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公开(公告)号：US10038882B2
公开(公告)日：2018-07-31
申请号：US15120638
申请日：2015-02-27
Applicant: SEIKO EPSON CORPORATION
Inventor： Takanori Fukuyama , Hiroshi Nara , Kazunori Maeta , Kaname Nagatani
CPC classification number: H04N9/3194 , G03B21/145 , G03B21/20 , G03B21/2053 , G03B21/2066 , H04N9/3144 , H04N9/3164
Abstract: A projector and a method of controlling the projector that may give information on suitability of a light source. A projector includes light sources, light modulators (liquid crystal panels) that modulate lights output from the light sources, a projection optical device that projects the lights modulated by the light modulators, a determination unit that determines whether or not a light source unadapted to a mounting position of the projector is attached, and an informing unit (display control unit) that, if a determination that the light source unadapted to the mounting position of the projector is attached is made by the determination unit, gives information in response to a determination result.
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公开(公告)号：US20150268536A1
公开(公告)日：2015-09-24
申请号：US14641524
申请日：2015-03-09
Applicant: Seiko Epson Corporation
Inventor： Kaname Nagatani
CPC classification number: G03B21/142 , G03B21/16 , G03B21/2046 , G03B21/2066
Abstract: A projector includes an illumination unit which has an optical system including a light source apparatus, an image formation unit which has an optical system including a light modulator (liquid crystal panels), a projection unit which has an optical system including a projection lens, to which the image formation unit is coupled, and which is coupled to the illumination unit, and a base frame which fixes one of the illumination unit and the projection unit and holds the other shiftably in a direction parallel to a projection direction. In a case where the projection unit is fixed to the base frame, second fixing portions (projection unit fixing portions) of the projection unit are fixed, and first fixing portions (illumination unit fixing portions) of the illumination unit are shiftably held.
Abstract translation: 投影仪包括具有光学系统的照明单元，该光学系统包括光源装置，具有包括光调制器（液晶面板）的光学系统的图像形成单元，具有投影透镜的光学系统的投影单元， 耦合到照明单元的图像形成单元，以及固定照明单元和投影单元中的一个并将另一个可移动地保持在平行于投影方向的方向上的基架。 在投影单元固定到基架的情况下，投影单元的第二固定部（投影单元固定部）固定，照明单元的第一固定部（照明单元固定部）可移动地保持。
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公开(公告)号：US11460760B2
公开(公告)日：2022-10-04
申请号：US17161786
申请日：2021-01-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Kaname Nagatani , Osamu Katsuda
Abstract: A projector includes first and second cooling targets and a cooling device. The cooling device includes a first compressor, a condenser, a first expander, a first evaporator configured to change the working fluid into a working fluid in a gas phase by using heat of the first cooling target, a heat exchanger including a first flow path through which the working fluid from the first expander flows and a second flow path, a second expander configured to decompress the working fluid from the first flow path, a second evaporator configured to change the working fluid flowing into the second flow path into the working fluid in a gas phase by using heat of the second cooling target, and a second compressor. The heat exchanger cools the working fluid flowing through the first flow path by the working fluid flowing through the second flow path.
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公开(公告)号：US10648653B2
公开(公告)日：2020-05-12
申请号：US15767128
申请日：2016-10-13
Applicant: SEIKO EPSON CORPORATION
Inventor： Kaname Nagatani , Kazuya Usuda
IPC: F21V29/65 , F21V29/502 , F21S2/00 , F21V7/22 , G03B21/16 , H04N5/74 , F21V29/67 , F21V29/71 , F21V29/76 , F21V29/78 , G03B21/20
Abstract: A wavelength conversion device, an illumination device, and a projector that can efficiently cool a phosphor. A wavelength conversion device includes a substrate including a phosphor layer in which a phosphor is included, a rotating device configured to rotate the substrate, a circulating device that circulates a cooling gas to the substrate, and a housing configured to house the substrate and the circulating device. The housing includes a partition wall configured to separate a first space in which the cooling gas is circulated to the substrate by the circulating device and a second space in which the cooling gas radially delivered from the substrate according to the rotation of the substrate circulates.
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公开(公告)号：US20150268540A1
公开(公告)日：2015-09-24
申请号：US14638772
申请日：2015-03-04
Applicant: Seiko Epson Corporation
Inventor： Kaname Nagatani
CPC classification number: G03B21/145 , G03B21/005 , G03B21/16
Abstract: A projector includes an illumination unit having an optical system including a light source apparatus, an image formation unit having an optical system including liquid crystal panels, a projection unit having an optical system including a projection lens, and a base frame on which the illumination unit and the projection unit to which the image formation unit is coupled are disposed, and a gap is provided between the illumination unit and the projection unit.
