发明名称 |
SINGLE CRYSTAL DIAMOND ELEMENTS HAVING CONVEX SURFACES AND METHODS OF ITS FABRICATION |
摘要 |
A single crystal diamond element 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. 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 single crystal diamond element with a radius of curvature less than about 20 mm is also disclosed. In one aspect a single crystal diamond element having a conical half-angle greater than about 10° is described. The invention also provides a method for forming a rotationally symmetrical surface on a single crystal diamond element, comprising rotating the element about a first axis, applying a laser beam to the element in a direction perpendicular to the first axis, and translating the laser beam in two dimensions in a plane perpendicular to the direction of the beam. If the two-dimensional path follows the arc of a circle a spherical surface may be formed. The invention also provides improving a spherical surface on a single crystal diamond element by pressing a rapidly rotating cup onto a slowly rotating element. The element may be a lens, in particular a solid immersion lens.
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申请公布号 |
US2009022951(A1) |
申请公布日期 |
2009.01.22 |
申请号 |
US20060995067 |
申请日期 |
2006.07.07 |
申请人 |
NELISSEN WILHELMUS GERARDA MARIA;GODFRIED HERMAN PHILIP;HOUWMAN EVERT PIETER;KRIELE PAULUS ADRIANUS CORNELIS;LAMERS JOHANNES CORNELIS;PELS GERRIT JAN;VAN OERLE BARTHOLOMEUS MATHIAS;SPAAY PAULUS GERARDUS HENDRICUS;MCCLYMONT MARK ROBIN;WORT CHRISTOPHER JOHN HOWARD;SCARSBROOK GEOFFREY ALAN |
发明人 |
NELISSEN WILHELMUS GERARDA MARIA;GODFRIED HERMAN PHILIP;HOUWMAN EVERT PIETER;KRIELE PAULUS ADRIANUS CORNELIS;LAMERS JOHANNES CORNELIS;PELS GERRIT JAN;VAN OERLE BARTHOLOMEUS MATHIAS;SPAAY PAULUS GERARDUS HENDRICUS MARIA;MCCLYMONT MARK ROBIN;WORT CHRISTOPHER JOHN HOWARD;SCARSBROOK GEOFFREY ALAN |
分类号 |
G02B1/02;B23K26/38;B24B1/00;C01B31/06;G02B3/00;G11B7/00 |
主分类号 |
G02B1/02 |
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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