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公开(公告)号：US20180364480A1
公开(公告)日：2018-12-20
申请号：US16002012
申请日：2018-06-07
Inventor： HIROYUKI FURUYA , AKIRA KUROZUKA , YUTA YAMAMOTO , SUSUMU URAGAMI
CPC classification number: G02B27/0149 , B60K35/00 , B60K2370/334 , B60K2370/52 , G02B3/005 , G02B3/0068 , G02B26/0833 , G02B26/105 , G02B27/0101 , G02B2027/0118 , G02B2027/0159 , G02B2027/0185 , G09G3/025 , H04N9/3108 , H04N9/3129 , H04N9/3135 , H04N9/3155 , H04N9/3161 , H04N9/3164
Abstract: The image display device further includes a scanning unit that uses light from the light source to scan the movable screen and the fixed screen, and an optical system that uses light from the movable screen and the fixed screen to generate a virtual image, a drive unit that moves the movable screen, a structure body that supports the fixed screen at a fixed position such that the fixed screen is closer to the optical system than the movable screen is, and a magnetic cover that covers a movable part of the drive unit. The structure body covers an area around an opening of the magnetic cover to shield the movable part of the drive unit from stray light travelling backward via the optical system.
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公开(公告)号：US20180356632A1
公开(公告)日：2018-12-13
申请号：US15991708
申请日：2018-05-29
Inventor： HIROYUKI FURUYA , AKIRA KUROZUKA , YUTA YAMAMOTO , SUSUMU URAGAMI
CPC classification number: G02B27/0101 , G02B26/10 , G02B27/0149 , G02B2027/011 , G02B2027/0154
Abstract: The image display device includes a light source, screens on which images are formed by being irradiated with light from the light source, a scanning unit that scans the screens by using the light from the light source, an optical system that generates a virtual image by using light from the screens, and a drive unit that includes a holder for integrally supporting the screens and moves the screens together with the holder The screens are aligned in a direction perpendicular to a movement direction of the holder caused by the drive unit, and are installed at positions that are shifted from each other by a certain distance in the movement direction.
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公开(公告)号：US20180139418A1
公开(公告)日：2018-05-17
申请号：US15726449
申请日：2017-10-06
Inventor： HIROYUKI FURUYA , AKIRA KUROZUKA , YUTA YAMAMOTO , SUSUMU URAGAMI
CPC classification number: H04N9/3141 , G02B3/0043 , G02B26/0841 , G02B26/123 , G02B27/0031 , G02B27/0101 , G02B2027/0112 , G02B2027/0118 , G03B21/26 , G03B21/62 , H04N9/3135
Abstract: Image display device includes; light source; screen on which an image is drawn by being scanned two-dimensionally by laser light; scanner that causes the laser light to scan the screen; mirror drive circuit that chives scanner; and an optical system that generates a virtual image of the image drawn on screen. On screen, there are arranged a plurality of lens regions so as to be arranged individually in a first direction and a second direction perpendicular to the first direction, and mirror drive circuit sets a plurality of scan lines such that a pitch of the scan lines can become smaller than a pitch of lens regions in the second direction.
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公开(公告)号：US20180113307A1
公开(公告)日：2018-04-26
申请号：US15849799
申请日：2017-12-21
Inventor： KEN'ICHI KASAZUMI , TOSHIYA MORI , HIROAKI OKAYAMA , SATOSHI KUZUHARA , HIROYUKI FURUYA , HIROSHI GOTOU , AKIRA KUROZUKA
CPC classification number: G02B27/0101 , B60K35/00 , B60K2370/1529 , B60K2370/155 , B60K2370/334 , B60K2370/67 , G02B26/10 , G02B2027/0127 , G02B2027/014 , G02B2027/0141 , G02B2027/0154 , G02B2027/0159 , H04N9/3129 , H04N13/363 , H04N13/393
Abstract: The present invention provides a display device that can easily perform control for driving a movable screen. Display device includes light source that emits a light beam, scanner that causes the light beam from light source to scan, movable screen in which a first image is formed by transmitting the light beam from scanner, projection unit that projects the first image formed in movable screen on windshield and displays a virtual image of the first image in a space in front of windshield, and driver that causes movable screen to reciprocate in a first direction separating from scanner and in a second direction approaching scanner. Movable screen reciprocates in a posture inclined to moving directions of movable screen.
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公开(公告)号：US20170264872A1
公开(公告)日：2017-09-14
申请号：US15426041
申请日：2017-02-06
Inventor： SUSUMU URAGAMI , HIROYUKI FURUYA , TAKAHISA SHIRAMIZU , AKIRA KUROZUKA , YUTA YAMAMOTO
IPC: H04N9/31
CPC classification number: H04N9/3185 , G02B27/01 , G02B27/0101 , G02B2027/0127 , G02B2027/0145 , H04N9/3129
Abstract: An image display device includes a light source, a screen, an optical system, a screen driving mechanism unit, a memory unit, and a screen driving circuit unit. An image is formed on the screen by being irradiated with light from the light source. The screen driving mechanism unit moves the screen in an optical axis direction of the light. A smoothed movement profile is obtained by smoothing a movement profile used as a target for moving the screen so as to make a moving speed of the screen vary gently. The memory unit stores screen driving waveform information that has been generated so that the screen follows the smoothed movement profile. The screen driving circuit unit drives the screen driving mechanism unit, based on the screen driving waveform information stored in the memory unit.
