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    Optical attenuator and optical head device
    1.
    发明申请
    Optical attenuator and optical head device 审中-公开

    公开(公告)号：US20060007385A1

    公开(公告)日：2006-01-12

    申请号：US11219841

    申请日：2005-09-07

    申请人： Koichi Murata ,  Mitsuo Osawa

    发明人： Koichi Murata ,  Mitsuo Osawa

    IPC分类号： C09K19/02

    CPC分类号： G11B7/1353 ,  G02F1/1393 ,  G11B7/1356 ,  G11B7/1369 ,  G11B7/1381

    摘要： The present invention provides an optical attenuator reducing variations in optical attenuation amount in response to temperature change, and an optical head device having properties excellent in recording and reproducing an information. An optical attenuator comprising a liquid crystal element having spirally arranged molecules in which a liquid crystal layer 107 is sandwiched between transparent electrodes 103 and 104, and a polarizing beam splitter 110 whose transmittance is changed depending on a polarization state, wherein the ordinary refractive index (no) and the extraordinary refractive index (ne) of liquid crystal, the angle (θpt) of liquid crystal molecules against the transparent substrate surfaces, the thickness (d) of the liquid crystal layer 107 and the wavelength (λ) of incident light, constituent elements are configured so that the value A satisfies the range of from 0.5 to 1.5 in the conditional formula defined by the formula (1): A = Δ ⁢   ⁢ n · d λ ( 1 ) wherein Δn=no·ne/√{square root over (no2·cos2(θpt)+ne2·sin2(θpt))}−no

    Phonograph record player
    4.
    发明授权
    Phonograph record player 失效

    公开(公告)号：US4113264A

    公开(公告)日：1978-09-12

    申请号：US798313

    申请日：1977-05-19

    申请人： Toru Sato ,  Shunji Tokumitsu ,  Masaaki Sakai ,  Kazuhiko Kawasaki ,  Kenichiro Kaimori ,  Mitsuo Osawa

    发明人： Toru Sato ,  Shunji Tokumitsu ,  Masaaki Sakai ,  Kazuhiko Kawasaki ,  Kenichiro Kaimori ,  Mitsuo Osawa

    IPC分类号： G11B3/095 ,  G11B19/20 ,  G11B17/16

    CPC分类号： G11B3/095 ,  G11B19/20 ,  G11B3/0955

    摘要： In a phonograph record player having a tone arm carrying a pickup with a stylus to track the groove of a phonograph record on a turntable during a play operation and being mounted for lead-in movement from an elevated rest position outside the turntable perimeter to a selected set-down position of the stylus on the record for commencement of a play operation and for return or lead-out movement back to the rest position on termination of a play operation, a control mechanism is provided with a single mode selecting member or slide which is manually movable to positions for selecting stop, manual and repeat modes of operation, respectively, of the record player. More particularly, the manual mode selecting position of the slide and positions of the latter for selecting repeat modes of operation providing progressively increasing numbers of repeated play operations are arranged in order in the direction away from the stop mode position of the slide, and for each play operation of the record player the mode selecting slide is displaced in a step-wise manner toward its stop mode position. Further, at an extreme position of the mode selecting slide remote from the stop mode position, successive play operations are obtained without corresponding step-wise displacements of the slide so that the play operations are repeated indefinitely.

    Near-infrared-absorbing particles, process for their production, dispersion, and article thereof
    5.
    发明授权
    Near-infrared-absorbing particles, process for their production, dispersion, and article thereof 有权
    近红外吸收颗粒，其制备方法，分散体及其制品

    公开(公告)号：US08642174B2

    公开(公告)日：2014-02-04

    申请号：US13432254

    申请日：2012-03-28

    申请人： Wakako Ito ,  Keisuke Abe ,  Makoto Hasegawa ,  Mitsuo Osawa

    发明人： Wakako Ito ,  Keisuke Abe ,  Makoto Hasegawa ,  Mitsuo Osawa

    IPC分类号： B32B5/16 ,  B02C19/00 ,  G02B5/22

    CPC分类号： C09D5/32 ,  B82Y30/00 ,  C01B25/45 ,  C01P2002/60 ,  C01P2004/50 ,  C01P2004/64 ,  C08K3/32 ,  C09D7/61 ,  C09D7/67 ,  C09D7/68 ,  G02B5/206 ,  G02B5/208 ,  G02B5/22 ,  Y10T428/256 ,  Y10T428/2982

    摘要： To provide near-infrared-absorbing particles which have a high transmittance in the visible light region and a low transmittance in the near infrared region and which, when incorporated, can give a near-infrared-absorbing coating film wherein the transmittance sharply changes in the wavelength range of from 630 to 700 nm; a process for their production; and their dispersion. Near-infrared-absorbing particles consisting essentially of crystallites of A1/nCuPO4 and having a number average aggregated particle size is from 20 to 200 nm, wherein A is at least one member selected from the group consisting of alkali metals (Li, Na, K, Rb and Cs), alkaline earth metals (Mg, Ca, Sr and Ba) and NH4, and n is 1 when A is an alkali metal or NH4, or 2 when A is an alkaline earth metal.

