ADAPTIVE ANGLE AND POWER ADAPTATION IN 3D-MICRO-MIRROR LIDAR
First Claim
1. A device for recording a geometry of an environment of a device in a detection field with the aid of laser scanning, comprising:
- an oscillating micromechanical mirror;
a laser beam controlled by the oscillating micromechanical mirror; and
an arrangement via which to specify the detection field in a vertical direction and a horizontal direction by adapting at least one of an amplitude of oscillation of the micromechanical mirror and an oscillation frequency of the micromechanical mirror.
1 Assignment
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Accused Products
Abstract
A device for recording a geometry of an environment of a device in a detection field with the aid of laser scanning may include a laser beam controlled by an oscillating micromechanical mirror. The detection field is specifiable in the vertical and horizontal directions by adapting an amplitude of oscillation of the micromechanical mirror. Driver-assistance systems are used for tasks both in the near field, such as a parking function, and in the distant field of the vehicle, such as a distance control or the detection of obstacles on the roadway. If the amplitude of the oscillation of the micro-mirror is then reduced in the horizontal direction and/or vertical direction, the spatial resolution for the reduced detection range is improved. Moreover, the higher intensity of the laser radiation impinging on the smaller detection region improves the signal-to-noise ratio of the detected signal.
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Citations
12 Claims
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1. A device for recording a geometry of an environment of a device in a detection field with the aid of laser scanning, comprising:
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an oscillating micromechanical mirror; a laser beam controlled by the oscillating micromechanical mirror; and an arrangement via which to specify the detection field in a vertical direction and a horizontal direction by adapting at least one of an amplitude of oscillation of the micromechanical mirror and an oscillation frequency of the micromechanical mirror. - View Dependent Claims (2, 3, 4)
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5. A method for recording a geometry of an environment in a detection field with the aid of laser scanning using a device including a laser beam controlled by an oscillating micromechanical mirror, the device determining a contour of the environment from an intensity, specified by a receiver, of laser radiation backscattered or reflected from the environment, and the device determining a distance of objects in the environment from a propagation time of laser pulses, the method comprising:
specifying the detection field by an adaptation of an amplitude of oscillation of the micromechanical mirror in a vertical direction and a horizontal direction. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
Specification