magnification of an eyepiece The magnification imparted by the eyepieces, commonly 10-15x. Related MicroscopyU Article Viewing and Projection Eyepieces The eyepiece (or ocular) is designed to project either a real or virtual image, depending upon the relationship between the intermediate image plane and the internal eyepiece field diaphragm. Explore how eyepieces can be coupled to the human eye or a camera system to produce images generated by the microscope objective.