Invention Grant
- Patent Title: Vehicle headlight with polarized light generator
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Application No.: US16629060Application Date: 2018-07-06
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Publication No.: US10823352B2Publication Date: 2020-11-03
- Inventor: Satoshi Yamamura , Kenta Mukojima , Yusuke Nakada
- Applicant: KOITO MANUFACTURING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: KOITO MANUFACTURING CO., LTD.
- Current Assignee: KOITO MANUFACTURING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Pearne & Gordon LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@49fd07ad
- International Application: PCT/JP2018/025624 WO 20180706
- International Announcement: WO2019/013113 WO 20190117
- Main IPC: F21S41/135
- IPC: F21S41/135 ; F21S41/675

Abstract:
The present invention relates to a vehicle headlight that ensures maintaining usage efficiency of a light of the vehicle headlight while improving visibility of an irradiation target on a road by a headlight light from a host vehicle. A vehicle headlight 1 having a headlight unit 4 forming a light distribution pattern by projecting a light B1 from a light source 9 ahead includes a polarized light generator 8, a first headlight unit 5, and a second type headlight unit 6. The polarized light generator 8 generates a first and a second polarized lights (B11, B12) by the light B1 from the light source 9. The first headlight unit 5 indicates main light distribution patterns (La1, Lb1) by a first polarized light B11 ahead. The second type headlight unit 6 scans with a second polarized light B12 using a scanning mechanism 13, and indicates ahead auxiliary light distribution patterns (La2, Lb2) irradiating a range narrower than the main light distribution patterns (La1, Lb1).
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