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1. 发明授权

US07719657B2 Liquid crystal lens element and optical head device 有权
标题翻译：液晶透镜元件和光头装置
公开(公告)号：US07719657B2
公开(公告)日：2010-05-18
申请号：US11589088
申请日：2006-10-30
申请人： Yoshiharu Ooi , Yuzuru Tanabe , Hiromasa Sato , Takuji Nomura , Ryuichiro Shimizu
发明人： Yoshiharu Ooi , Yuzuru Tanabe , Hiromasa Sato , Takuji Nomura , Ryuichiro Shimizu
IPC分类号： G02F1/13
CPC分类号： G11B7/1378 , G02B3/08 , G02B13/14 , G02F1/133371 , G02F1/29 , G02F2001/294 , G11B2007/0006 , G11B2007/13722
摘要： The present application relates to a liquid crystal lens element and an optical head device, in particular order, to a liquid crystal lens capable of switching the focal length among a plurality of different focal lengths according to switching of applied voltage among a plurality of applied voltages, and an optical head device employing the liquid crystal lens, for writing and/or reading an information to/from an optical recording medium.
摘要翻译：本发明涉及一种液晶透镜元件和光学头装置，其特征在于能够根据多个施加电压之间的施加电压的切换来切换多个不同焦距中的焦距的液晶透镜以及使用该液晶透镜的光学头装置，用于向/从光记录介质写入和/或读取信息。

2. 发明申请

US20060280100A1 Liquid crystal lens element and optical head device 有权
标题翻译：液晶透镜元件和光头装置
公开(公告)号：US20060280100A1
公开(公告)日：2006-12-14
申请号：US11498076
申请日：2006-08-03
申请人： Yoshiharu Ooi , Hiromasa Sato , Ryuichiro Shimizu , Takuji Nomura , Yuzuru Tanabe , Mitsuo Oosawa
发明人： Yoshiharu Ooi , Hiromasa Sato , Ryuichiro Shimizu , Takuji Nomura , Yuzuru Tanabe , Mitsuo Oosawa
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G02F1/133526 , G02F1/29 , G02F2001/294 , G02F2203/18 , G11B7/1353 , G11B7/1369 , G11B7/1378 , G11B7/13925 , G11B2007/0006 , G11B2007/0013
摘要： A liquid crystal lens element having a lens function is provided, which is small sized without having moving part, and which can stably carry out correction of spherical aberration containing a power component corresponding to focal point change of incident light. A liquid crystal lens element which changes a focal length of light transmitted through a liquid crystal 16 according to the magnitude of the voltage applied to the liquid crystal 16 sandwiched between a pair of transparent substrates 11 and 12, which comprises transparent electrodes 13 and 14 provided on the respective transparent substrates 11 and 12 for applying a voltage for the liquid crystal 16, and a concave-convex portion 17 having a saw-tooth-shaped cross-sectional shape having a rotational symmetry about an optical axis and formed on one surface of the transparent electrode 13 with a transparent material, wherein at least concave portions of the concave-convex portion 17 are filled with the liquid crystal 16 so as to change the substantial refractive index of the liquid crystal 16 according to the magnitude of applied voltage.
摘要翻译：提供了具有透镜功能的液晶透镜元件，其尺寸小而不具有移动部分，并且可以稳定地执行包含对应于入射光的焦点变化的功率分量的球面像差的校正。一种液晶透镜元件，其根据施加到夹在包括透明电极13和14的一对透明基板11和12之间的液晶16的电压的大小而改变透射通过液晶16的光的焦距，该透明基板11和12包括透明电极13和14 在用于施加液晶16的电压的各个透明基板11和12上，以及具有围绕光轴旋转对称的锯齿状截面形状的凹凸部17，并形成在具有透明材料的透明电极13，其中凹凸部17的至少凹部被液晶16填充，以便根据施加电压的大小改变液晶16的实质折射率。

