×

Automatic optical-axis adjusting device for automatically adjusting directions of optical axes of front lights with respect to steering angle of steering wheel

  • US 6,671,640 B2
  • Filed: 10/02/2001
  • Issued: 12/30/2003
  • Est. Priority Date: 10/03/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. An automatic optical-axis adjusting device for automatically adjusting a direction of an optical axis of at least one front light of a vehicle, said automatic optical-axis adjusting device comprising:

  • steering angle measuring means for measuring a steering angle of a steering wheel of said vehicle;

    response changing means for changing a response in swivel adjustment of said direction of said optical axis of said at least one front light of said vehicle by changing a filter based on an angular positional change rate of said steering angle measured with said steering angle measuring means, wherein said filter is selected from a group consisting of a weaker filter and a stronger filter, said weaker filter is selected when said angular positional change rate of said steering angle exceeds a predetermined threshold value, and said stronger filter is selected when said angular positional change rate of said steering angle does not exceed said predetermined threshold value; and

    swivel control means for adjusting said direction of said optical axis of said at least one front light with respect to said steering angle measured with said steering angle measuring means based on a control angle obtained through said response changing means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×