Invention Grant
- Patent Title: Irradiating direction control system for a vehicle lamp
- Patent Title (中): 车灯用的辐射方向控制系统
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Application No.: US12369023Application Date: 2009-02-11
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Publication No.: US08032286B2Publication Date: 2011-10-04
- Inventor: Masashi Yamazaki
- Applicant: Masashi Yamazaki
- Applicant Address: JP Tokyo
- Assignee: Koito Manufacturing Co., Ltd.
- Current Assignee: Koito Manufacturing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Fish & Richardson P.C.
- Priority: JP2008-031313 20080213
- Main IPC: B60Q1/08
- IPC: B60Q1/08 ; G02B26/08 ; G06F19/00

Abstract:
A system for controlling an irradiating direction of a vehicle lamp includes a target swivel angle calculating section to calculate a target swivel angle based on a vehicle steering angle, a swivel driver to execute, based on the target swivel angle, a swivel control to swivel the irradiating direction, and a fail-safe controller to execute, upon detection of a failure in the system, a fail-safe operation to stop the swivel control. When the system is restored after the failure, the fail-safe controller determines whether the target swivel angle is within a straight-ahead range that includes an angle corresponding to a straight-ahead direction of a vehicle. If the fail-safe controller determines that the target swivel angle is within the straight-ahead range, the fail-safe controller deactivates the fail-safe operation to restart the swivel control.
Public/Granted literature
- US20090204298A1 IRRADIATING DIRECTION CONTROL SYSTEM FOR A VEHICLE LAMP Public/Granted day:2009-08-13
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