发明名称 |
Laser marking method, laser marking apparatus and optical element |
摘要 |
In a method for producing a permanent mark in an optical element which consists essentially of a material that is transparent in the visible spectral region, a marking region of the optical element is irradiated with laser radiation in order to generate local, near-surface material changes in such a way that a mark of prescribed shape and size is generated. The laser radiation has an operating wavelength λ from the wavelength region between 1.1 μm and 9.2 μm. A thulium-doped fiber laser is preferably used as laser radiation source. The operating wavelength is selected in dependence from the material of the optical element such that the material exhibits a partial absorption with a transmittance between 60% and 98%. The method can be used, in particular, to provide spectacle lenses, contact lenses or intraocular lenses with marks. |
申请公布号 |
US8115792(B2) |
申请公布日期 |
2012.02.14 |
申请号 |
US20090606642 |
申请日期 |
2009.10.27 |
申请人 |
PETSCH TINO;KEIPER BERND;ALBERT SVEN;HOECHE THOMAS;3D-MICROMAC AG |
发明人 |
PETSCH TINO;KEIPER BERND;ALBERT SVEN;HOECHE THOMAS |
分类号 |
B41M5/26;B23K26/00;G02B1/12;G02C7/02 |
主分类号 |
B41M5/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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