Title:
ヘッドアップディスプレイ装置
Document Type and Number:
Japanese Patent JP5344069
Kind Code:
B2
Abstract:
A screen member diffuses a bundle of rays of light projected from a laser scanner such that the bundle of rays of light is guided to a viewing range. The screen member includes a plurality of optical elements. A surface of each optical element forms a curved surface that diffuses the bundle of rays of light, which enters the curved surface. The optical elements are arranged in a lattice pattern at each corresponding pitch that is set to adjust a peak-to-peak interval of diffracted rays, which are formed in the viewing range by diffraction of the bundles of rays diffused by the plurality of optical elements, to a value that is equal to or smaller than a diameter of a pupil of the viewer.
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Inventors:
Takuyuki Fujikawa
Hiroshi Ando
Hiroshi Ando
Application Number:
JP2012148794A
Publication Date:
November 20, 2013
Filing Date:
July 02, 2012
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G02B27/01; B60K35/00; G02B3/00; G02B5/10; G02B17/08; G03B21/10; G03B21/60
Domestic Patent References:
| JP2010145745A | ||||
| JP2006251126A | ||||
| JP2008046217A |
Foreign References:
| WO2012117495A1 | ||||
| WO2012140765A1 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo