Elliptical optics
Elliptical optics are circular but differ from roto-symmetrical circular optics
because the opening of the light beam on planes α and β is symmetric, but
differs greatly between the two.
The light distribution is highly elliptical.
Example
Elliptical optic code: E α x β
where:
E = Elliptical
α = Opening of the light beam on plane α expressed in degrees
β = Opening of the light beam on plane β expressed in degrees
For example: E 10°x45°
Grazing reflector optics
Grazing reflector optics stand out for their luminous emission that is typically
parallel (grazing) to the installation surface (wall or ground).
These optics are primarily used for architectural lighting with the purpose of
designing patterns of light and they rarely have a functional use.
A fundamental characteristic is the value of the α angle that identifies the
value of the light beam aperture measured on the installation surface.
Installation
surface
(wall)
Installation
surface
(ground)
XXV
