deflector

A deflector is a device or component designed to change the direction of a moving object, a fluid, or a beam of energy. By imparting a transverse force or redirecting flow, a deflector alters trajectory, protects components, or controls distribution.

Mechanical and structural deflectors are common in engines, HVAC systems, and fluid handling. Vanes, shields, and baffles redirect air, gas, or particulate streams to improve cooling, mixing, shielding, or overall system performance.

Fluid and gas deflectors direct liquid or gas flows in pipes, turbines, or spray systems. They can create swirled, split, or redirected patterns to optimize pressure, deposition, or swath coverage.

Electromagnetic deflectors use electric or magnetic fields to bend beams of charged particles. Electrostatic deflectors apply perpendicular electric fields, while magnetic deflectors rely on magnetic fields. They are used in devices such as cathode-ray tubes, mass spectrometers, and particle accelerators to steer or separate beams.

Optical deflectors steer light paths through mirrors, prisms, or galvanometer-mounted devices. They are employed in laser systems, imaging and scanning applications, and fiber-optic setups to direct or sweep light without moving the light source itself.

In engineering design, deflectors are selected for response time, durability, and alignment accuracy. They can be passive elements or active components controlled by sensors or controllers, serving protective, steering, or shaping functions across various industries.