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Patent Searching and Data


Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/148167
Kind Code:
A1
Abstract:
Provided is a head-up display device capable of projecting a virtual image on a curved surface. A curved optical system (40) receives parallel beams (M) from a collimating optical system (30) and outputs a plurality of transmitted beams (N) by being configured such that a semi-transparent curved surface (41) and a curved reflection surface are arranged opposing each other, said semi-transparent curved surface (41) reflecting a portion of the parallel beams (M) while allowing the other portion to pass through as transmitted beams (N), and said curved reflection surface (42) reflecting parallel beams (M) toward the semi-transparent curved surface (41). The curved optical system (40) has a convex curved shape toward the transmission side such that when the outputted plurality of transmitted beams (N) are reflected by a curved surface, the reflected transmitted beams (N) become display beams (N) representing a virtual image substantially parallel to a first plane (YZ plane).

Inventors:
KASAHARA TSUYOSHI
TAKAHASHI YUICHI
YAMAZOE TAKASHI
Application Number:
PCT/JP2014/053494
Publication Date:
September 25, 2014
Filing Date:
February 14, 2014
Export Citation:
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Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
G02B27/01; B60K35/00
Foreign References:
US20100271698A12010-10-28
US20060215244A12006-09-28
JP2004226469A2004-08-12
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