Title:
Head-up display device
Document Type and Number:
Japanese Patent JP6319355
Kind Code:
B2
Abstract:
An illumination light from each light emitting device illuminates a corresponding region of an image forming unit to form an image. A light condensing unit has multiple lens elements paired with the respective light emitting devices. Each condenser lens element has a light condensing surface to condense the illumination light. A z-direction is a direction connecting a surface vertex of the light condensing surface with the light emitting device paired with the surface vertex. An x-direction and a y-direction are orthogonal to each other on a virtual plane orthogonal to the z-direction. The pair of the condenser lens element and the light emitting device is aligned in at least one of the x-direction and the y-direction. Each light condensing surface is formed in a convex shape in which a curvature in the x-direction and a curvature in the y-direction are different from each other.
Inventors:
Takahiro Minamihara
Application Number:
JP2016080580A
Publication Date:
May 09, 2018
Filing Date:
April 13, 2016
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G02B27/01; B60K35/00; G02B3/00; G02B3/04
Domestic Patent References:
| JP2015232608A | ||||
| JP2015219425A | ||||
| JP2009510496A |
Foreign References:
| US20130342905 | ||||
| WO2016092724A1 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo