发明名称 |
POLYCRYSTALLINE DIAMOND ELEMENTS HAVING CONVEX SURFACES ; METHOD OF CUTTING A ROTATIONAL SYMMETRICAL SURFACE OF A DIAMOND ELEMENT USING A LASER ; METHOD OF POLISHING A SPHERICAL SURFACE OF A POLYCRYSTALLINE OR COATED DIAMOND ELEMENT |
摘要 |
<p>A diamond element (10) having a convex surface is disclosed, the convex surface including a spherical segment for which the maximum peak to valley deviation from a perfect spherical surface is less than about 5 mum. The diamond element (10) may be a solid polycrystalline diamond material and/or may comprise base material which is coated with diamond. Alternatively or in addition, the RMS deviation from a perfect spherical surface may be less than about 500 nm, or the RMS roughness less than about 30 nm. A diamond element (10) with a radius of curvature less than about 20 mm is also disclosed. In one aspect a diamond element (10) having a conical half-angle greater than about 10° is described. Diamond elements (10) of this type are intended for use as metrology tips.</p> |
申请公布号 |
EP2121236(B1) |
申请公布日期 |
2012.08.15 |
申请号 |
EP20080709899 |
申请日期 |
2008.01.18 |
申请人 |
ELEMENT SIX LIMITED |
发明人 |
SCARSBROOK, GEOFFREY ALAN;MOLLART, TIMOTHY PETER |
分类号 |
B23K26/38;B23K26/00;B23K26/08;B23K26/40;B23K101/20;B24B9/16;B24B13/02;G01B1/00;G01B5/012;G01B5/016 |
主分类号 |
B23K26/38 |
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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