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公开(公告)号：US5889280A
公开(公告)日：1999-03-30
申请号：US786672
申请日：1997-01-21
申请人： Tatsuhiko Matsuura
发明人： Tatsuhiko Matsuura
摘要： A transmission type encoder is disclosed, which comprises a main scale, a light source that radiates collimated light to the main scale, and a photodiode array that also functions as an index scale. The main scale has a rectangular grating in which light transmitting portions and light non-transmitting portions are arranged at pitch P, and each width of the light transmitting portions is set to 2p/3, whereby a third harmonic distortion in an output signal can be removed.
摘要翻译： 公开了一种传输型编码器，其包括主刻度，将准直光照射到主刻度的光源以及也用作索引刻度的光电二极管阵列。 主刻度具有矩形光栅，其中透光部分和光非透射部分以间距P布置，并且光透射部分的每个宽度被设置为2p / 3，由此输出信号中的三次谐波失真可以是 删除。
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42.发明授权
公开(公告)号：US5828059A
公开(公告)日：1998-10-27
申请号：US707861
申请日：1996-09-09
申请人： Eric Udd
发明人： Eric Udd
CPC分类号： G01L1/246 , G01D5/35316 , G01D5/35335 , G01D5/35354 , G01D5/35387
摘要： A system and method to sense the application of transverse stress to an optical fiber which includes a light source that producing a relatively wide spectrum light beam. The light beam is reflected or transmitted off of an optical grating in the core of an optical fiber that is transversely stressed either directly or by the exposure to pressure when the fiber is bifringent so that the optical fiber responds to the pressure to transversely stress its core. When transversely stressed, the optical grating produces a reflection or transmission from the light beam that has two peaks or minimums in its frequency spectrum whose spacing and/or spread are indicative of the forces applied to the fiber. One or more detectors sense the reflection or transmissions from the optical grating to produce an output representative of the applied force. Multiple optical gratings and detectors may be employed to simultaneously measure temperature or the forces at different locations along the fiber.
摘要翻译： 感测横向应力对包括产生较宽光谱光束的光源的光纤的应用的系统和方法。 光纤被光纤的光纤反射或透射，该光栅在光纤的纤芯中直接受到横向应力，或者当纤维是双向的时被暴露在压力下，使得光纤响应压力横向应力其核心 。 当横向应力时，光栅产生来自光束的反射或透射，该光束在其频谱中具有两个峰值或最小值，其间距和/或扩展表示施加到光纤的力。 一个或多个检测器感测来自光栅的反射或传输以产生表示施加的力的输出。 可以使用多个光栅和检测器来同时测量沿着光纤的不同位置处的温度或力。
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公开(公告)号：US5798670A
公开(公告)日：1998-08-25
申请号：US863412
申请日：1997-05-27
申请人： Thomas A. Lee
发明人： Thomas A. Lee
摘要： A rotating surface optical sensing system having a radiation source controlled by a controlled current generator to emit electromagnetic radiation toward the rotating surface from which it can be directed to a radiation detector to provide corresponding signals to a threshold detector. The controlled current generator uses the threshold detector indications as to whether these signals are beyond a threshold value if validated by a rotation determiner noting rotations of the rotating surface to set the current for the radiation source. An amplifying filter is provided to amplify selected frequency components of the radiation detector output signals as a bandpass filter having a lower cutoff frequency such that relatively slowly varying optical ambient based signals are not amplified but signals from the radiation source directed from the surface to the detector are amplified. This is accomplished by repeatedly sampling the radiation detector output signals when the radiation source is not emitting, and again when it is emitting, and subtracting corresponding ones of such samples followed by integrating the differences so determined. Power supply noise occurring during emissions by the radiation source can be decoupled from the filter.
摘要翻译： 旋转表面光学感测系统具有由受控电流发生器控制的辐射源，以朝向旋转表面发射电磁辐射，从而可将辐射源引导到辐射探测器以向阈值检测器提供相应的信号。 如果通过旋转确定器验证旋转表面的旋转以设置辐射源的电流，则受控电流发生器使用阈值检测器指示这些信号是否超过阈值。 提供放大滤波器以将放射线检测器输出信号的选定频率分量放大为具有较低截止频率的带通滤波器，使得相对缓慢变化的基于光学环境的信号不被放大，但是来自辐射源的信号从表面指向检测器 被放大。 这是通过在辐射源不发射时重复地对辐射检测器输出信号进行采样，并且在发射时再次抽样，并且减去这些样本中的相应样本，然后对如此确定的差异进行积分。 辐射源发射期间发生的电源噪声可以与滤波器分离。
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公开(公告)号：US5774219A
公开(公告)日：1998-06-30
申请号：US786668
申请日：1997-01-21
申请人： Tatsuhiko Matsuura
发明人： Tatsuhiko Matsuura
摘要： A reflection-type main scale G1 is disposed on a first member 10. A diffused light source 40, a transmission-type light source index scale G2, and a photodiode array PDA are disposed on a second member 20. The diffused light source 40 irradiates the main scale G1 through the index scale G2 for generating a reflected image pattern. The photodiode array PDA detects the reflected image pattern obtained from the main scale G1. The photodiode array PDA and the index scale G2 are integrally united in such a manner that the receiving surface of the photodiode array PDA and the grating surface of the index scale G2 are aligned in a plane.
摘要翻译： 反射型主刻度G1设置在第一构件10上。扩散光源40，透射型光源指示标尺G2和光电二极管阵列PDA设置在第二构件20上。漫射光源40照射 通过用于产生反射图像图案的索引刻度G2的主刻度G1。 光电二极管阵列PDA检测从主刻度G1获得的反射图像图案。 光电二极管阵列PDA和指示标尺G2以使得光电二极管阵列PDA的接收表面和指示标尺G2的光栅表面在平面中对准的方式被一体地组合。
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公开(公告)号：US5759155A
公开(公告)日：1998-06-02
申请号：US909878
申请日：1997-08-12
申请人： Toyomi Miyagawa
发明人： Toyomi Miyagawa
CPC分类号： G01D5/36 , G01D5/34723 , G01D5/366
摘要： An optical rotary encoder device comprises a disk which has first and second sections differing in the amount of reflected light formed alternately on its entire periphery, the first sections being made up of high reflectivity sections in a specific angular portion in a 360-degree range and low reflectivity sections in the remaining angular portion in the 360-degree range, a light projection/reception section which is positioned so as to face the disk and projects and receives light onto and from the first and second sections on the disk, and rotating mechanism which rotates the disk and the light projection/reception section relatively.
摘要翻译： 光学旋转编码器装置包括盘，其具有在其整个周边上交替形成的反射光量不同的第一和第二部分，第一部分由360度范围内的特定角度部分的高反射率部分构成;以及 在360度范围内的剩余角度部分中的低反射率部分，被定位成面对盘并将光投射到光盘上的第一和第二部分上的光投射/接收部分，以及旋转机构 其相对地旋转盘和光投射/接收部。
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46.发明授权Optical encoder used for position detection based upon a plurality of signals 失效用于基于多个信号进行位置检测的光学编码器
公开(公告)号：US5750984A
公开(公告)日：1998-05-12
申请号：US589343
申请日：1996-01-22
申请人： Atsushi Ieki
发明人： Atsushi Ieki
CPC分类号： G01D5/36
摘要： An optical encoder comprising a first scale and photo sensitive elements that shift relative to the first scale along the length of the first scale for determining a relative position based on a plurality of signals having a predetermined phase difference from the photo sensitive elements. The optical encoder comprises groups of photo sensitive elements, wherein each group comprising a plurality of photo sensitive elements arranged side by side in the direction of the length, and wherein each photo sensitive element has a width corresponding to the width of the pattern of the first scale. The groups of photo sensitive elements corresponds respectively to the plurality of signals. The photo sensitive elements belonging to one photo sensitive element group and the photo sensitive elements belonging to the other photo sensitive element group are arranged side by side in a mixed fashion in the direction of the length. One photo sensitive element group and the other photo sensitive element group are arranged so that the signal derived from the one photo sensitive element group and the signal derived from the other photo sensitive element group have a predetermined phase difference therebetween.
摘要翻译： 一种光学编码器，包括第一刻度和光敏元件，其沿着第一刻度的长度相对于第一刻度移位，以基于具有与光敏元件的预定相位差的多个信号确定相对位置。 光学编码器包括一组光敏元件，其中每组包括在长度方向上并排布置的多个光敏元件，并且其中每个光敏元件具有对应于第一像素的图案的宽度的宽度 规模。 光敏元件组分别对应于多个信号。 属于一个光敏元件组的光敏元件和属于另一光敏元件组的光敏元件以长度方向以混合方式并排布置。 一个光敏元件组和另一个光敏元件组被布置成使得从一个光敏元件组导出的信号和从另一个感光元件组导出的信号之间具有预定的相位差。
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公开(公告)号：US5701525A
公开(公告)日：1997-12-23
申请号：US758338
申请日：1996-12-03
摘要： A camera shutter and focus encoder assembly comprises an encoder mask fixed in a camera housing and having an arcuate window having alternating opaque and transmissive portions, and an encoder sheet mounted in the housing in abutting relationship with the encoder mask, the encoder sheet being movable with exposure blades and the focus lens of the camera and having an arcuate window having alternating opaque and transmissive portions therein. Means are provided for pressing the encoder mask and the encoder sheet together with the mask and sheet windows in registration with each other. A sensor passes pulses of light through the mask and sheet windows when the transmissive portions thereof are in registration and detects the pulses of light, converts the light pulses to electrical signals, and transmits the electrical signals. A controller receives the electrical signals and determines therefrom the position and direction of movement of the shutter blades, compares the blade position and movement direction with a preselected program and sends to a motor a signal instructing any required compensating shutter blade movement change, and in like manner monitors the focus assembly and sends to the motor a signal instructing any required compensating lens movement change.
摘要翻译： 相机快门和对焦编码器组件包括：固定在相机外壳中并具有交替不透明部分和透射部分的弧形窗口的编码器掩模，以及安装在壳体中与编码器掩模邻接的编码器片，编码器片可与 曝光刀片和相机的聚焦透镜，并且具有在其中具有交替的不透明部分和透射部分的弧形窗口。 提供了用于将编码器掩模和编码器片与掩模和片材窗口一起按压对准的装置。 当传感器的透射部分对准并且检测到光脉冲时，传感器将光脉冲通过掩模和片状窗口，将光脉冲转换为电信号，并传输电信号。 控制器接收电信号并由此确定快门叶片的移动位置和方向，将刀片位置和移动方向与预选程序进行比较，并向马达发送指示任何所需的补偿快门叶片运动变化的信号，并以类似方式 方式监控聚焦组件，并向电机发送指示任何所需补偿镜头运动变化的信号。
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公开(公告)号：US5691923A
公开(公告)日：1997-11-25
申请号：US428671
申请日：1995-04-25
CPC分类号： G01B3/1061 , G01B2003/1069 , G01B2003/1094 , G01B3/1082
摘要： A digital measuring device is provided for electronically determining measured distances, such as the dimensions of people or objects, as an integral part of a comprehensive system for manipulating and/or recording the measurement data. The digital measuring system of the present invention includes a digital tape measure for transforming measured distances into electrical signals or representations, and a control and display means for manipulating and recording the data received from the digital tape measure into a useful format. The digital tape measure includes a measuring tape with regularly-spaced markers and an electronic sensing means for detecting the passage of the markers. The control and display means can be incorporated into the digital tape measure itself, or alternatively it can be a separate unit.
摘要翻译： 提供数字测量装置用于电子地确定测量距离，例如人或物体的尺寸，作为用于操纵和/或记录测量数据的综合系统的组成部分。 本发明的数字测量系统包括用于将测量的距离变换为电信号或表示的数字卷尺，以及用于将从数字卷尺接收的数据操作和记录为有用格式的控制和显示装置。 数字卷尺包括具有规则间隔标记的测量带和用于检测标记通过的电子感测装置。 控制和显示装置可以并入数字卷尺本身，或者可以是单独的单元。
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公开(公告)号：US5671052A
公开(公告)日：1997-09-23
申请号：US402637
申请日：1995-03-13
申请人： Isao Kawakubo , Eiji Yamamoto
发明人： Isao Kawakubo , Eiji Yamamoto
CPC分类号： G01D5/347
摘要： An optical encoder comprising a movable scale moving relatively to a light source, a surface-emitting semiconductor laser light-source for radiating a part of the movable scale, and a photodetector for receiving reflection light by the movable scale or transmission light through the movable scale.
摘要翻译： 一种光学编码器，包括相对于光源移动的可移动刻度，用于辐射可移动刻度的一部分的表面发射半导体激光源和用于通过可移动刻度或透射光接收反射光的光电检测器 。
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50.发明授权Displacement information detection apparatus, scale used in the apparatus, and drive apparatus using the apparatus 失效位移信息检测装置，装置中使用的标尺，以及使用该装置的驱动装置
公开(公告)号：US5663794A
公开(公告)日：1997-09-02
申请号：US601694
申请日：1996-02-15
申请人： Kou Ishizuka
发明人： Kou Ishizuka
CPC分类号： G01D5/38 , F02B2075/027
摘要： An apparatus for detecting displacement information is disclosed. The apparatus is provided with a scale arranged on the side of an object of which relative displacement information is to be detected, a periodic signal generation diffraction grating formed at a predetermined pitch, and a predetermined data recording portion formed independently of the periodic signal generation and diffraction grating for detecting displacement information, a first detection system for irradiating a light beam onto the periodic signal generation diffraction grating to generate diffracted light, the first detection system forming a periodic signal corresponding to a displacement relative to the scale by detecting interference light of the diffracted light generated by the periodic signal generation diffraction grating, and a second detection system for optically detecting the predetermined data recording portion. The predetermined data recording portion also has a diffraction grating.
摘要翻译： 公开了一种用于检测位移信息的装置。 该装置设置有布置在要检测相对位移信息的对象侧的刻度，以预定间距形成的周期性信号生成衍射光栅和独立于周期性信号产生形成的预定数据记录部分，以及 用于检测位移信息的衍射光栅，用于将光束照射到周期性信号产生衍射光栅上以产生衍射光的第一检测系统，所述第一检测系统通过检测所述衍射光的干涉光来形成对应于相对于标尺的位移的周期信号 由周期信号产生衍射光栅产生的衍射光，以及用于光学检测预定数据记录部分的第二检测系统。 预定数据记录部分也具有衍射光栅。
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