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公开(公告)号：US20240118114A1
公开(公告)日：2024-04-11
申请号：US18374180
申请日：2023-09-28
发明人： Roger INFANGER , Roger LEHMANN
IPC分类号： G01D5/347
CPC分类号： G01D5/34746 , G01D5/34715
摘要： A method for applying a measurement scale to a linear profile rail guide carriage surface, the guide carriage being guided on a guide rail linearly and longitudinally toward the guide rail and having a first side surface extending longitudinally, the measurement scale including at least one track extending linearly and longitudinally, including several mirror regions arranged alternately one behind the other, and marking regions, uses a pulsed laser to generate a laser beam and introduces a microstructure in a first region corresponding to at least one first side surface marking region. A sequence of light pulses is directed at the first region so that the laser beam is moved two-dimensionally relative to the first region to irradiate successively different subregions of the first region by the light pulses. Each different irradiated subregion has an overlap in, or transverse to, the longitudinal direction with at least two other irradiated subregions.
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公开(公告)号：US20230296412A1
公开(公告)日：2023-09-21
申请号：US18017109
申请日：2021-07-02
申请人： iC-Haus GmbH
发明人： Monir GALLOUCH
IPC分类号： G01D5/347 , H01L31/0203 , H01L31/173 , H01L31/18
CPC分类号： G01D5/34715 , H01L31/0203 , H01L31/173 , H01L31/18
摘要： A method for producing an optical position encoder including an optoelectronic component and a measuring scale which is illuminated by an LED light source of the optoelectronic component. The LED light source is molded not a mold housing such that a light outlet surface of the LED light source is outwardly exposed, and the light outlet surface has a coating and is uncoated in some regions in order to provide a light outlet window. The disclosure additionally relates to an optical position encoder including an optoelectronic component with a mold housing in which an LED light source is arranged such that a light outlet surface of the LED light source is outwardly exposed, the light outlet surface being coated and having an uncoated light outlet window, and including a measuring scale which is illuminated by the LED light source of the optoelectronic component.
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公开(公告)号：US20230236042A1
公开(公告)日：2023-07-27
申请号：US18129077
申请日：2023-03-31
申请人： PIXART IMAGING INC.
发明人： Chung-Min THOR , Kuan-Choong SHIM
IPC分类号： G01D5/347
CPC分类号： G01D5/34715
摘要： There is provided an optical encoder including an encoding medium and a substrate. The encoding medium has a relative movement with respect to the substrate in a predetermined direction. The substrate includes an index photodiode and two control photodiodes. The index photodiode is arranged between the two control photodiodes along the predetermined direction. The output signals of the two control photodiodes are for controlling ON/OFF of gain regulation on an output signal of the index photodiode so as to turn on the gain regulation within an interval during which the index photodiode does not generate an index pulse but to turn off the gain regulation within an interval during which the index photodiode generates the index pulse.
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公开(公告)号：US20230208412A1
公开(公告)日：2023-06-29
申请号：US18111602
申请日：2023-02-20
申请人： PixArt Imaging Inc.
发明人： SWEE-LIN THOR , GIM-ENG CHEW
CPC分类号： H03K5/24 , G01D5/34715 , H03K5/13 , G01D5/34792 , H03K2005/00052
摘要： There is provided an optical encoder including a phase shifter circuit, two multiplexers, two digital circuits and four comparators. The phase shifter circuit receives signals from an amplifier and outputs multiple phase shifted signals. Each of the two multiplexers receives a half of the multiple phase shifted signals and outputs two pairs of phase shifted signals, each pair having 180 degrees phase difference, respectively to two comparators connected thereto. Each of the two digital circuits controls the corresponding multiplexer to select the two pairs of phase shifted signals from the half of the multiple phase shifted signals.
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公开(公告)号：US11674825B2
公开(公告)日：2023-06-13
申请号：US17480636
申请日：2021-09-21
申请人： Apple Inc.
发明人： Xin Li , Damon R. Lemmon , David D. Dashevsky , Dianbo Guo , Peng Zhao , Ruonan Yang
IPC分类号： G01D5/347 , G06F3/03 , G06F3/0362
CPC分类号： G01D5/34715 , G01D5/3473 , G06F3/0312 , G06F3/0362
摘要： An electronic device is described. The electronic device may include a housing, a rotatable crown, and a self-mixing interferometry (SMI) sensor positioned within the housing. The rotatable crown may include an array of retroreflective surface features that reflect incident light back to a light source. Each retroreflective surface feature of the array of retroreflective surface features may be formed as a corner-cube with three perpendicular faces. The SMI sensor or associated processing electronics may compare originally emitted light with reflected light to identify a movement or distance of the rotatable crown with respect to the SMI sensor.
