公开(公告)号：US20170284793A1

公开(公告)日：2017-10-05

申请号：US15478250

申请日：2017-04-04

Applicant: DR. JOHANNES HEIDENHAIN GmbH

Inventor： Andreas Peterlechner

IPC: G01B11/14

CPC classification number: G01B11/14 ,  G01B11/04 ,  G01D5/34746 ,  G01D5/34753

Abstract: A length-measuring device includes a scanning carriage for scanning a measuring graduation that is to be guided longitudinally in the measurement direction on a guide surface. A coupling couples the scanning carriage to a drive dog rigidly in the measurement direction and resiliently transversely to the measurement direction. A first spring is disposed between a connecting element of the coupling and the drive dog and exerts a pressure force on the scanning carriage at a first position so as to press the scanning carriage against the guide surface. A second spring is disposed between the connecting element and the scanning carriage. The second spring is spaced apart from the first spring in the measurement direction and exerts a pressure force on the scanning carriage at a second position spaced apart from the first position in the measurement direction so as to press the scanning carriage against the guide surface.

公开(公告)号：US20170261351A1

公开(公告)日：2017-09-14

申请号：US15453232

申请日：2017-03-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Chihiro Nagura

IPC: G01D5/347 ,  G05B19/402 ,  G03F7/20 ,  G05B19/418

CPC classification number: G01D5/34707 ,  G01D5/34746 ,  G01D5/38 ,  G03F7/70616 ,  G03F7/70775 ,  G05B19/402 ,  G05B19/4182

Abstract: A position detection apparatus (100) includes a scale (20) including a reference position grating (22), a detector (10), a detection grating (19), and a signal processor (10), the signal processor acquires a relative reference position between the scale and the detector by using a light intensity distribution of a divergent light beam obtained via the reference position grating and the detection grating, the detection grating has a first spatial frequency that is offset by a predetermined frequency offset amount with respect to a local spatial frequency of an interference image from the reference position grating, the detection grating is provided in an optical path between the scale and a light receiver of the detector, and the light receiver detects a component of a second spatial frequency that is lower than the first spatial frequency in the light intensity distribution transmitting through the detection grating.

公开(公告)号：US09684159B2

公开(公告)日：2017-06-20

申请号：US13139551

申请日：2009-12-10

Applicant: Erik M. H. P. Van Dijk ,  Bas Hulsken ,  Cornelius A. Hezemans ,  Henricus R. M. Verberne

Inventor： Erik M. H. P. Van Dijk ,  Bas Hulsken ,  Cornelius A. Hezemans ,  Henricus R. M. Verberne

IPC: G02B21/36 ,  G01D5/347 ,  G02B21/24

CPC classification number: G02B21/367 ,  G01D5/34746 ,  G02B21/245

Abstract: A scanning microscope includes a stage for holding a sample, a scan mechanism, a probing system for probing a region of the sample, a position sensor, and a controller. The scan mechanism is configured to translate the stage between at least two axial positions. The probing system includes an optical element and a photosensor having a readout region, where the readout region extends in a direction which is transverse to an ideal orientation of the stage. The position sensor is configured to measure a transverse position of the stage and/or of an orientation of the stage. The controller is configured to adapt the probing system as a function of the measured transverse position and/or the measured orientation.

公开(公告)号：US20170074686A1

公开(公告)日：2017-03-16

申请号：US15262412

申请日：2016-09-12

Applicant: Mitutoyo Corporation

Inventor： Kimitoshi Ono

IPC: G01D5/347 ,  H04N5/225 ,  G02B3/00 ,  G02B13/22 ,  G02B5/18

CPC classification number: G01D5/34715 ,  G01D5/34746 ,  G02B3/0062 ,  G02B5/18 ,  G02B13/22 ,  H04N5/2256

Abstract: A photoelectric encoder of the present invention includes: a scale which includes a grid scale; a light emitting portion which irradiates light toward the scale; a light receiving portion which detects an image of the grid scale of the scale; and a telecentric optical unit which is provided between the scale and the light receiving portion and forms the image of the grid scale on the light receiving portion, wherein the telecentric optical unit includes a first optical element which is disposed near the scale, a second optical element which is disposed near the light receiving portion in relation to the first optical element and is disposed so that a gap is formed between the second optical element and the first optical element, and an aperture which is provided in at least one of a face near the second optical element in the first optical element and a face near the first optical element in the second optical element.

Abstract translation: 本发明的光电编码器包括：包括栅格的刻度; 将光朝规模照射的发光部; 光接收部分，其检测标尺的网格尺度的图像; 以及远心光学单元，其设置在所述刻度尺和所述光接收部之间，并且在所述光接收部分上形成所述格栅的图像，其中所述远心光学单元包括设置在所述刻度附近的第一光学元件，第二光学单元 元件，其相对于第一光学元件设置在光接收部分附近，并且被布置成使得在第二光学元件和第一光学元件之间形成间隙，并且孔被设置在靠近 第一光学元件中的第二光学元件和第二光学元件中的第一光学元件附近的面。

公开(公告)号：US09557193B2

公开(公告)日：2017-01-31

申请号：US14575027

申请日：2014-12-18

Applicant: Mitutoyo Corporation

Inventor： Yoshiaki Kato

IPC: G01D5/34 ,  G01D5/347

CPC classification number: G01D5/34707 ,  G01D5/34715 ,  G01D5/34746

Abstract: An optical encoder according to the present invention includes a light source that emits light; a scale including scale gratings each having a predetermined pitch; a light source grating disposed between the light source and the scale and having a predetermined pitch; and an interference fringe detector that detects an interference fringe generated by the light source grating and the scale. The scale gratings are disposed side by side, and the adjacent scale gratings are displaced from each other by a ½ period.

Abstract translation: 根据本发明的光学编码器包括发光的光源; 尺度包括每个具有预定间距的刻度光栅; 光源光栅，设置在所述光源和所述标尺之间并具有预定的间距; 以及干涉条纹检测器，其检测由光源光栅和刻度产生的干涉条纹。 刻度光栅并排布置，并且相邻的刻度光栅彼此相移一个半周期。

公开(公告)号：US20160258785A1

公开(公告)日：2016-09-08

申请号：US15045027

申请日：2016-02-16

Applicant: CANON PRECISION INC.

Inventor： RYO SASAKI

IPC: G01D5/347

CPC classification number: G01D5/34707 ,  G01D5/34715 ,  G01D5/3473 ,  G01D5/34746 ,  G01D5/34776

Abstract: An origin detector includes detecting element groups having a first to a fourth detector, is configured so that a first signal sensitivity of the detectors of a center is larger than a second signal sensitivity of the detectors of a periphery, reads an origin detecting pattern including an origin pattern having a length along a detecting direction of a part having a physical characteristic different from an origin peripheral part larger than a length along the detecting direction of each detecting element group, and outputs a first signal using the first and third detectors, and a second signal using the second and fourth detectors. A processor acquires a third signal from the first signal and a first threshold, and a fourth signal from the second signal and a second threshold, and outputs a fifth signal using the third and fourth signals as an origin signal.

Abstract translation: 原点检测器包括具有第一至第四检测器的检测元件组，被配置为使得中心的检测器的第一信号灵敏度大于外围检测器的第二信号灵敏度，读取包括 原点图案沿着具有与沿着每个检测元件组的检测方向的长度大的原点周边部分的物理特性的部分的检测方向的长度，并且使用第一和第三检测器输出第一信号，并且 使用第二和第四检测器的第二信号。 处理器从第一信号和第一阈值获取第三信号，并从第二信号和第二阈值获取第四信号，并且使用第三和第四信号作为原始信号输出第五信号。

公开(公告)号：US09306623B2

公开(公告)日：2016-04-05

申请号：US14469717

申请日：2014-08-27

Applicant: CEDES AG

Inventor： Beat De Coi ,  Christian E. Thöny ,  Tobias Leutenegger ,  Jan Giger

IPC: G01B3/10 ,  B66B1/34 ,  H04B3/54 ,  B66B7/06 ,  B66B13/22 ,  G01D5/347 ,  H04B3/60

CPC classification number: H04B3/54 ,  B66B1/3492 ,  B66B7/064 ,  B66B13/22 ,  G01D5/34746 ,  H04B3/60

Abstract: A measurement tape is proposed for determining the position of a cab in an elevator shaft, wherein the measurement tape is situated vertically in the elevator shaft, and extends over at least two floors, and wherein the measurement tape includes a marking unit for marking at least two positions in the elevator shaft, wherein the marking unit runs along the length of the measurement tape. In order to improve servicing, the measurement tape includes a carrier tape and has a transmission device for transmitting information, wherein the transmission device includes at least one communication line for transmitting an information signal and/or at least one supply line for supplying power, and the at least one communication line/supply lines runs along the length of the measurement tape, wherein the communication line is designed as an electrical line for transmitting an electrical signal or as a fiberglass line for transmitting an optical signal.

