Optical encoder system and method

    公开(公告)号:US11156481B2

    公开(公告)日:2021-10-26

    申请号:US16986575

    申请日:2020-08-06

    Applicant: Michael Naor

    Inventor: Michael Naor

    Abstract: An optical encoder is provided. The encoder includes an optical disc mounted on a shaft, the optical disc containing pit and land markings; an optical pickup unit for an optical disc that receives light from the optical disc and supplies as an output an electrical signal representative of the received light, comprising: a reading head objective lens, and dynamic steering actuators that control the focus and tracking of the reading head objective lens; a processor that receives as an input the electrical signal from the optical pickup unit and reports motion of the substrate based on the received at least one electrical signal.

    Optical encoder system and method

    公开(公告)号:US10768022B2

    公开(公告)日:2020-09-08

    申请号:US16290394

    申请日:2019-03-01

    Applicant: Michael Naor

    Inventor: Michael Naor

    Abstract: An improved optical encoder uses an optical pick-up unit that provides for degrees of freedom in the tracking and focus axes that are unavailable in conventional optical encoders thereby improving the encoders' performance. In an embodiment the encoder employs an optical disc marked with pits and lands which may be arranged in a spiral pattern. The optical disc is mounted on the shaft whose motion is to be monitored by the optical encoder. The encoder may be arranged to read the markings on the optical disc using the three-beam pickup method.

    Focussing system and methods for multi- track optical disk apparatus
    4.
    发明授权
    Focussing system and methods for multi- track optical disk apparatus 失效
    多轨光盘设备的聚焦系统和方法

    公开(公告)号:US5774432A

    公开(公告)日:1998-06-30

    申请号:US842936

    申请日:1997-04-25

    Abstract: Focussing system methods and apparatus are provided for apparatus capable of simultaneously reading multiple tracks of an optical disk. Astigmatism introduced by a cylindrical lens disposed adjacent to the light source, or before the focus detectors arranged at the edge of a wide-area field of illumination, is used to compute an error signal corresponding to the degree of out-of-focus, which error signal is provided to a servo-system that moves the objective lens to correct the focus. An alternative embodiment employs a pair of focus detectors and a pair of micro-lenses having different focal lengths that directs the reflected light onto the focus detectors to generate a focus correction signal. Further alternative embodiments of employing the astigmatism method of focussing are described.

    Abstract translation: 提供了能够同时读取光盘的多个轨道的装置的聚焦系统方法和装置。 由与邻近光源设置的柱面透镜或者布置在大面积照明区域的边缘处的焦点检测器之前的散光引入的散光用于计算对应于失焦程度的误差信号,其中 误差信号被提供给移动物镜以校正焦点的伺服系统。 替代实施例采用一对焦点检测器和具有不同焦距的一对微透镜,其将反射光引导到焦点检测器上以产生聚焦校正信号。 描述采用聚焦散光方法的其它替代实施例。

    Focussing system and methods for multi-track optical disk apparatus
    5.
    发明授权
    Focussing system and methods for multi-track optical disk apparatus 失效
    多轨光盘设备的聚焦系统和方法

    公开(公告)号:US5708634A

    公开(公告)日:1998-01-13

    申请号:US531764

    申请日:1995-09-20

    Abstract: Focussing system methods and apparatus are provided for apparatus capable of simultaneously reading multiple tracks of an optical disk. Astigmatism introduced by a cylindrical lens disposed adjacent to the light source, or before the focus detectors arranged at the edge of a wide-area field of illumination, is used to compute an error signal corresponding to the degree of out-of-focus, which error signal is provided to a servo-system that moves the objective lens to correct the focus. An alternative embodiment employs a pair of focus detectors and a pair of micro-lenses having different focal lengths that directs the reflected light onto the focus detectors to generate a focus correction signal. Further alternative embodiments of employing the astigmatism method of focussing are described.

    Abstract translation: 提供了能够同时读取光盘的多个轨道的装置的聚焦系统方法和装置。 由与邻近光源设置的柱面透镜或者布置在大面积照明区域的边缘处的焦点检测器之前的散光引入的散光用于计算对应于失焦程度的误差信号,其中 误差信号被提供给移动物镜以校正焦点的伺服系统。 替代实施例采用一对焦点检测器和具有不同焦距的一对微透镜,其将反射光引导到焦点检测器上以产生聚焦校正信号。 描述采用聚焦散光方法的其它替代实施例。

    Anchoring Device and Method for Securing Anchoring Ropes for Sun Shade Canopies in various terrains

    公开(公告)号:US20230019879A1

    公开(公告)日:2023-01-19

    申请号:US17860069

    申请日:2022-07-07

    Applicant: Michael Naor

    Inventor: Michael Naor

    Abstract: An anchoring device and method for collapsible sun shelter so that the sun shelter can be used on a variety of terrains, the reusable anchoring device consists of a large corkscrew or other anchoring type post, that can be turned or driven into the ground, the anchoring device top being configured so that it can securely hold a rope, the anchoring device holds a mostly flat geometric shape greater than 36 square inches, the mostly geometric shape having a sewn compartment, or casing, to enclose a rope around the outside edge, with one corner of the mostly flat geometric shape casing open so that the rope can attach to a pole holding up the sun shape, and the opposite corner's reinforced casing open to allow the rope to be pulled out to attach to an anchoring post with an anchoring post stake, a separate anchoring device may be used for each post when setting up the sunshade.

    Method and apparatus for generating focus error signals in a multi-beam optical disk drive
    9.
    发明授权
    Method and apparatus for generating focus error signals in a multi-beam optical disk drive 失效
    用于在多光束光盘驱动器中产生聚焦误差信号的方法和装置

    公开(公告)号:US06229771B1

    公开(公告)日:2001-05-08

    申请号:US09169212

    申请日:1998-10-09

    Abstract: A focus detection system for use in a multi-beam optical pickup assembly is provided that uses an optical element, either a holographic element or diffractive element, to split beams reflected off of a data-bearing surface of an optical disk into a plurality of data beams and a plurality of focus beams. The optical element also introduces astigmatism into the focus beams. The focus beams are projected onto focus detectors configured to account for overlap between adjacent focus beams to produce an accurate focus error signal.

    Abstract translation: 提供了一种用于多光束光学拾取器组件的焦点检测系统,其使用全息元件或衍射元件的光学元件将从光盘的数据承载表面反射的光束分成多个数据 光束和多个聚焦光束。 光学元件还将焦散射入聚焦光束。 聚焦光束被投影到被配置成考虑相邻聚焦光束之间重叠的焦点检测器,以产生准确的聚焦误差信号。

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