Automatic optical-axis adjusting device for automatically adjusting directions of optical axes of front lights with respect to steering angle of steering wheel
US6671640B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/128
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A filter is changed to change a response in swivel adjustment of a direction of an optical axis of each swivel light based on a steering angle variation of a steering angle of a steering wheel measured with a steering angle sensor. The direction of the optical axis of each swivel light is adjusted based on a swivel control angle obtained upon application of the filter. A weaker filter is selected if the steering wheel is quickly steered, and a stronger filter is selected if the steering wheel is slowly steered. By this filtering operation, the direction of the optical axis of each swivel light is adjusted in response to the steering operation of the steering wheel without causing an uncomfortable feeling to a driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.