Abstract translation: 投影机包括具有光学系统的照明单元，所述光学系统包括光源装置，具有包括液晶面板的光学系统的图像形成单元，具有投影透镜的光学系统的投影单元和基架，所述照明单元 并且配置有图像形成单元的投影单元，并且在照明单元和投影单元之间设置有间隙。
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Patent Agency Ranking
公开(公告)号：US11480858B2
公开(公告)日：2022-10-25
申请号：US17213330
申请日：2021-03-26
Applicant: SEIKO EPSON CORPORATION
Inventor： Kaname Nagatani
Abstract: A projector includes a first cooling target, a cooling device, and an exterior housing. The cooling device includes a first circulation device in which working fluid circulates, a second circulation device in which a liquid refrigerant circulates, and a heat exchanger in which both of the working fluid and the liquid refrigerant flow. The first circulation device includes a first compressor, a condenser, a first expander, and a first evaporator. The second circulation device includes a first heat receiver heat-transferably connected to the first cooling target. The heat exchanger includes a first channel in which the working fluid having flowed in the first expander flows, and a second channel in which the liquid refrigerant having flowed in the first heat receiver flows. The heat exchanger cools the liquid refrigerant flowing in the second channel with the working fluid flowing in the first channel.
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公开(公告)号：US09841664B2
公开(公告)日：2017-12-12
申请号：US15122041
申请日：2015-03-16
Applicant: Seiko Epson Corporation
Inventor： Kaname Nagatani
CPC classification number: G03B21/16 , F25B21/02 , F25B2321/0212 , F25B2321/0251 , F25B2600/11 , F25B2700/19 , F25B2700/2104 , G03B21/204 , G03B21/208 , H04N9/3144 , H04N9/3155 , H04N9/3191
Abstract: A cooling device that can maintain or improve a cooling ability without being affected by fluctuation in an ambient temperature. Gas is supplied to a cooling target to cool the cooling target. A cooling device includes a cooling gas including gas having thermal conductivity higher than the thermal conductivity of the air, a partition wall that closes and stores the cooling target and the cooling gas and is capable of circulating the cooling gas, a cooling section that cools and circulates the cooling gas, a pressure determining section that determines the pressure of the cooling gas, and a cooling control section that controls the cooling section. The cooling control section causes the cooling section to change the pressure of the cooling gas and/or change the circulation speed of the cooling gas on the basis of a result of the determination of the pressure determining section.
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公开(公告)号：US09733554B2
公开(公告)日：2017-08-15
申请号：US14638772
申请日：2015-03-04
Applicant: Seiko Epson Corporation
Inventor： Kaname Nagatani
CPC classification number: G03B21/145 , G03B21/005 , G03B21/16
Abstract: A projector includes an illumination unit having an optical system including a light source apparatus, an image formation unit having an optical system including liquid crystal panels, a projection unit having an optical system including a projection lens, and a base frame on which the illumination unit and the projection unit to which the image formation unit is coupled are disposed, and a gap is provided between the illumination unit and the projection unit.
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公开(公告)号：US11768427B2
公开(公告)日：2023-09-26
申请号：US17161835
申请日：2021-01-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Kaname Nagatani , Osamu Katsuda
CPC classification number: G03B21/16 , H05K7/20136 , H05K7/20309 , H05K7/20318 , H05K7/20354
Abstract: A projector includes first and second cooling targets and a cooling device. The cooling device includes a first compressor, a condenser, a first expander configured to decompress a part of the working fluid condensed by the condenser, a first evaporator configured to change the working fluid in a liquid phase flowing from the first expander into the working fluid in a gas phase by using heat from the first cooling target, a second expander configured to decompress the other part of the working fluid condensed by the condenser, a second evaporator configured to change the working fluid in a liquid phase flowing from the second expander into the working fluid in a gas phase by using heat from the second cooling target, and a second compressor configured to compress the working fluid in a gas phase flowing from the second evaporator.
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公开(公告)号：US11714342B2
公开(公告)日：2023-08-01
申请号：US17206278
申请日：2021-03-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Kaname Nagatani , Osamu Katsuda
CPC classification number: G03B21/16 , H04N9/3144
Abstract: A projector includes a first cooling target and a cooling device. The cooling device includes a first compressor configured to compress working fluid in a gas phase, a condenser configured to condense the working fluid in the gas phase into the working fluid in a liquid phase, a first expander configured to decompress the working fluid in the liquid phase, a first evaporator configured to change the working fluid flowed from the first expander to the working fluid in the gas phase with heat of a first cooling target and discharge the changed gas-phase working fluid to the first compressor, a first pipe connecting the first compressor and the condenser, a second pipe connecting the condenser and the first expander, and a base to which the first compressor, the condenser, and the first expander are fixed. The first pipe and the second pipe are provided in the base.
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