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公开(公告)号：US20230275497A1
公开(公告)日：2023-08-31
申请号：US18175626
申请日：2023-02-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
CPC classification number: H02K33/18 , H02K7/02 , B06B1/045 , B06B2201/30
Abstract: A vibration generation device includes: a base configured to transmit vibration to an object; a pendulum supported by the base swingably around a rotation axis; and a driving unit including a magnet, and a coil disposed to face the magnet in a non-contact manner, and configured to swing the pendulum. One member of the magnet and the coil is provided at a position on the pendulum away from the rotation axis. The base includes a support portion supporting the pendulum swingably around the rotation axis. A part of an extension surface of a facing surface of the support portion facing the pendulum is included in a swingable range of the pendulum. The support portion is provided outside the swingable range of the pendulum when viewed along the rotation axis.
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公开(公告)号：US20240295801A1
公开(公告)日：2024-09-05
申请号：US18593005
申请日：2024-03-01
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
CPC classification number: G03B21/142 , G02B26/101 , G02B27/646
Abstract: A projector includes an optical path shifter that shifts the optical path of image light with respect to a reference position where the image light is projected, a vibration detection sensor that detects vibration that affects the position where the image light is projected, and a vibration suppressor that is disposed at either the side of the optical path shifter on which the image light is incident or via which the image light exits and includes an optical member through which the image light passes, and the vibration suppressor swings the optical member based on the result of detection performed by the vibration detection sensor to change the optical path of the image light having entered the optical member in a direction in which the reverse phase of the phase of the vibration is produced.
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公开(公告)号：US20230314917A1
公开(公告)日：2023-10-05
申请号：US18175611
申请日：2023-02-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
CPC classification number: G03B21/142 , H02K33/18
Abstract: A vibration generation device includes: a base configured to transmit vibration to an object; a pendulum supported by the base swingably around a rotation axis; a first induction unit including a magnet, provided at an opposite-side end portion of the pendulum from the rotation axis, and configured to induce swing of the pendulum; and a first driving unit including a coil and configured to apply a driving force to the pendulum. The coil of the first driving unit faces the magnet of the first induction unit in a non-contact manner.
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公开(公告)号：US20230311160A1
公开(公告)日：2023-10-05
申请号：US18175619
申请日：2023-02-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
CPC classification number: B06B1/045 , F16F15/002 , F16F15/03 , G03B21/145 , H02K33/16
Abstract: A vibration generation device includes: a base configured to transmit vibration to an object; an arm provided at the base swingably around a rotation axis; and at least one driving unit including a magnet, and a coil disposed to face the magnet in a non-contact manner, and configured to swing the arm. One of the magnet and the coil is disposed at a position separated from the rotation axis at the arm. The arm includes a disposition portion provided at a position separated from the rotation axis at the arm, and a weight portion detachably attached to the disposition portion.
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公开(公告)号：US20240333893A1
公开(公告)日：2024-10-03
申请号：US18618440
申请日：2024-03-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
CPC classification number: H04N9/3185 , G03B21/142
Abstract: A projector includes an image formation apparatus, a projection optical apparatus that projects image light formed by the image formation apparatus, an optical path shifter that shifts the optical path of the image light with respect to a reference position where the image light is projected, a vibration detection sensor that detects vibration that affects the position where the projection optical apparatus projects the image light, and a control section that controls the optical path shifter, and the control section acquires the result of detection performed by the vibration detection sensor, generates a vibration waveform having a phase opposite the phase of the waveform of the vibration based on the acquired detection result, generates a drive waveform that approximates to the vibration waveform having the opposite phase, and drives the optical path shifter based on the generated drive waveform.
