Intermediate image

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The intermediate image is in light microscopy, the magnified image of the of the object lens is generated. Typical light microscopes today are referred to as compound microscopes because the magnification takes place in two stages. The inverted intermediate image generated by the objective is enlarged one more time by the eyepiece . The intermediate image is a real image, i.e. an image that could also be captured by a screen. Its size corresponds directly to the scale number of the objective, which means that when using a 20x objective, every structure in the intermediate image is exactly 20 times larger than in reality. In this example, a further magnification with a 10x eyepiece results in a total magnification of 200 times.

The intermediate image is located in the front focal plane of the eyepiece so that the viewer sees the microscopic image as lying at infinity. In order to reproduce the intermediate image of differently magnifying lenses in the same plane, the lenses are built into frames of different lengths depending on the focal length .

Individual evidence

  1. a b Dieter Gerlach: The light microscope. An introduction to function, handling and special procedures for physicians and biologists . Georg Thieme Verlag, Stuttgart 1976, ISBN 3-13-530301-2 , p. 20th f .