Motor vehicle comprising an optical environment sensor and method for operating a motor vehicle

1. A motor vehicle, comprising:

an optical surroundings sensor having a detection range in a detection direction; and

a deflection arrangement for the optical surroundings sensor, the deflection arrangement comprising:

an optical arrangement configured to deflect the detection direction and the detection range; and

an adjustment device configured to move the optical arrangement into and out of the detection range of the surroundings sensor, wherein:

the adjustment device is configured to extend or fold out the optical arrangement from a basic position recessed in a vehicle body of the motor vehicle into a deflection position; and

the optical arrangement is arranged, in the basic position, behind a flap and is configured to be opened by the adjustment device or by a movement of the optical arrangement.

2. The motor vehicle according to claim 1 , wherein, without using the optical arrangement, the detection direction of the optical surroundings sensor is aligned to a region in front of the motor vehicle, parallel to or along a longitudinal axis of the motor vehicle.

3. The motor vehicle according to claim 1 , wherein a deflected detection direction is aligned toward a rear space of the motor vehicle, parallel to or along a longitudinal axis of the motor vehicle.

4. The motor vehicle according to claim 1 , wherein a deflected detection direction is aligned toward a side region of the motor vehicle, parallel to or along a transverse axis of the motor vehicle.

5. The motor vehicle according to claim 1 , wherein the optical surroundings sensor is a Lidar sensor or a camera.

6. The motor vehicle according to claim 5 , wherein the Lidar sensor comprises a close-range sensor head and a far-range sensor head, and the optical arrangement is configured only to deflect a detection range of the far-range sensor head.

7. The motor vehicle according to claim 1 , wherein the optical arrangement comprises a mirror.

8. The motor vehicle according to claim 1 , further comprising:

a driver assistance system that evaluates sensor data from the optical surroundings sensor; and

a control device designed for situation-dependent use of the deflection arrangement through controlling the adjustment device.

9. The motor vehicle according to claim 8 , wherein the optical arrangement comprises an actuator controlled by the control device for setting different deflected detection directions based on a situation.

10. The motor vehicle according to claim 8 , wherein the adjustment device comprises sub-devices independently controlled by the control device for setting different deflected detection directions based on a situation.

11. The motor vehicle according to claim 8 , wherein the driver assistance system comprises a longitudinal driving system or a lane change assistance system, wherein a non-deflected detection direction of the optical surroundings sensor is directed towards a region in front of the motor vehicle, and the optical arrangement to deflect the detection direction is formed on a rear space of the motor vehicle.

12. The motor vehicle according to claim 11 , wherein the control device is designed to control the deflection arrangement to deflect the detection direction when an intention to change lanes is detected.

13. The motor vehicle according to claim 8 , wherein the driver assistance system comprises an intersection assistance system, wherein a non-deflected detection direction of the optical surroundings sensor is directed towards a region in front of the motor vehicle, and the optical arrangement to deflect the detection direction is formed in a lateral direction.

14. The motor vehicle according to claim 1 , wherein the optical arrangement is configured to deflect the detection direction while keeping the detection range geometrically unchanged.

15. A method for operating a motor vehicle, comprising:

controlling an adjustment device to deflect a detection direction of a surrounding sensor by moving an optical arrangement into a detection range of the surroundings sensor based on a deflection condition that evaluates a current driving situation of the motor vehicle or a current operating situation of a driver assistance system:

extending or folding out the optical arrangement by the adjustment device from a basic position recessed in a vehicle body of the motor vehicle into a deflection position; and

opening the optical arrangement by the adjustment device or by a movement of the optical arrangement from the basic position behind a flap.

16. The method according to claim 15 , further comprising:

aligning a non-deflected detection direction of the surroundings sensor to a region in front of the motor vehicle, parallel to or along a longitudinal axis of the motor vehicle.

17. The method according to claim 15 , further comprising:

aligning a deflected detection direction toward a rear space of the motor vehicle, parallel to or along a longitudinal axis of the motor vehicle.

18. The method according to claim 15 , further comprising:

aligning a deflected detection direction toward a side region of the motor vehicle, parallel to or along a transverse axis of the motor vehicle.

19. The method according to claim 15 , further comprising:

deflecting only a detection range of a far-range sensor head when the surroundings sensor comprises a close-range sensor head and the far-range sensor head.

20. The method according to claim 15 , further comprising:

evaluating, by a driver assistance system, sensor data from the surroundings sensor; and

controlling the adjustment device by a control device designed for situation-dependent use of a deflection arrangement of the motor vehicle.