A multi-component system whose aperture stop is located at the front focus so that the chief rays are parallel to the optical axis in image space. For a telecentric lens, the exit pupil is at infinity.
SPHERICAL VS. ASPHERIC LENSES
HOW THEY’RE USED IN IMAGING APPLICATIONS
Optical Lenses are often categorized by their shape. Two common surface shapes are spherical and aspherical. Each offers unique characteristics that make it suitable for different use cases.