Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/119407
Kind Code:
A1
Abstract:
An objective of the present invention is to alleviate a decline in visibility from an entry of outside light, and to project a display image with desirable visibility. A head-up display device comprises: a DMD which emits a display light (L') which configures a display image; and a transmissible screen (18) which has a photoreceptor face which receives the display light (L') and an emission face which emits the received display light (L') as diffused light, and which has a diffusion characteristic which makes the distribution of the light intensity of diffused light (L) approximately uniform. The transmissible screen (18) is positioned with the normal of the transmissible screen (18) inclined at a given angle (α) to an optical axis (AX) of the display light (L'), and outside light which reaches the emission face along the optical axis (AX) of the display light (L') is reflected in a different direction from the direction along the optical axis (AX) of the display light (L').
Inventors:
SEKIYA SHUN
Application Number:
PCT/JP2014/050931
Publication Date:
August 07, 2014
Filing Date:
January 20, 2014
Export Citation:
Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
B60K35/00; G02B27/01; G03B21/14; G03B21/62
Foreign References:
| JPH10133283A | 1998-05-22 | |||
| JPH09113995A | 1997-05-02 | |||
| JP2012208440A | 2012-10-25 | |||
| JP2012047934A | 2012-03-08 |
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