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公开(公告)号：US11683457B2
公开(公告)日：2023-06-20
申请号：US17507905
申请日：2021-10-22
Applicant: SEIKO EPSON CORPORATION
Inventor： Yoshiyuki Yanagisawa , Masatoshi Ito , Shinichi Wakabayashi
CPC classification number: H04N9/3152 , G02B26/0875
Abstract: An optical device includes an optical device including, a movable frame configured to hold an optical member, and a coupling frame to be coupled to the movable frame via an oscillation axis, and a stationary frame to which the coupling frame is fixed via a vibration absorbing member. The stationary frame has a shaft part to which the vibration absorbing member is attached, and a first surface and a second surface opposed to each other outside the shaft part, the coupling frame is disposed so as to be separated from the shaft part, the first surface, and the second surface with the vibration absorbing member, and a thickness of the vibration absorbing member existing between the coupling frame and the first surface and/or the second surface is thicker than a thickness of the vibration absorbing member existing between the coupling frame and the shaft part of the stationary frame.
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公开(公告)号：US11460756B2
公开(公告)日：2022-10-04
申请号：US17168737
申请日：2021-02-05
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi Wakabayashi , Masatoshi Ito , Takahiro Totsuka
IPC: G03B21/14 , G02B7/02 , H02K41/035
Abstract: A projector includes an optical path change device placed between a light modulation device and a projection optical device. The optical path change device has an optical member holding part that holds an optical member that a light modulated by the light modulation device enters, and a supporting member that swingably supports the optical member holding part. The supporting member is supported by a holding member that holds the light modulation device or the projection optical device.
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公开(公告)号：US20140354958A1
公开(公告)日：2014-12-04
申请号：US14284586
申请日：2014-05-22
Applicant: Seiko Epson Corporation
Inventor： Hiroshi Tsuchitani , Kenichi Asami , Masatoshi Ito
IPC: G03B21/16
CPC classification number: G03B21/16
Abstract: A projector includes a light source apparatus, a light modulator that modulates a light flux outputted from the light source apparatus in accordance with image information, a projection lens that projects the light flux modulated by the light modulator, an exterior enclosure that accommodates the light source apparatus, the light modulator, and the projection lens, an exhaust fan (first exhaust fan) that exhausts air inside the exterior enclosure out thereof through an exhaust port (first light source exhaust port) provided in the exterior enclosure, and a functional device (wireless device) that provides a predetermined function and is heated to a temperature higher than the temperature of the exhaust air from the first exhaust fan. The wireless device is disposed in a position downstream of the first exhaust fan, and part of the exhaust air discharged from the first exhaust fan flows to the wireless device.
Abstract translation: 投影机包括光源装置，根据图像信息调制从光源装置输出的光通量的光调制器，投影由光调制器调制的光束的投影透镜，容纳光源的外壳 装置，光调制器和投影透镜，排气风扇（第一排风扇），其通过设置在外壳中的排气口（第一光源排出口）排出外部外壳内的空气，以及功能装置 无线设备），其提供预定功能并且被加热到高于来自第一排气风扇的排出空气的温度的温度。 无线装置设置在第一排气风扇的下游位置，从第一排气风扇排出的排气的一部分流向无线装置。
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公开(公告)号：US11659147B2
公开(公告)日：2023-05-23
申请号：US17527613
申请日：2021-11-16
Applicant: SEIKO EPSON CORPORATION
Inventor： Toru Aoki , Shinichi Wakabayashi , Masatoshi Ito , Daigo Hokazono
CPC classification number: H04N9/315 , G02F1/1313 , H04N9/3111
Abstract: A liquid crystal projector includes a liquid crystal panel configured to generate a modulated image, a sensor configured to detect a temperature of the liquid crystal panel, an optical shift element configured to shift an emission optical path of the modulated image generated by the liquid crystal panel, and a control circuit configured to control a velocity of a shift in the optical shift element according to the temperature detected by the sensor.
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公开(公告)号：US11372237B2
公开(公告)日：2022-06-28
申请号：US17204553
申请日：2021-03-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi Wakabayashi , Masatoshi Ito
Abstract: A projector includes a light outputting apparatus that outputs video light, a projection system that enlarges and projects the video light, and an optical device disposed between the light outputting apparatus and the projection system. The optical device includes a movable section including a glass plate (optical section) having a light incident surface on which the video light is incident, a shaft section that swingably supports the movable section around a first swing axis, and an actuator that causes the movable section to swing. The cross-sectional shape of the shaft section viewed in the direction along the first swing axis is a shape having a plurality of recesses recessed inward.