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Patent Agency Ranking
公开(公告)号：US20170212347A1
公开(公告)日：2017-07-27
申请号：US15403408
申请日：2017-01-11
Inventor： SUSUMU URAGAMI , TAKAHISA SHIRAMIZU , AKIRA KUROZUKA , HIROYUKI FURUYA
CPC classification number: G02B27/0149 , G02B2027/0123 , G09G3/002 , G09G2380/10
Abstract: An image display device includes a light source, a screen, an optical system and a driving unit. The screen is irradiated with light from the light source to form an image. The optical system generates a virtual image with the light from the screen. The driving unit moves the screen in an optical axis direction. The driving unit includes a holder, one or more elastic members and a driving source. The holder holds the screen. The one or more elastic members support the holder so as to enable the holder to reciprocally move in the optical axis direction. The driving source generates force for moving the holder in the optical axis direction.
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公开(公告)号：US20190018239A1
公开(公告)日：2019-01-17
申请号：US16013981
申请日：2018-06-21
Inventor： AKIRA KUROZUKA , YUTA YAMAMOTO , SUSUMU URAGAMI , HIROYUKI FURUYA
Abstract: The disclosure provides a light source device and an image display device. The light source device includes a laser light source configured to emit laser light having a wavelength in a range from 635 nm to 645 nm inclusive, a temperature sensor configured to detect temperature around the light source device, and a laser control circuit configured to control the laser light source. The laser control circuit approximates, with use of a quartic expression, change in threshold current of the laser light source relative to temperature, and approximates, with use of a quadratic expression, change in slope efficiency of the laser light source relative to temperature, to obtain threshold current and slope efficiency of the laser light source corresponding to detection temperature of the temperature sensor, and controls the laser light source in accordance with the threshold current and the slope efficiency thus obtained.
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公开(公告)号：US20180374407A1
公开(公告)日：2018-12-27
申请号：US16001469
申请日：2018-06-06
Inventor： HIROYUKI FURUYA , AKIRA KUROZUKA , YUTA YAMAMOTO , SUSUMU URAGAMI
CPC classification number: G09G3/025 , B60K35/00 , B60K2370/333 , B60K2370/334 , B60K2370/52 , G02B27/0101 , G02B2027/011 , G03B21/602 , G03B21/625 , G09G3/001 , G09G2380/10 , H04N9/3108 , H04N9/3129 , H04N9/3135 , H04N9/3155 , H04N9/3161 , H04N9/3164
Abstract: Provided is an image display device capable of effectively enhancing image quality of a display image with a simple configuration. The image display device includes a light source, a screen configured to be two-dimensionally scanned with laser light to draw an image on the screen, a scanning unit configured to scan the screen with the laser light, a mirror drive circuit configured to drive the scanning unit, and an optical system configured to generate a virtual image of the image drawn on the screen. On the screen, a plurality of lens regions are arranged so as to individually line up in two directions different from each other. Rows of the lens regions in one of the two directions are inclined relatively at a predetermined inclination angle with respect to main scan directions of the laser light to the screen.
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公开(公告)号：US20180239140A1
公开(公告)日：2018-08-23
申请号：US15880783
申请日：2018-01-26
Inventor： SUSUMU URAGAMI , HIROYUKI FURUYA , AKIRA KUROZUKA , YUTA YAMAMOTO
CPC classification number: G02B27/0149 , B60K37/02 , B60K2370/155 , B60K2370/333 , B60K2370/334 , B60K2370/81 , G02B26/085 , G02B2027/0154 , H04N9/3129 , H04N9/3141 , H04N9/3164
Abstract: An image display device includes a light source, a screen, a scanning unit, an optical system, a drive unit, a support base, and a fixed base. The screen is irradiated with light from the light source, and an image is thus formed on the screen. The scanning unit scans the light from the light source along multiple scanning lines on the screen. The optical system forms a virtual image using the light from the screen. The drive unit moves the screen in an optical axis direction. The support base supports the drive unit. The fixed base supports the support base via a damper. The support base is supported by the fixed base such that the support base has support rigidity higher in a first direction in which a visual distance of a display image is changed in association with the movement of the screen than in directions other than the first direction.
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公开(公告)号：US20180157037A1
公开(公告)日：2018-06-07
申请号：US15738637
申请日：2016-06-01
Inventor： KEN'ICHI KASAZUMI , TOSHIYA MORI , HIROAKI OKAYAMA , SATOSHI KUZUHARA , HIROYUKI FURUYA , AKIRA KUROZUKA , SHINSUKE NAKAZONO
CPC classification number: G02B27/0101 , B60K35/00 , B60K2370/1529 , B60R2300/308 , G02B26/10 , G02B26/101 , G02B27/01 , G02B2006/0098 , G02B2027/0138 , G02B2027/014 , G02B2027/0154 , G02B2027/0183 , G06F2203/04803 , G06K9/00671 , G09G1/007 , G09G3/025 , G09G2310/0264
Abstract: A display device displays a virtual image of a first picture and a virtual image of a second picture by using a display medium. This display device includes a light source that emits light, a fixed screen, a movable screen, a driver, and a scanner. The fixed screen is fixedly disposed on an optical path between the light source and the display medium. The movable screen is also disposed on this optical path. The driver moves the movable screen along the optical path. The scanner scans the fixed screen and the movable screen with the light emitted from the light source, thereby forming the first picture on the fixed screen and the second picture on the movable screen.
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