Invention Grant
- Patent Title: Vehicle headlight system
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Application No.: US16619002Application Date: 2018-06-01
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Publication No.: US11110853B2Publication Date: 2021-09-07
- Inventor: Takashi Sugiyama
- Applicant: Stanley Electric Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Stanley Electric Co., Ltd.
- Current Assignee: Stanley Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Kenealy Vaidya LLP
- Priority: JPJP2017-112413 20170607
- International Application: PCT/JP2018/021229 WO 20180601
- International Announcement: WO2018/225653 WO 20181213
- Main IPC: F21S41/64
- IPC: F21S41/64 ; F21S41/663 ; B60Q1/14

Abstract:
To prevent a decrease in luminance of the flashed high-beam headlights caused by ambient temperature in a vehicle headlight system using a liquid crystal element. The vehicle headlight system for selectively irradiating light in front of an own vehicle includes: a light source; a liquid crystal element for forming an image using light from the light source where the liquid crystal element is a normally closed liquid crystal element having a relatively low transmittance when no voltage is applied thereto; a driving circuit for driving the liquid crystal element; and a control part that determines whether or not the light source is in a light-off state and controls the driving circuit to set the liquid crystal element to a transmission state when the light source is in the light-off state.
Public/Granted literature
- US20210078486A1 VEHICLE HEADLIGHT SYSTEM Public/Granted day:2021-03-18
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