Patents Assigned to Nippon Seiki Co., Ltd.
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Patent number: 11428932Abstract: There is provided a lens array and an lens array capable of suitably preventing irregular brightness without reducing resolution. A micro lens array of a screen includes upper-level microlenses and lower-level microlenses which are formed on the incidence surface of the screen, which have the same effective diameter, and which have a structure that generates an optical path length difference ? in transmission light. By disposing the upper-level microlenses and the lower-level microlenses at an interval based on the effective diameter, the basic periodic structure of a lens period is formed. Further, the upper-level microlenses and the lower-level microlenses form a basic block comprising a combination of the lenses having a structure that generates the optical path length difference. A concave-and-convex period PC based on the basic block is an integer multiple of the lens period.Type: GrantFiled: March 17, 2020Date of Patent: August 30, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Katsuhiro Koike, Takayuki Nomoto
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Patent number: 11370304Abstract: Provided is a head-up display device which can stably display a virtual image viewed so as to be stuck to a road surface, during traveling of a vehicle. A head-up display device according to the present invention is provided with a display means for projecting display light to a front window shield provided to a vehicle, and generating and displaying a virtual image, formed by the display light reflected at the front window shield, so as to be superposed on an actual scene seen through the front window shield. At least a part of a virtual image display region in which the virtual image is displayed is positioned below a road surface on which the vehicle travels.Type: GrantFiled: July 5, 2019Date of Patent: June 28, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Yuki Masuya, Makoto Hada, Shunsuke Saji
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Patent number: 11256089Abstract: There is provided a lens array and an lens array capable of suitably preventing irregular brightness without reducing resolution. A micro lens array of a screen includes upper-level microlenses and lower-level microlenses which are formed on the incidence surface of the screen, which have the same effective diameter, and which have a structure that generates an optical path length difference ? in transmission light. By disposing the upper-level microlenses and the lower-level microlenses at an interval based on the effective diameter, the basic periodic structure of a lens period is formed. Further, the upper-level microlenses and the lower-level microlenses form a basic block comprising a combination of the lenses having a structure that generates the optical path length difference. A concave-and-convex period PC based on the basic block is an integer multiple of the lens period.Type: GrantFiled: March 17, 2020Date of Patent: February 22, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Katsuhiro Koike, Takayuki Nomoto
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Patent number: 11226484Abstract: Provided is a head-up display device wherein in a state where a light-receiving unit is connected to a control substrate, a lid can be easily mounted to a case. Housed in a case of a head-up display device are a substrate for controlling a projector and a reflection unit for reflecting light projected thereon by the projector. The reflection unit is configured to have a reflecting mirror that is held by a holder, while the substrate is connected, via a connection member, with a light-receiving unit for detecting light from outside. The light-receiving unit is configured to have a light-receiving sensor that is held by a sensor holding part. The sensor holding part for holding the light-receiving sensor is held by the holder.Type: GrantFiled: October 13, 2017Date of Patent: January 18, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Satoshi Tsuchiya, Toshiaki Takahashi, Jun Suzuki
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Patent number: 11226488Abstract: Provided is a head-up display having excellent handling properties. This head-up display is provided with a display panel, a substrate including a light source which illuminates the display panel from a rear surface thereof, a heat sink which dissipates heat transferred from the substrate, and a case which accommodates the heat sink. The case includes an opening exposing at least a portion of the heat sink, and a protecting wall which has a larger amount of protrusion than the amount of protrusion of the heat sink protruding from the opening, and which protects the heat sink protruding from the opening.Type: GrantFiled: March 19, 2019Date of Patent: January 18, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Wataru Saito, Bunkichi Kaneko, Masao Satoh, Tatsuya Hasegawa, Toshiro Tsurumaru, Yoshiyuki Iida
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Patent number: 11215819Abstract: The present invention is capable of making it difficult to perceive the narrowness of a display area of a virtual image. Provided is a head-up display which projects display light on a transmission/reflection part to display a first virtual image in an area in which the virtual image can be displayed, said area being superimposed on an actual view outside of a vehicle, wherein, when deviation occurs in the relative positions of the actual view and the transmission/reflection part from the perspective of a viewer, a control unit enlarges a virtual image display area, which sets the range in which the first virtual image is displayed within the area in which the virtual image can be displayed, so as to be larger than normal.Type: GrantFiled: November 6, 2017Date of Patent: January 4, 2022Assignee: NIPPON SEIKI CO., LTD.Inventors: Makoto Hada, Yuki Masuya
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Patent number: 11187910Abstract: The purpose of the present invention is to enable information presented by an additionally displayed virtual image to be displayed in an easily recognizable manner. A projection unit projects, towards a projection-receiving part, display light capable of displaying virtual images in positions having different display distances from a viewer. A display distance determination unit is capable of adjusting, in a depth direction, the display distances of the virtual images displayed by the projection unit. If a display addition determination unit determines that a virtual image is to be additionally displayed, the display distance of an existing virtual image already displayed and the display distance of a virtual image to be additionally displayed are made to be different.Type: GrantFiled: May 15, 2018Date of Patent: November 30, 2021Assignee: NIPPON SEIKI CO., LTD.Inventor: Yuki Masuya
