Optical method and device for measuring a distance from an obstacle
First Claim
1. Optical device for measuring the distance from an obstacle, including:
- a unit to emit a radiation and to conform the irradiated beam,an acquisition unit to acquire information relating to the image of the scene situated in front of said optical device,an electronic control and processing unit to receive signals leaving said acquisition unit in order to determine the distance between said optical device and an obstacle which is part of the scene in front of the optical device,wherein said emission unit is predisposed to emit a beam having a transverse section of a form elongated along an axis, said axis being progressively rotated for transverse sections of the beam progressively more distant from the emission unit, in such a manner that the distance of the optical device from one or more obstacles illuminated by the beam is calculated by said electronic control and processing unit as a function of the angular position of said axis on the section of the beam intercepted by the obstacle, as acquired by said means of acquisition.
1 Assignment
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Accused Products
Abstract
An optical device to measure the distance between the device itself and an obstacle/object comprising a unit to emit radiation including an aligned series of sources of radiation coupled to a series of arrangements of lenses to guide the radiation emitted by the sources. An optical acquisition unit comprising a matrix of photodetectors has a field of view including the scene in front of the optical device and including the obstacle. The signals leaving the acquisition unit are sent to a control and processing unit for calculation of the distance from the obstacle. The unit for the emission and conformation of the radiation emits a beam having a transverse section of a form elongated along an axis that is progressively rotated for transverse sections of the beam progressively more distant from the emission unit. In this manner, the distance of the obstacle may be calculated on the basis of the angular position of the section of the beam intercepted by the obstacle, as acquired by said acquisition unit.
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Citations
32 Claims
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1. Optical device for measuring the distance from an obstacle, including:
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a unit to emit a radiation and to conform the irradiated beam, an acquisition unit to acquire information relating to the image of the scene situated in front of said optical device, an electronic control and processing unit to receive signals leaving said acquisition unit in order to determine the distance between said optical device and an obstacle which is part of the scene in front of the optical device, wherein said emission unit is predisposed to emit a beam having a transverse section of a form elongated along an axis, said axis being progressively rotated for transverse sections of the beam progressively more distant from the emission unit, in such a manner that the distance of the optical device from one or more obstacles illuminated by the beam is calculated by said electronic control and processing unit as a function of the angular position of said axis on the section of the beam intercepted by the obstacle, as acquired by said means of acquisition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. Method to measure the distance of an obstacle, in which:
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a unit is predisposed to emit radiation and to conform the irradiated beam, the image in front of said emission unit is acquired, the distance between said emission unit and an obstacles part of the scene thus acquired is calculated, wherein the beam emitted by said emission unit is conformed in such a manner as to have a transverse section of a form elongated along an axis that is progressively rotated for transverse sections of the beam progressively more distant from the emission unit, in such a manner that the distance of the emission unit from an obstacle illuminated by the beam is calculated as a function of the angular position of the section of beam intercepted by the obstacle.
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Specification