The degree to which the performance of a particular scan lens design follows the equation Scan Length = 2*field coverage = f*2(q). The scan linearity of a system can be defined using both the percent position error and percent velocity error techniques.
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.