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公开(公告)号：US10225541B2
公开(公告)日：2019-03-05
申请号：US15656409
申请日：2017-07-21
申请人： Tianma Japan, Ltd.
发明人： Kazunori Masumura , Tetsushi Sato , Koji Shigemura
IPC分类号： H04N13/128 , G02B27/22 , H04N13/305 , H04N13/327 , H04N13/398 , H04N13/363 , H04N13/366 , H04N13/31
摘要： A stereoscopic display apparatus includes: a projector of a planar shape that projects images by using light acquired by dividing light rays; an optical device of a planar shape that outputs incident light incident from a first face from a second face; and a supporting unit that supports at least one of the projector and the optical device to be in a first state or a second state in an orthogonal three-dimensional coordinate system. The optical device outputs incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference.
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公开(公告)号：US11758118B2
公开(公告)日：2023-09-12
申请号：US17075027
申请日：2020-10-20
发明人： Kazunori Masumura , Tetsushi Sato
IPC分类号： H04N13/376 , H04N13/302 , H04N13/368
CPC分类号： H04N13/376 , H04N13/302 , H04N13/368
摘要： A control system is configured to acquire an image captured by an imaging device, and display a stereoscopic image on a display apparatus based on a position of an observer detected in a predetermined tracking area in the acquired image. The tracking area is a part of an area in which an observer is trackable and the tracking area includes a stereoscopic viewing zone in which a stereo image can be recognized from the stereoscopic image. The control system is further configured to display a stereoscopic image for a predetermined time based on a position at which the observer is detected last after the detected observer has become untrackable in the tracking area, and display a stereoscopic image suitable for a predetermined position in the stereoscopic viewing zone in a case where no observer is detected in the tracking area over the predetermined time.
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公开(公告)号：US11243410B2
公开(公告)日：2022-02-08
申请号：US16857433
申请日：2020-04-24
申请人： Tianma Japan, Ltd.
发明人： Tetsushi Sato , Kazunori Masumura , Koji Shigemura
IPC分类号： G02B30/27 , H04N13/363 , G03B21/606 , G03B35/24
摘要： A display device comprises a projection device projecting a display image, an aerial imaging element, and a distribution mechanism in which distribution units are arranged at a given interval. An interval between the distribution units is determined according to a relationship between a number of view point pixels constituting a pixel unit, a number of pixel units, a distance from the pixel unit at a center to the pixel unit at an edge, a distance from a distribution unit at a center to the distribution unit at an edge, a pitch of the view point pixel, an angle of light from the pixel unit at the center emitted to the distribution unit, and an angle of the emitted light, an angle of light from the pixel unit at the edge emitted to the distribution unit, and an angle of the emitted light, a distance between the projection device and the distribution units, a refractive index of the distribution mechanism, a distance between the real image and an optimal viewing position for a viewer, and a projection width.
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公开(公告)号：US10908473B2
公开(公告)日：2021-02-02
申请号：US16215117
申请日：2018-12-10
申请人： Tianma Japan, Ltd.
摘要： A light beam direction control device is provided with a transparent substrates in which main surfaces of the transparent substrate are opposed to each other, transparent conductive films respectively disposed on the main surface side of the transparent substrate, electrodes electrically connected to the transparent conductive films, a control circuit for controlling a potential difference between the transparent conductive films and a plurality of light beam transmitting regions arranged on the transparent substrates, light beam absorbing regions disposed between the adjacent light beam transmitting regions, and the transparent conductive films. When shifting the range of outgoing direction of light beam to a narrow state, the control circuit applies the electrodes electrically open and holds the open state.
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公开(公告)号：US11303879B2
公开(公告)日：2022-04-12
申请号：US16859542
申请日：2020-04-27
申请人： Tianma Japan, Ltd.
发明人： Kazunori Masumura , Tetsushi Sato
IPC分类号： G02B30/56 , G02B30/27 , G02B30/32 , H04N13/322 , H04N13/302 , H04N13/305
摘要： A display device, including: an optical system including an aerial imaging element, and a reflective member having a mirror surface that reflects light, wherein the reflective member is arranged so as to reflect first entering light to emit to the aerial imaging element as second entering light, the first entering light is emitted from a projected object and is reflected by the aerial imaging element, and wherein the aerial imaging element reflects the first entering light so as to form a first real image in a position that is in plane symmetry with the projected object with respect to a plane in which the aerial imaging element is formed; and reflects the second entering light so as to form a second real image in a position that is in plane symmetry with a virtual image of the first real image formed by the reflective member with respect to the plane.
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公开(公告)号：US10791594B2
公开(公告)日：2020-09-29
申请号：US16697511
申请日：2019-11-27
申请人： TIANMA JAPAN, LTD.
IPC分类号： H05B39/04 , G02B5/30 , H05B47/105
摘要： A control circuit is configured to: change a dispersion state of the electrophoretic particles by controlling voltage across the first transparent electrode and the second transparent electrode to change a range of exit direction of light transmitted through the light transmissive regions and the dispersion medium; apply direct voltage at a first voltage value across the first transparent electrode and the second transparent electrode to change the range of exit direction from a narrow range to a wide range; measure luminance of light transmitted through the light beam direction control panel during application of the voltage at the first voltage value; and increase the voltage value to be applied across the first transparent electrode and the second transparent electrode in a case where the measured luminance of the transmitted light is lower than a target value.
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