Lens for spectacles and method for forming lens for spectacles

Details Lens for spectacles and method for forming lens for spectacles Lens for spectacles and method for forming lens for spectacles

G - Physics

02

C

G02C 7/02 (2006.01) B24B 9/14 (2006.01) G02B 1/10 (2006.01) G02B 1/11 (2006.01) G02C 7/10 (2006.01)

Patent

CA 2599918

An oil-repellent coating layer (2) is provided on both surfaces of a lens material (1) comprising glass or a plastic. A fine particle layer (3), which contains at least one of fine particles of a metal oxide and fine particles of a fluoride being dispersed therein, is formed on the surface of the oil- repellent coating layer (2), and further a resin layer (4) comprising an organic compound is provided on the surface of the fine particle layer (3). The resin layer (4) exhibits good close attachment to a double-coated adhesive tape which is used when the lens is set onto an edger, which results in reducing the probability of the occurrence of deviation of axes during working.

La présente invention concerne une couche de revêtement oléophobe (2) qui est prévue sur les deux surfaces d~un matériau de lentille (1) comprenant du verre ou un plastique. Une couche de particules fines (3), qui contient au moins des particules fines d~un oxyde métallique et/ou des particules fines d~un fluorure dispersées dans celle-ci, est formée sur la surface de la couche de revêtement oléophobe (2), et en outre une couche de résine (4) comprenant un composé organique est prévue sur la surface de la couche de particules fines (3). La couche de résine (4) présente une fixation satisfaisante à un ruban adhésif double face qui est utilisé lorsque la lentille est placée sur une ponceuse de profil, ce qui entraîne une réduction de la probabilité de l~apparition de déviation des axes au cours de l~usinage.

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