Sentence examples for focal length of the objective from inspiring English sources
The magnification, sometimes referred to as magnifying power, is determined by dividing the focal length of the objective by the focal length of the eyepiece.
The focal length of the objective is inversely proportional to the magnification and, in the majority of modern microscopes, equals the tube length (usually 160 mm [6.3 inches]) divided by the magnification.
The angular resolution of a telescope is equal to the angle subtended by the least resolvable image separation at the focal length of the objective, the light-gathering lens.
As shown in previous theoretical work, larger or smaller ranges, and correspondingly higher or lower resolutions, may be obtained by changing the focal length of the objective lens [ 13].
The theoretical lateral resolution (4λf/πD) given by the beam diameter D = 10 mm, focal length of the objective f = 40 mm and wavelength λ = 1.275 µm is 6.5 µm.
The effective focal length of the objective lens is 1.8 mm, which corresponds to an F/# of 6, the full FOV is 70°, and the image diameter is 2.2 mm.
This is approximately the focal length of the 1X microscope objective.
The focal length of the lens is 23 mm.
f is the focal length of the camera.
The focal length of the lens array is f1.
The focal length of the condenser lens is f2.
