Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Haruhiko Okumura, Kanagawa-Ken JP

Haruhiko Okumura, Kanagawa-Ken JP

Patent application numberDescriptionPublished
20090135374DISPLAY DEVICE AND VEHICLE BASED THEREON - A display device includes: a light source configured to generate a coherent light beam; and an optical plate including a plurality of microlenses arranged with a period larger than the diameter of the light beam, the optical plate being configured to control the divergence angle of the light beam.05-28-2009
20090153962HEAD-UP DISPLAY OPTICAL FILM, HEAD-UP DISPLAY, AND VEHICLE - A head-up display optical film includes: a first optical layer configured to convert the polarization plane of incident light by 90 degrees; a second optical layer configured to convert the polarization plane of incident light by 90 degrees; and an intermediate optical layer sandwiched between the first optical layer and the second optical layer and having a refractive index that is different from the refractive index of the first optical layer and from the refractive index of the second optical layer.06-18-2009
20090201225DISPLAY APPARATUS AND MOBILE APPARATUS - A display apparatus includes a light-flux-generating section configured to generate a light flux containing image information; a light-flux-controlling section configured to control the light flux and making the light flux come toward a head of an observer, and an image-taking section configured to take an image of the observer. At least one of the light-flux-generating section and the light-flux-controlling section include a movable unit in which at least one of position and focus of the light flux can be adjusted with the observer watching the taken image by the image-taking section.08-13-2009
20090237803DISPLAY DEVICE, DISPLAY METHOD AND HEAD-UP DISPLAY - A display device includes: an image projection section configured to project a light flux including an image toward a head of a viewer; an imaging section configured to image a picture of the viewer; a control section configured to control a projection area and a projection position of the light flux by controlling the image projection section on the basis of the picture; and a target eye detection section configured to detect a one-eye served as a target of the projection position of both eyes of the viewer on the basis of the picture.09-24-2009
20090244702REFLECTIVE SCREEN, DISPLAY DEVICE, AND MOBILE APPARATUS - A reflective screen includes: a substrate having a first refractive index; and a periodic structure provided on a major surface of the substrate and including a periodic film which has a period Λ and is made of a material having a second refractive index that is higher than the first refractive index. The period Λ is not less than 400/(N+1) nm and not more than 680/(N−1) nm, where N is an equivalent refractive index of the periodic film.10-01-2009
20100066984DISPLAY DEVICE AND MOBILE APPARATUS - A display device is provided that includes: a projection unit emitting a light flux including image information; and a divergence angle controlling unit controlling a divergence angle of the light flux emitted from the projection unit to not more than a prescribed angle. The divergence angle controlling unit includes a transmission unit transmitting the light flux emitted from the projection unit and a light shielding unit shielding part of the light flux, and the part of the light flux is shielded by the light shielding unit so that the divergence angle of the light flux is controlled to not more than a prescribed angle.03-18-2010
20100073579OPTICAL MEMBER, DISPLAY DEVICE USING THE OPTICAL MEMBER AND MOVABLE BODY USING THE DISPLAY DEVICE - There is provided an optical member comprising: a first optical layer having: a first main face formed with a concave section having a concave curved surface, and a plurality of convex ridges having concave curved surfaces provided in concentric circular fashion around said concave section; and a second main face formed with: a convex section having a convex curved surface that is provided facing the concave section and constituting a second main face facing the first main face; and a plurality of convex ridges having convex curved surfaces provided facing the plurality of convex ridges having the concave curved surface, provided in concentric circular fashion around the convex section; and a second optical layer provided on the first main face of the first optical layer; and a third optical layer provided on the second main face of the first optical layer; wherein the refractive index of the first optical layer is higher than the refractive index of the second optical layer and is higher than the refractive index of the third optical layer.03-25-2010
20100073636DISPLAY APPARATUS FOR VEHICLE AND DISPLAY METHOD - A display apparatus for vehicle includes: an image projector configured to project a light flux including an image having a display object toward a one eye of an image viewer; and a position detector configured to detect the one eye of the image viewer. The image projector changes at least one of a position, a shape and a size of the display object in the image on the basis of a position of the one eye detected by the position detector.03-25-2010
20100073773DISPLAY SYSTEM FOR VEHICLE AND DISPLAY METHOD - A display system for vehicle includes an outside information-obtaining section configured to obtain outside information of a moving object; a position-detecting section configured to detect a position of one eye of an image viewer getting on the moving object; and an image-projecting section. The image-projecting section is configured to obtain a position of a target in the outside information obtained by the outside information-obtaining section, to generate a display object on the basis of the obtained position of the target, and to project a light flux including an image having the generated display object toward the one eye of the image viewer on the basis of the detected position of the one eye.03-25-2010
20100157430AUTOMOTIVE DISPLAY SYSTEM AND DISPLAY METHOD - An automotive display system includes a frontward information acquisition unit, a position detection unit and an image projection unit. The frontward information acquisition unit acquires frontward information. The frontward information includes information relating to a frontward path of a vehicle. The position detection unit detects a position of one eye of an image viewer riding in the vehicle. The image projection unit generates a first virtual image at a corresponding position in scenery of the frontward path based on the frontward information acquired by the frontward information acquisition unit and projects a light flux including an image including the generated first virtual image toward the one eye of the image viewer based on the detected position of the one eye. The first virtual image has a size corresponding to at least one of a vehicle width and a vehicle height.06-24-2010
20100164702AUTOMOTIVE DISPLAY SYSTEM AND DISPLAY METHOD - An automotive display system includes an image projection unit and an angle information acquisition unit. The image projection unit projects a light flux including an image including a display object toward one eye of an image viewer. The angle information acquisition unit acquires at least one of vehicle angle information and external environment angle information. The vehicle angle information relates to an angle of at least one of an attitude and a heading of a vehicle carrying the image viewer. The external environment angle information relates to an angle of a background object at a target position of the display object in a background of an external environment of the vehicle. The image projection unit changes an angle of the display object in the image based on at least one of the vehicle angle information and the external environment angle information acquired by the angle information acquisition unit.07-01-2010
20100164845MODULATION APPARATUS AND IMAGE DISPLAY APPARATUS - A differential data array group, which have at least a plurality of pairs of a differential data to transmit a serial signal, includes difference absolute value data having a plurality of bits to represent an absolute value obtained by converting gray scale level data of red, green and blue to binary number data, and sign data having at least one bit to represent a sign of the gray scale level data. With respect to one pair of the differential data, gray scale level data corresponding to one pixel are arranged in an ascending order or a descending order. With respect to another pair of the differential data, the sign data corresponding to one pixel are arranged into a former half or a latter half of a time period corresponding to one pixel. Data of a highest order bit of the difference absolute value data corresponding to one pixel are arranged into the latter half or the former half of the time period corresponding to one pixel.07-01-2010
20100214635DISPLAY DEVICE, DISPLAY METHOD AND HEAD-UP DISPLAY - A display device, generating light flux containing image information and making the light flux incident to one-eye of an image viewer by controlling an angle of divergence of the light flux is provided. The device includes a first lens, a second lens and an angle of divergence control device provided between the first lens and the second lens, the angle of divergence control device being configured to control the angle of divergence of the light flux.08-26-2010

Patent applications by Haruhiko Okumura, Kanagawa-Ken JP