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Patent number: 11175659Abstract: The present invention contributes to safe driving by facilitating recognition of the timing at which driving assistance is switched. In the present invention, an advance notice display unit obtains information relating to vehicle driving assistance to be disabled and displays a advance notice image for giving advance notice of disabling of the driving assistance on the basis of said information, and a completion display unit obtains information relating to the detection of a disabling operation required for disabling the driving assistance and/or the completion of disabling of the driving assistance and displays a completion image for giving notice of the completion of disabling of the driving assistance or the completion of the disabling operation on the basis of said information.Type: GrantFiled: March 9, 2017Date of Patent: November 16, 2021Assignee: NIPPON SEIKI CO., LTD.Inventor: Tamito Kawate
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Patent number: 11175502Abstract: Provided is a head-up display with enhanced manufacturability when attaching a translucent sheet. This head-up display is provided with: a display device for outputting display light; a translucent sheet that is translucent and comprises a sheet having a sheet peripheral edge; a case that accommodates the display device and has an opening that is covered by the translucent sheet and through which the display light is emitted outside through the translucent sheet, and a sheet holding part that is at an opening peripheral edge and holds the sheet peripheral edge; and a fixing frame that covers the sheet peripheral edge and fixes the translucent sheet to the sheet holding part.Type: GrantFiled: July 2, 2019Date of Patent: November 16, 2021Assignee: NIPPON SEIKI CO., LTD.Inventor: Masahiko Mizuochi
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Patent number: 11170722Abstract: Provided is a display device with which a suitable image can be displayed with a simple device configuration. The display device has: a display panel which displays an image on the basis of a plurality of image patterns; a plurality of light sources which illuminate, from the back surface, respective regions of the display panel that has been divided into a plurality of regions; a storage unit which stores luminance information in which the respective image patterns and the luminance of the respective light sources in the image pattern are associated with each other; and a luminance control unit which controls the luminance of each of the light sources on the basis of the luminance information. The luminance control unit gradually changes the luminance of the light sources from the luminance of the light source before a change to the luminance of the light source after the change.Type: GrantFiled: March 8, 2019Date of Patent: November 9, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Yu Nawata, Yasuyuki Fujitsuka
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Patent number: 11170537Abstract: A vehicle display device includes a display unit displaying a display image, an image generating unit generating the display image, and a target object information acquiring unit acquiring target object information relating to a target object present at the periphery of a vehicle and outputting the same to the image generating unit. If the distance from the vehicle to the target object exceeds a first reference value, the image generating unit generates an information image of the target object in a sharply visible region, and if the distance from the vehicle to the target object does not exceed the first reference value, the image generating unit generates the information image of the target object in a blurred region, and in that the information image in the blurred region is generated to be less sharply visible than the information image in the sharply visible region.Type: GrantFiled: July 30, 2018Date of Patent: November 9, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Yuki Masuya, Takashi Mikami
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Patent number: 11099383Abstract: The present invention provides a head-up display device wherein a light shielding part for preventing a washout phenomenon is prevented from shining. A head-up display according to the present invention, in which a display unit for emitting display light (L) is housed in a case and the upper portion of the display unit is covered by the light shielding part, has strip-shaped protrusion parts formed on the bottom surface of the light shielding part (42). With this constitution, the strip-shaped protrusion parts prevent the scattered light (SL) resulting from the light (L) output from the display unit from illuminating the bottom surface of the anti-washout light shielding part, thereby preventing the bottom surface from being displayed as a virtual image.Type: GrantFiled: January 16, 2017Date of Patent: August 24, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Hiroyuki Furusawa, Shota Koike
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Patent number: 11097666Abstract: An instrument is provided with: a body; a speaker having a plurality of flanges that bulge outward from the body; a case that has a recess for housing the speaker. The recess has a side wall, an installation surface on which the speaker is installed, and a plurality of fixing parts that fix the flanges in an orthogonal direction orthogonal to the installation surface and that bulge inward from the side wall. The speaker can rotate about the rotational axis in the orthogonal direction up to a fixing position where the flanges and the fixing parts overlap each other in the orthogonal direction after the speaker has been disposed in an unfixing position where the flanges and the fixing parts do not overlap each other in the orthogonal direction.Type: GrantFiled: July 26, 2018Date of Patent: August 24, 2021Assignee: NIPPON SEIKI CO., LTD.Inventor: Yui Yaegashi
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Patent number: 11061229Abstract: Provided is a head-up display in which the characteristics for dissipating heat generated by a light source are excellent. This head-up display emits display light of a display image projected by a display device to a transmission/reflection part of the vehicle to allow a viewer to see a virtual image of the display image. The display device comprises: a substrate that has a quadrilateral heat dissipation plate having corners; and a quadrilateral light source that is provided on the heat dissipation plate, and that has corners. The heat dissipation plate is disposed such that the corners of the heat dissipation plate 61 are rotated relative to the corners of the light source.Type: GrantFiled: September 25, 2018Date of Patent: July 13, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Yuichi Fukushima, Yasuhiro Yamakawa, Kiyoshi Tsuchida