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Patent Agency Ranking
公开(公告)号：US20240210801A1
公开(公告)日：2024-06-27
申请号：US18393894
申请日：2023-12-22
Applicant: SEIKO EPSON CORPORATION
Inventor： Tatsuya TAKAHASHI , Takato UEMA , Masatoshi ITO
IPC: G03B21/14
CPC classification number: G03B21/142
Abstract: A pixel shifting device according to the present disclosure includes a first frame which is configured to hold an optical member, and which oscillates around a first oscillation axis, a second frame which is coupled to the first frame, and which oscillates around the second oscillation axis, a base to be coupled to the second frame, a first actuator for oscillating the first frame, a second actuator which is disposed in an area at a side at which the first actuator is disposed in the second frame, and which oscillates the second frame, and a frame reinforcement member which is disposed in an area at a side at which the first actuator and the second actuator are disposed in the second frame, and which has a first surface having contact with a surface of the second frame.
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公开(公告)号：US20230417549A1
公开(公告)日：2023-12-28
申请号：US18340055
申请日：2023-06-23
Applicant: SEIKO EPSON CORPORATION
Inventor： Hideyuki YAMADA , Hideo HANEDA , Shinichi WAKABAYASHI , Tatsuya TAKAHASHI
IPC: G01C19/5776
CPC classification number: G01C19/5776
Abstract: Provided is a physical quantity sensor attached to an electronic device provided with an actuator. The physical quantity sensor includes: a sensor element configured to output a detection signal corresponding to a physical quantity; and a circuit device configured to output an actuator drive signal for driving the actuator based on the detection signal. The circuit device has a resonance characteristic measurement mode of outputting the actuator drive signal for measuring a resonance characteristic of the electronic device by vibrating the electronic device, and a vibration-damping mode of outputting the actuator drive signal for reducing a vibration of the electronic device based on the resonance characteristic measured in the resonance characteristic measurement mode.
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8.发明公开公开(公告)号：US20240333898A1
公开(公告)日：2024-10-03
申请号：US18616601
申请日：2024-03-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi WAKABAYASHI , Tatsuya TAKAHASHI , Hideyuki YAMADA , Yasuhiro SUDO
CPC classification number: H04N9/3194 , G01H1/00
Abstract: A projector device includes: a projector supported in a suspended state by a supporting device; a vibration generation device that generates a vibration acting on at least one of the supporting device and the projector; a vibration detection device that detects a vibration of the projector; and a reporting device that compares a detection value detected by the vibration detection device with a reference value and gives a report when a reporting condition is satisfied.
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公开(公告)号：US20240248380A1
公开(公告)日：2024-07-25
申请号：US18417129
申请日：2024-01-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Tatsuya TAKAHASHI
CPC classification number: G03B21/142 , G03B33/12
Abstract: A pixel shifting device according to the present disclosure includes a first frame for holding an optical member, a second frame to be coupled to the first frame, a base to be coupled to the second frame, a pair of second oscillation shaft formation parts for coupling the second frame and the base to each other, and a pair of second actuators arranged across the second oscillation axis and for oscillating the second frame. The pair of second oscillation shaft formation parts include a one-side coupling shaft part for coupling the second frame and the base to each other at the actuator holding parts side, and another-side coupling shaft part for coupling the second frame and the base to each other at an opposite side to the actuator holding parts, and the another-side coupling shaft part is lower in rigidity than the one-side coupling shaft part.
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公开(公告)号：US20240210802A1
公开(公告)日：2024-06-27
申请号：US18393912
申请日：2023-12-22
Applicant: SEIKO EPSON CORPORATION
Inventor： Takato UEMA , Tatsuya TAKAHASHI , Masatoshi ITO
IPC: G03B21/14
CPC classification number: G03B21/142
Abstract: A pixel shifting device includes a first frame which holds an optical member, and which oscillates around a first oscillation axis, a second frame oscillating around a second oscillation axis, a base to be coupled to the second frame via a first coupling part, a pair of first oscillation shaft formation parts for coupling the first frame and the second frame, a first actuator for oscillating the first frame, and a second actuator for oscillating the second frame, wherein the second frame and the base have an extending part which extends along the second oscillation axis, and in which the second actuator is disposed, and the pair of first oscillation shaft formation parts have a pair of second coupling parts for coupling the first and second frames, and a pair of beams extending on the second frame respectively from the pair of second coupling parts along the second oscillation axis.
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