Magnification of a MicroscopeThe magnification of a microscope is determined in a similar way as for the loupe. Essentially, one compares the perceived image size between two situations: for observation through the microscope and for direct viewing without that instrument – in the latter case, ...
1/object distance+1/image distance=1/focal length. For the use of a magnifying glass, it is also stipulated that the magnification of the image at a clear viewing distance (25 centimeters) is the magnification of the magnifying glass. So the following formula can be...
A magnifying optical system for endoscope which can be set at least in a usual observing condition (at a wide position) and a condition for observing a magnified image of an object at a short distance (at a tele position) by moving any of one of lens units, and is configured so as ...