公开(公告)号：US5088079A

公开(公告)日：1992-02-11

申请号：US404941

申请日：1989-09-08

申请人： James W. Baer

发明人： James W. Baer

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/12

CPC分类号： G11B7/0901 ,  G11B7/08588 ,  G11B7/12

摘要： The carriage optics system for an optical data storage system includes a read/write head that consists of fixed and moving optics. The moving optics includes a carriage actuator that is equipped with a beam relaying telescope lens system that minimizes the defocusing effects of the movement of the carriage actuator.

摘要翻译： 用于光学数据存储系统的托架光学系统包括由固定和移动光学器件组成的读/写头。 移动光学元件包括滑架致动器，其配备有光束中继望远镜透镜系统，其最小化滑架致动器的运动的散焦效果。

公开(公告)号：US4712887A

公开(公告)日：1987-12-15

申请号：US811380

申请日：1985-12-20

申请人： James W. Baer

发明人： James W. Baer

IPC分类号： G11B7/08 ,  G11B7/09 ,  G02B26/08

CPC分类号： G11B7/1378 ,  G11B7/12 ,  G11B7/0901 ,  G11B7/0908

摘要： An optical head structure, movable to scan over a disk surface, includes a fixed optical arrangement. Fine focussing and side-to-side adjustments for scanning are effected by movements of another lens mounted on a substantially stationary part of the system structure. The movable lens is generally aligned with the axis of the fixed lens on the movable head structure. In an alternative embodiment, lateral adjustments of scanning spot position are made by pivoting a reflecting mirror on the stationary structure and axial adjustments of the scanning spot are made by axially moving a lens on the fixed structure. Light paths in the movable head structure are altered by reflecting mirrors, all such mirrors being in fixed relationship with the fixed objective lens. The movable head structure bearing fixed lenses and fixed mirrors mvoes in an arc, not concentric with disk rotation, to traverse the disk and locate a desired track.

摘要翻译： 可移动以在盘表面上扫描的光学头结构包括固定光学装置。 用于扫描的精细聚焦和侧面对侧调节由安装在系统结构的基本上静止的部分上的另一透镜的运动来实现。 可移动透镜通常与可移动头结构上的固定透镜的轴线对准。 在替代实施例中，扫描光点位置的横向调整是通过在静止结构上枢转反射镜而进行的，并且通过在固定结构上轴向移动透镜来进行扫描光点的轴向调节。 通过反射镜改变可动头结构中的光路，所有这些反射镜与固定物镜处于固定关系。 可移动的头部结构承载固定镜片和固定镜子，与圆盘旋转不同心的圆弧，以遍历盘并定位所需的轨道。

公开(公告)号：US4686662A

公开(公告)日：1987-08-11

申请号：US631277

申请日：1984-07-16

申请人： James W. Baer

发明人： James W. Baer

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/095

CPC分类号： G11B7/09 ,  G11B7/12

摘要： A subaperture optical system for preventing interference between light inadvertently reflected from the protective overcoat of an optical recording disk from disruptively interfering with light reflected from the active layer of the optical recording disk, thereby causing coarse servo tracking errors as the coarse servo actuator carriage translates over the coarse servo tracks on the disk service. The optical system is comprised of a laser light source, a collimating lens system, an astigmatizing lens system, a subaperture mirror, a carriage actuator, a beam relaying telescope, an objective lens, an objective lens focus actuator, a reflected coarse servo beam focusing lens, and a coarse servo detector. The laser issues a beam which follows a first subaperture path that is parallel to, but off center from, the optical axis of an objective lens of the optical system. The beam is formed into a line focused spot which is focused on the disk surface at a non normal angle. The beam reflected by the active layer and the protective overcoat are spatially separated, and therefore do not interfere. The reflected beams follow a second subaperture path to the coarse servo detector, where the reflected signal is detected unaffected by any interference between the reflected beams.

