Abbe sine condition

The Abbe sine condition is a condition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off-axis as well as on-axis objects. It was formulated by Ernst Abbe in the context of microscopes. The mathematical condition is as follows: Put in words, the sine of the output angle should be proportional to the sine of the input angle.

Abbe sine condition

The Abbe sine condition is a condition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off-axis as well as on-axis objects. It was formulated by Ernst Abbe in the context of microscopes. The mathematical condition is as follows: Put in words, the sine of the output angle should be proportional to the sine of the input angle.