To provide a method of evaluating scratch resistance of a spectacle lens, which is suitable for an actual use state, and a spectacle lens scratch resistance evaluation device for use in the same.
The scratch resistance evaluation method for evaluating scratch resistance of a spectacle lens L having a surface film includes the steps of: bringing a diamond needle 113 having a spherical tip and having a tip curvature radius of 1 μm to 1 mm into contact with the spectacle lens and linearly relatively moving the diamond needle; and evaluating the scratch resistance of the surface film in accordance with an influence of the linear relative movement upon the spectacle lens. The spectacle lens scratch resistance evaluation device includes: a contact load variable arm 11 having a diamond needle at its tip; a stage 12 to which a spectacle lens with which the diamond needle is to be brought into contact is fixed; moving means which linearly relatively moves the contact load variable arm and the stage; and a guide member 21 which is brought into contact with the contact load variable arm by the linear relative movement to isolate the diamond needle and the spectacle lens from each other.
HARADA TAKASHI
| JP2010164311A | 2010-07-29 | |||
| JP2000028506A | 2000-01-28 | |||
| JP2003215011A | 2003-07-30 | |||
| JP2010066094A | 2010-03-25 | |||
| JP2010127766A | 2010-06-10 | |||
| JP2005522690A | 2005-07-28 | |||
| JP2002202244A | 2002-07-19 |
| US20020062678A1 | 2002-05-30 | |||
| US20110314894A1 | 2011-12-29 |
Kenichi Hirasawa
Koichiro Yamashita
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