The field number (F.N.) is referred to as the diaphragm size of eyepiece in mm unit which defines the image area of specimen. The diaphragm diameter actually seen through eyepiece is known as the practical field of view (F.O.V.) which is determined by the formula:

Related Link

> Top of Product page

> Top of Digital Microscope page

> Top of Laser Confocal Microscope page

> UIS2 Objective Lens Lineup