Surround sensing system with telecentric optics
First Claim
1. A vehicle-mountable system for detecting a characteristic of an object, the system comprising:
- a radiation source configured to generate a simultaneously pulsed radiation pattern composed of radiation spots;
at least one detector having a plurality of pixels;
a processor configured to process data from the at least one detector when radiation from the radiation source is reflected by an object and detected by the at least one detector;
a synchronization means interfacing between the at least one detector and the radiation source;
wherein;
the synchronization means is configured for synchronizing the at least one detector with the radiation source so that detection by the detector of radiation from the radiation source to be processed is detected only during the radiation pulses,the processor is configured to determine a characteristic of the object by determining a displacement of detected spots detected with the at least one detector with reference to predetermined reference spot positions based on triangulation, andthe radiation source emits monochromatic light and the at least one detector is equipped with a corresponding narrow bandpass filter and optics arranged so as to modify an angle of incidence onto said narrow bandpass filter, to confine said angle of incidence to a predetermined range around a normal of a main surface of said narrow bandpass filter, said optics comprising an image-space telecentric lens.
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Accused Products
Abstract
The invention pertains to a system comprising: a source to generate a pulsed radiation pattern; a detector; a processor to process data from the detector when radiation is reflected by an object; a synchronization means interfacing between the detector and the source; wherein: the detector is synchronized with the source so that radiation to be processed is detected only during the pulses, the processor determines a characteristic of the object by determining displacement of detected spots with reference to predetermined positions, the source emits monochromatic light and the detector is equipped with a bandpass filter and optics arranged so as to modify an angle of incidence onto said filter to confine light to a predetermined range around a normal of said filter, said optics comprising an image-space telecentric lens.
54 Citations
14 Claims
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1. A vehicle-mountable system for detecting a characteristic of an object, the system comprising:
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a radiation source configured to generate a simultaneously pulsed radiation pattern composed of radiation spots; at least one detector having a plurality of pixels; a processor configured to process data from the at least one detector when radiation from the radiation source is reflected by an object and detected by the at least one detector; a synchronization means interfacing between the at least one detector and the radiation source; wherein; the synchronization means is configured for synchronizing the at least one detector with the radiation source so that detection by the detector of radiation from the radiation source to be processed is detected only during the radiation pulses, the processor is configured to determine a characteristic of the object by determining a displacement of detected spots detected with the at least one detector with reference to predetermined reference spot positions based on triangulation, and the radiation source emits monochromatic light and the at least one detector is equipped with a corresponding narrow bandpass filter and optics arranged so as to modify an angle of incidence onto said narrow bandpass filter, to confine said angle of incidence to a predetermined range around a normal of a main surface of said narrow bandpass filter, said optics comprising an image-space telecentric lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting a characteristic of an object, the method comprising the following steps:
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emitting a pulsed radiation pattern composed of radiation spots on the object using a radiation source, detecting the reflected pattern using at least one detector having a plurality of pixels, whereby the detection is synchronized with the pulsed radiation pattern for detecting radiation from the radiation source to be processed only during the radiation pulses, and processing the data from the detector or determining a characteristic of an object by determining a displacement of detected spots detected with the at least one detector with reference to predetermined reference spot positions, based on triangulation, wherein said emitting uses monochromatic light and said at least one detector is equipped with a corresponding narrow bandpass filter and optics arranged so as to modify an angle of incidence onto said narrow bandpass filter, to confine said angle of incidence to a predetermined range around a normal of a main surface of said narrow bandpass filter, said optics comprising an image-space telecentric lens. - View Dependent Claims (12, 13, 14)
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Specification