发明名称 |
Free-form optical surface measuring apparatus and method |
摘要 |
A surface measuring apparatus for measuring a surface shape of an element includes a measurement frame having a mount for mounting the element to be measured, a stage including a rotatable device, the stage being movable in at least a first direction relative to the measurement frame, and a contactless distance measurement device for measuring in the first direction a distance between the measurement frame and a predetermined measurement surface provided on the rotatable device. The apparatus further comprises a second distance measurement device for measuring in a second direction a second distance between the device and a selected position on a surface of an element mounted relative to the measurement frame and a rotation measurement device for measuring an angle of rotation between the first and second direction. In this way, aspheric or free-form surfaces of optical elements can be measured easily in closed loop without introducing abbel-errors.
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申请公布号 |
US7492468(B2) |
申请公布日期 |
2009.02.17 |
申请号 |
US20060573763 |
申请日期 |
2006.06.29 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK |
发明人 |
HENSELMANS RENS;ROSIELLE PETRUS CAROLUS JOHANNES NICOLAAS |
分类号 |
G01B11/02;G01B9/02;G01B21/04;G01B21/20 |
主分类号 |
G01B11/02 |
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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