公开(公告)号：US20180356631A1

公开(公告)日：2018-12-13

申请号：US15779056

申请日：2016-11-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SATOSHI KUZUHARA ,  HIROAKI OKAYAMA ,  YOSUKE ASAI

IPC: G02B27/01 ,  B60K35/00 ,  G02B3/02 ,  B60K37/04

CPC classification number: G02B27/0101 ,  B60K35/00 ,  B60K37/04 ,  B60K2350/2052 ,  B60K2350/2082 ,  B60R2300/205 ,  B60W2050/146 ,  G02B3/02 ,  G02B5/3025 ,  G02B5/3083 ,  G02B2027/012

Abstract: Head-up display includes display device and projection optical system. Display device displays an image. Projection optical system includes refraction lens. Projection optical system projects the image displayed on display device to an observer. Refraction lens is disposed while inclined with respect to a reference beam. An incident surface of refraction lens is a concave surface relative to a side of display device in an X-axis direction. A curvature in a Y-axis direction of the incident surface is smaller than a curvature in the X-axis direction.

公开(公告)号：US20180314064A1

公开(公告)日：2018-11-01

申请号：US16026109

申请日：2018-07-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KEN'ICHI KASAZUMI ,  TOSHIYA MORI ,  HIROAKI OKAYAMA ,  SATOSHI KUZUHARA ,  YOSUKE ASAI

IPC: G02B27/01 ,  G02B3/08 ,  B60K35/00

CPC classification number: B60K35/00 ,  G02B3/08 ,  G02B27/01

Abstract: A head-up display includes an optical system that radiates light forming a projected image toward an eye box. The eye box is a predetermined range in which eyes of an observer are assumed to be present. The optical system includes a Fresnel lens having a bumpy surface having a sawtooth-shaped cross-section. The bumpy surface is formed concentrically around an optical axis, and formed by alternately disposing first surfaces as light condensing surfaces that allow incident light to converge toward a focal point, and second surfaces as wall surfaces that do not allow the incident light to converge toward the focal point. The second surfaces are inclined with respect to the optical axis of the Fresnel lens at an angle to reflect the incident light striking the wall surfaces, in a direction toward outside of a range of the eye box.

公开(公告)号：US20180188530A1

公开(公告)日：2018-07-05

申请号：US15738645

申请日：2016-06-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KEN'ICHI KASAZUMI ,  TOSHIYA MORI ,  HIROAKI OKAYAMA ,  SATOSHI KUZUHARA

IPC: G02B27/01 ,  G02B27/00 ,  G09G3/00

Abstract: To provide a display device that can suppress generation of a double image. Display device includes plate-shape windshield having translucency and a projection unit that projects light expressing an image onto windshield such that the light is reflected toward a user by windshield. The projection unit changes a display distance between an eye of the user and a position of an image visually recognized as a virtual image by the user through windshield by the light projection. Windshield is formed such that a wedge angle that is of an angle formed between a front side and a back side at a region located at any level of windshield is continuously decreased with increasing level.

公开(公告)号：US20180088327A1

公开(公告)日：2018-03-29

申请号：US15830195

申请日：2017-12-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SATOSHI KUZUHARA ,  MASAFUMI SUEYOSHI ,  HIROAKI OKAYAMA ,  KATSUHIKO HAYASHI

IPC: G02B27/01 ,  B60K35/00 ,  H04N9/31

CPC classification number: G02B27/0101 ,  B60K35/00 ,  B60K2370/334 ,  B60R11/02 ,  G02B17/08 ,  G02B17/0852 ,  G02B27/01 ,  G02B2027/014 ,  G02B2027/0145 ,  G02B2027/0154 ,  G02B2027/0185 ,  H04N9/3135

Abstract: Head-up display projects an image on transparent windshield to cause an observer to visually recognize a virtual image. Head-up display includes screen, optical system displays the image. Optical system projects the image displayed by screen on windshield. Driving unit moves screen. Optical system forms an intermediate image between optical systems, the intermediate image being larger than the image of screen.

公开(公告)号：US20180039077A1

公开(公告)日：2018-02-08

申请号：US15728543

申请日：2017-10-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SATOSHI KUZUHARA ,  MASAFUMI SUEYOSHI ,  HIROAKI OKAYAMA ,  KATSUHIKO HAYASHI

IPC: G02B27/01

CPC classification number: G02B27/0101 ,  B60K35/00 ,  B60R11/02 ,  G02B17/0663 ,  G02B17/0816 ,  G02B27/01 ,  G02B27/0176 ,  G02B27/0179 ,  G02B2027/011 ,  G02B2027/013 ,  G02B2027/014 ,  G02B2027/0145 ,  G02B2027/0154 ,  G02B2027/0185

Abstract: A head-up display projects an image on a windshield to allow a viewer to visually observe a virtual image. The head-up display includes a display device, a relay optical system, and a projection optical system. The display device displays an image. The relay optical system provides the image displayed by the display device as an intermediate image. The projection optical system reflects the intermediate image provided by the relay optical system to project the intermediate image on the windshield.