公开(公告)号：US20120261561A1

公开(公告)日：2012-10-18

申请号：US13444934

申请日：2012-04-12

Applicant: Haruhiko HORIGUCHI ,  Chihiro NAGURA

Inventor： Haruhiko HORIGUCHI ,  Chihiro NAGURA

IPC: G01D5/347

CPC classification number: G01D5/262 ,  G01D5/34746 ,  G01D5/34784

Abstract: An encoder includes a scale that includes a pattern row, a detector array, and a signal processor. The pattern row has a plurality of different modulation periods in the moving direction, an amplitude of the energy distribution in the pattern having at least one modulation period being configured to change with a position of the scale in the moving direction. The signal processor acquirers an amplitude of an energy distribution of a corresponding modulation period based on an output signal from the detector array, and an amplitude signal obtained by normalizing a plurality of amplitudes obtained by the plurality of amplitude acquirers, the amplitude signal serving as a position signal representative of the position of the scale.

Abstract translation: 编码器包括包括图案行，检测器阵列和信号处理器的标尺。 图案行在移动方向上具有多个不同的调制周期，图案中的能量分布的振幅具有至少一个调制周期，其被配置为随着标尺在移动方向上的位置而改变。 信号处理器基于来自检测器阵列的输出信号获取相应调制周期的能量分布的幅度，以及通过归一化由多个振幅获取器获得的多个幅度而获得的幅度信号，振幅信号用作 位置信号代表刻度的位置。

公开(公告)号：US08289569B2

公开(公告)日：2012-10-16

申请号：US12718867

申请日：2010-03-05

Applicant: Kenichi Iesaki

Inventor： Kenichi Iesaki

IPC: G06F15/00 ,  B41J29/38

CPC classification number: G01D5/34715 ,  G01D5/34746

Abstract: An encoder signal processor which processes a pulsed encoder signal output from an encoder in accordance with a travel distance of an object to be detected, including: an increasing and decreasing wave generating unit that generates an increasing and decreasing wave based on the encoder signal output from the encoder; an intermediate pulse signal generating unit that generates a binarized intermediate pulse signal based on the increasing and decreasing wave; and a multiplied pulse signal generating unit that generates a multiplied pulse signal, which is a signal obtained by multiplying the encoder signal by 2, by performing exclusive-OR operation between the encoder signal output from the encoder and the intermediate pulse signal.

Abstract translation: 一种编码器信号处理器，其根据被检测物体的移动距离处理从编码器输出的脉冲编码器信号，包括：增加和减少波生成单元，其基于从 编码器 中间脉冲信号发生单元，其基于增加和减少的波生成二值化的中间脉冲信号; 以及乘法脉冲信号生成单元，其通过从编码器输出的编码器信号和中间脉冲信号之间进行异或运算，生成乘法器信号，该乘法脉冲信号是将编码器信号乘以2而获得的信号。

公开(公告)号：US20120217383A1

公开(公告)日：2012-08-30

申请号：US13370560

申请日：2012-02-10

Applicant: Haruhiko Horiguchi ,  Chihiro Nagura

Inventor： Haruhiko Horiguchi ,  Chihiro Nagura

IPC: G01D5/347

CPC classification number: G01D5/34746 ,  G01D5/34715

Abstract: An optical encoder includes a light source, a scale which is irradiated by the light source and has a fine pitch pattern and a coarse pitch pattern in one track, a photo detector array which detects transmitting light or reflected light from the scale which are emitted from the light source, a signal processing unit including a first initial-stage amplifier unit that generates a position detection signal from the photo detector array, and a control unit that uses an output signal from the first initial-stage amplifier unit to control a light amount variation of the light source. The optical encoder can operate in a high resolution detection mode that forms the photo detector array at a first pitch to detect the fine pitch pattern and a low resolution detection mode that forms the photo detector array at a second pitch to detect the coarse pitch pattern.

