The imaging principle of magnifying glass
An optical lens made of glass or other transparent materials with a curved surface can magnify and image objects. The optical path diagram is shown in Figure 1. The object AB located within the focal point F of the object side, and its size is y, is transformed into a virtual image A'B' of size y' by the magnifying glass.
magnification of magnifying glass
Γ=250/f'
In the formula, 250--photopic distance, the unit is mm
f'-- the focal length of the magnifying glass, in mm
The magnification refers to the ratio of the viewing angle of the object image observed with a magnifying glass to the viewing angle of the object observed without a magnifying glass within a distance of 250mm.