摘要翻译： 一种子孔径光学系统，用于防止由光记录盘的保护外套反射的光之间的干扰，干扰从光记录盘的有源层反射的光，从而在粗伺服驱动器支架翻转时引起粗略的伺服跟踪误差 磁盘服务上的粗略伺服磁道。 光学系统由激光光源，准直透镜系统，像散透镜系统，子孔镜，滑架致动器，光束中继望远镜，物镜，物镜聚焦致动器，反射粗略伺服光束聚焦 镜头和粗略的伺服检测器。 激光器发出光束，其遵循与光学系统的物镜的光轴平行但偏离中心的第一子孔径路径。 光束形成为以非法向角度聚焦在盘表面上的线聚焦光点。 由活性层和保护外涂层反射的光束在空间上分离，因此不会干扰。 反射光束遵循粗略伺服检测器的第二子孔径路径，其中检测反射信号不受反射光束之间的任何干涉的影响。

公开(公告)号：US4980882A

公开(公告)日：1990-12-25

申请号：US277537

申请日：1988-11-28

申请人： James W. Baer ,  Majed K. Abed

发明人： James W. Baer ,  Majed K. Abed

IPC分类号： G11B7/007 ,  G11B7/09

CPC分类号： G11B7/09 ,  G11B7/24082

摘要： An improved coarse access and tracking servo system for use with an optical disk storage system is disclosed. Concentric servo tracks placed on the disk are readily distinguished from data tracks placed on the disk which may or may not be present on the disk depending upon the amount of information that has been written on the disk, i.e., how "full" the disk is with respect to its maximum capacity for storing data. A predetermined signal is embedded within each of the plurality of concentric servo tracks found on the disk. A radial strip or line, sufficiently long to always include at least one servo track, but also long enough to include data tracks, if any, on either side of the illuminated servo track is projected on the surface of the disk in order to detect the servo tracks. Light returned from the illuminated servo tracks falls upon a detector and generates a frequency component that is readily distinguished from any frequency components associated with signals generated from light returned from any of the data tracks. The position of the servo track within the illuminated radial strip or line is then accurately determined, regardless of whether data tracks are present or not within the illuminated strip or line. This position of the servo track within the illuminated radial strip or line is then used by the coarse access and tracking servo system in order to accurately position an optical head at a desired position with respect to a selected coarse servo track on the disk.

摘要翻译： 公开了一种用于光盘存储系统的改进的粗略访问和跟踪伺服系统。 放置在磁盘上的同心伺服磁道可以容易地与放置在磁盘上的数据磁道区分开，磁盘上可能存在或可能不存在于磁盘上的信息，这取决于已写入磁盘的信息量，即磁盘“完整” 相对于其存储数据的最大容量。 预定信号被嵌入在盘上发现的多个同心伺服磁道的每一个中。 足够长的总是包括至少一个伺服轨道，但也足够长以包括在照明的伺服轨道的任一侧上的数据轨迹（如果有的话）被投影在盘的表面上的径向条或线，以便检测 伺服轨道。 从照明的伺服磁道返回的光落在检测器上，并产生一个频率分量，该频率分量容易与与从任何数据轨道返回的光产生的信号相关联的任何频率分量区分开。 然后可以精确地确定在照明的径向条或线内的伺服轨道的位置，而不管数据轨道是否存在于被照明的条带或线内。 照亮的径向条带或线内的伺服轨道的该位置然后由粗略的访问和跟踪伺服系统使用，以便将光头相对于盘上选定的粗略伺服轨道精确地定位在期望的位置。

公开(公告)号：US4734906A

公开(公告)日：1988-03-29

申请号：US628692

申请日：1984-07-06

申请人： James W. Baer ,  Scott D. Wilson

发明人： James W. Baer ,  Scott D. Wilson

IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B7/00 ,  G02B5/04

CPC分类号： G11B7/12 ,  G11B7/1359 ,  G11B7/13922 ,  G11B7/1398

摘要： A self contained, replaceable diode laser module for providing a fully collimated, de-astigmatized, and circular cross-sectioned beam. In the preferred embodiment a first compound spherical lens partially collimates the beam. An in-line combined cross-section modifier system then de-astigmatizes and modifies the cross-section of the beam. The beam modifier system is comprised of first and second triangular prisms oriented at non-normal angles to the path of the beam. This allows both the cross-section and the astigmatism of the beam to be corrected. A planar mirror between the first and second prisms directs the beam from the first prism to the second prism, so that the beam can exit the second prism co-axial with the incident beam path. The beam then enters the second collimating subsystem. This subsystem is a telescopic lens system comprised of a second and a third spherical, which simultaneously, completely collimates the beam, and expands the beam to the proper diameter for transmission through the optical system of the main device. The beam, upon existing the second collimating subsystem is a fully collimated beam, which is de-astigmatized and has a circular cross-section of the proper diameter.

