optical masks

Optical masks are tools used in manufacturing and technology to selectively block or allow light or other electromagnetic waves to pass through in specific areas. They are like detailed stencils or patterns made from materials that absorb or reflect light, shaping it precisely. In semiconductor fabrication, for example, optical masks guide the creation of tiny circuits on chips by projecting patterns onto surfaces. They are essential for ensuring that intricate designs are accurately transferred, enabling the production of complex electronic components, displays, and photonic devices with high precision and resolution.