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21.发明专利Diffractive element, objective lens unit, optical pickup and optical disk device 审中-公开衍射元件，目标透镜单元，光学拾取器和光盘设备
公开(公告)号：JP2007292885A
公开(公告)日：2007-11-08
申请号：JP2006118369
申请日：2006-04-21
Inventor： YAMADA TAKATOSHI , KAWAKITA SATOSHI , SATO HITOSHI , SUGANO TAKASHI , AIBA MOTOO
Abstract: PROBLEM TO BE SOLVED: To obtain a diffractive element exhibiting preferable characteristics. SOLUTION: The diffractive element is produced by forming a cover layer 20D and a diffraction pattern layer 20E on an upper face 20Ca and a lower face 20c, respectively, of a base layer 20C comprising an injection molded product. The diffraction pattern layer 20E and the cover layer 20D are successively formed by a UV replica method, in the order of higher glass transition point Tg of the UV-curing resin to be used. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：获得具有优选特性的衍射元件。 解决方案：通过在包括注射成型产品的基底层20C的上表面20Ca和下表面20c上形成覆盖层20D和衍射图案层20E来产生衍射元件。 衍射图案层20E和覆盖层20D依次使用紫外线固化树脂的玻璃化转变温度Tg高的UV复制方法形成。 版权所有（C）2008，JPO＆INPIT
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22.发明专利Design method of diffraction element, diffraction element, objective lens unit, optical pickup and optical disk device 审中-公开衍射元件，衍射元件，目标透镜单元，光学拾取器和光盘设备的设计方法
公开(公告)号：JP2007273013A
公开(公告)日：2007-10-18
申请号：JP2006098707
申请日：2006-03-31
Inventor： YAMADA TAKATOSHI , KAWAKITA SATOSHI , SATO HITOSHI , SUGANO TAKASHI , AIBA MOTOO
CPC classification number: G11B7/1374 , G02B5/1866 , G11B7/1275 , G11B7/1353 , G11B2007/0006
Abstract: PROBLEM TO BE SOLVED: To easily design a diffraction element having satisfactory characteristics. SOLUTION: When a diffraction grating DG wherein a wavelength λ not to be diffracted and a wavelength λ to be diffracted are respectively determined as design targets is designed, values of refractive indices n of materials M1 and M2 to be candidates in each wavelength λ are substituted for a left side of formula (16), a right side of formula (16) is made to be a ratio of simple integers by satisfying formula (11) and the materials M1 and M2 to be the candidates are discriminated to be suitable as materials which constitute the diffraction grating DG when formula (17) is satisfied. Thus, the materials M1 and M2 capable of forming the diffraction grating DG as to be specified designed can be easily selected. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：为了容易地设计具有令人满意的特性的衍射元件。 解决方案：设定将不衍射波长λ和待衍射波长λ的衍射光栅DG分别设计为设计目标时，将材料M1和M2的折射率n的值作为每个波长的候选值 λ代入式（16）的左侧，通过满足公式（11）将公式（16）的右侧作为简单整数的比例，并将作为候选的材料M1和M2区分为 适合作为满足式（17）时构成衍射光栅DG的材料。 因此，可以容易地选择能够形成要设计的衍射光栅DG的材料M1和M2。 版权所有（C）2008，JPO＆INPIT
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23.发明专利Diffraction element, objective lens unit, optical pickup, and optical disk device 审中-公开衍射元件，目标透镜单元，光学拾取器和光盘设备
公开(公告)号：JP2007273012A
公开(公告)日：2007-10-18
申请号：JP2006098706
申请日：2006-03-31
Inventor： KAWAKITA SATOSHI , AIBA MOTOO , SUGANO TAKASHI , SATO HITOSHI , YAMADA TAKATOSHI
CPC classification number: G11B7/1374 , G02B5/1895 , G11B7/1353 , G11B2007/0006
Abstract: PROBLEM TO BE SOLVED: To hardly change a diffraction efficiency EF regardless of usage temperature. SOLUTION: In the diffraction element, which is composed of a base layer 20C having a diffraction pattern PTc for a CD and a cover layer 20D covering the base layer 20C, a cover material RA and a base material RB are selected so that a change amount of the refractive index nA of the cover material RA and a change amount of the refractive index nB of the base material RB when temperature is changed from -40[°C] to 75[°C] are nearly equal to each other. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：不管使用温度如何，几乎不改变衍射效率EF。 解决方案：在由具有CD的衍射图案PTc和覆盖基底层20C的覆盖层20D的基底层20C构成的衍射元件中，选择覆盖材料RA和基材RB，使得 覆盖材料RA的折射率nA的变化量和当温度从-40 [℃]变化到75℃时基材RB的折射率nB的变化量几乎相等 。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JPH10160906A
公开(公告)日：1998-06-19
申请号：JP32045896
申请日：1996-11-29
Applicant: SONY CORP
Inventor： KAWAKITA SATOSHI , FUKAZAWA YOSHIO , KUBO MINORU , UEDA HIROYUKI
IPC: G11B7/135 , G02B1/11 , G02B1/113 , G02B3/00 , G11B7/1374 , G11B11/10 , G11B11/105
Abstract: PROBLEM TO BE SOLVED: To make the best display of a reflection preventive effect by changing film thickness in a center part of a surface part of a reflection preventive film from the thickness of the peripheral part according to an incident angle of luminous flux for the surface part. SOLUTION: The reflection preventive films are formed on the surface part 1a and a rear surface part 1b of a lens 1 consisting of nitric material and transparent synthetic resin material. The film thickness are different from each other among the reflection preventive film formed on an incident first area A1 being the area of the central part of the surface part 1a, the reflection preventive film formed on an incident surface second area B1 being the circular area of the peripheral part of this incident surface first area A1 and the reflection preventive film formed on an incident surface third area C1 being the circular area ranging from the outer edge of this incident surface second area B1 to the peripheral part of the lens surface. Further, related to the rear surface part 1b also, the film thickness are different from each other. The differences in the film thickness in every area of these reflection preventive films are decided according to the incident angle (outgoing angle) shown by θ of the luminous flux for the lens surface in the area.
