Lambertian emitter (emttrLmb)

key: emttrLmb

type: CC

  1. color: diffuse emittance
  2. color: diffuse reflectance

Description

A Lambertian (ideal diffuse) reflector and emitter.

Directional emission distribution

Radiant intensity is constant for all angles in the exitant hemisphere.

BRDF

R / pi

Examples 

  emttrLmb
    % Emittance from converting spectrum to XYZ, then RGB
    % (Trinitron, D65 white point).
    rgb 102.1231 107.4482 117.0000 end
    rgb 0.4 0.4 0.4 end	% Reflectance
  end