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公开(公告)号：US20230085385A1
公开(公告)日：2023-03-16
申请号：US17988968
申请日：2022-11-17
Inventor： Satoshi KUZUHARA , Tsuneo UCHIDA
Abstract: An optical device includes a lens element, a first scanning element, and a controller. The lens element directs first light emitted from the first light-emitting element and second light emitted from the second light-emitting element, to a predetermined position. The first scanning element is arranged at the predetermined position, on which first light and second light exiting the lens element are incident at mutually different angles. The controller provides light emission control to start light emission at light emission timings shifted. The first light-emitting element and the second light-emitting element is arrayed such that an optical axis of first light and an optical axis of second light are contained in a same plane. The controller controlees the light emission timings of the first light-emitting element and the second light-emitting element in response to rotation actions of the first scanning element.
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公开(公告)号：US20210364784A1
公开(公告)日：2021-11-25
申请号：US17398135
申请日：2021-08-10
Inventor： Satoshi KUZUHARA , Tsuneo UCHIDA
Abstract: The present disclosure provides an optical system that includes a prism having an incident surface, an exit surface, and one or more reflecting surfaces. The optical system includes a first scanning element configured to scan a light that enters and has a plurality of wavelengths in a first direction, and reflect the light in a direction of the incident surface of the prism. The optical system includes a second scanning element configured to scan in a second direction the light that exits from the exit surface of the prism, the second direction being orthogonal to the first direction. The incident surface of the prism has a concave shape with respect to the first scanning element.
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公开(公告)号：US20200379252A1
公开(公告)日：2020-12-03
申请号：US16998378
申请日：2020-08-20
Inventor： Satoshi KUZUHARA , Hiroaki OKAYAMA
Abstract: A head-up display of the present disclosure projects a display image on a transparent reflecting member. The head-up display includes: a display device that displays the display image; and a projection optical system that projects the display image displayed on the display device. On an assumption that light reaching a center of a viewpoint region of the observer and corresponding to a center of the virtual image is reference light, the projection optical system includes a prism element that has an incident surface, a reflection surface, and an emitting surface different from the incident surface sequentially in an optical path from the display device. The emitting surface is inclined to the reference light. An inclination amount θ2 of the reference light emitted from the emitting surface with respect to the emitting surface lies in a range of 15°
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14.发明申请公开(公告)号：US20190302583A1
公开(公告)日：2019-10-03
申请号：US16363628
申请日：2019-03-25
Inventor： Koji TANIGUCHI , Hiroaki OKAYAMA , Satoshi KUZUHARA , Yusuke NIHEI
IPC: G03B21/14 , G03B21/28 , G02F1/1335 , G06F9/30 , H04N9/77
Abstract: A display system includes an image producing unit, a projection unit and an adjustment unit. The image producing unit has a display surface, and is configured to produce an image on the display surface. The projection unit is configured to project a virtual image to a target space with an output light of the image producing unit. The virtual image corresponds to the image produced by the image producing unit. The display system is configured to change a visual distance between an eye-box and the virtual image. The adjustment unit is configured to adjust brightness of the virtual image according to the visual distance.
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公开(公告)号：US20170248786A1
公开(公告)日：2017-08-31
申请号：US15597804
申请日：2017-05-17
Inventor： Satoshi KUZUHARA , Hiroaki OKAYAMA
CPC classification number: G02B27/0101 , B60K35/00 , B60K2370/1529 , B60K2370/23 , B60K2370/334 , B60K2370/347 , B60K2370/39 , B60K2370/693 , G02B27/01 , G02B2027/011 , G02B2027/0118 , G02B2027/013 , G06T19/006
Abstract: A light beam that is emitted from a center of display surface and reaches a center of a viewing area is referred to as reference light beam. An intersection of reference light beam with reflective surface of first reflective element is referred to as reference intersection point. A plane including reference light beam incident on first reflective element and reference light beam reflected by first reflective element is referred to as a reference plane. An intersection line of reflective surface of first reflective element with the reference plane is referred to as reference intersection line. A tangent plane of reflective surface of first reflective element at reference intersection point is referred to as reference tangent plane. Respective heights from two points, vertically upper point and vertically lower point, which are equidistant from reference intersection point on reference tangent plane, to reflective surface of first reflective element are referred to as a sag. When perpendiculars intersect with reference intersection line, a sag at point is greater than a sag at point.
