Question

Define linear aperture?​

Answer 1

Answer:

Linear aperture is the diameter of the part of the optical system that is exposed to light. Depending upon the optical system the size of the aperture may be fixed or variable. The angular aperture of a lens is defined as the apparent angle of the lens aperture as seen from the focal point

Answer 2

Linear aperture is the diameter of the part of the optical system that is exposed to light. Depending upon the optical system the size of the aperture may be fixed or variable. The angular aperture of a lens is defined as the apparent angle of the lens aperture as seen from the focal point.