Abstract: The invention pertains to a method for subtracting background light from an exposure value of a first pixel in an imaging array, said first pixel receiving a reflection of a spot from a scenery illuminated by a periodically pulsed pattern of spots, said periodically pulsed pattern comprising in alternation an illuminated phase and a non-illuminated phase, the method comprising: accumulating in said first pixel a charge in proportion to a first quantity of incident light, received in said first pixel while detecting said spot during a predetermined amount of time; and decreasing said charge in proportion to a second quantity of incident light received during said predetermined amount of time in absence of said spot. The invention also pertains to a pixel and an imaging array.

Abstract: A method and device for determining distances to a scene determines a laser light pulse width PW that is smaller than a maximum time of flight TOFmax corresponding to a maximum distance Dmax by using a pulse width reduction factor N such that PW=(TOFmax?TDL)/N wherein TDL is a predefined delay window, determines a pulse frequency FP such that FP?1/((N+1)×PW+TDL), illuminates the scene with an illuminating pattern comprising a plurality of spatially separated pulsed laser beams having the determined pulse width and frequency, performs the detection as function of time during a detection time period TD divided in M=?×(N+1) consecutive detection time windows, with ??1, such that TD=M×(PW/?), identifies in what detection time windows reflected laser light is detected, and calculates a distance to the scene based on this identification.

Abstract: A projector for a solid-state LIDAR system for determining distances to a scene is configured for illuminating the scene with a discrete spot pattern. The projector includes a laser array having a plurality of discrete solid-state laser light sources for simultaneously emitting a first laser beam, a mixing chamber configured for receiving and allowing propagation of each of the first laser beams until at least a portion of light rays of each first laser beam is overlapping with at least a portion of light rays of adjacent first laser beams, a reshaping optical system configured for receiving the overlapping light rays of the first laser beams and for generating a plurality of second laser beams such that each second laser beam includes light rays originating from multiple first laser beams, and a projector lens system for projecting the discrete spot pattern formed by the second laser beams towards the scene.

Abstract: The invention pertains to a system for determining a distance, comprising: a light source for projecting a pattern of discrete spots of laser light towards the object in a sequence of pulses; a detector comprising picture elements, for detecting light representing the pattern as reflected by the object in synchronization with the sequence of pulses; and processing means to calculate the distance to the object as a function of exposure values generated by said picture elements. The picture elements generate exposure values by accumulating a first amount of electrical charge representing a first amount of light reflected during a first time window and a second electrical charge representing a second amount of light reflected during a second time window. The solid-state radiation source emits substantially monochromatic light having a wavelength spread of less than ±20 nm and the detector is equipped with a corresponding narrow bandpass filter.

Abstract: A system for determining a distance to an object including a solid-state light source, a detector having a plurality of picture elements, and a processor to calculate the distance to the object as a function of exposure values generated by picture elements in response to the detected light. The picture elements generate exposure values by accumulating a first amount of electrical charge representative of reflected light during a first time window and a second electrical charge representative of reflected light during a second predetermined time window. The detecting occurs at the two charge storage wells; and the system interleaves the predetermined time windows with time windows during which the picture elements are used in a function different from the detecting and/or the picture elements include at least one further charge storage well to perform the function different from the detecting of the first and second amount of light.

Abstract: The present invention pertains to a pixel for use in a system for determining a distance to an object by range gating, said pixel comprising: a first charge storage well (221) and a second charge storage well (222) for accumulating electrical charges representative of amounts of light impinging on said pixel during respective sets of exposure intervals, wherein said first charge storage well (221) has a charge capacity that is at least 50% greater than a charge capacity of said second charge storage well (222). The invention also pertains to a range gating system comprising such a pixel.

Abstract: The present invention pertains to a pixel for use in a system for determining a distance to an object by range gating, said pixel comprising: a first charge storage well (221) and a second charge storage well (222) for accumulating electrical charges representative of amounts of light impinging on said pixel during respective sets of exposure intervals, wherein said first charge storage well (221) has a charge capacity that is at least 50% greater than a charge capacity of said second charge storage well (222). The invention also pertains to a range gating system comprising such a pixel.

Abstract: A system for determining a distance to an object including a solid-state light source, a detector having a plurality of picture elements, and a processor to calculate the distance to the object as a function of exposure values generated by picture elements in response to the detected light. The picture elements generate exposure values by accumulating a first amount of electrical charge representative of reflected light during a first time window and a second electrical charge representative of reflected light during a second predetermined time window. The detecting occurs at the two charge storage wells; and the system interleaves the predetermined time windows with time windows during which the picture elements are used in a function different from the detecting and/or the picture elements include at least one further charge storage well to perform the function different from the detecting of the first and second amount of light.

Abstract: The invention pertains to a system for determining a distance, comprising: a light source for projecting a pattern of discrete spots of laser light towards the object in a sequence of pulses; a detector comprising picture elements, for detecting light representing the pattern as reflected by the object in synchronization with the sequence of pulses; and processing means to calculate the distance to the object as a function of exposure values generated by said picture elements. The picture elements generate exposure values by accumulating a first amount of electrical charge representing a first amount of light reflected during a first time window and a second electrical charge representing a second amount of light reflected during a second time window. The solid-state radiation source emits substantially monochromatic light having a wavelength spread of less than ±20 nm and the detector is equipped with a corresponding narrow bandpass filter.

Abstract: The invention pertains to a method for subtracting background light from an exposure value of a first pixel in an imaging array, said first pixel receiving a reflection of a spot from a scenery illuminated by a periodically pulsed pattern of spots, said periodically pulsed pattern comprising in alternation an illuminated phase and a non-illuminated phase, the method comprising: accumulating in said first pixel a charge in proportion to a first quantity of incident light, received in said first pixel while detecting said spot during a predetermined amount of time; and decreasing said charge in proportion to a second quantity of incident light received during said predetermined amount of time in absence of said spot. The invention also pertains to a pixel and an imaging array.