Abstract translation: 提出了一种用于确定电梯井中的驾驶室的位置的测量带，其中测量带垂直地位于电梯井中，并且在至少两个楼层上延伸，并且其中测量带包括用于至少标记的标记单元 电梯井中的两个位置，其中标记单元沿测量带的长度延伸。 为了改进服务，测量带包括载带，并具有用于发送信息的传输装置，其中传输装置包括用于发送信息信号的至少一条通信线路和/或用于供电的至少一条电源线，以及 所述至少一个通信线路/供应线沿着所述测量带的长度延伸，其中所述通信线路被设计为用于传输电信号的电线或作为用于发送光信号的玻璃纤维线。

公开(公告)号：US09234772B2

公开(公告)日：2016-01-12

申请号：US13678956

申请日：2012-11-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hitoshi Nakamura ,  Chihiro Nagura

IPC: G01D5/347 ,  G01D5/244

CPC classification number: G01D5/34707 ,  G01D5/24438 ,  G01D5/347 ,  G01D5/34746

Abstract: The optical encoder includes a scale provided with a periodic pattern in which an optical portion is periodically formed with a first period in a first direction, and a light receiver movable relatively with the scale in the first direction and photoelectrically converts a detection light from a light source and then passing through the optical portions. The optical portion periodically has a pattern, which is formed by pattern portions mutually adjacent in a second direction orthogonal to the first direction and mutually shifted in the first direction, in the second direction with a second period of t. A width w of the light source in the second direction satisfies w=(a+b)/b·nt where n represents a natural number, and a:b represents a ratio of a distance from the light source to the periodic pattern and a distance from the periodic pattern to the light receiver.

Abstract translation: 光学编码器包括具有周期性图案的刻度，其中光学部分在第一方向上以第一周期形式周期性地形成，以及光接收器，其可相对于第一方向上的刻度尺移动并且光电转换来自光的检测光 然后通过光学部分。 光学部分周期性地具有图案，该图案由与第一方向正交的第二方向相互相邻并且在第二方向上在第一方向上相互移位的图案部分以第二周期t形成。 光源在第二方向上的宽度w满足w =（a + b）/ b·nt，其中n表示自然数，a：b表示从光源到周期性图案的距离和 从周期性图案到光接收器的距离。

公开(公告)号：US20150300847A1

公开(公告)日：2015-10-22

申请号：US14689329

申请日：2015-04-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ko Ishizuka

IPC: G01D5/347

CPC classification number: G01D5/34776 ,  G01D5/24466 ,  G01D5/24471 ,  G01D5/24495 ,  G01D5/2455 ,  G01D5/2492 ,  G01D5/2495 ,  G01D5/34715 ,  G01D5/34746 ,  G01D5/34792

Abstract: There is provided an absolute encoder advantageous in accuracy of an output thereof against a defect in a scale thereof. In the absolute encoder, a detector detects a part of an array of marks of the scale, and outputs a data sequence corresponding to the part. A processor stores information indicating a correspondence between each of a plurality of code sequences and an absolute coordinate of motion of the scale, and outputs information of the absolute coordinate based on the data sequence and the information. The processor detects an error of the data sequence, and performs rewriting of the information based on the detected error.

Abstract translation: 提供了一种对于其输出的精度有优势的绝对编码器，其比例尺的缺陷。 在绝对编码器中，检测器检测标尺的标记阵列的一部分，并输出与该部分对应的数据序列。 处理器存储指示多个代码序列中的每一个与标尺的绝对运动坐标之间的对应关系的信息，并且基于数据序列和信息输出绝对坐标的信息。 处理器检测数据序列的错误，并且基于检测到的错误来执行信息的重写。

公开(公告)号：US09121733B2

公开(公告)日：2015-09-01

申请号：US14471724

申请日：2014-08-28

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takurou Asano

IPC: H04N1/04 ,  G01D5/347 ,  H04N1/00

CPC classification number: G01D5/34707 ,  G01D5/34715 ,  G01D5/34746 ,  G01D5/34792 ,  H04N1/00013 ,  H04N1/00015 ,  H04N1/00037 ,  H04N1/00045

Abstract: A position detector, includes: a scale having first and second patterns having respective first and second period; a detector array including elements each detecting energy intensities based on the patterns; a generator configured to generate first and second signals having phases different from each other obtained based on the patterns respectively; and a deriver deriving a position of the array relative to the scale based on the signals, wherein the scale is movable relative to the array; the deriver derives a reference position as a detection element array position relative to the scale based on the signals, performs a first process to derive a array position relative to the scale by a array displacement relative to the reference position is derived based on the first signals, and performs a second process in which a relative array position is derived based on the position derived by the first process.

Abstract translation: 一种位置检测器，包括：具有第一和第二图案的刻度，具有相应的第一和第二周期; 检测器阵列，其包括基于所述图案检测能量强度的元件; 发生器，被配置为产生分别基于所述图案获得的彼此相位不同的第一和第二信号; 以及基于所述信号导出所述阵列相对于所述刻度的位置的引流，其中所述刻度相对于所述阵列是可移动的; 导出器基于信号将参考位置作为相对于刻度的检测元件阵列位置导出，基于第一信号导出执行相对于标尺的阵列位置相对于参考位置的阵列位移的第一处理 并且执行基于由第一处理导出的位置导出相对阵列位置的第二处理。