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公开(公告)号：US20190234770A1
公开(公告)日：2019-08-01
申请号：US16247800
申请日：2019-01-15
CPC分类号： G01D5/2457 , G01D5/24476 , G01D5/34715 , G01D5/3473 , G01D5/34792 , G01D5/38
摘要： Optical encoders and methods of determining rotational movement are provided. The optical encoders include an encoder disk having a patterned signal track comprising a plurality of optically detectable elements disposed on a periphery of the encoder disk, wherein each optically detectable element is associated with a bit in a binary sequence, wherein each bit has a predefined bit depth, a boundary dividing the patterned signal track into at least two sub-regions, wherein each sub-region comprises a subset of the optically detectable elements, at least one sensor arranged to detect an optical signal associated with at least one optically detectable element, and a controller in communication with the at least one sensor, the controller configured to determine an angular position of the encoder disk, wherein the controller determines the angular position based on a detected binary sequence, a detected sub-region, and a look-up-table.
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公开(公告)号：US20190120609A1
公开(公告)日：2019-04-25
申请号：US16154750
申请日：2018-10-09
CPC分类号： G01B11/026 , G01D5/344 , G01D5/34715 , G01D5/38
摘要： An optical position-measuring device for sensing a position of two relatively movable objects includes a scale connected to one object and having a measuring graduation. A scanning unit is disposed on the other object and has optical elements. An arrangement and design of the optical elements of the scanning unit results in a scanning beam path in which split and subsequently interfered sub-beams propagate mirror-symmetrically with respect to a plane of symmetry and either impinge on and/or are reflected back from the scale in a V-shape. The plane of symmetry is tilted by a defined tilt angle relative to the scale about an axis of rotation that is oriented parallel to a surface of the scale and extends perpendicular to the graduation direction. The sub-beams that are interfered are deflected at the measuring graduation into symmetric diffraction orders. The sub-beams travel identical optical path lengths between splitting and recombination.
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公开(公告)号：US20190078911A1
公开(公告)日：2019-03-14
申请号：US15743090
申请日：2016-02-25
申请人： NSK LTD.
CPC分类号： G01D5/34738 , G01D5/12 , G01D5/147 , G01D5/245 , G01D5/341 , G01D5/34715
摘要： A sensor manufacturing method is a method for manufacturing a sensor including a generator that generates a predetermined detection target, a detector that detects the detection target generated by the generator, and a motion body that performs motion in the area in between the generator and the detector. In the method, the generator and the detector are positioned opposite to each other by either curving or bending a substrate including a first portion having the generator installed thereon and a second portion having the detector installed thereon that are formed in an integrated manner, and the substrate and the motion body are made to perform relative movement in such a way that the motion body enters the area in between the generator and the detector.
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公开(公告)号：US20180367726A1
公开(公告)日：2018-12-20
申请号：US16010279
申请日：2018-06-15
申请人： CANON PRECISION INC.
发明人： Ryo SASAKI
CPC分类号： H04N5/23212 , G01D5/34715 , G06T7/73
摘要： An encoder includes a scale having a pattern column with patterns periodically changing a physical characteristic, a detection element array disposed movable relatively to the scale and including detection elements configured to detect light from the pattern column are arranged in a moving direction, a signal processor configured to convert an output signal from the detection element array into position information. The detection element array includes first to fourth detection elements are arranged in order of the first detection elements, the second detection elements, the first detection elements, the second detection elements, the third detection elements, the fourth detection elements, the third detection elements, and the fourth detection elements. The signal processor generates a first signal based on an output signal from the first and third detection elements and a second signal based on an output signal from the second and fourth detection elements.
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公开(公告)号：US20180292238A1
公开(公告)日：2018-10-11
申请号：US15943417
申请日：2018-04-02
申请人： Mitutoyo Corporation
发明人： Hiroatsu Mori
CPC分类号： G01D5/24457 , G01D3/08 , G01D5/206 , G01D5/2457 , G01D5/34715
摘要： Provided is an encoder that can sense an abnormality in the attitude of a detector with respect to a scale. An encoder includes a scale and a detector, the scale being provided on one measurement target part with marks arranged on the scale, and the detector being provided on another measurement target part and configured to detect an amount of relative movement with the scale. The scale includes a sensing unit that senses the attitude of the detector with respect to the scale, and thus even in a case where an abnormality in the attitude of the detector with respect to the scale cannot be sensed on the basis of a change in a signal read by a reading unit, the abnormality can nevertheless be sensed.
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