摘要翻译： 一个独立的，可更换的二极管激光器模块，用于提供完全准直，去散光和圆形的横截面光束。 在优选实施例中，第一复合球面透镜部分地准直光束。 一个在线组合截面修正系统然后对散光束的横截面进行散光和修改。 光束修改器系统包括以与光束的路径成非正常角度定向的第一和第二三角形棱镜。 这允许校正光束的横截面和像散。 第一和第二棱镜之间的平面反射镜将光束从第一棱镜引导到第二棱镜，使得光束可以与入射光束路径同轴地离开第二棱镜。 光束然后进入第二准直子系统。 该子系统是由第二和第三球面组成的伸缩透镜系统，其同时完全准直光束，并且将光束扩展到适当的直径以通过主设备的光学系统传输。 在存在第二准直子系统时，光束是完全准直的光束，其被去散光并且具有适当直径的圆形横截面。

公开(公告)号：US4571712A

公开(公告)日：1986-02-18

申请号：US628682

申请日：1984-07-06

申请人： Paul M. Romano ,  James W. Baer ,  James W. Hargarten

发明人： Paul M. Romano ,  James W. Baer ,  James W. Hargarten

IPC分类号： G11B7/0045 ,  G11B7/085 ,  G11B7/09 ,  G11B27/10 ,  H01S3/00 ,  G11B7/00

CPC分类号： H01S3/0014 ,  G11B27/105 ,  G11B7/0045 ,  G11B7/08547 ,  G11B7/0903 ,  G11B7/094

摘要： A beam alignment signal processing system wherein a true beam position error signal is generated regardless of beam intensity. This beam position error signal is used within a beam alignment system that maintains a desired alignment between first and second beams traveling in parallel along a desired optical path. A detector senses the position of the beams as the beams (or portions of the beams) are directed onto a surface thereof. The detector generates a set of position signals that indicate the position at which a beam, or at which an energy centroid associated with a plurality of beams, falls upon the detector surface. A first set of position signals is generated corresponding to the position of the first beam on the detector surface with the second beam turned off. These signals are stored in signal storage means. The second beam is turned back on, and a second set of position signals is generated corresponding to the position of the centroid of the first and second beams on the detector surface. A third set of position signals is then generated from the first and second set of position signals corresponding to the position of the second beam on the detector surface. The position error signal is finally generated from the first and third sets of position signals. Detector offset correction means are employed to remove the effects of detector offset from the sets of position signals. Normalization means are likewise employed to remove the effects of beam intensity variations from the sets of position signals.

摘要翻译： 光束对准​​信号处理系统，其中产生真实光束位置误差信号，而不管光束强度如何。 该光束位置误差信号被用在光束对准系统内，该光束对准系统保持沿所需光路平行行进的第一和第二光束之间期望的对准。 当光束（或光束的一部分）被引导到其表面上时，检测器感测光束的位置。 检测器产生一组位置信号，其指示光束的位置，或者与多个光束相关联的能量中心落在检测器表面上的位置。 产生第一组位置信号，对应于检测器表面上第一个光束的位置，第二个光束被关闭。 这些信号被存储在信号存储装置中。 第二光束被重新导通，并且产生对应于检测器表面上的第一和第二光束的质心的位置的第二组位置信号。 然后从对应于检测器表面上的第二光束的位置的第一和第二组位置信号产生第三组位置信号。 位置误差信号最终由第一和第三组位置信号产生。 采用检测器偏移校正装置来消除检测器偏离位置信号组的影响。 归一化装置同样用于消除光束强度变化对位置信号组的影响。

公开(公告)号：US4752922A

公开(公告)日：1988-06-21

申请号：US628196

申请日：1984-07-06

申请人： Richard B. MacAnally ,  Brad R. Reddersen ,  James W. Baer ,  Charles Reilly ,  Scott L. DeVore ,  Scott D. Wilson

发明人： Richard B. MacAnally ,  Brad R. Reddersen ,  James W. Baer ,  Charles Reilly ,  Scott L. DeVore ,  Scott D. Wilson

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B7/095

CPC分类号： G11B7/09 ,  G11B7/085 ,  G11B7/12

摘要： An optical system for writing and reading data from a rotating optical storage disk, comprising a first, second and third coherent light source, providing coarse seek, reading, and writing functions, the three writing sources sharing a plurality of optical elements in common, all cooperating to provide for the coarse seek, fine seek, focus and tracking functions of the device. The read and the write optical beams are optically coupled together to ensure proper spacing of a newly written track with regard to the previously written track.

摘要翻译： 一种用于从旋转光存储盘写入和读取数据的光学系统，包括第一，第二和第三相干光源，提供粗略的搜索，读取和写入功能，所述共享多个光学元件的三个写入源共同 协同提供设备的粗调，精细寻找，对焦和跟踪功能。 读和写光束被光学耦合在一起，以确保新写入的轨道相对于先前写入的轨道的适当间隔。

公开(公告)号：US4621351A

公开(公告)日：1986-11-04

申请号：US628684

申请日：1984-07-06

申请人： James W. Baer ,  Henry H. Hoshiko ,  Robert P. McIntosh ,  Charles M. Reilly ,  Paul M. Romano ,  James W. Hargarten

发明人： James W. Baer ,  Henry H. Hoshiko ,  Robert P. McIntosh ,  Charles M. Reilly ,  Paul M. Romano ,  James W. Hargarten

IPC分类号： G11B7/085 ,  G11B7/00

CPC分类号： G11B7/08547

摘要： A beam alignment system and method for aligning a first radiation beam with respect to a second radiation beam as these beams share a desired optical path. Beam steering means, such as a galvonometer controlled mirror, steer the alignment of the first beam as it enters the shared optical path. Detection means are employed to sense the relative alignment between the first and second beams as they travel through the shared path. This sensed alignment is compared to a desired alignment, and a position error signal is generated to indicate the error therebetween. The position error signal, in turn, is used to steer the galvonometer controlled mirror in order to force the beam alignment error between the two beams to zero. In a preferred embodiment, the beam alignment system is used in an optical disk storage system to precisely position a write beam a desired distance from a read beam; thereby allowing a data track written with the write beam on a storage disk to be spaced a desired distance (the track pitch) from a previously written track that is being followed by the read beam.

摘要翻译： 一种用于使第一辐射束相对于第二辐射束对准的光束对准系统和方法，因为这些光束共享期望的光路。 光束转向装置，例如电流计控制反射镜，当第一光束进入共享光路时，引导第一光束的对准。 当第一和第二光束穿过共享路径时，采用检测装置来感测第一和第二光束之间的相对对准。 将该检测到的对准与期望的对准进行比较，并且产生位置误差信号以指示它们之间的误差。 反过来，位置误差信号用于引导电流计控制镜，以迫使两束光束之间的光束对准误差为零。 在优选实施例中，光束对准系统用于光盘存储系统中以将写入光束精确地定位到读取光束所需的距离; 从而允许用存储盘上的写入光束写入的数据轨迹与预先写入的跟踪读取光束的轨迹间隔一个期望的距离（轨道间距）。

公开(公告)号：US4352186A

公开(公告)日：1982-09-28

申请号：US129945

申请日：1980-03-13

申请人： John D. Kuppenheimer, Jr. ,  James W. Baer

发明人： John D. Kuppenheimer, Jr. ,  James W. Baer

IPC分类号： H01S3/16 ,  H01S3/14

CPC分类号： H01S3/16

摘要： Improved laser system gain is achieved by using Gadolinium to totally replace the Yttrium in a Lithium Yttrium Fluoride (YLF) host crystal so as to increase the amount of Neodymium which can be doped into the host crystal.

摘要翻译： 通过使用钆完全替代钇氟化钇（YLF）主晶体中的钇来实现提高的激光系统增益，以增加可以掺入主晶体的钕的量。