-
公开(公告)号：US20200186759A1
公开(公告)日：2020-06-11
申请号：US16615533
申请日：2017-05-25
申请人： SHIMADZU CORPORATION
发明人： Masato TANAKA
摘要： The purpose of the present invention is to provide a head mounted display for aircraft in which astigmatism is reduced so that a display image with a wide visual field can be observed. A reflection surface (10a) of a visor (10), onto which display light is projected from a projection optical system (12), does not have a spherical shape but an aspherical shape whose curvature in the vertical direction is smaller than in the horizontal direction. This difference in curvature eliminates the difference in optical power due to a difference in the incident angle on the reflection surface (10a) and reduces the amount of astigmatism. An intermediate image is formed in both the vertical and horizontal directions within the projection optical system (12) or in the middle of an optical path from the projection optical system (12) to the reflection surface (10a). This increases the degree of freedom of the arrangement of optical elements and allows for the reduction in size and weight of the device.
-
公开(公告)号：US20180307014A1
公开(公告)日：2018-10-25
申请号：US15767000
申请日：2016-01-18
申请人： SHIMADZU CORPORATION
发明人： Masato TANAKA
CPC分类号： G02B17/08 , G02B6/0055 , G02B27/02 , G02B2027/0178 , G02C7/00 , H04N5/64
摘要： In order to provide an optical element in which the occurrence of a region where no light beams are present (omission) is prevented, an optical element is provided with a main substrate which is manufactured from a light-transmitting material and in which a front surface and a rear surface are parallel to the setting directions, wherein at least one main beam splitter surface is provided obliquely to the setting directions and formed inside the primary substrate. The optical element is also provided with a sub substrate which is manufactured from a light transmitting material and in which a front surface and a rear surface are parallel to the setting directions, wherein a sub beam splitter surface is arranged at least between the front surface or the rear surface of the single sub substrate, and the rear surface or the front surface of the main substrate.
-
公开(公告)号：US20230152505A1
公开(公告)日：2023-05-18
申请号：US17797679
申请日：2020-02-07
申请人： SHIMADZU CORPORATION
发明人： Masato TANAKA
IPC分类号： F21V8/00
CPC分类号： G02B6/0038 , G02B6/0028 , G02B6/0031 , G02B6/0076
摘要： A display device includes an image display element, a collimator, a first light guide formed of a flat plate transparent to light, a second light guide formed of a plate member transparent to the light and having one surface that is a flat surface in contact with one of surfaces of the first light guide and the other surface that is a sawtooth surface, and a beam splitter formed on an interface between the first and second light guides to transmit a part of the light and reflect the remainder thereof. The sawtooth surface is configured by alternately combining a first surface non-parallel to a propagating direction of the light propagating through the second light guide after passing through the interface and configured to transmit the light and a second surface substantially parallel to the propagating direction.
-
公开(公告)号：US20210278664A1
公开(公告)日：2021-09-09
申请号：US17059383
申请日：2018-06-11
申请人： Shimadzu Corporation
发明人： Masato TANAKA
IPC分类号： G02B27/01
摘要： Image light that travels between opposed parallel surfaces (100a, 100b) of the light guide (10) while being reflected by the opposed parallel surfaces is partially reflected by the outgoing-side reflection surfaces (102a, 102b) of a beam splitter. The image light took out from the light guide (10) is partially reflected by the two combiners (14, 15) and advances towards eyes of a user (E). The distance D of the combiners (14, 15) is set to be equal to or larger than A1/(2 cos θ·tan θ) and equal to or smaller than A2/(2 cos θ·tan θ), where θ is an incident angle θ of the image light to the combiner (14, 15), A1 is a light flux width of the image light reflected by one outgoing-side reflection surface, and A2 is a light flux width of the image light emitted from all of the outgoing-side reflection surfaces. This makes it possible to reduce the overlapping of images formed when viewed from the user, avoid the generation of partial image omission, and improve visibility.
-
公开(公告)号：US20210271084A1
公开(公告)日：2021-09-02
申请号：US17256074
申请日：2018-07-10
申请人： Shimadzu Corporation
发明人： Masato TANAKA
摘要： In an image display device in which two light guides are combined, flat plates (16, 17) of the same material as that of a substrate (11) of a first light guide (10) is affixed to the outsides of a first surface (11a) and a second surface (11b) of the substrate (11), the first surface (11a) and the second surface (11b) opposing each other. Image light introduced into the substrate (11) is reflected by an incident-side reflective surface (12) toward exit-side reflective surface (13a to 13f), which are half mirrors, and a part of the image light is reflected in stages by the respective exit-side reflective surfaces (13a and 13f) and the remainder of the image light is transmitted. The image light reflected by the exit-side reflective surfaces (13a to 13f) is emitted through the second flat plate (17) and introduced into a second light guide. The part of the image light reflected by the incident-side reflective surface (12) reaches the interface between the first surface (11a) and the first flat plate (16), but enters the flat plate (16) without being reflected, and hits and is absorbed by a light-absorbing sheet (18). This reduces the occurrence of stray light and improves the visibility of a virtual image displayed before user's eyes.
-
公开(公告)号：US20210239975A1
公开(公告)日：2021-08-05
申请号：US17059387
申请日：2018-06-11
申请人： Shimadzu Corporation
发明人： Ryo TATENO , Masato TANAKA
摘要： Image light emitted from an image emitting unit including a light source (1) or the like is introduced into a light guide (10), reflected by an incident-side reflection surface (12), and guided to an inside of a substrate (11). The image light propagates while being reflected by a first surface (11a) and a second surface (11b) of the substrate (11), and is emitted from the substrate (11) by being partially reflected by the outgoing-side reflection surfaces (13a to 13e) as half mirrors. A transparent plastic protective plate (15) is disposed with a distance “d” of 1 mm
-
公开(公告)号：US20200341278A1
公开(公告)日：2020-10-29
申请号：US16758893
申请日：2018-09-12
申请人： SHIMADZU CORPORATION
发明人： Masato TANAKA
摘要： In an aircraft HMD, a visor has toroidally-shaped portions respectively corresponding to left and right eyes of a user, and the toroidally-shaped portions are connected at a substantially central part between the user's eyes. The toroidally-shaped portions are aspherical shapes having a smaller curvature in a vertical direction than in a horizontal direction. Two sets of an image display section and a projection optical system are provided independently corresponding to the left and right toroidally-shaped portions. Due to the difference in curvature, a difference in optical power caused, for example, by a difference in incident angle on the reflecting surface is eliminated. This lessens astigmatism and allows display of an image with a wider visual field. An intermediate image is formed in both the vertical and horizontal directions within the projection optical system or in the middle of an optical path from the projection optical system to the reflecting surface.
-
公开(公告)号：US20230079528A1
公开(公告)日：2023-03-16
申请号：US17898078
申请日：2022-08-29
申请人： Shimadzu Corporation
发明人： Masato TANAKA
摘要： A target object detection device capable of providing an image useful for discovering a target object from an aerial image is provided. A target object detection device for detecting at least one target object from an aerial image is provided with an imaging device, a computer, and a display device. The computer is configured to divide the first aerial image into a plurality of first images, output a confidence score that the target object is included, for each of the plurality of first images, and cause the display device to display a first discrimination image capable of discriminating a degree of the confidence score and a portion of the first aerial image corresponding to the confidence score.
-
9.发明申请公开(公告)号：US20220202388A1
公开(公告)日：2022-06-30
申请号：US17523978
申请日：2021-11-11
申请人： SHIMADZU CORPORATION
发明人： Masato TANAKA , Masahiro HIBI , Hiroyuki KINOSHITA
摘要： An X-ray imaging apparatus is provided with an X-ray irradiation unit, an X-ray detection unit, a moving mechanism unit movable in a state of supporting the X-ray irradiation unit, an optical feature point acquisition unit, and a notification unit. The optical feature point acquisition unit is provided on either one of the X-ray irradiation unit and the X-ray detection unit and is configured to optically detect a feature point provided on the other of the X-ray irradiation unit and the X-ray detection unit to acquire the position of the feature point. The positional deviation acquisition unit acquires the positional deviation of the relative position between the X-ray irradiation unit and the X-ray detection unit based on the position of the feature point. The notification unit performs a notification based on the positional deviation.
-
公开(公告)号：US20210033774A1
公开(公告)日：2021-02-04
申请号：US16964502
申请日：2018-01-31
申请人： Shimadzu Corporation
发明人： Masato TANAKA
摘要： Image light is introduced into a light guide through a collimating optical system, reflected by an incident side reflective surface (101) in a substrate (100), and repeatedly reflected between a first surface and a second surface (100a, 100b). The image light reaches a plurality of emission side reflective surfaces (102a to 102c) that constitute a beam splitter. The incident side reflective surface (101) and the emission side reflective surfaces (102a to 102c) are arranged in parallel. Therefore, with respect to the image light (L1, L2) derived from the image light emitted from the same position on a display surface of a display unit and incident on the substrate 100 at the same incident angle θ1, the emission angle θ2 of the image light (L1′, L2′) emitted from the substrate (100) becomes equal in both cases when the light is reflected one time by the incident side reflective surface (101) and one time by the emission side reflective surface (102a) and when the light is reflected two times by the incident side reflective surface (101) and two times by the emission side reflective surface (102a). As a result, it is possible to reduce the generation of a ghost image, which in turn can improve the visibility of a virtual image.
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.014 秒)
