公开(公告)号：US5157555A

公开(公告)日：1992-10-20

申请号：US802231

申请日：1991-12-04

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G02B7/02 ,  G01Q30/06 ,  G02B27/00 ,  G02B27/09 ,  G11B7/135

CPC classification number: G02B27/0025 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/13727

Abstract: Apparatus for correcting spherical aberration of light reflected from a surface of an information-bearing layer of an optical disk and traversing through a substantially transparent substrate layer, overcoating the information layer, prior to traversal of a multi-element objective lens means, uses a correction lens assembly having several lens elements, with a variable air gap between the adjacent surfaces of a sequential pair of the lens elements. Information about the nominal thickness of an optical disk from which optical energy is then being reflected is obtained, and used to adjust the thickness of the air gap, to correct the additional spherical aberration caused by the change in covering substrate thickness and change the definition of the corrected spot to approach the definition of a spot obtained with a covering substrate of exactly the nominal value.

公开(公告)号：US4459690A

公开(公告)日：1984-07-10

申请号：US517936

申请日：1983-07-29

Applicant: Stephen L. Corsover ,  George J. Ammon ,  Charles W. Reno

Inventor： Stephen L. Corsover ,  George J. Ammon ,  Charles W. Reno

IPC: G11B7/013 ,  G11B7/08 ,  G11B7/09 ,  G11B7/14 ,  G11B20/18 ,  G11B7/00 ,  G11B21/10

CPC classification number: G11B7/24085 ,  G11B20/1833 ,  G11B7/08 ,  G11B7/0904 ,  G11B7/14

Abstract: A wideband optical disc data record/playback apparatus is provided. The apparatus includes means for splitting the output of a single laser into multiple beams. The record beams are independently modulated and used to simultaneously record data at extremely high rates on the surface of an optical disc. The apparatus is capable of recording 1.times.10.sup.11 bits of data on one surface of an optical disc at data rates of 100 to 300 Mb/s. In addition, a plurality of coplanar low power beams are used for playback and data verification purposes. In the playback mode a single beam is split into a plurality of low power beams and one of the plurality of beams is dithered such that the dithered beam exhibits periodic excursions in a radial direction across the surface of the disc. The dithered beam is used for tracking purposes in both the playback and record mode. In a preferred embodiment the playback beams are split by an optical grating and dithered by an acousto-optic device.

Abstract translation: 提供了宽带光盘数据记录/播放装置。 该装置包括用于将单个激光器的输出分成多个光束的装置。 记录光束被独立调制并用于以非常高的速率在光盘的表面上同时记录数据。 该装置能够以100至300Mb / s的数据速率在光盘的一个表面上记录1×1011比特的数据。 此外，多个共面低功率波束用于回放和数据验证目的。 在回放模式中，单个光束被分成多个低功率光束，并且多个光束中的一个被抖动，使得抖动光束在径向方向上呈现出跨越盘表面的周期性偏移。 抖动光束用于在播放和记录模式下的跟踪目的。 在优选实施例中，重放光束被光栅分割并由声光装置抖动。

公开(公告)号：US5239414A

公开(公告)日：1993-08-24

申请号：US707490

申请日：1991-05-30

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G02B13/10 ,  G02B27/09 ,  G11B7/125

CPC classification number: G02B13/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B27/09 ,  G02B27/0972 ,  G11B7/125

Abstract: In an optical system including a laser diode with astigmatism such that the apparent source position in two orthogonal axes each normal to the beam direction differ, a beam prism expander and a collimating lens positioned between the diode and expander, the collimated lens is positioned relative to the laser such that the radius of curvature of the light beam exiting the beam expander in the two axes is identical.

公开(公告)号：US5233583A

公开(公告)日：1993-08-03

申请号：US970521

申请日：1992-11-02

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/09 ,  G11B7/14

CPC classification number: G11B7/14 ,  G11B7/0903

Abstract: An optical disk includes a spiraling guide track embedded in a surface of the disk on either side of which is positioned a different information track. Apparatus for both tracking and reading the disk includes a source providing two light beams directed to the disk surface and spaced apart such as to nominally illuminate respective ones of the information tracks and part of the intermediate guide track. Detectors are positioned to receive reflected light from the disk to both provide signals corresponding to information on the disk and to track the beams relative to the disk so that they are located properly with respect to the location of the information tracks on the disk.

Abstract translation: 光盘包括嵌入盘的表面中的螺旋形导轨，其两侧位于不同的信息轨道上。 用于跟踪和读取盘的装置包括提供指向盘表面并间隔开的两个光束的源，以便公知地照亮信息轨道和中间导轨的一部分中的相应信号轨道。 检测器被定位成接收来自盘的反射光，以提供对应于盘上的信息的信号，并且相对于盘跟踪光束，使得它们相对于盘上的信息轨迹的位置正确定位。

公开(公告)号：US4520472A

公开(公告)日：1985-05-28

申请号：US464658

申请日：1983-02-07

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/00 ,  G11B7/12 ,  G11B7/14 ,  G02B13/08

CPC classification number: G11B7/00 ,  G11B7/12 ,  G11B7/14

Abstract: An optical record and playback system is described for use in a multi-channel data processing system. An optical head which includes a laser diode array comprises a collection objective, an anamorphic beam expander, a relay lens and a focusing lens having a finite conjugate. The optical head collects the laser beams emitted by the diode array, expands the beam cross-section to form circular beams and focuses the beams to diffraction limited spots. In operation the relay lens is used to image the lasing spots from the laser diode array in the conjugate plane of the finite conjugate focusing lens.

Abstract translation: 光学记录和回放系统被描述为用于多通道数据处理系统。 包括激光二极管阵列的光学头包括收集目标，变形光束扩展器，中继透镜和具有有限共轭的聚焦透镜。 光头收集由二极管阵列发射的激光束，扩大光束横截面以形成圆形光束并将光束聚焦到衍射极限点。 在操作中，中继透镜用于在有限共轭聚焦透镜的共轭平面中对来自激光二极管阵列的激光点进行成像。

公开(公告)号：US4449215A

公开(公告)日：1984-05-15

申请号：US361220

申请日：1982-03-24

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/09 ,  G11B7/14 ,  G11B7/00

CPC classification number: G11B7/14 ,  G11B7/0903

Abstract: A Dove prism is provided in a multiple beam optical disc record and playback system. In a multi-track optical system, the multiple spots formed in a multi-channel modulator are imaged on the record medium. The track-to-track spacing between adjacent tracks may be adjusted by rotating the Dove prism such that the angle formed between a line which passes through the center of the spots and the velocity vector of the disc is varied.

Abstract translation: 在多光束光盘记录和重放系统中提供了一个鸽子棱镜。 在多轨光学系统中，在多通道调制器中形成的多个点被成像在记录介质上。 可以通过旋转Dove棱镜来调节相邻轨道之间的轨道到轨道间隔，使得穿过点的中心的线与盘的速度矢量之间形成的角度发生变化。

公开(公告)号：US4449212A

公开(公告)日：1984-05-15

申请号：US288550

申请日：1981-07-30

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/08 ,  G11B7/09 ,  G11B7/14 ,  G11B7/00 ,  G02F1/33

CPC classification number: G11B7/14 ,  G11B7/08 ,  G11B7/0904

Abstract: A wideband optical disc data record/playback apparatus is provided. The apparatus includes means for splitting the output of a single laser into multiple beams. The record beams are independently modulated and used to simultaneously record data at extremely high rates on the surface of an optical disc. The apparatus is capable of recording 1.times.10.sup.11 bits of data on one surface of an optical disc at data rates of 100 to 300 Mb/s. In addition, a plurality of coplanar low power beams are used for playback and data verification purposes. In the playback mode, a single beam is split into a plurality of low power beams and one of the plurality of beams is dithered such that the dithered beam exhibits periodic excursions in a radial direction across the surface of the disc. The dithered beam is used for tracking purposes in both the playback and record mode.

