-
公开(公告)号：US20250044127A1
公开(公告)日：2025-02-06
申请号：US18844857
申请日：2023-03-03
Applicant: OFS Fitel, LLC
Inventor： Jie Li , Xiaoguang Sun , Paul S Westbrook
Abstract: A multicore fiber assembly in which multiple single-mode cores are coupled to form a single path. The assembly reduces the complexity of optical fiber sensor measurement and allows to keep back reflections low and measure various parameters such as fiber twist, temperature, axial strain, and fiber shape.
-
公开(公告)号：US20250004426A1
公开(公告)日：2025-01-02
申请号：US18828927
申请日：2024-09-09
Applicant: Apple Inc.
Inventor： Antonio F. Herrera , Erik G. de Jong , Jiahui Liang
Abstract: An electronic watch includes a housing and a crown assembly including a rotatable actuation member. The rotatable actuation member includes a knob external to the housing and configured to receive a rotational input and a shaft assembly coupled to the knob and positioned at least partially within the housing, the shaft assembly defining a sensing surface configured to rotate in response to the rotational input. The electronic watch further includes an optical sensing system configured to detect the rotational input, the detecting including directing light onto the sensing surface, receiving reflected light from the sensing surface, and producing a signal corresponding to a rotational motion of the sensing surface, the signal based at least in part on an interference between the light directed onto the sensing surface and the reflected light.
-
公开(公告)号：US20240159573A1
公开(公告)日：2024-05-16
申请号：US18549593
申请日：2022-03-15
Applicant: AMS SENSORS SINGAPORE PTE. LTD.
Inventor： Markus DANTLER , Laurent NEVOU , Jens GEIGER , Markus ROSSI , Ferran SUAREZ
Abstract: An apparatus may provide a control signal based on an axial position of a controller displaceable along an axis. The apparatus may include a component for displacement with said controller along said axis, a radiation source and detector arrangement configured to direct radiation towards a target region and generate a detector signal dependent upon radiation reflected from within that target region, and a computer processor configured to process said detector signal to determine a measure of distance or change of distance to a reflecting surface region within said target region, and to use said measure to provide said control signal. The component may define a reflecting surface that passes through said target region such that a reflecting surface region is present within said target region with a distance that varies with the axial position of the component along said axis.
-
公开(公告)号：US11860006B2
公开(公告)日：2024-01-02
申请号：US17960839
申请日：2022-10-06
Applicant: PixArt Imaging Inc.
Inventor： Ching-Lin Chung
CPC classification number: G01D5/30 , G01D5/34707 , G01P13/02
Abstract: An optical detection system includes a marker product and an optical encoding device. The marker product includes a substrate and at least one structural portion. The structural portion has a first surface, a second surface and a dividing axis. The first surface and the second surface are arranged on opposite sides of the dividing axis. A sidelong direction aligning the first surface with the second surface is parallel to a moving direction between the optical encoding device and the marker product. The optical encoding device is disposed adjacent by the marker product. The optical encoding device includes an optical projector and an optical encoder. The optical projector is configured to project the optical detecting signal onto the marker product. The optical encoder is configured to receive an optical reflecting signal from the marker product and encode intensity variation of the optical reflecting signal into digital data.
-
公开(公告)号：US20230125524A1
公开(公告)日：2023-04-27
申请号：US17974058
申请日：2022-10-26
Applicant: HEXAGON TECHNOLOGY CENTER GMBH
Inventor： Yves SALVADÉ , Markus SPRECHER , Peter KIPFER , Marcel ROHNER , Tim MAYER , Beat AEBISCHER
Abstract: An image based opto-electronic encoder for a joint, the encoder having a reading head for the first part of the joint and an optical system, comprising a ball lens for the second part of the joint. The ball lens has a front surface transparent for measuring light and an at least partially reflective, structured back surface. The ball lens has -with respect to the measuring light- a refractive index of at least approximately two or an equal radially varying refractive index, such that a bundle of measuring light rays reflected inside the ball lens from a point of the back surface of the ball lens forms at least approximately a parallel bundle after getting refracted at the front surface of the ball lens. The reading head and the ball lens are rotatable relative to each other in at least two degrees of freedom.
-
Patent Agency Ranking
公开(公告)号：US20230081307A1
公开(公告)日：2023-03-16
申请号：US17796178
申请日：2021-03-09
Applicant: Citizen Chiba Precision Co., Ltd. , CITIZEN WATCH CO., LTD.
