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公开(公告)号：US12118136B2
公开(公告)日：2024-10-15
申请号：US18265266
申请日：2021-12-20
Applicant: Maxell, Ltd.
Inventor： Hiroaki Takahashi , Koji Hirata , Koji Fujita , Toshinori Sugiyama
IPC: G06F3/01 , G02F1/13357 , G06F3/0346 , H04N13/346 , H04R1/40
CPC classification number: G06F3/011 , G02F1/133603 , G06F3/0346 , H04N13/346 , H04R1/403
Abstract: A technique suitable when an air floating video is used as a non-contact user interface is provided. An air floating video display apparatus includes: a sensor for detecting a state of operation including a position of a hand finger of a user with respect to an air region including a plane of the air floating video or an object displayed on the plane; and a fingertip tactile sense generator which generates texture of a sense of touch on the hand finger by forming, based on information detected by the sensor, sound pressure based on an ultrasonic wave in vicinity of a position of the hand finger.
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公开(公告)号：US11921287B2
公开(公告)日：2024-03-05
申请号：US16622370
申请日：2018-05-25
Applicant: MAXELL, LTD.
Inventor： Tomoki Yamamoto , Toshinori Sugiyama , Koji Hirata , Masahiko Yatsu
CPC classification number: G02B27/0101 , B60K35/00 , G02B5/0833 , G02B5/282 , G02B27/286 , B60K2370/1529 , B60K2370/18 , B60K2370/23 , B60K2370/25 , B60K2370/27 , B60K2370/31 , G02B2027/014 , G02B2027/0196
Abstract: The information display apparatus has a housing with an opening and a transparent cover formed on the opening, the housing includes image-light generating means configured to generate image light that displays the image information and an optical system configured to allow a driver of the vehicle to recognize image information based on the image light from the image-light generating means as a virtual image in front of the windshield. When S-polarized light on the windshield is assumed to be a first polarized wave while polarized light that orthogonally crosses the S-polarized light in a polarizing direction is assumed to be a second polarized wave, the image-light generating means is configured to generate the image light made of the first polarized wave, and a transmittance/reflectance control means blocks a part of the first polarized wave and the second polarized wave of incident external light entering the housing from the opening.
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公开(公告)号：US11846776B2
公开(公告)日：2023-12-19
申请号：US17870308
申请日：2022-07-21
Applicant: MAXELL, LTD.
Inventor： Akio Misawa , Nozomu Shimoda , Kazuomi Kaneko , Koji Hirata , Toshinori Sugiyama
CPC classification number: G02B27/0149 , B60K35/00 , G02B27/0101 , H05K7/2039 , H05K7/20336 , B60K2370/155 , B60K2370/1529 , B60K2370/334 , B60K2370/691 , G02B2027/015 , G02B2027/0154
Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.
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公开(公告)号：US11686937B2
公开(公告)日：2023-06-27
申请号：US17506039
申请日：2021-10-20
Applicant: MAXELL, LTD. , HITACHI INDUSTRY & CONTROL SOLUTIONS, LTD.
Inventor： Masahiko Yatsu , Koji Hirata , Shigeki Hoshino
IPC: G02B27/01 , G02F1/1335
CPC classification number: G02B27/0101 , G02F1/133526 , G02B2027/014 , G02B2027/0123 , G02B2027/0138
Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.
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公开(公告)号：US11487115B2
公开(公告)日：2022-11-01
申请号：US16309471
申请日：2017-04-24
Applicant: MAXELL, LTD.
Inventor： Akio Misawa , Nozomu Shimoda , Kazuomi Kaneko , Koji Hirata , Toshinori Sugiyama
Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.
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Patent Agency Ranking
公开(公告)号：US11422367B2
公开(公告)日：2022-08-23
申请号：US16622362
申请日：2017-06-16
Applicant: MAXELL, LTD.
Inventor： Toshinori Sugiyama , Koji Hirata , Masahiko Yatsu , Yasuhiko Kunii , Kazuomi Kaneko
Abstract: The light source apparatus has: a light source unit including a plurality of semiconductor light source elements; a collimator including a plurality of collimator elements, each of the plural collimator elements being disposed on a light emission axis of each of the plural semiconductor light source elements; a polarization conversion element disposed on an emission side of the collimator; and a light guide disposed on an emission side of the polarization conversion element, the plural semiconductor light source elements and the plural collimator elements are arranged in a first direction orthogonal to the light emission axis, and the polarization conversion element extends in the first direction, and includes a polarizing beam splitter and a phase plate, which are arranged at symmetrical positions with respect to a plane formed by the first direction and a second direction corresponding to the light emission axis.
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公开(公告)号：US11327303B2
公开(公告)日：2022-05-10
申请号：US16328985
申请日：2017-06-23
Applicant: MAXELL, LTD. , Hitachi Industry & Control Solutions, Ltd.
Inventor： Koji Hirata , Masahiko Yatsu , Toshinori Sugiyama , Kazuomi Kaneko
Abstract: The information display apparatus configured to display video information of a virtual image on a reflecting surface of conveyance includes: a display configured to display the video information; and a virtual image optical system configured to display a virtual image at a front of the conveyance by reflecting light emitted from the display by means of the reflecting surface. The virtual image optical system includes a concave mirror and an optical element. The optical element is arranged between the display and the concave mirror, and is configured to correct distortion of the virtual image obtained so as to correspond to a viewpoint position of a driver on a basis of a shape of the concave mirror and a shape of the optical element. The information display apparatus further includes a virtual image double image conversion reducer configured to reduce double image conversion of the virtual image.
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公开(公告)号：US11221480B2
公开(公告)日：2022-01-11
申请号：US16094173
申请日：2016-04-26
Applicant: MAXELL, LTD. , Hitachi Industry & Control Solutions, Ltd.
Inventor： Koji Hirata , Masahiko Yatsu , Toshinori Sugiyama , Kazuomi Kaneko , Shigeki Hoshino
Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.
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公开(公告)号：US11148584B2
公开(公告)日：2021-10-19
申请号：US16122597
申请日：2018-09-05
Applicant: MAXELL, LTD.
Inventor： Koji Hirata , Masahiko Yatsu , Hiroyuki Kajikawa , Hiroyuki Nakamura
IPC: B60Q1/26 , F21S41/00 , B60Q1/24 , F21S41/32 , F21S43/237 , F21S43/245 , F21S43/247 , B60Q1/38 , F21S41/24 , F21S41/13 , F21S41/20 , G03B21/14 , F21Y113/13 , F21Y105/10 , F21Y115/10 , B60Q1/04 , F21S41/148 , F21S41/153 , F21S41/125
Abstract: A vehicular lighting apparatus which is relatively small, low cost, superior in mountability to an automobile, and superior in recognizeability of an object illuminated by a head lamp. The apparatus includes: a composite lens element that is a light guide element constructed by molding a translucent resin substantially into a plate-like shape; a planar light-emitting unit that emits light; an optical system that transforms planar light from the light-emitting unit into linear light and that causes the linear transformed light to be incident on a rear side face of the light guide element; and a diffraction lens formed on the rear side face of the light guide element on which the linear transformed light is incident, and condensing the linear transformed light. The light condensed by the lens means is emitted from a front side face of the light guide element onto a road surface in front of the vehicle.
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公开(公告)号：US10725216B2
公开(公告)日：2020-07-28
申请号：US15562522
申请日：2015-04-08
Applicant: MAXELL, LTD.
Inventor： Koji Hirata
IPC: G02B5/26 , H04N5/238 , B60R11/04 , G03B11/00 , G03B15/00 , H04N5/225 , H04N9/04 , H04N5/33 , G02B5/30 , B60R11/00 , G02B27/28 , G03B11/04
Abstract: The onboard camera is mounted in a vehicle to shoot a driving environment of the vehicle by receiving external light from outside of the vehicle, the onboard camera includes: a camera unit having a lens unit which generates an image by receiving the external light and an image-capturing device which generates an image signal based on the image generated by the lens unit; and a polarization plate arranged in front of the camera unit, the image-capturing device constituting the camera unit is a CMOS image sensor, and the polarization plate is a polarization plate whose cross transmittance with respect to S-polarized wave having a wavelength from 420 nm to 700 nm is 5 to 20% or a polarization plate whose parallel transmittance with respect to natural light having a wavelength from 420 nm to 700 nm is 45 to 60%.
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