angle of illumination

angle of illumination

The angle between the axis of an illuminator and a perpendicular to the surface being illuminated.
References in periodicals archive ?
Automotive effect coatings usually contain flake pigments, which act somewhat like a mirror, causing the color to change based on the angle of illumination or view.
The result was an impressive 60 per cent increase in the light extraction efficiency and 15 per cent wider angle of illumination.
d) Reducing the angle of illumination makes it easier to distinguish between the individual layers of the cornea
As it orbits the Earth, its angle of illumination by the Sun slowly changes, and the shape of the illuminated portion (known as the phase) changes from a thin crescent , through to a first quarter (or half Moon), to being fully lit (full Moon).
The pendant rod option extends the spotlight down from the ceiling, for a different angle of illumination.
The front fog lamps, now integrated into a trapezoidal front bumper, provide a wider angle of illumination.
Pearlescent pigments are used to achieve vivid interactions of color and luster with the added dimension of variation depending on the angle of illumination and observation.
But if you look at Deslandres within a day of lunar sunrise, when the angle of illumination is very low and shadows stretch long across Hell Plain, you may catch a most bewitching feature.
Here, chiaroscuro isn't a painterly illusion but an actuality: Volumes of light and lacy silhouettes of shadow shift with the angle of illumination.
LVMH looked at the change in angle of illumination of special effect (flip-flop) pigments using the multi-angle spectrophotometer MA68II.
This small change in the angle of illumination allows the characteristics, such as deep cracks and fissures, to be imaged.
Since the LEDs are adjustable in angle of illumination and intensity, the integrated IR solution is easy-to-install and is optimized for the scene.