[File:Lambert2.gif|thumb| Diffuse and specular reflection from a glossy surface. The rays represent luminous intensity, which varies according to Lambert's cosine law for an ideal diffuse reflector. ]] Diffuse reflection is the reflection of light from a surface such that an incident ray is reflected at many angles rather than at just one angle as in the case of specular reflection. An illuminated ideal diffuse reflecting surface will have equal luminance from all directions which lie in the half-space adjacent to the surface (Lambertian reflectance).