Fluid ejection system for ejecting a cleaning fluid toward an optical surface

A fluid ejection system adapted to eject a cleaning fluid toward an optical surface, the fluid ejection system comprising:

• a fluid duct inside of which a fluid is flowed, the fluid duct having a duct inlet to receive the fluid from a fluid source and a duct outlet to discharge the fluid to the outside;
• a nozzle arranged at the duct outlet to eject the fluid to the optical surface;
• and
• at least one electromagnetic valve configured to regulate the flow of fluid, the electromagnetically operated valve including:
• a valve body,
• a plunger member,
• an electromagnetic driving means configured to drive the plunger member along a flow direction inside the valve body into at least an open position in which the fluid is allowed to flow through the valve body and into a closed position in which the fluid is not allowed to flow through the valve body,
• wherein the plunger member is arranged to be forced by a pressure of fluid into the closed position, and to be driven by the electromagnetic driving means into the open position, and
• wherein the electromagnetically operated valve is included in the nozzle forming an electromagnetically operated valve device;
• wherein the nozzle and the electromagnetically operated valve form a single unit;
• and
• wherein the electromagnetically operated valve includes a coil reel, and the nozzle is at least one of directly attached to the coil reel and a unitary part of the coil reel.

A fluid ejection system adapted to eject a cleaning fluid toward an optical surface, the fluid ejection system comprising:

• a fluid duct inside of which a fluid is flowed, the fluid duct having a duct inlet to receive the fluid from a fluid source and a duct outlet to discharge the fluid to the outside;
• a nozzle arranged at the duct outlet to eject the fluid to the optical surface;
• and
• at least one electromagnetic valve configured to regulate the flow of fluid, the electromagnetically operated valve including;
• a valve body,
• a plunger member,
• an electromagnetic driving means configured to drive the plunger member along a flow direction inside the valve body into at least an open position in which the fluid is allowed to flow through the valve body and into a closed position in which the fluid is not allowed to flow through the valve body,
• wherein the plunger member is arranged to be forced by a pressure of fluid into the closed position, and to be driven by the electromagnetic driving means into the open position, and
• wherein the electromagnetically operated valve is included in the nozzle forming an electromagnetically operated valve device;
• wherein the nozzle and the electromagnetically operated valve form a single unit;
• and
• wherein the electromagnetically operated valve includes a coil reel and a coil shielding at least in part spaced radially outward from the coil reel, and the nozzle is one of directly attached to or an integral part of at least one of the coil reel and the coil shielding.