公开(公告)号：US20120080411A1

公开(公告)日：2012-04-05

申请号：US13102895

申请日：2011-05-06

申请人： Yosuke MIZUYAMA ,  Riccardo Leto

发明人： Yosuke MIZUYAMA ,  Riccardo Leto

IPC分类号： B23K26/00 ,  G02B27/28 ,  G02B27/48

CPC分类号： G02B27/48 ,  G02B27/286

摘要： A despeckling device and method in which an optical path difference staircase element is disposed between a fly's eye lens array and the image plane in a position near the focus position of the fly's eye lens array, and a laser generating unit generates and transmits pulsed laser beams to the optical path difference staircase element, wherein the pulsed laser beams are driven at a very short pulsed rate.

摘要翻译： 一种去斑装置和方法，其中光学差分阶梯元件设置在飞眼透镜阵列和图像平面之间的位置，靠近蝇眼透镜阵列的聚焦位置，激光产生单元产生并传输脉冲激光束 到光程差阶梯元件，其中以非常短的脉冲速率驱动脉冲激光束。

公开(公告)号：US20120081786A1

公开(公告)日：2012-04-05

申请号：US13052591

申请日：2011-03-21

申请人： Yosuke Mizuyama ,  Riccardo Leto

发明人： Yosuke Mizuyama ,  Riccardo Leto

IPC分类号： G02B27/48 ,  G02B27/28 ,  G02B27/12

CPC分类号： G02B27/48 ,  G02B27/286

摘要： Despeckle elements, laser beam homogenizers and methods for despeckling are provided. The despeckle element includes a transparent material having a first surface including a plural number of optical steps and a second surface having a plural number of microlenses. Each of the number of optical steps is in a one-to-one correspondence with at least one of the microlenses. One of the first surface and the second surface is configured to receive collimated light having a coherence length and a remaining one of the first surface and the second surface is configured to pass the collimated light separated into a plurality of beamlets corresponding to the number of microlenses. A height of each step of at least two of the optical steps is configured to produce an optical path difference of the collimated light longer than the coherence length.

摘要翻译： 提供了散斑元件，激光束均质器和去斑的方法。 去斑元件包括具有包括多个光学步骤的第一表面的透明材料和具有多个微透镜的第二表面。 多个光学步骤中的每一个与至少一个微透镜一一对应。 第一表面和第二表面中的一个被配置为接收具有相干长度的准直光，并且第一表面和第二表面中的剩余的一个被配置为使被分离成对应于微透镜数量的多个子束的准直光 。 至少两个光学步骤的每个步骤的高度被配置为产生比相干长度更长的准直光的光程差。

公开(公告)号：US20100124158A1

公开(公告)日：2010-05-20

申请号：US12273936

申请日：2008-11-19

申请人： Riccardo Leto

发明人： Riccardo Leto

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/0925 ,  G11B7/127 ,  G11B7/1353 ,  G11B7/1356

摘要： An optical system for reading and recording data on a media includes a laser source for generating a laser beam; an optical subsystem for splitting the laser beam into a reference beam and an object beam; and first and second lens for receiving the reference beam and object beam, respectively, and focusing the reference and object beams at a focal point on the media at which the reference beam and object beam interfere with each other. The reference beam and the object beam have first and second optical path lengths defined from the laser source to the focal point of the media. The optical subsystem is positioned so that an optical path length difference between the first and second optical path lengths is substantially equal to an integer multiple of an interference revival period associated with the reference beam and the object beam, the interference revival period associated with peak values of visibility of the interference versus the optical path difference.

摘要翻译： 用于在介质上读取和记录数据的光学系统包括：用于产生激光束的激光源; 用于将激光束分成参考光束和物体光束的光学子系统; 以及分别用于接收参考光束和物体光束的第一和第二透镜，并且将参考物体和物体光束聚焦在参考光束和物体光束彼此干涉的介质上的焦点处。 参考光束和物体光束具有从激光源到介质焦点的第一和第二光程长度。 光学子系统被定位成使得第一和第二光路长度之间的光程长度差基本上等于与参考光束和物体光束相关联的干涉复原周期的整数倍，与峰值相关联的干涉复原周期 干涉的可见度对光程差的影响。

公开(公告)号：US08902506B2

公开(公告)日：2014-12-02

申请号：US13052591

申请日：2011-03-21

申请人： Yosuke Mizuyama ,  Riccardo Leto

发明人： Yosuke Mizuyama ,  Riccardo Leto

IPC分类号： G02B27/10 ,  G02B27/48 ,  G02B27/28

CPC分类号： G02B27/48 ,  G02B27/286

摘要： Despeckle elements, laser beam homogenizers and methods for despeckling are provided. The despeckle element includes a transparent material having a first surface including a plural number of optical steps and a second surface having a plural number of microlenses. Each of the number of optical steps is in a one-to-one correspondence with at least one of the microlenses. One of the first surface and the second surface is configured to receive collimated light having a coherence length and a remaining one of the first surface and the second surface is configured to pass the collimated light separated into a plurality of beamlets corresponding to the number of microlenses. A height of each step of at least two of the optical steps is configured to produce an optical path difference of the collimated light longer than the coherence length.

摘要翻译： 提供了散斑元件，激光束均质器和去斑的方法。 去斑元件包括具有包括多个光学步骤的第一表面的透明材料和具有多个微透镜的第二表面。 多个光学步骤中的每一个与至少一个微透镜一一对应。 第一表面和第二表面中的一个被配置为接收具有相干长度的准直光，并且第一表面和第二表面中的剩余的一个被配置为使被分离成对应于微透镜数量的多个子束的准直光 。 至少两个光学步骤的每个步骤的高度被配置为产生比相干长度更长的准直光的光程差。

公开(公告)号：US20110096653A1

公开(公告)日：2011-04-28

申请号：US12770831

申请日：2010-04-30

申请人： Yosuke MIZUYAMA ,  Riccardo LETO

发明人： Yosuke MIZUYAMA ,  Riccardo LETO

IPC分类号： G11B7/00 ,  G11B7/24

CPC分类号： G11B7/00772 ,  G11B7/1374 ,  G11B7/24079 ,  G11B7/24085

摘要： A micro-holographic data storage system and method. Micro-holograms are written to a data storage medium with two counter-propagating beams via objective recording lenses which have a first numerical aperture (NA) to make the micro-holograms larger. Alternatively, elongated micro-holograms can be produced using counter-propagating beams with different focus points. The micro-holograms are retrieved from the data storage medium using a single beam via an objective reading lens which has a second NA that is higher than the first NA. The data storage medium has a substrate with a plurality of tracks separated by a track pitch. The plurality of micro-holograms are each contained in each of the plurality of tracks, wherein, at least one of the plurality of micro-holograms has a width which is nearly equal to a width of the track pitch.

摘要翻译： 一种微全息数据存储系统及方法。 通过具有第一数值孔径（NA）的物镜记录透镜将微全息图写入具有两个反向传播光束的数据存储介质，以使微全息图变大。 或者，可以使用具有不同焦点的反向传播光束来产生细长的微全息图。 使用具有比第一NA高的第二NA的物镜读取透镜，使用单个光束从数据存储介质检索微全息图。 数据存储介质具有基板，其具有由轨道间距分开的多个轨道。 多个微全息图分别包含在多个轨道中的每一个中，其中，多个微全息图中的至少一个具有几乎等于轨道间距的宽度的宽度。