41.
    发明专利
    未知

    公开(公告)号:AT250097T

    公开(公告)日:2003-10-15

    申请号:AT00956600

    申请日:2000-08-02

    Applicant: ESSILOR INT

    Abstract: The invention concerns a method comprising the steps of grinding, fine grinding, and polishing a surface of an optical article made of transparent thermoplastic material, one of the steps of fine grinding or polishing consisting of treating the surface with a solvent or a mixture of solvents. The invention is applicable to lenses for spectacles.

    PROCEDE D'OBTENTION D'UN LATEX PHOTOCHROMIQUE STABILISE, LATEX OBTENU ET APPLICATION A L'OPTIQUE OPHTALMIQUE

    公开(公告)号:CA2433984A1

    公开(公告)日:2002-07-18

    申请号:CA2433984

    申请日:2002-01-11

    Applicant: ESSILOR INT

    Abstract: Le procédé d'obtention de latex photochromique comprend la polymérisation en émulsion aqueuse d'un mélange polymérisable initial, comprenant un ou plusieurs monomère(s) polymérisable(s) par voie radicalaire et un ou plusieu rs composé(s) photochromique(s) et l'addition au mélange initial, au cours de l a polymérisation ou au latex final d'au moins un agent de stabilisation des propriétés photochromiques choisis parmi les composés du cyclopentène, du cyclohexène, du cycloheptène, du cyclooctène et les composés à insaturation éthyléniques, comportant, en position a par rapport à l'insaturation éthylénique, un atome de carbone portant un groupe hydroxy libre. Applicatio n à la fabrication de films photochromiques.

    45.
    发明专利
    未知

    公开(公告)号:DE69502757T2

    公开(公告)日:1998-12-10

    申请号:DE69502757

    申请日:1995-03-28

    Applicant: ESSILOR INT

    Abstract: A mould for prodn. of optical lenses partic. for spectacles consists of two mould shells (10A, 10B) around which is established an annual sealing sleeve (14) defining together the required mould cavity (15). The sealing sleeve (14) is made of synthetic heat shrinkable material which by heat application is constructed over the two mould shells. Initially the sealing sleeve extends over and beyond the two shells so that where shrunk in position it is driven annularly between the shells (21) in the form of an inverted `U' so locating them axially. Also claimed are lenses formed from such a mould.

    46.
    发明专利
    未知

    公开(公告)号:DE69502197T2

    公开(公告)日:1998-12-03

    申请号:DE69502197

    申请日:1995-06-20

    Applicant: ESSILOR INT

    Abstract: PCT No. PCT/FR95/00812 Sec. 371 Date May 7, 1997 Sec. 102(e) Date May 7, 1997 PCT Filed Jun. 20, 1995 PCT Pub. No. WO96/00403 PCT Pub. Date Jan. 4, 1996An ophthalmic lens consisting of a substrate made of organic glass, of an abrasion-resistant coating, of a layer of impact-resistant primer and of an inorganic antireflective coating, wherein the surface of the said substrate is covered with the abrasion-resistant coating and in that the impact-resistant primer layer is inserted between the said abrasion-resistant layer and the anti-reflective coating, wherein the abrasion-resistant coating comprises a hydrolyzate or a mixture of hydrolyzates of a silane compound of formula: in which: R1 denotes an organic group containing an epoxy group; R2 is a hydrocarbon radical which has 1 or 2 carbon atoms; and R3 is a hydrocarbon group which has from 1 to 4 carbon atoms, and a is 0 or 1 in value.

    47.
    发明专利
    未知

    公开(公告)号:DE69502757D1

    公开(公告)日:1998-07-09

    申请号:DE69502757

    申请日:1995-03-28

    Applicant: ESSILOR INT

    Abstract: A mould for prodn. of optical lenses partic. for spectacles consists of two mould shells (10A, 10B) around which is established an annual sealing sleeve (14) defining together the required mould cavity (15). The sealing sleeve (14) is made of synthetic heat shrinkable material which by heat application is constructed over the two mould shells. Initially the sealing sleeve extends over and beyond the two shells so that where shrunk in position it is driven annularly between the shells (21) in the form of an inverted `U' so locating them axially. Also claimed are lenses formed from such a mould.

    48.
    发明专利
    未知

    公开(公告)号:ES2116092T3

    公开(公告)日:1998-07-01

    申请号:ES95923413

    申请日:1995-06-20

    Applicant: ESSILOR INT

    Abstract: PCT No. PCT/FR95/00812 Sec. 371 Date May 7, 1997 Sec. 102(e) Date May 7, 1997 PCT Filed Jun. 20, 1995 PCT Pub. No. WO96/00403 PCT Pub. Date Jan. 4, 1996An ophthalmic lens consisting of a substrate made of organic glass, of an abrasion-resistant coating, of a layer of impact-resistant primer and of an inorganic antireflective coating, wherein the surface of the said substrate is covered with the abrasion-resistant coating and in that the impact-resistant primer layer is inserted between the said abrasion-resistant layer and the anti-reflective coating, wherein the abrasion-resistant coating comprises a hydrolyzate or a mixture of hydrolyzates of a silane compound of formula: in which: R1 denotes an organic group containing an epoxy group; R2 is a hydrocarbon radical which has 1 or 2 carbon atoms; and R3 is a hydrocarbon group which has from 1 to 4 carbon atoms, and a is 0 or 1 in value.

    49.
    发明专利
    未知

    公开(公告)号:DE69502197D1

    公开(公告)日:1998-05-28

    申请号:DE69502197

    申请日:1995-06-20

    Applicant: ESSILOR INT

    Abstract: PCT No. PCT/FR95/00812 Sec. 371 Date May 7, 1997 Sec. 102(e) Date May 7, 1997 PCT Filed Jun. 20, 1995 PCT Pub. No. WO96/00403 PCT Pub. Date Jan. 4, 1996An ophthalmic lens consisting of a substrate made of organic glass, of an abrasion-resistant coating, of a layer of impact-resistant primer and of an inorganic antireflective coating, wherein the surface of the said substrate is covered with the abrasion-resistant coating and in that the impact-resistant primer layer is inserted between the said abrasion-resistant layer and the anti-reflective coating, wherein the abrasion-resistant coating comprises a hydrolyzate or a mixture of hydrolyzates of a silane compound of formula: in which: R1 denotes an organic group containing an epoxy group; R2 is a hydrocarbon radical which has 1 or 2 carbon atoms; and R3 is a hydrocarbon group which has from 1 to 4 carbon atoms, and a is 0 or 1 in value.

Patent Agency Ranking