Lamp system
AssigneeKoito Manufacturing Co., Ltd.
InventorsTakashi Terayama, Mitsuharu Mano, Takao Muramatsu, Shigeyuki Watanabe, Kana Serizawa, Hikaru Nagai
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Abstract
A high-definition lamp unit contains a plurality of individually controllable pixels, and emits lamp beam having light distribution corresponding to states of the pixels. A first sensor is provided to enable detection of a dynamic component of a pitch angle of a traveling vehicle body. A controller shifts the level of a cut-off line CL of the light distribution up and down, corresponding to the dynamic component of the pitch angle of the vehicle body, with reference to a predetermined level defined as a base.
Claims36
A lamp system comprising:
- an adaptive driving beam lamp structured to emit lamp beam with a variable light distribution;
- a first sensor that contains a gyro sensor;
- a second sensor that contains a vehicle height sensor or an acceleration sensor;
- and
- a controller structured to shift a height of a cut-off line of the light distribution, wherein the height is determined based on a vehicle pitch angle calculated from an output of the first sensor and a vehicle pitch angle calculated from an output of the second sensor.
A method for controlling an adaptive driving beam lamp structured to emit lamp beam with a variable light distribution, the method comprising:
- monitoring a state of a vehicle body, with use of a first sensor that contains a gyro sensor, and a second sensor that contains a vehicle height sensor or an acceleration sensor;
- and
- shifting a height of a cut-off line of the light distribution, wherein the height is determined based on a vehicle pitch angle calculated from an output of the first sensor and a vehicle pitch angle calculated from an output of the second sensor.
A lamp system comprising:
- an adaptive driving beam lamp structured to emit lamp beam with a variable light distribution;
- a first sensor that contains a gyro sensor;
- and
- a controller structured to shift a height of a cut-off line of the light distribution, corresponding to an output of the first sensor,
- the first sensor being arranged on a vehicle side,
- wherein the controller comprises:
- a first processor that is arranged on the vehicle side, and structured to calculate a first pitch angle in response to an output of the first sensor;
- and
- a second processor that is arranged on the vehicle side, and is structured to receive an output of the first processor through a vehicle bus, and to control the height of the cut-off line of the light distribution, in response to the output.
A lamp system comprising:
- an adaptive driving beam lamp structured to emit lamp beam with a variable light distribution;
- a first sensor that contains a gyro sensor;
- and
- a controller structured to shift a height of a cut-off line of the light distribution, corresponding to an output of the first sensor,
- the first sensor being arranged on a vehicle side,
- wherein, in a case where vibration preceded by nose-up occurred on a vehicle on which the adaptive driving beam lamp is mounted, the controller is structured to reduce brightness around the cut-off line, while keeping the height of the cut-off line unchanged, during a period of the first nose-dive.
A lamp system comprising:
- an adaptive driving beam lamp structured to emit lamp beam with a variable light distribution;
- a first sensor that contains a gyro sensor;
- and
- a controller structured to shift a height of a cut-off line of the light distribution, corresponding to an output of the first sensor,
- the first sensor being arranged on a vehicle side,
- wherein the adaptive driving beam lamp contains a plurality of individually controllable pixels, and is structured to create light distribution corresponding to states of the pixels, and
- the controller is structured to shift a boundary between an on-pixel and an off-pixel from among the pixels up and down.
A lamp system comprising:
- an adaptive driving beam lamp arranged in a headlamp, and is structured to emit lamp beam with a variable light distribution;
- a first sensor that contains a gyro sensor arranged in the headlamp, or externally attached to the headlamp;
- and
- a controller structured to shift a height of a cut-off line of the light distribution, wherein the height is determined based on a vehicle pitch angle calculated from an output of the first sensor.
Dependencies are inferred from the claim text.