Vehicular lamp system for automotive vehicle

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the gain setting section of the controller sets the gain variably in the predetermined range, and
• wherein the predetermined range is between ⅙ and ½.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the gain setting section of the controller sets gain fixedly in the predetermined range, and
• wherein the predetermined range is between ⅙ and ½.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the predetermined range is between ⅙ and ½, and
• wherein the gain setting section of the controller sets the gain variably in the predetermined range according to a human related information caused by a vehicular driver.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the predetermined range is between ⅙ and ½, and
• wherein the gain setting section of the controller sets the gain in accordance with an environment surrounding the vehicle.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the predetermined range is between ⅙ and ½,
• wherein the gain setting section of the controller sets the gain variably in the predetermined range, and wherein the controller further comprises another setting section that sets a maximum value of the displacement angle of the displaceable light distribution section up to which the displaceable light distribution section is enabled to be displaced in accordance with a vehicular velocity.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the predetermined range is between ⅙ and ½, and
• wherein the vehicular lamp system is mounted in an automotive vehicle.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to at least horizontally displace its light distribution state from the optical axis of the light source by the displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle to fall in a predetermined range such as to displace the displaceable light distribution section by a predetermined displacement angle smaller than the detected value of the steering angle,
• wherein the predetermined range is between 0.167 and 0.5.

A vehicular lamp system, comprising:

• a displaceable light distribution section that radiates a light from a light source into a predetermined light distribution area and is enabled to displace a light distribution state thereof toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• a drive section to drive the displaceable light distribution section to at least horizontally displace its light distribution state from an optical axis of the light source by a displacement angle;
• a steering angle sensor to detect a steering angle of a vehicular steering wheel;
• and
• a controller to control the drive section to displace the displaceable light distribution section by the displacement angle in accordance with a detected value of the steering angle, the controller comprising a gain setting section that sets a gain prescribing the displacement angle of the displaceable light distribution section with respect to the detected value of the steering angle and a visibility of the light distribution area corresponding to an inverse of a level of insufficient feeling in a sensory evaluation test,
• wherein the gain prescribes the displacement angle with respect to the detected value of the steering angle to fall in a predetermined range between ⅙ and ½.

A vehicular lamp system, comprising:

• displaceable light distributing means for radiating a light from a light source into a predetermined light distribution area, the displaceable light distributing means being enabled to displace its light distribution state toward a direction toward which a displacement angle thereof to an optical axis of the light source is formed;
• driving means for driving displaceable light distributing means to at least horizontally displace the light distribution state from the optical axis of the light source by a displacement angle;
• steering angle sensing means for detecting a steering angle of a vehicular steering wheel;
• and
• controlling means for controlling the driving means to displace the light distributing means by the displacement angle in accordance with a detected value of the steering angle, the controlling means comprising gain setting means for setting a gain prescribing the displacement angle with respect to a detected value of steering angle to fall in a predetermined range such as to displace the displaceable light distributing means by a predetermined displacement angle which is smaller than the detected value of the steering angle,
• wherein the predetermined range is between ⅙ and ½.

A method of adjusting a light distribution area of a head light on a vehicle, comprising:

• detecting a steering angle of the vehicle;
• calculating a displacement angle of the head light with respect to the detected steering angle;
• applying a gain to the calculated displacement angle such that the displacement angle with applied gain is smaller than the detected steering angle;
• and
• horizontally displacing the headlight by the displacement angle with applied gain,
• wherein the gain is in a predetermined range of about ⅙ to about ½.