Glossary
- Lambertian light source: light source with a constant radiance (or luminance) whichever the direction
- Radiance ( radiometry ): for a light source or a diffusing/reflecting surface, power emitted per unit of solid angle and per unit of apparent area
- Irradiance ( radiometry ): optical power received by unit area
- Diffusion: phenomenon by which a radiation is deflected in various directions by interaction with other objects
- Reflectance: reflection coefficient related to the intensity