Invention Grant
- Patent Title: Head-up display apparatus
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Application No.: US16070530Application Date: 2016-10-21
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Publication No.: US10942352B2Publication Date: 2021-03-09
- Inventor: Taizo Miyato , Kazuyuki Ishihara , Kazuhisa Onda
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JPJP2016-008265 20160119
- International Application: PCT/JP2016/081198 WO 20161021
- International Announcement: WO2017/126176 WO 20170727
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02B26/10 ; G02B17/08 ; B60K35/00 ; B60R11/00

Abstract:
A laser projection portion projects multiple laser light fluxes having different wavelengths and superimposed one on another. A scan portion scans the laser light fluxes from the laser projection portion. The image is drawn on a screen member upon incidence of the laser light fluxes scanned by the scan portion. A refraction element portion having positive refractive power is located on a light path between the scan portion and the screen member and adjusts an incident angle of the laser light fluxes to the screen member by refraction. The refraction element portion includes a positive lens part and a negative lens part. The positive lens part has positive refractive power. The negative lens part is made of a medium with a higher dispersing quality than a medium forming the positive lens part and has negative refractive power.
Public/Granted literature
- US20190033586A1 HEAD-UP DISPLAY APPARATUS Public/Granted day:2019-01-31
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