发明名称 |
Light control device, method for driving same and pickup device using the light control device |
摘要 |
A light control device comprises a liquid crystal cell 12, and a pulse control unit 62 or 64 wherein when a transmittance of light transmitted from said liquid crystal element is changed from an actual light transmittance to an intended light transmittance, the pulse control unit is able to insert beforehand a drive pulse for control corresponding to a minimum light transmittance or a maximum light transmittance, at least, prior to application of a drive pulse corresponding to the intended light transmittance. A method of driving the light control device is also described wherein the light control device is driven by use of the drive pulse for control, along with a pickup device wherein the light control device is arranged in a light path of a pickup system.
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申请公布号 |
US6720742(B2) |
申请公布日期 |
2004.04.13 |
申请号 |
US20010974565 |
申请日期 |
2001.10.10 |
申请人 |
YANAGIDA TOSHIHARU;UDAKA TORU;KAWABATA MASARU;TANAKA KAZUHIRO |
发明人 |
YANAGIDA TOSHIHARU;UDAKA TORU;KAWABATA MASARU;TANAKA KAZUHIRO |
分类号 |
G02F1/13;G02F1/133;G02F1/139;H04N5/238;(IPC1-7):G05F1/00;H01T13/56 |
主分类号 |
G02F1/13 |
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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