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公开(公告)号：JPH10142404A
公开(公告)日：1998-05-29
申请号：JP30993396
申请日：1996-11-07
Applicant: SONY CORP
Inventor： KUBO MINORU , UEDA HIROYUKI , KAWAKITA SATOSHI , FUKAZAWA YOSHIO
Abstract: PROBLEM TO BE SOLVED: To accurately attach a multilens for an optical pickup made of glass to a lens holder and to reduce a manufacturing cost of the multilens. SOLUTION: Planes parallel to an optical axis X-X of the multilens 1 for the optical pickup made of glass form two planes (a first reference flank 4 and a second reference flank 5) which are respectively parallel to or orthogonally intersecting with a cylindrical generatrix 6 of a cylindrical surface 2 being a front surface of the lens. On one surface of a planar glass preform material, projecting lines 16 having cylindrical surfaces and stretching in cylindrical generatrix directions are formed by pressing. On another surface at a part opposed to the projecting line 16, plural spherical recessed parts 17 having recessed spherical surfaces are formed along the cylindrical generatrix directions and then respective spherical recessed parts are cut as a unit.
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Patent Agency Ranking
公开(公告)号：JP2008158183A
公开(公告)日：2008-07-10
申请号：JP2006345862
申请日：2006-12-22
Inventor： KAWAKITA SATOSHI , YAMADA TAKATOSHI , SATO HITOSHI , SUGANO TAKASHI , AIBA MOTOO
Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of optical element capable of materializing a diffraction element exhibiting a satisfactory characteristic.
SOLUTION: When a diffraction pattern layer 20E is formed by a replica method, a first UV-curing resin 100A is irradiated with UV rays which allow curing reaction to quickly proceed, even though there is a risk of degrading the resin by long-time irradiation over a short curing time, whereby a most part of functional groups of the first UV-curable resin 100A are reacted effectively, and thereafter, the first UV-curing resin 100A is irradiated with an irradiation light, which has a low speed of curing reaction although there is a small risk of degrading the resin because of a low energy level of the resin over an irradiation time longer than the curing time, whereby the functional groups remaining in the first UV-curable resin 100A, of which the speed of curing reaction is left to be small because of disappearance of the fluidity, is made to substantially completely react taking a long time.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供能够实现具有令人满意的特性的衍射元件的光学元件的制造方法。 解决方案：当通过复制方法形成衍射图案层20E时，第一UV固化树脂100A被照射紫外线，其允许固化反应快速进行，即使存在长时间降解树脂的风险 在固化时间短的同时照射，由此第一UV固化树脂100A的大部分官能团反应有效，然后用第一UV固化树脂100A照射具有低速的照射光 虽然由于在比固化时间长的照射时间树脂的能量水平低的情况下树脂降解的风险很小，由此残留在第一UV固化树脂100A中的官能团，其速度 的固化反应由于流动性的消失而变小，使其长时间基本上完全反应。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007294069A
公开(公告)日：2007-11-08
申请号：JP2006317460
申请日：2006-11-24
Inventor： SATO HITOSHI , YAMADA TAKATOSHI , KAWAKITA SATOSHI , SUGANO TAKASHI , AIBA MOTOO
CPC classification number: G11B7/13922 , G11B7/1353 , G11B7/22 , G11B2007/0006
Abstract: PROBLEM TO BE SOLVED: To attain a diffraction element corresponding to plurality of wavelengths with good characteristics. SOLUTION: The diffraction element 20 is provided with an injection-molded transparent base layer 20c and a diffraction pattern layer 20E provided on the flat lower surface 20Cb in the base layer 20C by being firmly attached, on the surface of which a diffraction pattern PTd for DVD is formed and formed by first UV curable resin 100A and the first UV curable resin 100A which is a material of the diffraction pattern layer 20E is selected so that difference Δn4 between refraction indexes of the base layer 20C and the diffraction pattern layer 20E becomes within ±0.013. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：获得对应于具有良好特性的多个波长的衍射元件。 解决方案：衍射元件20通过牢固地附着在基底层20C中的平坦的下表面20Cb上设置注射成型的透明基底层20c和衍射图案层20E，其表面上衍射 用于DVD的图案PTd由第一UV固化树脂100A形成并形成，并且选择作为衍射图案层20E的材料的第一UV可固化树脂100A，使得基底层20C的折射率与衍射图案层之间的差Δn4 20E变为±0.013。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2007293953A
公开(公告)日：2007-11-08
