Optical relief

Optical relief, often referred to in the context of optical design and imaging systems, describes the apparent three-dimensional or raised effect produced by the interplay of light and surfaces. It can pertain to various fields, including optics, photography, and even lithography. In practical terms, optical relief can refer to: 1. **Visual Depth**: The way in which light interacts with textures, colors, and shapes to create a sense of depth or relief in visual images.