3. 发明申请

US20070146625A1 Liquid crystal lens element and optical head device 有权
标题翻译：液晶透镜元件和光头装置
公开(公告)号：US20070146625A1
公开(公告)日：2007-06-28
申请号：US11589088
申请日：2006-10-30
申请人： Yoshiharu Ooi , Yuzuru Tanabe , Hiromasa Sato , Takuji Nomura , Ryuichiro Shimizu
发明人： Yoshiharu Ooi , Yuzuru Tanabe , Hiromasa Sato , Takuji Nomura , Ryuichiro Shimizu
IPC分类号： G02F1/13
CPC分类号： G11B7/1378 , G02B3/08 , G02B13/14 , G02F1/133371 , G02F1/29 , G02F2001/294 , G11B2007/0006 , G11B2007/13722
摘要： A liquid crystal lens element is provided, which can realize a small sized element having no moving part, and which has a lens function of switching the focal length among multiple focal lengths of at least 3 types according to an applied voltage. A liquid crystal lens element 10 is provided, which comprises a pair of transparent substrates 11 and 12 and a liquid crystal layer sandwiched between these substrates, wherein focal lengths of light transmitted through the liquid crystal 16 is changed depending on a voltage applied to the liquid crystal 16, the liquid crystal lens element 10 has a Fresnel lens-shaped concave-convex portion 17 and a liquid crystal layer 16A, and configured so that the refractive index n of the liquid crystal layer 16A changes from a refractive index n1 at a time of no application to a refractive index n2 at a time of voltage application, a refractive index ns of the concave-convex portion 17 is a value between the refractive indexes n1 and n2 and satisfies a predetermined relation, and the maximum depth d of the concave-convex portion 17 satisfies a predetermined relation, the focal length can be switched by switching an applied voltage to the liquid crystal layer 16A under the predetermined conditions.
摘要翻译：提供一种液晶透镜元件，其可以实现不具有移动部分的小尺寸元件，并且具有根据施加的电压在至少3种类型的多个焦距之间切换焦距的透镜功能。提供了一种液晶透镜元件10，其包括一对透明基板11和12以及夹在这些基板之间的液晶层，其中透射通过液晶16的光的焦距根据施加到液体的电压而改变晶体16中，液晶透镜元件10具有菲涅耳透镜形状的凹凸部17和液晶层16A，构成为使液晶层16的折射率n从折射率n < 在施加电压时，在不施加折射率n <2的情况下，SUB> 1 _{1的折射率n _{部分17是折射率n 1和n 2之间的值，并且满足预定关系，并且凹凸部17的最大深度d满足预定关系，可以通过将施加的电压切换到l来切换焦距在预定条件下的iquid晶体层16A。}}

4. 发明授权

US07388822B2 Liquid crystal lens element and optical head device 有权
标题翻译：液晶透镜元件和光头装置
公开(公告)号：US07388822B2
公开(公告)日：2008-06-17
申请号：US11498076
申请日：2006-08-03
申请人： Yoshiharu Ooi , Hiromasa Sato , Ryuichiro Shimizu , Takuji Nomura , Yuzuru Tanabe , Mitsuo Oosawa
发明人： Yoshiharu Ooi , Hiromasa Sato , Ryuichiro Shimizu , Takuji Nomura , Yuzuru Tanabe , Mitsuo Oosawa
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G02F1/133526 , G02F1/29 , G02F2001/294 , G02F2203/18 , G11B7/1353 , G11B7/1369 , G11B7/1378 , G11B7/13925 , G11B2007/0006 , G11B2007/0013
摘要： A liquid crystal lens element having a lens function is provided, which is small sized without having moving part, and which can stably carry out correction of spherical aberration containing a power component corresponding to focal point change of incident light.A liquid crystal lens element which changes a focal length of light transmitted through a liquid crystal 16 according to the magnitude of the voltage applied to the liquid crystal 16 sandwiched between a pair of transparent substrates 11 and 12, which comprises transparent electrodes 13 and 14 provided on the respective transparent substrates 11 and 12 for applying a voltage for the liquid crystal 16, and a concave-convex portion 17 having a saw-tooth-shaped cross-sectional shape having a rotational symmetry about an optical axis and formed on one surface of the transparent electrode 13 with a transparent material, wherein at least concave portions of the concave-convex portion 17 are filled with the liquid crystal 16 so as to change the substantial refractive index of the liquid crystal 16 according to the magnitude of applied voltage.
摘要翻译：提供了具有透镜功能的液晶透镜元件，其尺寸小而不具有移动部分，并且可以稳定地执行包含对应于入射光的焦点变化的功率分量的球面像差的校正。一种液晶透镜元件，其根据施加到夹在包括透明电极13和14的一对透明基板11和12之间的液晶16的电压的大小而改变透射通过液晶16的光的焦距，该透明基板11和12包括透明电极13和14 在用于施加液晶16的电压的各个透明基板11和12上，以及具有围绕光轴旋转对称的锯齿状截面形状的凹凸部17，并形成在具有透明材料的透明电极13，其中凹凸部17的至少凹部被液晶16填充，以便根据施加电压的大小改变液晶16的实质折射率。

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