申请号：JP2006118365
申请日：2006-04-21
Inventor： SATO HITOSHI , YAMADA TAKATOSHI , KAWAKITA SATOSHI , SUGANO TAKASHI , AIBA MOTOO
Abstract: PROBLEM TO BE SOLVED: To make a diffraction element present excellent characteristics. SOLUTION: The diffraction element 20 is easily designed so that outside partial mass Q exceeds an adjustment unit of a delivery amount of a cover material MC in a delivery device 62 to prevent quality deterioration in manufacturing since capacity in the outside part ARo is increased and the outside partial mass Q is increased by providing a liquid pool part 20Cr in the outside part ARo on the top surface 20Ca of a base layer 20C. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：使衍射元件具有优异的特性。 解决方案：衍射元件20易于设计，使得外部部分质量Q超过输送装置62中的覆盖材料MC的输送量的调节单元，以防止制造中的质量劣化，因为外部部分ARo的容量为 通过在基底层20C的上表面20Ca上的外侧部分ARo中设置液体池部20Cr来增加外部部分质量Q。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2005070174A
公开(公告)日：2005-03-17
申请号：JP2003296726
申请日：2003-08-20
Inventor： KAWAKITA SATOSHI , YAMAGUCHI MASAAKI
Abstract: PROBLEM TO BE SOLVED: To provide injection molding equipment for lens formation which can easily enhance the accuracy of optical lenses having optical information patterns.
SOLUTION: The injection molding is equipped with a stationary mold 5 and movable mold 6 which are attachably and detachably arranged to face each other and are injected and packed with a molten resin, pattern forming sections 8 for the optical information patterns which are disposed in a plurality in a concentric form in the cavity 7 of the either one mold of the stationary mold 5 and the movable mold 6, lens forming sections 9 which are disposed in the positions facing the pattern forming sections 8 within the cavity 7 of the mold facing the mold provided with the pattern forming sections 8 and form spherical shapes, and aligning members 10 which are disposed to project to the other mold side in the either one mold of the stationary mold 5 or the movable mold 6, are inserted into insertion ports 11 disposed at the other mold when the stationary mold 5 and the movable mold 6 are closed and which align the stationary mold 5 and the movable mold 6.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供可以容易地提高具有光学信息图案的光学透镜的精度的透镜形成用注塑设备。 解决方案：注射成型装备有固定模具5和可移动模具6，它们可相互连接并可拆卸地布置成彼此面对并被注入并填充有熔融树脂，图形形成部分8用于光学信息图案， 在固定模具5的任一个模具和可移动模具6的空腔7中以同心形式设置多个，透镜形成部分9设置在与图案形成部分8相对的位置中 模具面向设置有图案形成部分8的模具并且形成球形，并且设置成突出到固定模具5或可移动模具6的任一模具中的另一模具侧的对准构件10插入到插入 当固定模具5和可移动模具6关闭并将固定模具5和活动模具6对准时，端口11设置在另一个模具上。（C）2005年，JPO和NCIPI
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公开(公告)号：JP2002096344A
公开(公告)日：2002-04-02
申请号：JP2000290455
申请日：2000-09-25
Applicant: SONY CORP
Inventor： KAWAKITA SATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for designing a mold for molding a lens, and the lens accurately having desired optical characteristics without being affected by the shrinkage of a material, the change quantity of a refractive index or the like being the indefinite elements of the lens. SOLUTION: A tentative mold 2 is formed on the basis of a predetermined shape design value and a tentative lens 1 is molded by the tentative mold, and the optical characteristics of the molded tentative lens are measured to be compared with desired optical characteristics to detect the shift quantity of the spherical aberration value thereof. The shift quantity of an aspheric aberration value shifted from the desired optical characteristics as a result of detection is collated with a table T preliminarily calculating the relation between the fine change quantity Ai of higher order among the aspheric surface constant Ai of a formula prescribing an aspheric surface and the variation quantity of the aspheric surface aberration value, and the fine change quantity of higher order among the corresponding aspheric surface constant is determined as adjusting quantity and the adjusting quantity is added to the aspheric surface constant of the formula for prescribing the aspheric surface of the tentative mold to design a final mold as a new shape design value.
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