Invention Grant
- Patent Title: Automotive headlamp with S-polarizer filter to reduce glare
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Application No.: US15685093Application Date: 2017-08-24
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Publication No.: US10408408B2Publication Date: 2019-09-10
- Inventor: Linsheng Chen , Steven J. Antilla
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Price Heneveld LLP
- Agent Vichit Chea
- Main IPC: F21S41/20
- IPC: F21S41/20 ; F21V9/14 ; F21V5/04 ; F21V7/08 ; F21V13/14 ; F21S41/141 ; F21S41/32 ; F21S41/135 ; F21S41/143 ; F21S41/255 ; F21S41/26 ; F21S41/365 ; F21Y115/10

Abstract:
A headlamp for a vehicle comprises: a light source emitting light forming a beam pattern, the light comprising light waves having an electric field vector oscillating in all directions perpendicular to a path of travel of the light wave, and the beam pattern comprising a foreground portion relative to a horizontal axis and a non-foreground portion; and one or more filters dedicated to the foreground portion of the beam pattern that does not transmit light waves having an electric field vector oscillating in a direction parallel to the horizontal axis. The light source can be one or more light emitting diodes. The filter can be an absorptive polarizer. The absorptive polarizer can be a polarizing sheet.
Public/Granted literature
- US20190063715A1 AUTOMOTIVE HEADLAMP WITH S-POLARIZER FILTER TO REDUCE GLARE Public/Granted day:2019-02-28
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