The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

a method of producing the optical images of small objects formed by a microscope on a screen (in the case of microphotography and microcinephotography, on a photosensitive layer).

In microprojection the objective (2) of a microscope (see Figure 1) produces, as usual, a magnified real image (1’) of an object (1), but the eyepiece (3) functions as a projection system (for this purpose, the microscope is focused so that [1’] is located in front of the front focus F of the eyepiece) and produces a real image (1”) on the screen (4). The linear optical magnification for the microoroiection is

where Δ_obj and eye are the nominal values of the magnifications for the objective and the eyepiece, f’_eye is the focal distance of the eyepiece, and K is the distance from the eyepiece to the

Microprojection is also used to produce images of microscopic objects on the photocathode of an image-converter tube in research conducted by ultraviolet and infrared light and on the photosensitive layer of camera tubes in television microscopy.

L. A. FEDIN