发明名称 |
Controllable optical lens |
摘要 |
A controllable electrowetting lens system has a feedback control loop for controlling the electrode arrangement drive signals to implement an autofocus function. The feedback control loop comprising an image analysis focus detection system and a variable gain element. The gain is adjusted based on the lens condition, for example as sensed by a capacitance sensing arrangement. The autofocus control loop can be optimized to the lens characteristics (because the lens characteristics change over time) and/or to external conditions such as temperature.
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申请公布号 |
US7612947(B2) |
申请公布日期 |
2009.11.03 |
申请号 |
US20050575783 |
申请日期 |
2005.09.28 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
HELWEGEN IVON F.;KUIPER STEIN;HENDRIKS BERNARDUS H. W. |
分类号 |
G02B1/06;G02B3/14;G02B7/36;G02B15/14;G02F1/03 |
主分类号 |
G02B1/06 |
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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