Illumination angle definition
Illumination angle means the angle between the axis of reference and the straight line connecting the centre of reference to the centre of the source of illumination.
Illumination angle means the angle between the axis of reference and the straight line connecting the centre of reference to the centre ofthe source of illumination.
Examples of Illumination angle in a sentence
D = Observation distance from and from beyond which the illuminating surface appears to be continuous = Angle of divergence β = Illumination angle.
D = Observation distance from and from beyond which the illuminating surface appears to be continuous α = Angle of divergence β = Illumination angle.
D = Observation distance from and from beyond which the illuminating surface appears to be continuous α = Angle of divergence ß = Illumination angle.