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Patent Agency Ranking
公开(公告)号：US11886067B2
公开(公告)日：2024-01-30
申请号：US17530996
申请日：2021-11-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi Wakabayashi , Masatoshi Ito
IPC: G02F1/1335 , G01J1/04 , G02B26/08 , G02B19/00
CPC classification number: G02F1/1335 , G01J1/0411 , G02B26/08 , G02B19/0028
Abstract: An optical device includes an optical member having an optical area on which light incidents, the optical area having a rectangular shape in a plan view, a first actuator configured to displace the optical member around a first axis which passes through the center of the optical area in the plan view, and which forms an angle smaller than 90° with a first side of the optical area, and a second actuator configured to displace the glass plate around a second axis which passes through the center of the optical area, and which is perpendicular to the first axis.
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公开(公告)号：US09470960B2
公开(公告)日：2016-10-18
申请号：US14284586
申请日：2014-05-22
Applicant: Seiko Epson Corporation
Inventor： Hiroshi Tsuchitani , Kenichi Asami , Masatoshi Ito
IPC: G03B21/16
CPC classification number: G03B21/16
Abstract: A projector includes a light source apparatus, a light modulator that modulates a light flux outputted from the light source apparatus in accordance with image information, a projection lens that projects the light flux modulated by the light modulator, an exterior enclosure that accommodates the light source apparatus, the light modulator, and the projection lens, an exhaust fan (first exhaust fan) that exhausts air inside the exterior enclosure out thereof through an exhaust port (first light source exhaust port) provided in the exterior enclosure, and a functional device (wireless device) that provides a predetermined function and is heated to a temperature higher than the temperature of the exhaust air from the first exhaust fan. The wireless device is disposed in a position downstream of the first exhaust fan, and part of the exhaust air discharged from the first exhaust fan flows to the wireless device.
Abstract translation: 投影机包括光源装置，根据图像信息调制从光源装置输出的光通量的光调制器，投影由光调制器调制的光束的投影透镜，容纳光源的外壳 装置，光调制器和投影透镜，排气风扇（第一排风扇），其通过设置在外壳中的排气口（第一光源排出口）排出外部外壳内的空气，以及功能装置 无线设备），其提供预定功能并且被加热到高于来自第一排气风扇的排出空气的温度的温度。 无线装置设置在第一排气风扇的下游位置，从第一排气风扇排出的排气的一部分流向无线装置。
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公开(公告)号：US11874524B2
公开(公告)日：2024-01-16
申请号：US17531433
申请日：2021-11-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi Wakabayashi , Masatoshi Ito
CPC classification number: G02B7/102 , G02B7/023 , H04N23/687
Abstract: A method of driving an optical device is provided. The optical device including an optical member, a first actuator which displaces the optical member around a first axis, and a second actuator which displaces the optical member around a second axis perpendicular to the first axis. The method including exciting the first actuator by inputting a first drive signal to the first actuator, exciting the second actuator by inputting a second drive signal to the second actuator, and setting a value of the second drive signal to a value for substantially stopping exciting the second actuator in a period of the exciting the first actuator.
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公开(公告)号：US11720008B2
公开(公告)日：2023-08-08
申请号：US17698571
申请日：2022-03-18
Applicant: SEIKO EPSON CORPORATION
Inventor： Masatoshi Ito , Shinichi Wakabayashi , Yoshiyuki Yanagisawa
IPC: G03B21/14
CPC classification number: G03B21/145
Abstract: A projector according to an aspect of the present disclosure includes an optical path changer that is provided between an image formation unit and an projection optical unit and changes the optical path of image light from the image formation unit, a linkage frame that links the image formation unit and the projection optical unit to each other, and a vibration absorbing member that absorbs vibration generated by the optical path changer. The optical path changer includes a base member, an optical member, and a swing frame that supports the optical member and is swingably supported relative to the base member. The vibration absorbing member has vibration absorbing surfaces that are in contact with the base member of the optical path changer, and the vibration absorbing surfaces are in contact with support surfaces of the linkage frame to cause the support surfaces to support the optical path changer.
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公开(公告)号：US11262574B2
公开(公告)日：2022-03-01
申请号：US16701258
申请日：2019-12-03
Applicant: SEIKO EPSON CORPORATION
Inventor： Shinichi Wakabayashi , Masatoshi Ito
Abstract: A light path shifting device is provided with a glass plate which incident light enters, a first frame for holding the glass plate, a second frame for supporting the first frame in the state of being swingable around a first oscillation axis, a base member for supporting the second frame in the state of being swingable around a second oscillation axis crossing the first oscillation axis, a first actuator for oscillating the first frame, and a second actuator for oscillating the second frame, and is capable of shifting the light path of the incident light in a first direction and a second direction crossing the first direction by oscillating the first frame and the second frame to thereby change an incident angle of the incident light to the glass plate.
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