    摘要翻译： 为了提供在可见光区域具有高透射率和近红外区域的低透射率的近红外线吸收颗粒，并且当其结合时，可以产生近红外吸收涂膜，其中透射率急剧变化 波长范围630〜700nm; 一个生产过程; 和它们的分散。 基本上由Al / nCuPO4的微晶组成并具有数均聚集粒径的近红外吸收粒子为20〜200nm，其中A为选自碱金属（Li，Na，K ，Rb和Cs），碱土金属（Mg，Ca，Sr和Ba）和NH4，当A为碱金属或NH4时，n为1，当A为碱土金属时，n为2。

    OPTICAL MEMBER, NEAR INFRARED CUT FILTER, SOLID-STATE IMAGING ELEMENT, LENS FOR IMAGING DEVICE, AND IMAGING/DISPLAY DEVICE USING THE SAME
    6.
    发明申请
    OPTICAL MEMBER, NEAR INFRARED CUT FILTER, SOLID-STATE IMAGING ELEMENT, LENS FOR IMAGING DEVICE, AND IMAGING/DISPLAY DEVICE USING THE SAME 有权
    光学部件，近红外线切割过滤器，固态成像元件，成像装置用镜头和使用其的成像/显示装置

    公开(公告)号：US20120243077A1

    公开(公告)日：2012-09-27

    申请号：US13490130

    申请日：2012-06-06

    申请人： Mitsuo Osawa ,  Makoto Hasegawa ,  Wakako Ito ,  Haisheng Zeng ,  Keisuke Abe

    发明人： Mitsuo Osawa ,  Makoto Hasegawa ,  Wakako Ito ,  Haisheng Zeng ,  Keisuke Abe

    IPC分类号： G02B13/14

    CPC分类号： G02B5/208 ,  G02B3/0056 ,  G02B5/201 ,  G02B13/006 ,  G03B11/00 ,  H04N5/2254

    摘要： Disclosed is an optical member in the form of a film or a thin plate. The optical member contains near infrared absorbing particles comprising crystallites of an oxide containing at least Cu and P and having a number average aggregated particle size of at least 20 nm and at most 200 nm. Further, a near infrared cut filter, a solid-state imaging element, a lens for an imaging device and an imaging/display device are disclosed. They comprise a near infrared absorbing layer containing near infrared absorbing particles comprising crystallites of an oxide containing at least Cu and P and having a number average aggregated particle size of at least 20 nm and at most 200 nm.

    摘要翻译： 公开了一种薄膜或薄板形式的光学构件。 光学构件包含近红外吸收颗粒，其包含至少包含Cu和P的氧化物的微晶，并且具有数均粒度聚集的粒径为至少20nm且至多200nm。 此外，公开了近红外截止滤光器，固态成像元件，用于成像装置的透镜和成像/显示装置。 它们包括含有近红外吸收颗粒的近红外吸收层，其包含至少包含Cu和P的氧化物的微晶，并且具有至少20nm和至多200nm的数均粒度聚集粒度。

    Projection type display device with a phase modulating unit
    7.
    发明授权
    Projection type display device with a phase modulating unit 有权
    具有相位调制单元的投影型显示装置

    公开(公告)号：US08132917B2

    公开(公告)日：2012-03-13

    申请号：US12424971

    申请日：2009-04-16

    申请人： Mitsuo Osawa ,  Atsushi Kawamori

    发明人： Mitsuo Osawa ,  Atsushi Kawamori

    IPC分类号： G03B21/14 ,  G02F1/07 ,  G02B5/30

    CPC分类号： G03B21/2073 ,  G02F2202/40 ,  G02F2203/12 ,  G02F2203/50 ,  G03B21/2033 ,  H04N9/3129 ,  H04N9/3161

    摘要： A projection type display device includes: a light emitting unit that includes at least one light source for emitting a coherent light. An image light generating unit modulates the light emitted by the light emitting unit to generate an image light. A projecting unit projects the image light. A phase modulating unit is arranged either between the light emitting unit and the image light generating unit or between the image light generating unit and the projecting unit and has an area where at least one of a retardation value and an azimuth direction of a slow axis is distributed respectively in different directions or values in a plane orthogonal to an optical axis.