Inventor： Kazunari OGATA , Shougo KIMURA , Kaori FUNATSU
Abstract: The range of operating angles of a position transducer is widened, and its signal-to-noise ratio is improved. The position transducer includes a light source and a detector including at least one pair of photodiodes (PDs) disposed on a predetermined circle. The detector receives light emitted from the light source to output a signal varying depending on the areas of regions where the light is received on two PDs forming a pair. The PDs are formed on separate chips, respectively, and the chips are disposed on a substrate so that one or more pairs of PDs surround the entirety of a predetermined region and have an annular shape as a whole.
-
公开(公告)号：US11521063B1
公开(公告)日：2022-12-06
申请号：US16717361
申请日：2019-12-17
Inventor： Michael J Powers , Peter Simonson
Abstract: A system and method for reducing laser communication terminal pointing uncertainty. The method trains an artificial neural network (ANN) with input data characterizing terminal pointing error and dependent parameters. The method inputs the trained ANN a set of data of these dependent parameters with unknown pointing error. The method uses the ANN output to apply corrections to the terminal pointing solution to reduce pointing uncertainty. The method can condition the ANN generated corrections to avoid cases where application of the ANN correction could exceed the original pointing uncertainty. This conditioning includes computing the Euclidean distance between current ANN input parameter values and values in the ANN training dataset, and bounding the allowed magnitude of the ANN pointing correction. The method can train the ANN incrementally during terminal operation for real-time updates or train the ANN offline with gathered data and implement the trained ANN on the terminal for subsequent links.
-
公开(公告)号：US11499848B2
公开(公告)日：2022-11-15
申请号：US15956730
申请日：2018-04-18
Applicant: PixArt Imaging Inc.
Inventor： Ching-Lin Chung
Abstract: An optical detection system includes a marker product and an optical encoding device. The marker product includes a substrate and at least one structural portion. The structural portion has a first surface, a second surface and a dividing axis. The first surface and the second surface are arranged on opposite sides of the dividing axis. A sidelong direction aligning the first surface with the second surface is parallel to a moving direction between the optical encoding device and the marker product. The optical encoding device is disposed adjacent by the marker product. The optical encoding device includes an optical projector and an optical encoder. The optical projector is configured to project the optical detecting signal onto the marker product. The optical encoder is configured to receive an optical reflecting signal from the marker product and encode intensity variation of the optical reflecting signal into digital data.
-
公开(公告)号：US20220314692A1
公开(公告)日：2022-10-06
申请号：US17221224
申请日：2021-04-02
Applicant: Shimano Inc.
Inventor： Azusa YAMAZAKI , Kazutaka NIKI , Takeshi UEDA
IPC: B60B27/00 , B60B27/02 , B60B27/04 , B62J45/413 , B62J45/423 , B62J45/20 , G01D5/245 , G01D5/30 , H02K7/18
Abstract: A hub is provided for a human-powered vehicle. The hub comprises a hub axle, a hub body, a sprocket support structure, a detected part and a rotation detection sensor. The hub axle has a center axis. The hub body is rotatably disposed around the center axis. The sprocket support structure is rotatably disposed around the center axis to transmit a driving force to the hub body while rotating in a driving rotational direction around the center axis. The detected part is provided to the sprocket support structure. The rotation detection sensor is configured to detect the detected part to detect rotation of the sprocket support structure around the center axis and being disposed in the hub body.
-
公开(公告)号：US11385080B2
公开(公告)日：2022-07-12
申请号：US16148542
申请日：2018-10-01
Applicant: Phaedrus, LLC
Inventor： Bradley W. Engstrand
Abstract: A system determines a position of a rotating object in a device and controls the device according to the determined position of the rotating object. The system includes a reflecting region on the rotating object and a light source located in the device. Emitted light is emitted by the light source onto the reflecting region and reflected light is reflected off the rotating object. The reflected light has an intensity. The system also includes a detector that detects the reflected light and measures the intensity of the reflected light. The reflecting region has a feature configured to effect a change in the intensity of the reflected light as the rotating object rotates. The change in the intensity of the reflected light corresponds to a change in a signal associated with a determined position of the rotating object. The device is controlled according to the determined position of the rotating object.
-
-
-
-
-
-
-
-
-
Search Results
538
records
(took 0.038 seconds)