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Patent Agency Ranking
公开(公告)号：US20240160016A1
公开(公告)日：2024-05-16
申请号：US18423722
申请日：2024-01-26
Inventor： Kazuhiro Minami , Satoshi KUZUHARA , Hiroyuki SHOBAYASHI
CPC classification number: G02B27/0103 , G02B6/34 , G02B2027/0125
Abstract: An optical system includes a display that emits a light flux visually recognized by an observer as an image, and a light guide body that replicates the light flux. The light flux is emitted from the emission surface after being expanded by being replicated in a first direction corresponding to a horizontal direction of the image visually recognized by the observer due to diffraction by a diffraction structure of an expansion region in the light guide body, a second direction corresponding to a vertical direction of the image, or both the directions. A coherence length of the light flux diffracted and emitted in the expansion region in the light guide body is smaller than twice a shorter interval between the diffraction structure and each of a front surface and a back surface of the light guide body.
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公开(公告)号：US20230288685A1
公开(公告)日：2023-09-14
申请号：US18198358
申请日：2023-05-17
Inventor： Tsuneo UCHIDA , Takuya IMAOKA , Katsu YAMADA , Satoshi KUZUHARA
CPC classification number: G02B17/086 , G02B13/18 , G02B13/16 , G03B21/28 , H04N23/55
Abstract: The optical system includes a first sub-optical system including an aperture stop and a second sub-optical system including a prism. The prism has a first transmission surface located on a reduction side, a second transmission surface located on a magnification side, and at least one reflection surface between the first transmission surface and the second transmission surface. The first sub-optical system includes a plurality of rotationally symmetric lens elements. When the axis passing through at least two centers of the rotationally symmetric lens element is defined as a reference optical axis, at least one optical surface of the prism is formed such that in a plane perpendicular to the reference optical axis, a maximum angle θmax and a minimum angle θmin in terms of an angle at which a principal ray of light rays having an image-forming relationship on a concentric circle centered on an intersection of the reference optical axis and a reduction conjugate point of the rectangular region intersects a normal line of the plane at a position where the principal ray is made incident on the optical surface satisfy the following Expression (1): 45°>|θmax|−|θmin|>0.014°.
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公开(公告)号：US20220082805A1
公开(公告)日：2022-03-17
申请号：US17511799
申请日：2021-10-27
Inventor： Tsuneo UCHIDA , Katsu YAMADA , Satoshi KUZUHARA
Abstract: An optical system according to the present disclosure includes a first sub-optical system including an aperture stop and a second sub-optical system including a prism. The prism has a first transmission surface located on the reduction side, a second transmission surface located on the magnification side, and at least one reflection surface located on the optical path between the first transmission surface and the second transmission surface. A first reflection surface closest to the intermediate imaging position has a shape with a concave surface facing a direction into which a light ray incident on first the reflection surface is reflected. A curvature shape of the first reflection surface is set such that some of multiple principal rays passing through the reduction conjugate point intersect on the optical path between the first reflection surface and the second transmission surface.
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公开(公告)号：US20210373305A1
公开(公告)日：2021-12-02
申请号：US17404468
申请日：2021-08-17
Inventor： Satoshi KUZUHARA , Tsuneo UCHIDA
Abstract: The present disclosure provides an optical system that includes a prism having an incident surface, an exit surface, and one or more reflecting surfaces. A first intermediate imaging position of a light flux in a first direction is located inside the prism. The first intermediate imaging position is different from a second intermediate imaging position of the light flux in a second direction orthogonal to the first direction.
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公开(公告)号：US20210103151A1
公开(公告)日：2021-04-08
申请号：US17126507
申请日：2020-12-18
Inventor： Hiroaki OKAYAMA , Satoshi KUZUHARA , Yusuke NIHEI , Koji TANIGUCHI , Makoto FUNABIKI
IPC: G02B27/01
Abstract: The head-up display includes an imaging position changer configured to change a position of a virtual image between a far visual position far from an observer and a near visual position close to the observer. The imaging position changer inclines the virtual image at the far visual position by a second inclination angle with respect to a perpendicular plane to a reference light beam reaching a center of a viewpoint region in which a viewpoint of the observer is located, to move an upper end thereof in a forward direction of the moving object, and inclines the virtual image at the near visual position by a first inclination angle smaller than the second inclination angle with respect to the perpendicular plane to the reference light beam, to move the upper end in the forward direction of the moving object.
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