lumiere dans certaines directions et l'arretant dans d'autres - Google Patents

Procede de fabrication d'une plaque de verre laissant passer la lumiere dans certaines directions et l'arretant dans d'autres

Info

Publication number
FR2454114A1
FR2454114A1 FR8008056A FR8008056A FR2454114A1 FR 2454114 A1 FR2454114 A1 FR 2454114A1 FR 8008056 A FR8008056 A FR 8008056A FR 8008056 A FR8008056 A FR 8008056A FR 2454114 A1 FR2454114 A1 FR 2454114A1
Authority
FR
France
Prior art keywords
plate
glass
manufacturing
stopping
directions
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.)
Withdrawn
Application number
FR8008056A
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.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and Gen
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 Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Publication of FR2454114A1 publication Critical patent/FR2454114A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Glass Compositions (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PROCEDE DE FABRICATION D'UNE PLAQUE DE VERRE QUI EST TRANSPARENTE DANS AU MOINS UNE DIRECTION ET OPAQUE DANS AU MOINS UNE AUTRE DIRECTION. A PARTIR DU MELANGE AYANT LA COMPOSITION SUIVANTE (EN POIDS): SIO: 78,7; BO: 0,2; ALO: 4,2; LIO: 9,5; NAO: 1,7; KO: 4,0; ZNO: 1,0; AGCL: 0,2; CEO: 0,03; SBO: 0,5; ON PREPARE PAR FUSION A DES TEMPERATURES D'ENVIRON 1500C UN VERRE PHOTOSENSIBLE AVEC LEQUEL ON FABRIQUE UNE PLAQUE 53 DE 2 A 3MM D'EPAISSEUR D. ON RECOUVRE CETTE PLAQUE D'UN MASQUE 52 INTERROMPU DE MINCES BANDES B EQUIDISTANTES (DISTANCE C), ET ON L'IRRADIE AVEC UN FAISCEAU 51 DE LUMIERE ULTRAVIOLETTE, AUSSI PARALLELE QUE POSSIBLE, EMANANT D'UNE LAMPE A VAPEUR DE MERCURE A HAUTE PRESSION. PAR LE TRAITEMENT THERMIQUE SUBSEQUENT LES BANDES IRRADIEES SONT TRANSFORMEES EN VITROCERAMIQUE. APPLICATION POUR ELEMENTS ANTIREFLEXION ET ANTIEBLOUISSEMENT, SURTOUT POUR DISPOSITIFS D'AFFICHAGE A CRISTAUX LIQUIDES.
FR8008056A 1979-04-11 1980-04-10 Procede de fabrication d'une plaque de verre laissant passer la lumiere dans certaines directions et l'arretant dans d'autres Withdrawn FR2454114A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792914682 DE2914682C3 (de) 1979-04-11 1979-04-11 Verfahren zur Herstellung einer als Lichtblende wirkenden Glasplatte und nach diesem Verfahren hergestellte Glasplatte

Publications (1)

Publication Number Publication Date
FR2454114A1 true FR2454114A1 (fr) 1980-11-07

Family

ID=6068076

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8008056A Withdrawn FR2454114A1 (fr) 1979-04-11 1980-04-10 Procede de fabrication d'une plaque de verre laissant passer la lumiere dans certaines directions et l'arretant dans d'autres

Country Status (4)

Country Link
JP (1) JPS55140736A (fr)
DE (1) DE2914682C3 (fr)
FR (1) FR2454114A1 (fr)
GB (1) GB2047912A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0658780A1 (fr) * 1993-12-01 1995-06-21 Raimondi, Enrico Filtre directionnel pour appareil d'éclairage et procédé de fabrication

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3127247A1 (de) * 1981-07-10 1983-01-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum herstellen eines jalousiefilters und vorrichtung zur durchfuehrung des verfahrens
DE102013217709A1 (de) * 2013-09-05 2015-03-05 Carl Zeiss Microscopy Gmbh Beleuchtungsvorrichtung und digitaler Profilprojektor
DE102020205437B3 (de) 2020-04-29 2021-07-01 Continental Automotive Gmbh Head-Up-Display mit Lamellenelement sowie Verfahren zur Herstellung eines entsprechenden Lamellenelements
GB2622102A (en) * 2022-09-05 2024-03-06 Envisics Ltd Light control film
GB2622103A (en) * 2022-09-05 2024-03-06 Envisics Ltd Light control film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808532A1 (de) * 1967-11-14 1969-08-07 Minnesota Mining & Mfg Staenderprojektor mit Blendungsschutzschirm
GB1407251A (en) * 1971-04-20 1975-09-24 Matsushita Electric Ind Co Ltd Method of making a colour strip filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808532A1 (de) * 1967-11-14 1969-08-07 Minnesota Mining & Mfg Staenderprojektor mit Blendungsschutzschirm
GB1407251A (en) * 1971-04-20 1975-09-24 Matsushita Electric Ind Co Ltd Method of making a colour strip filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0658780A1 (fr) * 1993-12-01 1995-06-21 Raimondi, Enrico Filtre directionnel pour appareil d'éclairage et procédé de fabrication

Also Published As

Publication number Publication date
JPS55140736A (en) 1980-11-04
DE2914682A1 (de) 1981-03-26
GB2047912A (en) 1980-12-03
DE2914682B2 (de) 1981-08-13
DE2914682C3 (de) 1982-05-13

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Legal Events

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