    摘要翻译： 投影型显示装置包括：发光单元，其包括用于发射相干光的至少一个光源。 图像光产生单元调制由发光单元发射的光以产生图像光。 投影单元投射图像光。 相位调制单元设置在发光单元和图像光产生单元之间或者在图像光产生单元和投影单元之间，并且具有以下区域：慢轴的延迟值和方位角方向中的至少一个为 分别分布在与光轴正交的平面中的不同方向或值上。

    Liquid crystal diffraction lens element and optical head device
    8.
    发明授权
    Liquid crystal diffraction lens element and optical head device 失效
    液晶衍射透镜元件和光学头装置

    公开(公告)号：US07710536B2

    公开(公告)日：2010-05-04

    申请号：US11737177

    申请日：2007-04-19

    申请人： Mitsuo Osawa ,  Yoshiharu Ooi

    发明人： Mitsuo Osawa ,  Yoshiharu Ooi

    IPC分类号： G02F1/13 ,  G11B7/135

    CPC分类号： G02F1/133526 ,  G02B3/08 ,  G02B3/14 ,  G02B5/1866 ,  G02B5/1876 ,  G02F1/29 ,  G02F2001/294 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006

    摘要： A liquid crystal diffraction lens element and an optical head device, which can switch focal lengths of both of outgoing light and returning light by a single element, are provided.The liquid crystal lens element comprises transparent substrates 1a, 1b, a liquid crystal 4 sandwiched between the transparent substrates 1a, 1b, transparent electrodes 2a, 2b, birefringent Fresnel lens members 3a, 3b each having a Fresnel lens shape and made of a birefringent material, and a seal 5, wherein the extraordinary refractive index direction A of the birefringent Fresnel lens member 3a and the extraordinary refractive index direction B of the birefringent Fresnel lens member 3b are perpendicular to each other, and the alignment direction of the liquid crystal 4 at the interface between the liquid crystal 4 and the transparent substrate 1a is perpendicular to the alignment direction of the liquid crystal 4 at the interface between the liquid crystal 4 and the transparent substrate 1b.

    摘要翻译： 提供了可以通过单个元件切换出射光和返回光的焦距的液晶衍射透镜元件和光学头装置。 液晶透镜元件包括透明基板1a，1b，夹在透明基板1a，1b，透明电极2a，2b之间的液晶4，每个具有菲涅耳透镜形状并由双折射材料制成的双折射菲涅尔透镜部件3a，3b 以及密封件5，其中双折射菲涅尔透镜部件3a的非常折射率方向A和双折射菲涅耳透镜部件3b的非常折射率方向B彼此垂直，并且液晶4的取向方向在 液晶4和透明基板1a之间的界面在液晶4和透明基板1b之间的界面处垂直于液晶4的取向方向。

    LIQUID CRYSTAL DIFFRACTION LENS ELEMENT AND OPTICAL HEAD DEVICE
    9.
    发明申请
    LIQUID CRYSTAL DIFFRACTION LENS ELEMENT AND OPTICAL HEAD DEVICE 失效
    液晶衍射透镜元件和光学头设备

    公开(公告)号：US20070182915A1

    公开(公告)日：2007-08-09

    申请号：US11737177

    申请日：2007-04-19

    申请人： Mitsuo Osawa ,  Yoshiharu Ooi

    发明人： Mitsuo Osawa ,  Yoshiharu Ooi

    IPC分类号： G02F1/13

    CPC分类号： G02F1/133526 ,  G02B3/08 ,  G02B3/14 ,  G02B5/1866 ,  G02B5/1876 ,  G02F1/29 ,  G02F2001/294 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006

    摘要： A liquid crystal diffraction lens element and an optical head device, which can switch focal lengths of both of outgoing light and returning light by a single element, are provided. The liquid crystal lens element comprises transparent substrates 1a, 1b, a liquid crystal 4 sandwiched between the transparent substrates 1a, 1b, transparent electrodes 2a, 2b, birefringent Fresnel lens members 3a, 3b each having a Fresnel lens shape and made of a birefringent material, and a seal 5, wherein the extraordinary refractive index direction A of the birefringent Fresnel lens member 3a and the extraordinary refractive index direction B of the birefringent Fresnel lens member 3b are perpendicular to each other, and the alignment direction of the liquid crystal 4 at the interface between the liquid crystal 4 and the transparent substrate 1a is perpendicular to the alignment direction of the liquid crystal 4 at the interface between the liquid crystal 4 and the transparent substrate 1b.

    摘要翻译： 提供了可以通过单个元件切换出射光和返回光的焦距的液晶衍射透镜元件和光学头装置。 液晶透镜元件包括透明基板1a，1bb，夹在透明基板1a，1b之间的液晶4，透明电极2a，2b，分别具有菲涅耳的双折射菲涅尔透镜部件3a， 透镜形状并由双折射材料制成;以及密封件5，其中双折射菲涅耳透镜部件3a的非常折射率方向A和双折射菲涅耳透镜部件3b的非常折射率方向B彼此垂直， 液晶4与透明基板1a的界面处的液晶4的取向方向与液晶4与透明基板1b的界面处的液晶4的取向方向垂直。