Abstract translation: 光学编码器包括光源，由光源照射的刻度尺，并且在一条光道中具有精细的节距图案和粗略的节距图案，检测来自标尺的透射光或反射光的光电检测器阵列，其从 光源，包括从光检测器阵列产生位置检测信号的第一初级放大器单元的信号处理单元，以及使用来自第一初级放大器单元的输出信号来控制光量的控制单元 光源的变化。 光学编码器可以以高分辨率检测模式工作，以一个第一间距形成光电检测器阵列，以检测精细间距图形和低分辨率检测模式，以第二间距形成光电检测器阵列，以检测粗略俯仰图案。

公开(公告)号：US08233357B2

公开(公告)日：2012-07-31

申请号：US12816411

申请日：2010-06-16

Applicant: Chul-woo Lee

Inventor： Chul-woo Lee

IPC: G11B11/00

CPC classification number: G11B5/59633 ,  B82Y10/00 ,  G01D5/34715 ,  G01D5/34746 ,  G11B5/743

Abstract: An encoder is capable of being used to compensate for the tilting of a movable object in an apparatus. The encoder includes a fixed scale, and a movable scale integrated with an object that moves during an operation of the apparatus and having a plurality of patterns that are out of phase from each other with respect to the direction of movement of the object. The encoder may be employed by a hard disk drive (HDD) and a servo track recording apparatus. The movable scale is integrated with an actuator arm of the HDD for positioning a read/write head of the HDD, and the fixed scale is fixed to the housing of the HDD. The servo track recording apparatus can use the encoder to record servo track information precisely on a disk.

Abstract translation: 编码器能够用于补偿装置中可移动物体的倾斜。 所述编码器包括固定刻度，以及与所述物体集成的可移动刻度，所述可移动刻度在所述装置的操作期间移动，并且具有相对于所述物体的移动方向彼此异相的多个图案。 编码器可以由硬盘驱动器（HDD）和伺服记录记录装置使用。 移动刻度盘与HDD的执行器臂集成，用于定位HDD的读/写头，固定刻度尺固定在HDD的外壳上。 伺服记录装置可以使用编码器将伺服轨道信息精确地记录在盘上。

公开(公告)号：US20120176629A1

公开(公告)日：2012-07-12

申请号：US13496588

申请日：2010-09-15

Applicant: Roy D. Allen ,  Mark A. Ritter

Inventor： Roy D. Allen ,  Mark A. Ritter

IPC: G01B11/14

CPC classification number: G01B11/14 ,  G01D5/34746 ,  G01D5/38

Abstract: The disclosure relates to a remote displacement sensor, such as an optical strain gauge, which uses an optical amplifier implemented by patterns, such as, but not limited to, moiré patterns, to calculate changes in position or gauge length. In the embodiment implemented as a strain gauge with moiré patterns, two foil layers are provided, a lower foil layer with a reference or static moiré pattern generated by the overlaying of a first pattern with parallel lines at a first fundamental frequency and a second pattern with parallel lines at a second fundamental frequency. The lower foil layer further includes a first section with a first pattern with parallel lines at the first fundamental frequency while the upper layer provides a second section with a second pattern with parallel lines at the second fundamental frequency. The overlaying of the foils causes an overlying of the first and second sections thereby causing a moiré pattern of the same wavelength as the reference pattern. However, relative movement of the two foils perpendicular to the parallel lines, in response to a movement in the gauge length in response to strain on the specimen, causes a phase change in the overlaid pattern which is greater than the relative movement. The image of the optical strain gauge is captured by a camera or other optical device and the resulting image is processed by a Fast Fourier Transform or similar algorithm to determine the phase change, thereby calculating the change in gauge length and therefore the resulting strain.

Abstract translation: 本公开涉及一种远程位移传感器，例如光学应变计，其使用由图案（例如但不限于）莫尔图案实现的光学放大器来计算位置或标距长度的变化。 在实施为具有莫尔图案的应变计的实施例中，提供了两个箔层，具有参考或静态莫尔图案的下箔层，其通过以第一基频叠加具有平行线的第一图案和第二图案， 平行线处于第二基频。 下箔层还包括第一部分，第一部分具有在第一基本频率处具有平行线的第一图案，而上层提供具有在第二基本频率处具有平行线的第二图案的第二部分。 箔的重叠导致第一和第二部分的覆盖，从而引起与参考图案相同波长的莫尔图案。 然而，响应于在标本长度上的响应于样品上的应变的两个垂直于平行线的箔的相对运动导致重叠图案中的相位变化大于相对运动。 光学应变仪的图像由相机或其他光学装置捕获，并且通过快速傅立叶变换或类似算法处理所得到的图像以确定相位变化，由此计算标距长度的变化，并因此计算所得应变。

公开(公告)号：US08208128B2

公开(公告)日：2012-06-26

申请号：US12366934

申请日：2009-02-06

Applicant: Susumu Makinouchi

Inventor： Susumu Makinouchi

IPC: G01B11/00 ,  G03B27/32 ,  G03B27/42 ,  G03B27/58 ,  G03B27/62

CPC classification number: G01D5/34746 ,  G01D5/38 ,  G03F7/70725 ,  G03F7/70775 ,  G03F7/7085

Abstract: A mirror block on which moving gratings are arranged is fixed to the lower surface of a stage. Fixed gratings are placed on the upper surface of a stage platform that is opposed to the lower surface of the stage. A Y encoder that measures Y positional information of the stage is configured including the moving gratings and the fixed gratings. Similarly, an X encoder that measures X positional information of the stage is configured including the moving gratings and the fixed grating.

Abstract translation: 安置有移动光栅的镜块固定在舞台的下表面。 固定光栅放置在与平台的下表面相对的平台平台的上表面上。 测量台的Y位置信息的Y编码器被配置为包括移动光栅和固定光栅。 类似地，测量台阶X的位置信息的X编码器被配置成包括移动光栅和固定光栅。

公开(公告)号：US20120026321A1

公开(公告)日：2012-02-02

申请号：US13262663

申请日：2009-04-03

Applicant: David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

Inventor： David Hasler ,  Peter Masa ,  Pascal Heim ,  Edoardo Franzi

IPC: H04N7/18

CPC classification number: G01D5/34746 ,  G01D5/24438 ,  G01D5/24452 ,  G01D5/24476 ,  G01D5/2449 ,  G01D5/2495 ,  G01D5/34792 ,  H03M1/0678 ,  H03M1/202 ,  H03M1/282

Abstract: A one-dimension position measurement system includes: a first ruler having a first one-dimension binary code si applied thereon, a camera for acquiring a picture of a portion of the code si, the portion having a length of I bits, and some processing elements. Each codeword of length I of the one-dimension code si is unique within the whole code si A codeword ai is read from the acquired picture, and the processing elements are implemented for computing an absolute position p of the codeword ai of the code si from: (I). An adhoc interpolation method is used to obtain a precision way below the distance between two bits of the codewords. The code si may be applied on the ruler by using some geometric primitives, a geometric primitive for encoding a “1” being different from a geometric primitive for encoding a “0”, both having the same horizontal projection. The horizontal projection is then used for fine interpolation, achieving nanometre-scale resolution.

Abstract translation: 一维位置测量系统包括：具有施加在其上的第一一维二进制码si的第一标尺，用于获取码si的一部分的图像的相机，具有I比特长度的部分以及一些处理 元素。 一维码si的长度为I的每个码字在整个码si内是唯一的。从所获取的图像中读取码字ai，并且实现处理元件以计算码si的码字ai的绝对位置p ： （一世）。 使用自适应插值方法来获得低于码字的两位之间的距离的精确方式。 代码si可以通过使用一些几何图元应用于标尺上，几何图元用于编码“1”与用于编码“0”的几何基元不同的几何图元，两者具有相同的水平投影。 然后将水平投影用于精细插值，实现纳米级分辨率。

公开(公告)号：US08035079B2

公开(公告)日：2011-10-11

申请号：US12595722

申请日：2008-04-08

Applicant: Jun Hane

Inventor： Jun Hane

IPC: G01D5/36 ,  G01B11/14

CPC classification number: G01D5/34746 ,  G01D5/38

Abstract: An optical encoder includes a scale, and a detecting head which is disposed facing the scale. The scale is provided with a grating which has a predetermined optical pattern with respect to a direction of relative movement, and the detecting head is provided with a light emitting section which irradiates predetermined light to the scale, and a light detecting section which detects a movement of a pattern of light distribution formed on a light receiving surface of a photodetector, by light reflected by the grating upon being irradiated to the scale from the light emitting section. A light transmitting member is disposed on a surface of the light emitting section and the photodetector of the detecting head, toward the scale, and a light propagation controlling pattern for controlling propagation of light is disposed on a surface of the light transmitting member, facing the scale.

