A device for cleaning an optical lens of a parking assistance camera includes at least one inner annular body and at least one outer annular body. The at least one outer annular body is configured such that the fluid chamber is closed with respect to surroundings of the device when the at least one outer annular body is in the resting position. The at least one outer annular body is configured such that the fluid chamber is open with respect to the surroundings of the device such that when said at least one outer annular body is in the cleaning position, a fluid introduced into the fluid chamber exits the fluid chamber in the direction of the optical lens. The at least one fluid supply element opening into the fluid chamber is disposed on the at least one inner annular body.

Methods, systems and computer readable program products for maintaining windscreen visibility using surface monitoring are disclosed. In embodiments, the system comprises a set of sensors for monitoring a state of a windscreen surface and for generating one or more signals representing that state; a control system for analyzing the one or more signals to identify defined conditions of the surface of the windscreen and to generate one or more control signals; and a set of activatable devices for receiving the one or more control signals. The control signals activate the activatable devices to remove the identified conditions of the surface of the windscreen. In embodiments, the set of activatable devices includes air jets and cleaning fluid jets, and the control signals activate these jets to direct air and cleaning fluids onto the windscreen. This may be done to remove rain drops or dirt from the windscreen.

Methods, systems and computer readable program products for maintaining windscreen visibility using surface monitoring are disclosed. In embodiments, the system comprises a set of sensors for monitoring a state of a windscreen surface and for generating one or more signals representing that state; a control system for analyzing the one or more signals to identify defined conditions of the surface of the windscreen and to generate one or more control signals; and a set of activatable devices for receiving the one or more control signals. The control signals activate the activatable devices to remove the identified conditions of the surface of the windscreen. In embodiments, the set of activatable devices includes air jets and cleaning fluid jets, and the control signals activate these jets to direct air and cleaning fluids onto the windscreen. This may be done to remove rain drops or dirt from the windscreen.

The subject disclosure relates to features that facilitate the automatic cleaning of optical sensors and in particular Light Detection and Ranging (LiDAR) sensors used in autonomous vehicle deployments. In some aspects, the disclosed technology includes a sensor cleaning apparatus having a housing, wherein the housing is configured to be rotatably coupled to an optical sensor, a wiper blade coupled to the housing, wherein the wiper blade is disposed at a downward angle relative to a top-surface of the optical sensor, and one or more nozzles disposed within the wiper blade, wherein the nozzles are configured to apply compressed gas to a surface of the optical sensor.

A sensor apparatus includes a cylindrical sensor window defining an axis, and a plurality of at least three tubular segments fixed relative to the sensor window. Each tubular segment is elongated circumferentially relative to the axis. The tubular segments collectively form a ring substantially centered around the axis. Each tubular segment includes a plurality of nozzles. Each nozzle includes a first opening and a second opening. Each of the first openings has a direction of discharge in a radially inward and axial direction forming a first angle with the axis, and each of the second openings has a direction of discharge in a radially inward and axial direction forming a second angle with the axis. The second angle is different than the first angle.

A sensor apparatus includes a housing attachable to a vehicle and including a panel, a sensor window, a liquid nozzle fixed relative to the housing, and a tunnel. The panel includes a port. The sensor window is positioned in the port. The liquid nozzle is aimed at the sensor window. The liquid nozzle is positioned in a first horizontal direction from the port along the panel. The tunnel extends along the panel and is positioned in a second horizontal direction from the port, the second horizontal direction being opposite the first horizontal direction. The tunnel terminates at an opening positioned to receive fluid outputted by the nozzle.

A sensor apparatus includes a housing attachable to a vehicle and including a panel, a sensor window, a liquid nozzle fixed relative to the housing, and a tunnel. The panel includes a port. The sensor window is positioned in the port. The liquid nozzle is aimed at the sensor window. The liquid nozzle is positioned in a first horizontal direction from the port along the panel. The tunnel extends along the panel and is positioned in a second horizontal direction from the port, the second horizontal direction being opposite the first horizontal direction. The tunnel terminates at an opening positioned to receive fluid outputted by the nozzle.

Devices, systems, and methods are provided for enhanced sensor cleaning validation. A device may determine a baseline performance measurement associated with a clean performance baseline of a sensor. The device may actuate a cleaning mechanism to remove at least a portion of an obstruction deposited on the sensor. The device may determine a first post-clean performance measurement associated with the sensor. The device may determine a degradation measurement between the baseline performance measurement and the first post-clean performance measurement, wherein the degradation measurement indicates an effectiveness of the cleaning mechanism.

Devices, systems, and methods are provided for enhanced sensor cleaning validation. A device may determine a baseline performance measurement associated with a clean performance baseline of a sensor. The device may actuate a cleaning mechanism to remove at least a portion of an obstruction deposited on the sensor. The device may determine a first post-clean performance measurement associated with the sensor. The device may determine a degradation measurement between the baseline performance measurement and the first post-clean performance measurement, wherein the degradation measurement indicates an effectiveness of the cleaning mechanism.

The invention concerns a windshield wiper (10), comprising: a blade (20) for wiping a windshield (2), and a body (30) supporting the blade (20); wherein the windshield wiper (10) comprises a plurality of pistons (40) distributed all along the blade (20) for pressing the blade (20) against the windshield (2). The invention further concerns a motor vehicle comprising at least one such windshield wiper (10), and a method for operating such a windshield wiper (10).