Invention Grant
- Patent Title: Head-up display apparatus
- Patent Title (中): 平视显示装置
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Application No.: US12056946Application Date: 2008-03-27
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Publication No.: US08289229B2Publication Date: 2012-10-16
- Inventor: Toshiki Ishikawa , Hiroshi Ando , Takayuki Fujikawa
- Applicant: Toshiki Ishikawa , Hiroshi Ando , Takayuki Fujikawa
- Applicant Address: JP Kariya, Aichi-Pref.
- Assignee: Denso Corporation
- Current Assignee: Denso Corporation
- Current Assignee Address: JP Kariya, Aichi-Pref.
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2007-88939 20070329; JP2008-29074 20080208
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A head-up display apparatus allows an occupant of a vehicle to visually perceive a virtual image of an image light reflected by a windshield after passing through a cylindrical lens. The cylindrical lens is inclined against the image light to thereby reflect outside light not to reach an eye range of the occupant. The cylindrical lens is placed in a light guide portion such that (i) an action axis direction for an optical action and (ii) a horizontal direction in the display image agree with each other. Of the cylindrical lens, an inclination angle and installation depth are so set that light incident at an angle equal to or greater than an interception upper-limit incident angle and reflected by a pass-through side of the cylindrical lens does not arrive at the eye range of the occupant.
Public/Granted literature
- US20080238814A1 HEAD-UP DISPLAY APPARATUS Public/Granted day:2008-10-02
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