Maxell, Ltd.

Hitachi Industry & Control Solutions, Ltd.

Hitachi Maxell, Limited

Hitachi, Ltd.

Hitachi Consumer Electronics Co., Ltd.

Kazuomi Kaneko

Koji Hirata

Masahiko Yatsu

Toshinori Sugiyama

Chohei Ono

Akio Misawa

Shigeki Hoshino

Yuki Nagano

Nobuyuki Kaku

Shinro Inui

Nobuki Matsui

Yasuhiko Kunii

Nozomu Shimoda

Masayuki Fukui

Takumi Nakada

Takuya Shimizu

Atsushi Ishibashi

Yuji Fujita

Hiroyuki Kajikawa

Maki Hanada

Kazumasa Ueoka

Souta Sato

Kazuyuki Takizawa

Shinji Matsumoto

Minoru Ikeda

Yoshihiro Iwama

Masayuki Ohki

Tomoki Yamamoto

Kosuke Matoba

Yuta Kawaguchi

Toshiyuki Moriya

Takafumi Ishizu

Sho Nozue

Tatsuya Nakazawa

Satoshi Nakayama

The head-up display apparatus includes: a vehicle information acquisition unit configured to acquire various kinds of vehicle information which can be detected by a vehicle; a controller configured to control display of a video image based on the vehicle information; a video image display configured to form the video image based on an instruction from the controller; a mirror configured to reflect the video image formed by the video image display to project onto the windshield; a mirror driver configured to change an angle of the mirror based on an instruction from the controller; and a display distance adjusting mechanism configured to adjust a display distance of the virtual image with respect to the driver, and the controller adjusts the angle of the mirror via the mirror driver based on the vehicle information such that the virtual image can be displayed with respect to the driver overlapped with the scenery.

Head-up display apparatus

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.

Information display apparatus

A head-up display apparatus includes a display panel configured to display an image, and a reflecting mirror configured to reflect light from the display panel. An optical distance between the reflecting mirror and the display panel is changed to continuously change a display position of a virtual image from a distant place to an adjacent position such that a virtual image obtained by being reflected at an upper portion of a windshield is formed farther than a virtual image obtained by being reflected at a lower portion of the windshield when viewed from a viewpoint position of a driver.

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.

Vehicle

An image display apparatusfor a vehicle is provided with: an image display unitthat has a light source and a display element and outputs image light; a mirrorthat reflects the image light output by the image display unittoward a windshield; a mirror drive unitthat changes the angle and position of the mirror; and a control unitthat determines amounts of change in the angle and position of the mirror and controls the mirror drive unit. The control unitmakes determinations of the amount of change for the angle and position of the mirror in association with each other such that the image is visible even if the position of the driver's eyeschanges and the display state of the image with respect to the driver does not change.

Image display apparatus for vehicle

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.

A HUD device and an image display apparatus for solving a problem that a HUD image cannot be seen in a HUD device that displays a virtual image when wearing the sunglasses having polarization function are provided. A head up display device for a vehicle is provided with an image display apparatus configured to project an image onto a windshield or a combiner by polarized light and means of converting polarization of polarized light of the image projected from the image display apparatus, the means being provided on a part of a light path from the image display apparatus to the windshield or the combiner.

Head up display device and image display apparatus therefor

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.

Light source apparatus and head up display apparatus

A small-sized information display apparatus capable of displaying, as virtual images, different pieces of video image information at different positions in a wide area of a windshield. An embodiment has a virtual image optical system in which a flat display forming video image information is arranged, and that includes a projected member for causing virtual images to be displayed at a plurality of positions ahead of a vehicle by reflecting a video image on the flat display, thereby forming the virtual images at the plurality of positions so as to correspond to a viewpoint position of a driver. The virtual image optical system is arranged so that video image light fluxes for establishing the respective virtual images are separated from and independent of one another between the flat display and a concave mirror, and is configured by arranging different optical elements so as to correspond to the respective light fluxes.

Growing community of inventors

Ibaraki, Japan

Kazuomi Kaneko