adjective
- having one flat surface and one convex (curved outward) surface, especially of a lens or optical element
Usage: technical; optics
Examples
- A planoconvex lens is commonly used in magnifying glasses and simple optical instruments.
- The telescope's objective lens was a planoconvex design with the curved side facing the incoming light.
- Planoconvex mirrors are often found in automotive headlights to focus light efficiently.
- The optician selected a planoconvex lens for the patient's corrective eyeglasses.
- In the laboratory, we examined the planoconvex optical element under the microscope.