Control device for vehicular lamp and vehicle lighting system
US10300839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2018 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jul 9, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q2300/132
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To provide a technique capable of accurately obtaining the attitude of a vehicle in the pitch direction. A device controls the optical axis of a vehicular lamp in accordance with an attitude change in pitch direction of the vehicle having (a) an angle calculation part which obtains acceleration associated with the vertical and the horizontal direction at a predetermined time interval, obtains a first and a second acceleration related to the vertical and the horizontal direction by eliminating the gravitational acceleration component from each acceleration, calculates a vehicle traveling direction acceleration based on the two accelerations, and obtains a vehicle attitude angle based on a correlation between the acceleration and the vehicle traveling direction acceleration, and (b) an optical axis setting part which generates a control signal for controlling the optical axis of the lamp based on the vehicle attitude angle, and provides the control signal to the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.