Title:
ヘッドアップディスプレイ装置及びその照明ユニット
Document Type and Number:
Japanese Patent JP6369148
Kind Code:
B2
Abstract:
An illumination unit includes a plurality of sets of illumination modules each having a light source placed at a conjugate position and a plurality of stages of condenser lenses that collect light from the light source toward a display device, a magnifying optical system being between the conjugate position and a viewing area. Each illumination module set includes an initial stage lens as a condenser lens closest to the light source and a final stage lens as a condenser lens farthest from the light source. In each illumination module set, assuming a composite focal point of a composite lens combined from all stages of condenser lenses, a gap between a principal plane of the initial stage lens and the light source is set to be equal to or less than a gap between the principal plane and the composite focal point.
Inventors:
Takahiro Minamihara
Application Number:
JP2014118741A
Publication Date:
August 08, 2018
Filing Date:
June 09, 2014
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G02B27/01; B60K35/00
Domestic Patent References:
| JP2013164512A | ||||
| JP2008068766A | ||||
| JP2007172997A | ||||
| JP2012163613A | ||||
| JP2009169399A |
Foreign References:
| WO2010061835A1 | ||||
| WO2015107883A1 | ||||
| WO2005066688A1 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo