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公开(公告)号：US20250013052A1
公开(公告)日：2025-01-09
申请号：US18887381
申请日：2024-09-17
Inventor： Satoshi KUZUHARA , Akira HASHIYA , Kazuhiro MINAMI
Abstract: The optical system includes: a light guide for guiding an image light ray to a field of view region of a user as a virtual image. The light guide includes a diffraction structure region constituting a surface-relief diffraction grating dividing the image light ray propagating in a first propagation direction intersecting a thickness direction of a body into a plurality of image light rays propagating in a second propagation direction intersecting the first propagation direction, in the first propagation direction. The diffraction structure region includes a first diffraction structure, and a second diffraction structure on an opposite side of the first diffraction structure from an in-coupling region in the first propagation direction. A grating height of the first diffraction structure is greater than a grating height of the second diffraction structure. A grating width of the first diffraction structure is greater than a grating width of the second diffraction structure.
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公开(公告)号：US20240019621A1
公开(公告)日：2024-01-18
申请号：US18373753
申请日：2023-09-27
Inventor： Keiji SUGIYAMA , Ken'ichi KASAZUMI , Yukihiro CHOKYU , Satoshi KUZUHARA , Kazuhiro MINAMI
CPC classification number: G02B6/0041 , G02B6/0076 , G02B5/32 , G02B6/0031
Abstract: A light guide plate includes a hologram element that is a first hologram element including two or more diffraction cells, and a hologram element that is a second hologram element including a single diffraction cell.
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公开(公告)号：US20230393395A1
公开(公告)日：2023-12-07
申请号：US18236050
申请日：2023-08-21
Inventor： Kazuhiro MINAMI , Satoshi KUZUHARA
CPC classification number: G02B27/0103 , G02B27/0081 , G02B2027/013
Abstract: A head-up display system includes a display that emits a light flux visually recognized by an observer as the virtual image, and a light guide body that guides the light flux to the light-transmitting member. The light guide body includes an incident surface on which the light flux from the display is incident and an emission surface from which the light flux is emitted from the light guide body. The light flux incident on the incident surface of the light guide body is changed in a traveling direction in the light guide body, the light flux is replicated into a plurality of light fluxes in a direction perpendicular to a horizontal direction of the virtual image visually recognized by the observer to be emitted from the emission surface so as to expand a visual recognition region.
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公开(公告)号：US20230073556A1
公开(公告)日：2023-03-09
申请号：US17988156
申请日：2022-11-16
Inventor： Kazuhiro MINAMI , Hiroaki OKAYAMA
Abstract: A head-up display system displays a virtual image superimposed on a real view that can be visually recognized through a window part. The head-up display system includes a display part, an optical system, a light source part, an operation part, and a controller. The controller controls a display area of the display part in accordance with an operation of the operation part by the observer. The light flux emitted from the display part is reflected by the window part and reaches a visually recognizable area where the observer can visually recognize the virtual image. The light emitted from the light source part is reflected inside an area where the light flux is reflected by the window part and reaches the visually recognizable area. The virtual image and the light from the light source part are superimposed, and can be visually recognized.
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公开(公告)号：US20230019596A1
公开(公告)日：2023-01-19
申请号：US17950606
申请日：2022-09-22
Inventor： Yoshiteru MINO , Hideki TAKAHASHI , Masaki TADA , Toshiya MORI , Hiroaki OKAYAMA , Kazuhiro MINAMI
Abstract: Imaging and display system includes: a display; an optical system including a first mirror and a second mirror; a housing; a light-transmissive cover transparent to light and disposed to cover at least part of an opening of the housing; and a driver monitoring camera supported by a supporting body connected outside of the housing. First light emitted from the display passes through the light-transmissive cover via the optical system, and is reflected by a windshield toward a direction of the user. The driver monitoring camera captures an image of a driver shown on the light-transmissive cover by second light from a direction of the driver reflected by the windshield toward a direction of the light-transmissive cover.
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Patent Agency Ranking
公开(公告)号：US20210218942A1
公开(公告)日：2021-07-15
申请号：US17216986
申请日：2021-03-30
Inventor： Kazuhiro MINAMI
IPC: H04N9/31
Abstract: A projection system includes an invisible light projector, an imaging unit, an image generator, and a visible light projector. The invisible light projector projects a predetermined invisible light image onto the object via invisible light. The imaging unit captures an image of the invisible light projected from the invisible light projector. The image generator measures a shape of the object based on the image captured by the imaging unit to generate image data showing image content for projection onto the object in accordance with the measured shape. The visible light projector projects the image content shown by the image data onto the object via visible light. The invisible light projector emits pulsed invisible light to project the measurement pattern. The image generator generates the image data based on an image captured in accordance with a timing for the pulsed light emission.
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公开(公告)号：US20200260058A1
公开(公告)日：2020-08-13
申请号：US16860178
申请日：2020-04-28
Inventor： Kazuhiro MINAMI , Ryuji FUCHIKAMI
Abstract: A projection system includes an invisible light projector, a background member, an imaging unit, an image generator, and a visible light projector. The invisible light projector projects a predetermined invisible light image onto the object via invisible light. The background member is disposed behind the object in a direction of the invisible light emitted from the invisible light projector. The imaging unit captures an image of the invisible light projected from the invisible light projector. The image generator measures a shape of the object based on the image captured by the imaging unit to generate image data showing image content for projection onto the object in accordance with the measured shape. The visible light projector projects the image content shown by the image data onto the object via visible light. The background member has a light shielding surface that does not diffusely reflect the invisible light incident thereon.
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公开(公告)号：US20240160015A1
公开(公告)日：2024-05-16
申请号：US18422745
申请日：2024-01-25
Inventor： Kazuhiro MINAMI , Hiroyuki SHOBAYASHI , Satoshi KUZUHARA
CPC classification number: G02B27/0103 , G02B6/34 , G02B2027/0125
Abstract: A light flux incident on the light guide body is replicated in a first direction or a second direction by a diffraction structure of an expansion region. When a normal direction with respect to the light guide body of the expansion region is defined as a Z-axis direction, and a tangential plane is defined as an XY plane, the diffraction structure of the expansion region is configured such that a light flux duplicated when the light flux incident on the expansion region is transmitted through the XY plane of the expansion region from a positive direction of the Z axis and a light flux duplicated when the light flux is transmitted through the XY plane of the expansion region from a negative direction of the Z axis are accommodated within a viewing angle at which the image is visually recognizable.
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公开(公告)号：US20190356888A1
公开(公告)日：2019-11-21
申请号：US16531236
申请日：2019-08-05
Inventor： Kazuhiro MINAMI
Abstract: A projector includes a first projection unit that projects a first image, a first imager that captures a second image projected by another projector, and a first calculation unit. The first calculation unit calculates, from captured image data of the second image captured by the first imager and interval information indicating an interval between the other projector and the projector, a first distance between a surface on which the second image is projected and the other projector, or a second distance between an area in which the second image is projected and the projector. The first projection unit controls projection of the first image based on the first distance or the second distance.
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公开(公告)号：US20180152681A1
公开(公告)日：2018-05-31
申请号：US15878912
申请日：2018-01-24
Inventor： Kazuhiro MINAMI , Ryuji FUCHIKAMI
IPC: H04N9/31
CPC classification number: H04N9/3155 , H04N9/3161 , H04N9/3164 , H04N9/3185 , H04N9/3194
Abstract: A projection system includes an invisible light projector, a background member, an imaging unit, an image generator, and a visible light projector. The invisible light projector projects a predetermined invisible light image onto the object via invisible light. The background member is disposed behind the object in a direction of the invisible light emitted from the invisible light projector. The imaging unit captures an image of the invisible light projected from the invisible light projector. The image generator measures a shape of the object based on the image captured by the imaging unit to generate image data showing image content for projection onto the object in accordance with the measured shape. The visible light projector projects the image content shown by the image data onto the object via visible light. The background member has a light shielding surface that does not diffusely reflect the invisible light incident thereon.
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