Abstract translation: 光学编码器包括刻度尺和面向刻度盘的检测头。 该刻度尺设置有相对于相对移动方向具有预定光学图案的光栅，并且检测头设置有向规模照射预定光的发光部分，以及检测运动的光检测部分 通过在从发光部照射到标尺上时由光栅反射的光形成在光电检测器的光接收表面上的光分布图案。 透光部件设置在发光部的表面和检测头的光电检测器的标尺上，并且用于控制光的传播的光传播控制图案设置在透光部件的表面上，面对 规模。

公开(公告)号：US07943897B2

公开(公告)日：2011-05-17

申请号：US12139164

申请日：2008-06-13

Applicant: Norikazu Okada

Inventor： Norikazu Okada

IPC: G01D5/34

CPC classification number: G01D5/34746

Abstract: This optical encoder includes a light emitting section and a plurality of light receiving elements placed so as to be aligned in one direction in an area where a light beam from the light emitting section may reach. A moving object includes a light-ON section, a light-OFF section and an index pattern section. The light receiving element outputs a first light receiving signal when the light-ON section and the light-OFF section of the moving object pass through a predetermined position corresponding to the light receiving element. The light receiving element outputs a second light receiving signal when the index pattern section of the moving object passes through a predetermined position corresponding to the light receiving element. The output section outputs an incremental channel signal indicating movement information of the moving object based on the first light receiving signal while outputting an index channel signal indicating reference position of the moving object based on the second light receiving signal. The incremental channel signal and the index channel signal are out of phase with each other.

Abstract translation: 该光学编码器包括发光部和多个光接收元件，放置成在来自发光部的光束可以到达的区域中沿一个方向排列。 移动物体包括导光部分，光关断部分和索引图案部分。 当光接收部分和移动物体的熄灭部分通过对应于光接收元件的预定位置时，光接收元件输出第一光接收信号。 当移动物体的索引图案部分通过对应于光接收元件的预定位置时，光接收元件输出第二光接收信号。 输出部分基于第一光接收信号输出指示运动物体的运动信息的增量通道信号，同时基于第二光接收信号输出指示运动物体的基准位置的索引通道信号。 增量通道信号和索引通道信号彼此异相。

公开(公告)号：US07934657B2

公开(公告)日：2011-05-03

申请号：US12145877

申请日：2008-06-25

Applicant: David Douglas Martenson ,  David L. Knierim

Inventor： David Douglas Martenson ,  David L. Knierim

IPC: G02B26/10 ,  G06K7/10 ,  G06K9/22 ,  G06K19/06

CPC classification number: G01D5/3473 ,  G01D5/24409 ,  G01D5/34746 ,  G01D5/366

Abstract: An encoder home position sensing system and method is disclosed, which includes the use of an analog quadrature encoder reader and either a code wheel or a code strip. The code wheel possesses an optical track comprised of annular ring patterns, the thickness of which can be modulated by a sinusoidal function about the code wheel circumference, with one cycle of a sine wave corresponding to one encoder cycle. In one region of the optical track the amplitude of the sine function is changed to imbed an absolute reference home position. This region of the optical track can be sensed and used to determine an absolute system position. The linear code strip is similarly constructed with lines along the direction of motion, the thickness of which are modulated with a sine function, with one cycle of the sine wave corresponding to one encoder cycle, and the amplitude of the sine wave function changed to imbed an absolute reference home position in the optical track.

Abstract translation: 公开了一种编码器原位感测系统和方法，其包括使用模拟正交编码器读取器和码轮或代码条。 码盘具有由环形环图形组成的光学轨迹，其环形环的厚度可通过关于码盘圆周的正弦函数进行调制，正弦波的一个周期对应于一个编码器周期。 在光学轨迹的一个区域中，正弦函数的幅度被改变以嵌入绝对参考初始位置。 可以感测光轨的该区域并用于确定绝对系统位置。 线性码条类似地沿着运动方向的线构成，其厚度用正弦函数调制，正弦波的一个周期对应于一个编码器周期，正弦波函数的幅度变为嵌入 光轨中的绝对参考原位。