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Patent number: 10935448Abstract: A pressure detection device includes a base plate having first and second principal surfaces and a through-hole in which a fluid to be measured flows. A pressure sensor arranged above the first principal surface to cover the through-hole outputs an electric signal corresponding to the pressure of the fluid. A housing includes a recessed portion and first and second capacitor holders. The recessed portion retains the base plate and first and second lead terminals electrically connected to the pressure sensor and allows a part of each of the lead terminals to be exposed. The capacitor holders each includes an outwardly opened recess and together hold a capacitor electrically connected to the lead terminals. Each of the capacitor holders obliquely protrudes from an outer shape of the housing to both sides when viewed in a plan view in a direction from the first principal surface to the second principal surface.Type: GrantFiled: February 10, 2017Date of Patent: March 2, 2021Assignees: NIDEK TOSOK CORPORATION, NIPPON SEIKI CO., LTD.Inventors: Yoshiyuki Kobayashi, Shigehiro Kataoka, Yoshihiro Kamimura
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Patent number: 10936414Abstract: The purpose of the present invention is to provide a display device for a vehicle which is capable of avoiding NAND flash memory data loss. Provided is a display device for a vehicle, comprising: a display unit 6 which displays vehicle information; a NAND flash memory 1 which stores, together with an error correction code, data which is related to the display of the display unit 6; and a control unit (for example, a second control unit 2) which causes the display 6 to display the vehicle information using said data. When a load upon the vehicle is low, such as when a switch key for commencing the driving of the vehicle is off, the control unit (for example, a first control unit 3), as a data loss avoidance process, assesses, with the error correction code, whether an error is present in the data which is recorded in the NAND flash memory 1. If the error is present in the data, the control unit (for example, the first control unit 3) corrects the error with the error correction code.Type: GrantFiled: June 22, 2017Date of Patent: March 2, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Ryuji Saito, Shin Usuda
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Patent number: 10913355Abstract: Aspects of the subject technology relate to a head-up display that achieves a balance in visibility between a virtual image and foreground displayed on each of a plurality of virtual display surfaces for virtual images. A first virtual image display surface and a second virtual image display surface are generated at different positions in the depth direction from the perspective of a viewer, and the ratio between the visibility level of a first virtual image displayed on the first virtual image display surface and the visibility level of a second virtual image displayed on the second virtual image display surface is gradually altered (increased or decreased) according to prescribed parameter information which is presented as numerical values or in multiple levels.Type: GrantFiled: June 22, 2017Date of Patent: February 9, 2021Assignee: NIPPON SEIKI CO., LTD.Inventor: Yuta Kikuchi
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Patent number: 10916225Abstract: The present invention enables prevention of collision with a forward obstacle by prompting an appropriate driving operation according to the relative speed or the relative distance between a host vehicle and the forward obstacle. With respect to a standard display position at which a virtual image is normally displayed in association with an attention object in an actual scene ahead of a host vehicle, the virtual image is displayed at a corrected display position which is on the lower side in the vertical direction and/or on the near side in the depth direction when seen from a viewer, depending on the relative speed or the relative distance between the host vehicle and the attention object in the actual scene.Type: GrantFiled: November 21, 2017Date of Patent: February 9, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Makoto Hada, Yuki Masuya
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Patent number: 10916224Abstract: A head-up display (HUD) device displays a first virtual image in an area in which the first virtual image can be displayed, and displays a second virtual image in an area in which the second virtual image can be displayed. The HUD device includes: a rotation driving unit which changes an angle formed between the area in which the first virtual image can be displayed, and the area in which the second virtual image can be displayed; and a control unit which performs virtual image angle adjustment processing for adjusting the angle using the rotation driving unit, and, when performing the virtual image angle adjustment processing, virtual image position changing processing in which the position of the second virtual image in the area in which the second virtual image can be displayed is changed to inhibit deviation in the relative positional relationship between the first and second virtual images.Type: GrantFiled: November 6, 2017Date of Patent: February 9, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Makoto Hada, Yuki Masuya
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Patent number: 10901209Abstract: The present invention suppresses an increase in optical system curvature, thereby enabling miniaturization. An image forming unit reflects image light beams, which were projected from each region along a first direction of a display, towards a reflection unit so that the image light beams intersect between the image forming unit and the reflection unit. A light distribution adjustment unit is disposed between a light source and a display, and in the first direction, adjusts the orientation of illumination light beams projected from the light source so that the illumination light beams are incident on the display as convergence light.Type: GrantFiled: April 13, 2017Date of Patent: January 26, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi Kasahara, Yuichi Takahashi