We compare and contrast concave and convex lenses by drawing ray diagrams.

Optical Lenses are optical components designed to focus or diverge light. Optical Lenses, which may consist of a single or multiple elements, are used in a wide variety of applications from microscopy ...

When the ɛ decreased, the shape of the UV-O 3 -exposed region changed from concave dimples to convex lenses (Figure 2b). The height of the lenses also increased with decreasing ɛ.