Plano is a term describing a lens side that is perfectly flat, as opposed to a curved convex or concave surface.
Plano describes a flat surface on a lens, in contrast to the curved surfaces that bend light. A lens may have a plano side combined with a curved side, such as in a plano-convex lens that is flat on one face and convex on the other. The plano face passes light without bending it, while the curved face does the optical work.
Describing a lens surface as plano specifies its flat geometry, which is important to how the lens focuses or spreads light. The combination of a flat and a curved surface produces specific optical behavior used in lighting and imaging.
In commercial production and lighting, lenses with plano surfaces shape and focus the output of fixtures. While the lens directs the light, the fixture depends on dependable power and control wiring to energize the source whose output the lens controls.
Because the combination of a flat and a curved surface produces specific optical behavior, describing a lens face as plano specifies its flat geometry, which matters to how the lens focuses or spreads the light used in lighting and imaging applications.
Recognizing how a flat and a curved surface combine helps illustrate the optical behavior of lenses used to shape and focus light in lighting and imaging applications.
At Windy City Wire, the focus on low-voltage power and control cable supports the lighting fixtures whose lenses, including those with plano surfaces, shape their beams. Supplying dependable cable helps ensure that the source behind a lens performs consistently.