Title:
HEAD-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2013/190959
Kind Code:
A1
Abstract:
A head-up display is provided with a display means, a transparent member, and a reflection-type polarization element. The head-up display is also provided with a transparent screen capable of displaying a display image by reflecting display light emitted from the display means. The reflection-type polarization element is provided so as to be in contact with either the transparent member or a resin layer. The display light enters from a first surface of either the transparent member or the resin layer provided so as to be in contact with the reflection-type polarization element, said first surface being in contact with air. The display light is p-polarized light parallel with respect to an incidence plane. The reflection-type polarization element is disposed such that the reflection axis is parallel with the display-light polarization axis. If the Brewster's angle at the interface between the air and the material forming the first surface is θb1 (on condition that θb1 is in the range of 0-90˚), the angle of incidence θ1 on the first surface is substantially in the range θb1±20˚.
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Inventors:
KURIHARA KAZUYUKI (JP)
IKEDA YASUHIRO (JP)
SAKAMOTO HIROSHI (JP)
IKEDA YASUHIRO (JP)
SAKAMOTO HIROSHI (JP)
Application Number:
PCT/JP2013/064789
Publication Date:
December 27, 2013
Filing Date:
May 28, 2013
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
G02B27/01; B60K37/00
Foreign References:
| JP2006512622A | 2006-04-13 | |||
| JPH08259280A | 1996-10-08 | |||
| JPH06273691A | 1994-09-30 | |||
| JPH1195156A | 1999-04-09 | |||
| JP2007101677A | 2007-04-19 | |||
| JP2010204626A | 2010-09-16 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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