Abstract translation: 提供了宽带光盘数据记录/播放装置。 该装置包括用于将单个激光器的输出分成多个光束的装置。 记录光束被独立调制并用于以非常高的速率在光盘的表面上同时记录数据。 该装置能够以100至300Mb / s的数据速率在光盘的一个表面上记录1×1011比特的数据。 此外，多个共面低功率波束用于回放和数据验证目的。 在回放模式中，单个光束被分成多个低功率光束，并且多个光束中的一个被抖动，使得抖动光束在径向方向上跨越光盘的表面呈现周期性偏移。 抖动光束用于在播放和记录模式下的跟踪目的。

公开(公告)号：US4768184A

公开(公告)日：1988-08-30

申请号：US6205

申请日：1987-01-23

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G02B26/08 ,  G02B27/09 ,  G11B7/135 ,  G11B7/14

CPC classification number: G02B19/0057 ,  G02B19/0014 ,  G02B26/08 ,  G02B27/09 ,  G02B27/0972 ,  G11B7/1378 ,  G11B7/14

Abstract: A multi-beam optical recording system includes a semiconductor laser array. The laser beams are expanded via a prism beam expander to have generally circular cross-sections for optimum spot intensity on the recording medium. According to the teaching of the prior art, the average beam angle of incidence on the input prism of the beam expander is the Brewster angle. According to the present invention, means are provided for rotating the beam expander to minimize the variations in spacing between beams, these variations resulting from the magnification distortion of the prisms of the beam expander.

Abstract translation: 多光束光记录系统包括半导体激光器阵列。 激光束通过棱镜扩束器扩张，以具有大致圆形的横截面，以便在记录介质上获得最佳的光斑强度。 根据现有技术的教导，光束扩展器的输入棱镜上的平均光束入射角是布鲁斯特角。 根据本发明，提供了用于旋转光束扩展器以最小化光束之间的间隔的变化的装置，这些变化是由光束扩展器的棱镜的放大畸变引起的。

公开(公告)号：US4754446A

公开(公告)日：1988-06-28

申请号：US6184

申请日：1987-01-23

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/085 ,  G11B7/12 ,  G11B11/105 ,  G11B7/125

CPC classification number: G11B11/10519 ,  G11B11/10515 ,  G11B11/10532 ,  G11B7/08547 ,  G11B7/12

Abstract: A multi-beam optical record/playback system includes optical elements for directing pluralities of write and read beams as respective diffraction limited spots on the optically-sensitive surface of a rotating disk. The spots on the disk are positioned such that information can be read immediately after it is written. A prism is selectively interposed in the path of write beams for the purpose or erasing previously recorded information. The prism refracts the write beams, causing a shift of its diffraction limited spots to positions behind the corresponding read spots, thus allowing the read beams to track recorded information which is subsequently erased by the light from the refracted beams.

Abstract translation: 多光束光学记录/重放系统包括用于将多个写入和读取光束引导作为旋转盘的光敏表面上的相应衍射限制斑点的光学元件。 磁盘上的光点被定位成可以在写入后立即读取信息。 为了目的，棱镜被选择性地插入到写入光束的路径中或者擦除先前记录的信息。 棱镜折射写入光束，导致其衍射限制光斑移动到对应读取点之后的位置，从而允许读取光束跟踪随后被来自折射光束的光擦除的记录信息。

公开(公告)号：US4590594A

公开(公告)日：1986-05-20

申请号：US554729

申请日：1983-11-23

Applicant: Charles W. Reno

Inventor： Charles W. Reno

IPC: G11B7/09 ,  G11B7/00

CPC classification number: G11B7/0908 ,  G11B7/0917 ,  G11B2007/0924

Abstract: Focus error due to drift from a specified value of the pointing angle of a focus laser light beam with respect to the reflective surface of an optical disc is self-compensated by employing two light beams derived from the same focus laser that have a substantially constant angular displacement therebetween. Any change due to drift in the specified value of the pointing angle of one light beam is accompanied by a substantially equal and opposite change due to drift in the specified value of the pointing angle of the other light beam.

Abstract translation: 由于相对于光盘的反射表面的聚焦激光的指向角的指定值的偏移而产生的聚焦误差是通过采用源自相同聚焦激光器的两个光束进行自补偿的，该光束具有基本上恒定的角度 其间的位移。 由于在一个光束的指向角的指定值中的漂移的任何变化伴随着由于另一光束的指向角的指定值的漂移而实质上相等和相反的变化。